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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/smbfs
downloadlinux-linaro-stable-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/smbfs')
-rw-r--r--fs/smbfs/Makefile39
-rw-r--r--fs/smbfs/cache.c209
-rw-r--r--fs/smbfs/dir.c693
-rw-r--r--fs/smbfs/file.c423
-rw-r--r--fs/smbfs/getopt.c64
-rw-r--r--fs/smbfs/getopt.h14
-rw-r--r--fs/smbfs/inode.c849
-rw-r--r--fs/smbfs/ioctl.c67
-rw-r--r--fs/smbfs/proc.c3509
-rw-r--r--fs/smbfs/proto.h87
-rw-r--r--fs/smbfs/request.c823
-rw-r--r--fs/smbfs/request.h70
-rw-r--r--fs/smbfs/smb_debug.h34
-rw-r--r--fs/smbfs/smbiod.c341
-rw-r--r--fs/smbfs/sock.c388
-rw-r--r--fs/smbfs/symlink.c70
16 files changed, 7680 insertions, 0 deletions
diff --git a/fs/smbfs/Makefile b/fs/smbfs/Makefile
new file mode 100644
index 000000000000..93246b7dd6fb
--- /dev/null
+++ b/fs/smbfs/Makefile
@@ -0,0 +1,39 @@
+#
+# Makefile for the linux smb-filesystem routines.
+#
+
+obj-$(CONFIG_SMB_FS) += smbfs.o
+
+smbfs-objs := proc.o dir.o cache.o sock.o inode.o file.o ioctl.o getopt.o \
+ symlink.o smbiod.o request.o
+
+# If you want debugging output, you may add these flags to the EXTRA_CFLAGS
+# SMBFS_PARANOIA should normally be enabled.
+
+EXTRA_CFLAGS += -DSMBFS_PARANOIA
+#EXTRA_CFLAGS += -DSMBFS_DEBUG
+#EXTRA_CFLAGS += -DSMBFS_DEBUG_VERBOSE
+#EXTRA_CFLAGS += -DDEBUG_SMB_MALLOC
+#EXTRA_CFLAGS += -DDEBUG_SMB_TIMESTAMP
+#EXTRA_CFLAGS += -Werror
+
+#
+# Maintainer rules
+#
+
+# getopt.c not included. It is intentionally separate
+SRC = proc.c dir.c cache.c sock.c inode.c file.c ioctl.c smbiod.c request.c \
+ symlink.c
+
+proto:
+ -rm -f proto.h
+ @echo > proto2.h "/*"
+ @echo >> proto2.h " * Autogenerated with cproto on: " `date`
+ @echo >> proto2.h " */"
+ @echo >> proto2.h ""
+ @echo >> proto2.h "struct smb_request;"
+ @echo >> proto2.h "struct sock;"
+ @echo >> proto2.h "struct statfs;"
+ @echo >> proto2.h ""
+ cproto -E "gcc -E" -e -v -I $(TOPDIR)/include -DMAKING_PROTO -D__KERNEL__ $(SRC) >> proto2.h
+ mv proto2.h proto.h
diff --git a/fs/smbfs/cache.c b/fs/smbfs/cache.c
new file mode 100644
index 000000000000..f3e6b81288ab
--- /dev/null
+++ b/fs/smbfs/cache.c
@@ -0,0 +1,209 @@
+/*
+ * cache.c
+ *
+ * Copyright (C) 1997 by Bill Hawes
+ *
+ * Routines to support directory cacheing using the page cache.
+ * This cache code is almost directly taken from ncpfs.
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/dirent.h>
+#include <linux/smb_fs.h>
+#include <linux/pagemap.h>
+#include <linux/net.h>
+
+#include <asm/page.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+
+/*
+ * Force the next attempt to use the cache to be a timeout.
+ * If we can't find the page that's fine, it will cause a refresh.
+ */
+void
+smb_invalid_dir_cache(struct inode * dir)
+{
+ struct smb_sb_info *server = server_from_inode(dir);
+ union smb_dir_cache *cache = NULL;
+ struct page *page = NULL;
+
+ page = grab_cache_page(&dir->i_data, 0);
+ if (!page)
+ goto out;
+
+ if (!PageUptodate(page))
+ goto out_unlock;
+
+ cache = kmap(page);
+ cache->head.time = jiffies - SMB_MAX_AGE(server);
+
+ kunmap(page);
+ SetPageUptodate(page);
+out_unlock:
+ unlock_page(page);
+ page_cache_release(page);
+out:
+ return;
+}
+
+/*
+ * Mark all dentries for 'parent' as invalid, forcing them to be re-read
+ */
+void
+smb_invalidate_dircache_entries(struct dentry *parent)
+{
+ struct smb_sb_info *server = server_from_dentry(parent);
+ struct list_head *next;
+ struct dentry *dentry;
+
+ spin_lock(&dcache_lock);
+ next = parent->d_subdirs.next;
+ while (next != &parent->d_subdirs) {
+ dentry = list_entry(next, struct dentry, d_child);
+ dentry->d_fsdata = NULL;
+ smb_age_dentry(server, dentry);
+ next = next->next;
+ }
+ spin_unlock(&dcache_lock);
+}
+
+/*
+ * dget, but require that fpos and parent matches what the dentry contains.
+ * dentry is not known to be a valid pointer at entry.
+ */
+struct dentry *
+smb_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
+{
+ struct dentry *dent = dentry;
+ struct list_head *next;
+
+ if (d_validate(dent, parent)) {
+ if (dent->d_name.len <= SMB_MAXNAMELEN &&
+ (unsigned long)dent->d_fsdata == fpos) {
+ if (!dent->d_inode) {
+ dput(dent);
+ dent = NULL;
+ }
+ return dent;
+ }
+ dput(dent);
+ }
+
+ /* If a pointer is invalid, we search the dentry. */
+ spin_lock(&dcache_lock);
+ next = parent->d_subdirs.next;
+ while (next != &parent->d_subdirs) {
+ dent = list_entry(next, struct dentry, d_child);
+ if ((unsigned long)dent->d_fsdata == fpos) {
+ if (dent->d_inode)
+ dget_locked(dent);
+ else
+ dent = NULL;
+ goto out_unlock;
+ }
+ next = next->next;
+ }
+ dent = NULL;
+out_unlock:
+ spin_unlock(&dcache_lock);
+ return dent;
+}
+
+
+/*
+ * Create dentry/inode for this file and add it to the dircache.
+ */
+int
+smb_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
+ struct smb_cache_control *ctrl, struct qstr *qname,
+ struct smb_fattr *entry)
+{
+ struct dentry *newdent, *dentry = filp->f_dentry;
+ struct inode *newino, *inode = dentry->d_inode;
+ struct smb_cache_control ctl = *ctrl;
+ int valid = 0;
+ int hashed = 0;
+ ino_t ino = 0;
+
+ qname->hash = full_name_hash(qname->name, qname->len);
+
+ if (dentry->d_op && dentry->d_op->d_hash)
+ if (dentry->d_op->d_hash(dentry, qname) != 0)
+ goto end_advance;
+
+ newdent = d_lookup(dentry, qname);
+
+ if (!newdent) {
+ newdent = d_alloc(dentry, qname);
+ if (!newdent)
+ goto end_advance;
+ } else {
+ hashed = 1;
+ memcpy((char *) newdent->d_name.name, qname->name,
+ newdent->d_name.len);
+ }
+
+ if (!newdent->d_inode) {
+ smb_renew_times(newdent);
+ entry->f_ino = iunique(inode->i_sb, 2);
+ newino = smb_iget(inode->i_sb, entry);
+ if (newino) {
+ smb_new_dentry(newdent);
+ d_instantiate(newdent, newino);
+ if (!hashed)
+ d_rehash(newdent);
+ }
+ } else
+ smb_set_inode_attr(newdent->d_inode, entry);
+
+ if (newdent->d_inode) {
+ ino = newdent->d_inode->i_ino;
+ newdent->d_fsdata = (void *) ctl.fpos;
+ smb_new_dentry(newdent);
+ }
+
+ if (ctl.idx >= SMB_DIRCACHE_SIZE) {
+ if (ctl.page) {
+ kunmap(ctl.page);
+ SetPageUptodate(ctl.page);
+ unlock_page(ctl.page);
+ page_cache_release(ctl.page);
+ }
+ ctl.cache = NULL;
+ ctl.idx -= SMB_DIRCACHE_SIZE;
+ ctl.ofs += 1;
+ ctl.page = grab_cache_page(&inode->i_data, ctl.ofs);
+ if (ctl.page)
+ ctl.cache = kmap(ctl.page);
+ }
+ if (ctl.cache) {
+ ctl.cache->dentry[ctl.idx] = newdent;
+ valid = 1;
+ }
+ dput(newdent);
+
+end_advance:
+ if (!valid)
+ ctl.valid = 0;
+ if (!ctl.filled && (ctl.fpos == filp->f_pos)) {
+ if (!ino)
+ ino = find_inode_number(dentry, qname);
+ if (!ino)
+ ino = iunique(inode->i_sb, 2);
+ ctl.filled = filldir(dirent, qname->name, qname->len,
+ filp->f_pos, ino, DT_UNKNOWN);
+ if (!ctl.filled)
+ filp->f_pos += 1;
+ }
+ ctl.fpos += 1;
+ ctl.idx += 1;
+ *ctrl = ctl;
+ return (ctl.valid || !ctl.filled);
+}
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
new file mode 100644
index 000000000000..c6c33e15143a
--- /dev/null
+++ b/fs/smbfs/dir.c
@@ -0,0 +1,693 @@
+/*
+ * dir.c
+ *
+ * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
+ * Copyright (C) 1997 by Volker Lendecke
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/smp_lock.h>
+#include <linux/ctype.h>
+#include <linux/net.h>
+
+#include <linux/smb_fs.h>
+#include <linux/smb_mount.h>
+#include <linux/smbno.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+
+static int smb_readdir(struct file *, void *, filldir_t);
+static int smb_dir_open(struct inode *, struct file *);
+
+static struct dentry *smb_lookup(struct inode *, struct dentry *, struct nameidata *);
+static int smb_create(struct inode *, struct dentry *, int, struct nameidata *);
+static int smb_mkdir(struct inode *, struct dentry *, int);
+static int smb_rmdir(struct inode *, struct dentry *);
+static int smb_unlink(struct inode *, struct dentry *);
+static int smb_rename(struct inode *, struct dentry *,
+ struct inode *, struct dentry *);
+static int smb_make_node(struct inode *,struct dentry *,int,dev_t);
+static int smb_link(struct dentry *, struct inode *, struct dentry *);
+
+struct file_operations smb_dir_operations =
+{
+ .read = generic_read_dir,
+ .readdir = smb_readdir,
+ .ioctl = smb_ioctl,
+ .open = smb_dir_open,
+};
+
+struct inode_operations smb_dir_inode_operations =
+{
+ .create = smb_create,
+ .lookup = smb_lookup,
+ .unlink = smb_unlink,
+ .mkdir = smb_mkdir,
+ .rmdir = smb_rmdir,
+ .rename = smb_rename,
+ .getattr = smb_getattr,
+ .setattr = smb_notify_change,
+};
+
+struct inode_operations smb_dir_inode_operations_unix =
+{
+ .create = smb_create,
+ .lookup = smb_lookup,
+ .unlink = smb_unlink,
+ .mkdir = smb_mkdir,
+ .rmdir = smb_rmdir,
+ .rename = smb_rename,
+ .getattr = smb_getattr,
+ .setattr = smb_notify_change,
+ .symlink = smb_symlink,
+ .mknod = smb_make_node,
+ .link = smb_link,
+};
+
+/*
+ * Read a directory, using filldir to fill the dirent memory.
+ * smb_proc_readdir does the actual reading from the smb server.
+ *
+ * The cache code is almost directly taken from ncpfs
+ */
+static int
+smb_readdir(struct file *filp, void *dirent, filldir_t filldir)
+{
+ struct dentry *dentry = filp->f_dentry;
+ struct inode *dir = dentry->d_inode;
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ union smb_dir_cache *cache = NULL;
+ struct smb_cache_control ctl;
+ struct page *page = NULL;
+ int result;
+
+ ctl.page = NULL;
+ ctl.cache = NULL;
+
+ VERBOSE("reading %s/%s, f_pos=%d\n",
+ DENTRY_PATH(dentry), (int) filp->f_pos);
+
+ result = 0;
+
+ lock_kernel();
+
+ switch ((unsigned int) filp->f_pos) {
+ case 0:
+ if (filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR) < 0)
+ goto out;
+ filp->f_pos = 1;
+ /* fallthrough */
+ case 1:
+ if (filldir(dirent, "..", 2, 1, parent_ino(dentry), DT_DIR) < 0)
+ goto out;
+ filp->f_pos = 2;
+ }
+
+ /*
+ * Make sure our inode is up-to-date.
+ */
+ result = smb_revalidate_inode(dentry);
+ if (result)
+ goto out;
+
+
+ page = grab_cache_page(&dir->i_data, 0);
+ if (!page)
+ goto read_really;
+
+ ctl.cache = cache = kmap(page);
+ ctl.head = cache->head;
+
+ if (!PageUptodate(page) || !ctl.head.eof) {
+ VERBOSE("%s/%s, page uptodate=%d, eof=%d\n",
+ DENTRY_PATH(dentry), PageUptodate(page),ctl.head.eof);
+ goto init_cache;
+ }
+
+ if (filp->f_pos == 2) {
+ if (jiffies - ctl.head.time >= SMB_MAX_AGE(server))
+ goto init_cache;
+
+ /*
+ * N.B. ncpfs checks mtime of dentry too here, we don't.
+ * 1. common smb servers do not update mtime on dir changes
+ * 2. it requires an extra smb request
+ * (revalidate has the same timeout as ctl.head.time)
+ *
+ * Instead smbfs invalidates its own cache on local changes
+ * and remote changes are not seen until timeout.
+ */
+ }
+
+ if (filp->f_pos > ctl.head.end)
+ goto finished;
+
+ ctl.fpos = filp->f_pos + (SMB_DIRCACHE_START - 2);
+ ctl.ofs = ctl.fpos / SMB_DIRCACHE_SIZE;
+ ctl.idx = ctl.fpos % SMB_DIRCACHE_SIZE;
+
+ for (;;) {
+ if (ctl.ofs != 0) {
+ ctl.page = find_lock_page(&dir->i_data, ctl.ofs);
+ if (!ctl.page)
+ goto invalid_cache;
+ ctl.cache = kmap(ctl.page);
+ if (!PageUptodate(ctl.page))
+ goto invalid_cache;
+ }
+ while (ctl.idx < SMB_DIRCACHE_SIZE) {
+ struct dentry *dent;
+ int res;
+
+ dent = smb_dget_fpos(ctl.cache->dentry[ctl.idx],
+ dentry, filp->f_pos);
+ if (!dent)
+ goto invalid_cache;
+
+ res = filldir(dirent, dent->d_name.name,
+ dent->d_name.len, filp->f_pos,
+ dent->d_inode->i_ino, DT_UNKNOWN);
+ dput(dent);
+ if (res)
+ goto finished;
+ filp->f_pos += 1;
+ ctl.idx += 1;
+ if (filp->f_pos > ctl.head.end)
+ goto finished;
+ }
+ if (ctl.page) {
+ kunmap(ctl.page);
+ SetPageUptodate(ctl.page);
+ unlock_page(ctl.page);
+ page_cache_release(ctl.page);
+ ctl.page = NULL;
+ }
+ ctl.idx = 0;
+ ctl.ofs += 1;
+ }
+invalid_cache:
+ if (ctl.page) {
+ kunmap(ctl.page);
+ unlock_page(ctl.page);
+ page_cache_release(ctl.page);
+ ctl.page = NULL;
+ }
+ ctl.cache = cache;
+init_cache:
+ smb_invalidate_dircache_entries(dentry);
+ ctl.head.time = jiffies;
+ ctl.head.eof = 0;
+ ctl.fpos = 2;
+ ctl.ofs = 0;
+ ctl.idx = SMB_DIRCACHE_START;
+ ctl.filled = 0;
+ ctl.valid = 1;
+read_really:
+ result = server->ops->readdir(filp, dirent, filldir, &ctl);
+ if (ctl.idx == -1)
+ goto invalid_cache; /* retry */
+ ctl.head.end = ctl.fpos - 1;
+ ctl.head.eof = ctl.valid;
+finished:
+ if (page) {
+ cache->head = ctl.head;
+ kunmap(page);
+ SetPageUptodate(page);
+ unlock_page(page);
+ page_cache_release(page);
+ }
+ if (ctl.page) {
+ kunmap(ctl.page);
+ SetPageUptodate(ctl.page);
+ unlock_page(ctl.page);
+ page_cache_release(ctl.page);
+ }
+out:
+ unlock_kernel();
+ return result;
+}
+
+static int
+smb_dir_open(struct inode *dir, struct file *file)
+{
+ struct dentry *dentry = file->f_dentry;
+ struct smb_sb_info *server;
+ int error = 0;
+
+ VERBOSE("(%s/%s)\n", dentry->d_parent->d_name.name,
+ file->f_dentry->d_name.name);
+
+ /*
+ * Directory timestamps in the core protocol aren't updated
+ * when a file is added, so we give them a very short TTL.
+ */
+ lock_kernel();
+ server = server_from_dentry(dentry);
+ if (server->opt.protocol < SMB_PROTOCOL_LANMAN2) {
+ unsigned long age = jiffies - SMB_I(dir)->oldmtime;
+ if (age > 2*HZ)
+ smb_invalid_dir_cache(dir);
+ }
+
+ /*
+ * Note: in order to allow the smbmount process to open the
+ * mount point, we only revalidate if the connection is valid or
+ * if the process is trying to access something other than the root.
+ */
+ if (server->state == CONN_VALID || !IS_ROOT(dentry))
+ error = smb_revalidate_inode(dentry);
+ unlock_kernel();
+ return error;
+}
+
+/*
+ * Dentry operations routines
+ */
+static int smb_lookup_validate(struct dentry *, struct nameidata *);
+static int smb_hash_dentry(struct dentry *, struct qstr *);
+static int smb_compare_dentry(struct dentry *, struct qstr *, struct qstr *);
+static int smb_delete_dentry(struct dentry *);
+
+static struct dentry_operations smbfs_dentry_operations =
+{
+ .d_revalidate = smb_lookup_validate,
+ .d_hash = smb_hash_dentry,
+ .d_compare = smb_compare_dentry,
+ .d_delete = smb_delete_dentry,
+};
+
+static struct dentry_operations smbfs_dentry_operations_case =
+{
+ .d_revalidate = smb_lookup_validate,
+ .d_delete = smb_delete_dentry,
+};
+
+
+/*
+ * This is the callback when the dcache has a lookup hit.
+ */
+static int
+smb_lookup_validate(struct dentry * dentry, struct nameidata *nd)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ struct inode * inode = dentry->d_inode;
+ unsigned long age = jiffies - dentry->d_time;
+ int valid;
+
+ /*
+ * The default validation is based on dentry age:
+ * we believe in dentries for a few seconds. (But each
+ * successful server lookup renews the timestamp.)
+ */
+ valid = (age <= SMB_MAX_AGE(server));
+#ifdef SMBFS_DEBUG_VERBOSE
+ if (!valid)
+ VERBOSE("%s/%s not valid, age=%lu\n",
+ DENTRY_PATH(dentry), age);
+#endif
+
+ if (inode) {
+ lock_kernel();
+ if (is_bad_inode(inode)) {
+ PARANOIA("%s/%s has dud inode\n", DENTRY_PATH(dentry));
+ valid = 0;
+ } else if (!valid)
+ valid = (smb_revalidate_inode(dentry) == 0);
+ unlock_kernel();
+ } else {
+ /*
+ * What should we do for negative dentries?
+ */
+ }
+ return valid;
+}
+
+static int
+smb_hash_dentry(struct dentry *dir, struct qstr *this)
+{
+ unsigned long hash;
+ int i;
+
+ hash = init_name_hash();
+ for (i=0; i < this->len ; i++)
+ hash = partial_name_hash(tolower(this->name[i]), hash);
+ this->hash = end_name_hash(hash);
+
+ return 0;
+}
+
+static int
+smb_compare_dentry(struct dentry *dir, struct qstr *a, struct qstr *b)
+{
+ int i, result = 1;
+
+ if (a->len != b->len)
+ goto out;
+ for (i=0; i < a->len; i++) {
+ if (tolower(a->name[i]) != tolower(b->name[i]))
+ goto out;
+ }
+ result = 0;
+out:
+ return result;
+}
+
+/*
+ * This is the callback from dput() when d_count is going to 0.
+ * We use this to unhash dentries with bad inodes.
+ */
+static int
+smb_delete_dentry(struct dentry * dentry)
+{
+ if (dentry->d_inode) {
+ if (is_bad_inode(dentry->d_inode)) {
+ PARANOIA("bad inode, unhashing %s/%s\n",
+ DENTRY_PATH(dentry));
+ return 1;
+ }
+ } else {
+ /* N.B. Unhash negative dentries? */
+ }
+ return 0;
+}
+
+/*
+ * Initialize a new dentry
+ */
+void
+smb_new_dentry(struct dentry *dentry)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+
+ if (server->mnt->flags & SMB_MOUNT_CASE)
+ dentry->d_op = &smbfs_dentry_operations_case;
+ else
+ dentry->d_op = &smbfs_dentry_operations;
+ dentry->d_time = jiffies;
+}
+
+
+/*
+ * Whenever a lookup succeeds, we know the parent directories
+ * are all valid, so we want to update the dentry timestamps.
+ * N.B. Move this to dcache?
+ */
+void
+smb_renew_times(struct dentry * dentry)
+{
+ dget(dentry);
+ spin_lock(&dentry->d_lock);
+ for (;;) {
+ struct dentry *parent;
+
+ dentry->d_time = jiffies;
+ if (IS_ROOT(dentry))
+ break;
+ parent = dentry->d_parent;
+ dget(parent);
+ spin_unlock(&dentry->d_lock);
+ dput(dentry);
+ dentry = parent;
+ spin_lock(&dentry->d_lock);
+ }
+ spin_unlock(&dentry->d_lock);
+ dput(dentry);
+}
+
+static struct dentry *
+smb_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
+{
+ struct smb_fattr finfo;
+ struct inode *inode;
+ int error;
+ struct smb_sb_info *server;
+
+ error = -ENAMETOOLONG;
+ if (dentry->d_name.len > SMB_MAXNAMELEN)
+ goto out;
+
+ lock_kernel();
+ error = smb_proc_getattr(dentry, &finfo);
+#ifdef SMBFS_PARANOIA
+ if (error && error != -ENOENT)
+ PARANOIA("find %s/%s failed, error=%d\n",
+ DENTRY_PATH(dentry), error);
+#endif
+
+ inode = NULL;
+ if (error == -ENOENT)
+ goto add_entry;
+ if (!error) {
+ error = -EACCES;
+ finfo.f_ino = iunique(dentry->d_sb, 2);
+ inode = smb_iget(dir->i_sb, &finfo);
+ if (inode) {
+ add_entry:
+ server = server_from_dentry(dentry);
+ if (server->mnt->flags & SMB_MOUNT_CASE)
+ dentry->d_op = &smbfs_dentry_operations_case;
+ else
+ dentry->d_op = &smbfs_dentry_operations;
+
+ d_add(dentry, inode);
+ smb_renew_times(dentry);
+ error = 0;
+ }
+ }
+ unlock_kernel();
+out:
+ return ERR_PTR(error);
+}
+
+/*
+ * This code is common to all routines creating a new inode.
+ */
+static int
+smb_instantiate(struct dentry *dentry, __u16 fileid, int have_id)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ struct inode *inode;
+ int error;
+ struct smb_fattr fattr;
+
+ VERBOSE("file %s/%s, fileid=%u\n", DENTRY_PATH(dentry), fileid);
+
+ error = smb_proc_getattr(dentry, &fattr);
+ if (error)
+ goto out_close;
+
+ smb_renew_times(dentry);
+ fattr.f_ino = iunique(dentry->d_sb, 2);
+ inode = smb_iget(dentry->d_sb, &fattr);
+ if (!inode)
+ goto out_no_inode;
+
+ if (have_id) {
+ struct smb_inode_info *ei = SMB_I(inode);
+ ei->fileid = fileid;
+ ei->access = SMB_O_RDWR;
+ ei->open = server->generation;
+ }
+ d_instantiate(dentry, inode);
+out:
+ return error;
+
+out_no_inode:
+ error = -EACCES;
+out_close:
+ if (have_id) {
+ PARANOIA("%s/%s failed, error=%d, closing %u\n",
+ DENTRY_PATH(dentry), error, fileid);
+ smb_close_fileid(dentry, fileid);
+ }
+ goto out;
+}
+
+/* N.B. How should the mode argument be used? */
+static int
+smb_create(struct inode *dir, struct dentry *dentry, int mode,
+ struct nameidata *nd)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ __u16 fileid;
+ int error;
+ struct iattr attr;
+
+ VERBOSE("creating %s/%s, mode=%d\n", DENTRY_PATH(dentry), mode);
+
+ lock_kernel();
+ smb_invalid_dir_cache(dir);
+ error = smb_proc_create(dentry, 0, get_seconds(), &fileid);
+ if (!error) {
+ if (server->opt.capabilities & SMB_CAP_UNIX) {
+ /* Set attributes for new file */
+ attr.ia_valid = ATTR_MODE;
+ attr.ia_mode = mode;
+ error = smb_proc_setattr_unix(dentry, &attr, 0, 0);
+ }
+ error = smb_instantiate(dentry, fileid, 1);
+ } else {
+ PARANOIA("%s/%s failed, error=%d\n",
+ DENTRY_PATH(dentry), error);
+ }
+ unlock_kernel();
+ return error;
+}
+
+/* N.B. How should the mode argument be used? */
+static int
+smb_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ int error;
+ struct iattr attr;
+
+ lock_kernel();
+ smb_invalid_dir_cache(dir);
+ error = smb_proc_mkdir(dentry);
+ if (!error) {
+ if (server->opt.capabilities & SMB_CAP_UNIX) {
+ /* Set attributes for new directory */
+ attr.ia_valid = ATTR_MODE;
+ attr.ia_mode = mode;
+ error = smb_proc_setattr_unix(dentry, &attr, 0, 0);
+ }
+ error = smb_instantiate(dentry, 0, 0);
+ }
+ unlock_kernel();
+ return error;
+}
+
+static int
+smb_rmdir(struct inode *dir, struct dentry *dentry)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ /*
+ * Close the directory if it's open.
+ */
+ lock_kernel();
+ smb_close(inode);
+
+ /*
+ * Check that nobody else is using the directory..
+ */
+ error = -EBUSY;
+ if (!d_unhashed(dentry))
+ goto out;
+
+ smb_invalid_dir_cache(dir);
+ error = smb_proc_rmdir(dentry);
+
+out:
+ unlock_kernel();
+ return error;
+}
+
+static int
+smb_unlink(struct inode *dir, struct dentry *dentry)
+{
+ int error;
+
+ /*
+ * Close the file if it's open.
+ */
+ lock_kernel();
+ smb_close(dentry->d_inode);
+
+ smb_invalid_dir_cache(dir);
+ error = smb_proc_unlink(dentry);
+ if (!error)
+ smb_renew_times(dentry);
+ unlock_kernel();
+ return error;
+}
+
+static int
+smb_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
+{
+ int error;
+
+ /*
+ * Close any open files, and check whether to delete the
+ * target before attempting the rename.
+ */
+ lock_kernel();
+ if (old_dentry->d_inode)
+ smb_close(old_dentry->d_inode);
+ if (new_dentry->d_inode) {
+ smb_close(new_dentry->d_inode);
+ error = smb_proc_unlink(new_dentry);
+ if (error) {
+ VERBOSE("unlink %s/%s, error=%d\n",
+ DENTRY_PATH(new_dentry), error);
+ goto out;
+ }
+ /* FIXME */
+ d_delete(new_dentry);
+ }
+
+ smb_invalid_dir_cache(old_dir);
+ smb_invalid_dir_cache(new_dir);
+ error = smb_proc_mv(old_dentry, new_dentry);
+ if (!error) {
+ smb_renew_times(old_dentry);
+ smb_renew_times(new_dentry);
+ }
+out:
+ unlock_kernel();
+ return error;
+}
+
+/*
+ * FIXME: samba servers won't let you create device nodes unless uid/gid
+ * matches the connection credentials (and we don't know which those are ...)
+ */
+static int
+smb_make_node(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
+{
+ int error;
+ struct iattr attr;
+
+ attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID;
+ attr.ia_mode = mode;
+ attr.ia_uid = current->euid;
+ attr.ia_gid = current->egid;
+
+ if (!new_valid_dev(dev))
+ return -EINVAL;
+
+ smb_invalid_dir_cache(dir);
+ error = smb_proc_setattr_unix(dentry, &attr, MAJOR(dev), MINOR(dev));
+ if (!error) {
+ error = smb_instantiate(dentry, 0, 0);
+ }
+ return error;
+}
+
+/*
+ * dentry = existing file
+ * new_dentry = new file
+ */
+static int
+smb_link(struct dentry *dentry, struct inode *dir, struct dentry *new_dentry)
+{
+ int error;
+
+ DEBUG1("smb_link old=%s/%s new=%s/%s\n",
+ DENTRY_PATH(dentry), DENTRY_PATH(new_dentry));
+ smb_invalid_dir_cache(dir);
+ error = smb_proc_link(server_from_dentry(dentry), dentry, new_dentry);
+ if (!error) {
+ smb_renew_times(dentry);
+ error = smb_instantiate(new_dentry, 0, 0);
+ }
+ return error;
+}
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
new file mode 100644
index 000000000000..b4fcfa8b55a1
--- /dev/null
+++ b/fs/smbfs/file.c
@@ -0,0 +1,423 @@
+/*
+ * file.c
+ *
+ * Copyright (C) 1995, 1996, 1997 by Paal-Kr. Engstad and Volker Lendecke
+ * Copyright (C) 1997 by Volker Lendecke
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/smp_lock.h>
+#include <linux/net.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/smbno.h>
+#include <linux/smb_fs.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+
+static int
+smb_fsync(struct file *file, struct dentry * dentry, int datasync)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ int result;
+
+ VERBOSE("sync file %s/%s\n", DENTRY_PATH(dentry));
+
+ /*
+ * The VFS will writepage() all dirty pages for us, but we
+ * should send a SMBflush to the server, letting it know that
+ * we want things synchronized with actual storage.
+ *
+ * Note: this function requires all pages to have been written already
+ * (should be ok with writepage_sync)
+ */
+ result = smb_proc_flush(server, SMB_I(dentry->d_inode)->fileid);
+ return result;
+}
+
+/*
+ * Read a page synchronously.
+ */
+static int
+smb_readpage_sync(struct dentry *dentry, struct page *page)
+{
+ char *buffer = kmap(page);
+ loff_t offset = (loff_t)page->index << PAGE_CACHE_SHIFT;
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ unsigned int rsize = smb_get_rsize(server);
+ int count = PAGE_SIZE;
+ int result;
+
+ VERBOSE("file %s/%s, count=%d@%Ld, rsize=%d\n",
+ DENTRY_PATH(dentry), count, offset, rsize);
+
+ result = smb_open(dentry, SMB_O_RDONLY);
+ if (result < 0)
+ goto io_error;
+
+ do {
+ if (count < rsize)
+ rsize = count;
+
+ result = server->ops->read(dentry->d_inode,offset,rsize,buffer);
+ if (result < 0)
+ goto io_error;
+
+ count -= result;
+ offset += result;
+ buffer += result;
+ dentry->d_inode->i_atime =
+ current_fs_time(dentry->d_inode->i_sb);
+ if (result < rsize)
+ break;
+ } while (count);
+
+ memset(buffer, 0, count);
+ flush_dcache_page(page);
+ SetPageUptodate(page);
+ result = 0;
+
+io_error:
+ kunmap(page);
+ unlock_page(page);
+ return result;
+}
+
+/*
+ * We are called with the page locked and we unlock it when done.
+ */
+static int
+smb_readpage(struct file *file, struct page *page)
+{
+ int error;
+ struct dentry *dentry = file->f_dentry;
+
+ page_cache_get(page);
+ error = smb_readpage_sync(dentry, page);
+ page_cache_release(page);
+ return error;
+}
+
+/*
+ * Write a page synchronously.
+ * Offset is the data offset within the page.
+ */
+static int
+smb_writepage_sync(struct inode *inode, struct page *page,
+ unsigned long pageoffset, unsigned int count)
+{
+ loff_t offset;
+ char *buffer = kmap(page) + pageoffset;
+ struct smb_sb_info *server = server_from_inode(inode);
+ unsigned int wsize = smb_get_wsize(server);
+ int ret = 0;
+
+ offset = ((loff_t)page->index << PAGE_CACHE_SHIFT) + pageoffset;
+ VERBOSE("file ino=%ld, fileid=%d, count=%d@%Ld, wsize=%d\n",
+ inode->i_ino, SMB_I(inode)->fileid, count, offset, wsize);
+
+ do {
+ int write_ret;
+
+ if (count < wsize)
+ wsize = count;
+
+ write_ret = server->ops->write(inode, offset, wsize, buffer);
+ if (write_ret < 0) {
+ PARANOIA("failed write, wsize=%d, write_ret=%d\n",
+ wsize, write_ret);
+ ret = write_ret;
+ break;
+ }
+ /* N.B. what if result < wsize?? */
+#ifdef SMBFS_PARANOIA
+ if (write_ret < wsize)
+ PARANOIA("short write, wsize=%d, write_ret=%d\n",
+ wsize, write_ret);
+#endif
+ buffer += wsize;
+ offset += wsize;
+ count -= wsize;
+ /*
+ * Update the inode now rather than waiting for a refresh.
+ */
+ inode->i_mtime = inode->i_atime = current_fs_time(inode->i_sb);
+ SMB_I(inode)->flags |= SMB_F_LOCALWRITE;
+ if (offset > inode->i_size)
+ inode->i_size = offset;
+ } while (count);
+
+ kunmap(page);
+ return ret;
+}
+
+/*
+ * Write a page to the server. This will be used for NFS swapping only
+ * (for now), and we currently do this synchronously only.
+ *
+ * We are called with the page locked and we unlock it when done.
+ */
+static int
+smb_writepage(struct page *page, struct writeback_control *wbc)
+{
+ struct address_space *mapping = page->mapping;
+ struct inode *inode;
+ unsigned long end_index;
+ unsigned offset = PAGE_CACHE_SIZE;
+ int err;
+
+ if (!mapping)
+ BUG();
+ inode = mapping->host;
+ if (!inode)
+ BUG();
+
+ end_index = inode->i_size >> PAGE_CACHE_SHIFT;
+
+ /* easy case */
+ if (page->index < end_index)
+ goto do_it;
+ /* things got complicated... */
+ offset = inode->i_size & (PAGE_CACHE_SIZE-1);
+ /* OK, are we completely out? */
+ if (page->index >= end_index+1 || !offset)
+ return 0; /* truncated - don't care */
+do_it:
+ page_cache_get(page);
+ err = smb_writepage_sync(inode, page, 0, offset);
+ SetPageUptodate(page);
+ unlock_page(page);
+ page_cache_release(page);
+ return err;
+}
+
+static int
+smb_updatepage(struct file *file, struct page *page, unsigned long offset,
+ unsigned int count)
+{
+ struct dentry *dentry = file->f_dentry;
+
+ DEBUG1("(%s/%s %d@%ld)\n", DENTRY_PATH(dentry),
+ count, (page->index << PAGE_CACHE_SHIFT)+offset);
+
+ return smb_writepage_sync(dentry->d_inode, page, offset, count);
+}
+
+static ssize_t
+smb_file_read(struct file * file, char __user * buf, size_t count, loff_t *ppos)
+{
+ struct dentry * dentry = file->f_dentry;
+ ssize_t status;
+
+ VERBOSE("file %s/%s, count=%lu@%lu\n", DENTRY_PATH(dentry),
+ (unsigned long) count, (unsigned long) *ppos);
+
+ status = smb_revalidate_inode(dentry);
+ if (status) {
+ PARANOIA("%s/%s validation failed, error=%Zd\n",
+ DENTRY_PATH(dentry), status);
+ goto out;
+ }
+
+ VERBOSE("before read, size=%ld, flags=%x, atime=%ld\n",
+ (long)dentry->d_inode->i_size,
+ dentry->d_inode->i_flags, dentry->d_inode->i_atime);
+
+ status = generic_file_read(file, buf, count, ppos);
+out:
+ return status;
+}
+
+static int
+smb_file_mmap(struct file * file, struct vm_area_struct * vma)
+{
+ struct dentry * dentry = file->f_dentry;
+ int status;
+
+ VERBOSE("file %s/%s, address %lu - %lu\n",
+ DENTRY_PATH(dentry), vma->vm_start, vma->vm_end);
+
+ status = smb_revalidate_inode(dentry);
+ if (status) {
+ PARANOIA("%s/%s validation failed, error=%d\n",
+ DENTRY_PATH(dentry), status);
+ goto out;
+ }
+ status = generic_file_mmap(file, vma);
+out:
+ return status;
+}
+
+static ssize_t
+smb_file_sendfile(struct file *file, loff_t *ppos,
+ size_t count, read_actor_t actor, void *target)
+{
+ struct dentry *dentry = file->f_dentry;
+ ssize_t status;
+
+ VERBOSE("file %s/%s, pos=%Ld, count=%d\n",
+ DENTRY_PATH(dentry), *ppos, count);
+
+ status = smb_revalidate_inode(dentry);
+ if (status) {
+ PARANOIA("%s/%s validation failed, error=%Zd\n",
+ DENTRY_PATH(dentry), status);
+ goto out;
+ }
+ status = generic_file_sendfile(file, ppos, count, actor, target);
+out:
+ return status;
+}
+
+/*
+ * This does the "real" work of the write. The generic routine has
+ * allocated the page, locked it, done all the page alignment stuff
+ * calculations etc. Now we should just copy the data from user
+ * space and write it back to the real medium..
+ *
+ * If the writer ends up delaying the write, the writer needs to
+ * increment the page use counts until he is done with the page.
+ */
+static int smb_prepare_write(struct file *file, struct page *page,
+ unsigned offset, unsigned to)
+{
+ return 0;
+}
+
+static int smb_commit_write(struct file *file, struct page *page,
+ unsigned offset, unsigned to)
+{
+ int status;
+
+ status = -EFAULT;
+ lock_kernel();
+ status = smb_updatepage(file, page, offset, to-offset);
+ unlock_kernel();
+ return status;
+}
+
+struct address_space_operations smb_file_aops = {
+ .readpage = smb_readpage,
+ .writepage = smb_writepage,
+ .prepare_write = smb_prepare_write,
+ .commit_write = smb_commit_write
+};
+
+/*
+ * Write to a file (through the page cache).
+ */
+static ssize_t
+smb_file_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+{
+ struct dentry * dentry = file->f_dentry;
+ ssize_t result;
+
+ VERBOSE("file %s/%s, count=%lu@%lu\n",
+ DENTRY_PATH(dentry),
+ (unsigned long) count, (unsigned long) *ppos);
+
+ result = smb_revalidate_inode(dentry);
+ if (result) {
+ PARANOIA("%s/%s validation failed, error=%Zd\n",
+ DENTRY_PATH(dentry), result);
+ goto out;
+ }
+
+ result = smb_open(dentry, SMB_O_WRONLY);
+ if (result)
+ goto out;
+
+ if (count > 0) {
+ result = generic_file_write(file, buf, count, ppos);
+ VERBOSE("pos=%ld, size=%ld, mtime=%ld, atime=%ld\n",
+ (long) file->f_pos, (long) dentry->d_inode->i_size,
+ dentry->d_inode->i_mtime, dentry->d_inode->i_atime);
+ }
+out:
+ return result;
+}
+
+static int
+smb_file_open(struct inode *inode, struct file * file)
+{
+ int result;
+ struct dentry *dentry = file->f_dentry;
+ int smb_mode = (file->f_mode & O_ACCMODE) - 1;
+
+ lock_kernel();
+ result = smb_open(dentry, smb_mode);
+ if (result)
+ goto out;
+ SMB_I(inode)->openers++;
+out:
+ unlock_kernel();
+ return result;
+}
+
+static int
+smb_file_release(struct inode *inode, struct file * file)
+{
+ lock_kernel();
+ if (!--SMB_I(inode)->openers) {
+ /* We must flush any dirty pages now as we won't be able to
+ write anything after close. mmap can trigger this.
+ "openers" should perhaps include mmap'ers ... */
+ filemap_fdatawrite(inode->i_mapping);
+ filemap_fdatawait(inode->i_mapping);
+ smb_close(inode);
+ }
+ unlock_kernel();
+ return 0;
+}
+
+/*
+ * Check whether the required access is compatible with
+ * an inode's permission. SMB doesn't recognize superuser
+ * privileges, so we need our own check for this.
+ */
+static int
+smb_file_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+ int mode = inode->i_mode;
+ int error = 0;
+
+ VERBOSE("mode=%x, mask=%x\n", mode, mask);
+
+ /* Look at user permissions */
+ mode >>= 6;
+ if ((mode & 7 & mask) != mask)
+ error = -EACCES;
+ return error;
+}
+
+struct file_operations smb_file_operations =
+{
+ .llseek = remote_llseek,
+ .read = smb_file_read,
+ .write = smb_file_write,
+ .ioctl = smb_ioctl,
+ .mmap = smb_file_mmap,
+ .open = smb_file_open,
+ .release = smb_file_release,
+ .fsync = smb_fsync,
+ .sendfile = smb_file_sendfile,
+};
+
+struct inode_operations smb_file_inode_operations =
+{
+ .permission = smb_file_permission,
+ .getattr = smb_getattr,
+ .setattr = smb_notify_change,
+};
diff --git a/fs/smbfs/getopt.c b/fs/smbfs/getopt.c
new file mode 100644
index 000000000000..7ae0f5273ab1
--- /dev/null
+++ b/fs/smbfs/getopt.c
@@ -0,0 +1,64 @@
+/*
+ * getopt.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/net.h>
+
+#include "getopt.h"
+
+/**
+ * smb_getopt - option parser
+ * @caller: name of the caller, for error messages
+ * @options: the options string
+ * @opts: an array of &struct option entries controlling parser operations
+ * @optopt: output; will contain the current option
+ * @optarg: output; will contain the value (if one exists)
+ * @flag: output; may be NULL; should point to a long for or'ing flags
+ * @value: output; may be NULL; will be overwritten with the integer value
+ * of the current argument.
+ *
+ * Helper to parse options on the format used by mount ("a=b,c=d,e,f").
+ * Returns opts->val if a matching entry in the 'opts' array is found,
+ * 0 when no more tokens are found, -1 if an error is encountered.
+ */
+int smb_getopt(char *caller, char **options, struct option *opts,
+ char **optopt, char **optarg, unsigned long *flag,
+ unsigned long *value)
+{
+ char *token;
+ char *val;
+ int i;
+
+ do {
+ if ((token = strsep(options, ",")) == NULL)
+ return 0;
+ } while (*token == '\0');
+ *optopt = token;
+
+ *optarg = NULL;
+ if ((val = strchr (token, '=')) != NULL) {
+ *val++ = 0;
+ if (value)
+ *value = simple_strtoul(val, NULL, 0);
+ *optarg = val;
+ }
+
+ for (i = 0; opts[i].name != NULL; i++) {
+ if (!strcmp(opts[i].name, token)) {
+ if (!opts[i].flag && (!val || !*val)) {
+ printk("%s: the %s option requires an argument\n",
+ caller, token);
+ return -1;
+ }
+
+ if (flag && opts[i].flag)
+ *flag |= opts[i].flag;
+
+ return opts[i].val;
+ }
+ }
+ printk("%s: Unrecognized mount option %s\n", caller, token);
+ return -1;
+}
diff --git a/fs/smbfs/getopt.h b/fs/smbfs/getopt.h
new file mode 100644
index 000000000000..146219ac7c46
--- /dev/null
+++ b/fs/smbfs/getopt.h
@@ -0,0 +1,14 @@
+#ifndef _LINUX_GETOPT_H
+#define _LINUX_GETOPT_H
+
+struct option {
+ const char *name;
+ unsigned long flag;
+ int val;
+};
+
+extern int smb_getopt(char *caller, char **options, struct option *opts,
+ char **optopt, char **optarg, unsigned long *flag,
+ unsigned long *value);
+
+#endif /* _LINUX_GETOPT_H */
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
new file mode 100644
index 000000000000..4765aaac9fd2
--- /dev/null
+++ b/fs/smbfs/inode.c
@@ -0,0 +1,849 @@
+/*
+ * inode.c
+ *
+ * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
+ * Copyright (C) 1997 by Volker Lendecke
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/file.h>
+#include <linux/dcache.h>
+#include <linux/smp_lock.h>
+#include <linux/nls.h>
+#include <linux/seq_file.h>
+#include <linux/mount.h>
+#include <linux/net.h>
+#include <linux/vfs.h>
+#include <linux/highuid.h>
+#include <linux/smb_fs.h>
+#include <linux/smbno.h>
+#include <linux/smb_mount.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include "smb_debug.h"
+#include "getopt.h"
+#include "proto.h"
+
+/* Always pick a default string */
+#ifdef CONFIG_SMB_NLS_REMOTE
+#define SMB_NLS_REMOTE CONFIG_SMB_NLS_REMOTE
+#else
+#define SMB_NLS_REMOTE ""
+#endif
+
+#define SMB_TTL_DEFAULT 1000
+
+static void smb_delete_inode(struct inode *);
+static void smb_put_super(struct super_block *);
+static int smb_statfs(struct super_block *, struct kstatfs *);
+static int smb_show_options(struct seq_file *, struct vfsmount *);
+
+static kmem_cache_t *smb_inode_cachep;
+
+static struct inode *smb_alloc_inode(struct super_block *sb)
+{
+ struct smb_inode_info *ei;
+ ei = (struct smb_inode_info *)kmem_cache_alloc(smb_inode_cachep, SLAB_KERNEL);
+ if (!ei)
+ return NULL;
+ return &ei->vfs_inode;
+}
+
+static void smb_destroy_inode(struct inode *inode)
+{
+ kmem_cache_free(smb_inode_cachep, SMB_I(inode));
+}
+
+static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+{
+ struct smb_inode_info *ei = (struct smb_inode_info *) foo;
+ unsigned long flagmask = SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR;
+
+ if ((flags & flagmask) == SLAB_CTOR_CONSTRUCTOR)
+ inode_init_once(&ei->vfs_inode);
+}
+
+static int init_inodecache(void)
+{
+ smb_inode_cachep = kmem_cache_create("smb_inode_cache",
+ sizeof(struct smb_inode_info),
+ 0, SLAB_RECLAIM_ACCOUNT,
+ init_once, NULL);
+ if (smb_inode_cachep == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+static void destroy_inodecache(void)
+{
+ if (kmem_cache_destroy(smb_inode_cachep))
+ printk(KERN_INFO "smb_inode_cache: not all structures were freed\n");
+}
+
+static int smb_remount(struct super_block *sb, int *flags, char *data)
+{
+ *flags |= MS_NODIRATIME;
+ return 0;
+}
+
+static struct super_operations smb_sops =
+{
+ .alloc_inode = smb_alloc_inode,
+ .destroy_inode = smb_destroy_inode,
+ .drop_inode = generic_delete_inode,
+ .delete_inode = smb_delete_inode,
+ .put_super = smb_put_super,
+ .statfs = smb_statfs,
+ .show_options = smb_show_options,
+ .remount_fs = smb_remount,
+};
+
+
+/* We are always generating a new inode here */
+struct inode *
+smb_iget(struct super_block *sb, struct smb_fattr *fattr)
+{
+ struct smb_sb_info *server = SMB_SB(sb);
+ struct inode *result;
+
+ DEBUG1("smb_iget: %p\n", fattr);
+
+ result = new_inode(sb);
+ if (!result)
+ return result;
+ result->i_ino = fattr->f_ino;
+ SMB_I(result)->open = 0;
+ SMB_I(result)->fileid = 0;
+ SMB_I(result)->access = 0;
+ SMB_I(result)->flags = 0;
+ SMB_I(result)->closed = 0;
+ SMB_I(result)->openers = 0;
+ smb_set_inode_attr(result, fattr);
+ if (S_ISREG(result->i_mode)) {
+ result->i_op = &smb_file_inode_operations;
+ result->i_fop = &smb_file_operations;
+ result->i_data.a_ops = &smb_file_aops;
+ } else if (S_ISDIR(result->i_mode)) {
+ if (server->opt.capabilities & SMB_CAP_UNIX)
+ result->i_op = &smb_dir_inode_operations_unix;
+ else
+ result->i_op = &smb_dir_inode_operations;
+ result->i_fop = &smb_dir_operations;
+ } else if (S_ISLNK(result->i_mode)) {
+ result->i_op = &smb_link_inode_operations;
+ } else {
+ init_special_inode(result, result->i_mode, fattr->f_rdev);
+ }
+ insert_inode_hash(result);
+ return result;
+}
+
+/*
+ * Copy the inode data to a smb_fattr structure.
+ */
+void
+smb_get_inode_attr(struct inode *inode, struct smb_fattr *fattr)
+{
+ memset(fattr, 0, sizeof(struct smb_fattr));
+ fattr->f_mode = inode->i_mode;
+ fattr->f_nlink = inode->i_nlink;
+ fattr->f_ino = inode->i_ino;
+ fattr->f_uid = inode->i_uid;
+ fattr->f_gid = inode->i_gid;
+ fattr->f_size = inode->i_size;
+ fattr->f_mtime = inode->i_mtime;
+ fattr->f_ctime = inode->i_ctime;
+ fattr->f_atime = inode->i_atime;
+ fattr->f_blksize= inode->i_blksize;
+ fattr->f_blocks = inode->i_blocks;
+
+ fattr->attr = SMB_I(inode)->attr;
+ /*
+ * Keep the attributes in sync with the inode permissions.
+ */
+ if (fattr->f_mode & S_IWUSR)
+ fattr->attr &= ~aRONLY;
+ else
+ fattr->attr |= aRONLY;
+}
+
+/*
+ * Update the inode, possibly causing it to invalidate its pages if mtime/size
+ * is different from last time.
+ */
+void
+smb_set_inode_attr(struct inode *inode, struct smb_fattr *fattr)
+{
+ struct smb_inode_info *ei = SMB_I(inode);
+
+ /*
+ * A size change should have a different mtime, or same mtime
+ * but different size.
+ */
+ time_t last_time = inode->i_mtime.tv_sec;
+ loff_t last_sz = inode->i_size;
+
+ inode->i_mode = fattr->f_mode;
+ inode->i_nlink = fattr->f_nlink;
+ inode->i_uid = fattr->f_uid;
+ inode->i_gid = fattr->f_gid;
+ inode->i_ctime = fattr->f_ctime;
+ inode->i_blksize= fattr->f_blksize;
+ inode->i_blocks = fattr->f_blocks;
+ inode->i_size = fattr->f_size;
+ inode->i_mtime = fattr->f_mtime;
+ inode->i_atime = fattr->f_atime;
+ ei->attr = fattr->attr;
+
+ /*
+ * Update the "last time refreshed" field for revalidation.
+ */
+ ei->oldmtime = jiffies;
+
+ if (inode->i_mtime.tv_sec != last_time || inode->i_size != last_sz) {
+ VERBOSE("%ld changed, old=%ld, new=%ld, oz=%ld, nz=%ld\n",
+ inode->i_ino,
+ (long) last_time, (long) inode->i_mtime,
+ (long) last_sz, (long) inode->i_size);
+
+ if (!S_ISDIR(inode->i_mode))
+ invalidate_remote_inode(inode);
+ }
+}
+
+/*
+ * This is called if the connection has gone bad ...
+ * try to kill off all the current inodes.
+ */
+void
+smb_invalidate_inodes(struct smb_sb_info *server)
+{
+ VERBOSE("\n");
+ shrink_dcache_sb(SB_of(server));
+ invalidate_inodes(SB_of(server));
+}
+
+/*
+ * This is called to update the inode attributes after
+ * we've made changes to a file or directory.
+ */
+static int
+smb_refresh_inode(struct dentry *dentry)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+ struct smb_fattr fattr;
+
+ error = smb_proc_getattr(dentry, &fattr);
+ if (!error) {
+ smb_renew_times(dentry);
+ /*
+ * Check whether the type part of the mode changed,
+ * and don't update the attributes if it did.
+ *
+ * And don't dick with the root inode
+ */
+ if (inode->i_ino == 2)
+ return error;
+ if (S_ISLNK(inode->i_mode))
+ return error; /* VFS will deal with it */
+
+ if ((inode->i_mode & S_IFMT) == (fattr.f_mode & S_IFMT)) {
+ smb_set_inode_attr(inode, &fattr);
+ } else {
+ /*
+ * Big trouble! The inode has become a new object,
+ * so any operations attempted on it are invalid.
+ *
+ * To limit damage, mark the inode as bad so that
+ * subsequent lookup validations will fail.
+ */
+ PARANOIA("%s/%s changed mode, %07o to %07o\n",
+ DENTRY_PATH(dentry),
+ inode->i_mode, fattr.f_mode);
+
+ fattr.f_mode = inode->i_mode; /* save mode */
+ make_bad_inode(inode);
+ inode->i_mode = fattr.f_mode; /* restore mode */
+ /*
+ * No need to worry about unhashing the dentry: the
+ * lookup validation will see that the inode is bad.
+ * But we do want to invalidate the caches ...
+ */
+ if (!S_ISDIR(inode->i_mode))
+ invalidate_remote_inode(inode);
+ else
+ smb_invalid_dir_cache(inode);
+ error = -EIO;
+ }
+ }
+ return error;
+}
+
+/*
+ * This is called when we want to check whether the inode
+ * has changed on the server. If it has changed, we must
+ * invalidate our local caches.
+ */
+int
+smb_revalidate_inode(struct dentry *dentry)
+{
+ struct smb_sb_info *s = server_from_dentry(dentry);
+ struct inode *inode = dentry->d_inode;
+ int error = 0;
+
+ DEBUG1("smb_revalidate_inode\n");
+ lock_kernel();
+
+ /*
+ * Check whether we've recently refreshed the inode.
+ */
+ if (time_before(jiffies, SMB_I(inode)->oldmtime + SMB_MAX_AGE(s))) {
+ VERBOSE("up-to-date, ino=%ld, jiffies=%lu, oldtime=%lu\n",
+ inode->i_ino, jiffies, SMB_I(inode)->oldmtime);
+ goto out;
+ }
+
+ error = smb_refresh_inode(dentry);
+out:
+ unlock_kernel();
+ return error;
+}
+
+/*
+ * This routine is called when i_nlink == 0 and i_count goes to 0.
+ * All blocking cleanup operations need to go here to avoid races.
+ */
+static void
+smb_delete_inode(struct inode *ino)
+{
+ DEBUG1("ino=%ld\n", ino->i_ino);
+ lock_kernel();
+ if (smb_close(ino))
+ PARANOIA("could not close inode %ld\n", ino->i_ino);
+ unlock_kernel();
+ clear_inode(ino);
+}
+
+static struct option opts[] = {
+ { "version", 0, 'v' },
+ { "win95", SMB_MOUNT_WIN95, 1 },
+ { "oldattr", SMB_MOUNT_OLDATTR, 1 },
+ { "dirattr", SMB_MOUNT_DIRATTR, 1 },
+ { "case", SMB_MOUNT_CASE, 1 },
+ { "uid", 0, 'u' },
+ { "gid", 0, 'g' },
+ { "file_mode", 0, 'f' },
+ { "dir_mode", 0, 'd' },
+ { "iocharset", 0, 'i' },
+ { "codepage", 0, 'c' },
+ { "ttl", 0, 't' },
+ { NULL, 0, 0}
+};
+
+static int
+parse_options(struct smb_mount_data_kernel *mnt, char *options)
+{
+ int c;
+ unsigned long flags;
+ unsigned long value;
+ char *optarg;
+ char *optopt;
+
+ flags = 0;
+ while ( (c = smb_getopt("smbfs", &options, opts,
+ &optopt, &optarg, &flags, &value)) > 0) {
+
+ VERBOSE("'%s' -> '%s'\n", optopt, optarg ? optarg : "<none>");
+ switch (c) {
+ case 1:
+ /* got a "flag" option */
+ break;
+ case 'v':
+ if (value != SMB_MOUNT_VERSION) {
+ printk ("smbfs: Bad mount version %ld, expected %d\n",
+ value, SMB_MOUNT_VERSION);
+ return 0;
+ }
+ mnt->version = value;
+ break;
+ case 'u':
+ mnt->uid = value;
+ flags |= SMB_MOUNT_UID;
+ break;
+ case 'g':
+ mnt->gid = value;
+ flags |= SMB_MOUNT_GID;
+ break;
+ case 'f':
+ mnt->file_mode = (value & S_IRWXUGO) | S_IFREG;
+ flags |= SMB_MOUNT_FMODE;
+ break;
+ case 'd':
+ mnt->dir_mode = (value & S_IRWXUGO) | S_IFDIR;
+ flags |= SMB_MOUNT_DMODE;
+ break;
+ case 'i':
+ strlcpy(mnt->codepage.local_name, optarg,
+ SMB_NLS_MAXNAMELEN);
+ break;
+ case 'c':
+ strlcpy(mnt->codepage.remote_name, optarg,
+ SMB_NLS_MAXNAMELEN);
+ break;
+ case 't':
+ mnt->ttl = value;
+ break;
+ default:
+ printk ("smbfs: Unrecognized mount option %s\n",
+ optopt);
+ return -1;
+ }
+ }
+ mnt->flags = flags;
+ return c;
+}
+
+/*
+ * smb_show_options() is for displaying mount options in /proc/mounts.
+ * It tries to avoid showing settings that were not changed from their
+ * defaults.
+ */
+static int
+smb_show_options(struct seq_file *s, struct vfsmount *m)
+{
+ struct smb_mount_data_kernel *mnt = SMB_SB(m->mnt_sb)->mnt;
+ int i;
+
+ for (i = 0; opts[i].name != NULL; i++)
+ if (mnt->flags & opts[i].flag)
+ seq_printf(s, ",%s", opts[i].name);
+
+ if (mnt->flags & SMB_MOUNT_UID)
+ seq_printf(s, ",uid=%d", mnt->uid);
+ if (mnt->flags & SMB_MOUNT_GID)
+ seq_printf(s, ",gid=%d", mnt->gid);
+ if (mnt->mounted_uid != 0)
+ seq_printf(s, ",mounted_uid=%d", mnt->mounted_uid);
+
+ /*
+ * Defaults for file_mode and dir_mode are unknown to us; they
+ * depend on the current umask of the user doing the mount.
+ */
+ if (mnt->flags & SMB_MOUNT_FMODE)
+ seq_printf(s, ",file_mode=%04o", mnt->file_mode & S_IRWXUGO);
+ if (mnt->flags & SMB_MOUNT_DMODE)
+ seq_printf(s, ",dir_mode=%04o", mnt->dir_mode & S_IRWXUGO);
+
+ if (strcmp(mnt->codepage.local_name, CONFIG_NLS_DEFAULT))
+ seq_printf(s, ",iocharset=%s", mnt->codepage.local_name);
+ if (strcmp(mnt->codepage.remote_name, SMB_NLS_REMOTE))
+ seq_printf(s, ",codepage=%s", mnt->codepage.remote_name);
+
+ if (mnt->ttl != SMB_TTL_DEFAULT)
+ seq_printf(s, ",ttl=%d", mnt->ttl);
+
+ return 0;
+}
+
+static void
+smb_unload_nls(struct smb_sb_info *server)
+{
+ if (server->remote_nls) {
+ unload_nls(server->remote_nls);
+ server->remote_nls = NULL;
+ }
+ if (server->local_nls) {
+ unload_nls(server->local_nls);
+ server->local_nls = NULL;
+ }
+}
+
+static void
+smb_put_super(struct super_block *sb)
+{
+ struct smb_sb_info *server = SMB_SB(sb);
+
+ smb_lock_server(server);
+ server->state = CONN_INVALID;
+ smbiod_unregister_server(server);
+
+ smb_close_socket(server);
+
+ if (server->conn_pid)
+ kill_proc(server->conn_pid, SIGTERM, 1);
+
+ smb_kfree(server->ops);
+ smb_unload_nls(server);
+ sb->s_fs_info = NULL;
+ smb_unlock_server(server);
+ smb_kfree(server);
+}
+
+static int smb_fill_super(struct super_block *sb, void *raw_data, int silent)
+{
+ struct smb_sb_info *server;
+ struct smb_mount_data_kernel *mnt;
+ struct smb_mount_data *oldmnt;
+ struct inode *root_inode;
+ struct smb_fattr root;
+ int ver;
+ void *mem;
+
+ if (!raw_data)
+ goto out_no_data;
+
+ oldmnt = (struct smb_mount_data *) raw_data;
+ ver = oldmnt->version;
+ if (ver != SMB_MOUNT_OLDVERSION && cpu_to_be32(ver) != SMB_MOUNT_ASCII)
+ goto out_wrong_data;
+
+ sb->s_flags |= MS_NODIRATIME;
+ sb->s_blocksize = 1024; /* Eh... Is this correct? */
+ sb->s_blocksize_bits = 10;
+ sb->s_magic = SMB_SUPER_MAGIC;
+ sb->s_op = &smb_sops;
+ sb->s_time_gran = 100;
+
+ server = smb_kmalloc(sizeof(struct smb_sb_info), GFP_KERNEL);
+ if (!server)
+ goto out_no_server;
+ sb->s_fs_info = server;
+ memset(server, 0, sizeof(struct smb_sb_info));
+
+ server->super_block = sb;
+ server->mnt = NULL;
+ server->sock_file = NULL;
+ init_waitqueue_head(&server->conn_wq);
+ init_MUTEX(&server->sem);
+ INIT_LIST_HEAD(&server->entry);
+ INIT_LIST_HEAD(&server->xmitq);
+ INIT_LIST_HEAD(&server->recvq);
+ server->conn_error = 0;
+ server->conn_pid = 0;
+ server->state = CONN_INVALID; /* no connection yet */
+ server->generation = 0;
+
+ /* Allocate the global temp buffer and some superblock helper structs */
+ /* FIXME: move these to the smb_sb_info struct */
+ VERBOSE("alloc chunk = %d\n", sizeof(struct smb_ops) +
+ sizeof(struct smb_mount_data_kernel));
+ mem = smb_kmalloc(sizeof(struct smb_ops) +
+ sizeof(struct smb_mount_data_kernel), GFP_KERNEL);
+ if (!mem)
+ goto out_no_mem;
+
+ server->ops = mem;
+ smb_install_null_ops(server->ops);
+ server->mnt = mem + sizeof(struct smb_ops);
+
+ /* Setup NLS stuff */
+ server->remote_nls = NULL;
+ server->local_nls = NULL;
+
+ mnt = server->mnt;
+
+ memset(mnt, 0, sizeof(struct smb_mount_data_kernel));
+ strlcpy(mnt->codepage.local_name, CONFIG_NLS_DEFAULT,
+ SMB_NLS_MAXNAMELEN);
+ strlcpy(mnt->codepage.remote_name, SMB_NLS_REMOTE,
+ SMB_NLS_MAXNAMELEN);
+
+ mnt->ttl = SMB_TTL_DEFAULT;
+ if (ver == SMB_MOUNT_OLDVERSION) {
+ mnt->version = oldmnt->version;
+
+ SET_UID(mnt->uid, oldmnt->uid);
+ SET_GID(mnt->gid, oldmnt->gid);
+
+ mnt->file_mode = (oldmnt->file_mode & S_IRWXUGO) | S_IFREG;
+ mnt->dir_mode = (oldmnt->dir_mode & S_IRWXUGO) | S_IFDIR;
+
+ mnt->flags = (oldmnt->file_mode >> 9) | SMB_MOUNT_UID |
+ SMB_MOUNT_GID | SMB_MOUNT_FMODE | SMB_MOUNT_DMODE;
+ } else {
+ mnt->file_mode = S_IRWXU | S_IRGRP | S_IXGRP |
+ S_IROTH | S_IXOTH | S_IFREG;
+ mnt->dir_mode = S_IRWXU | S_IRGRP | S_IXGRP |
+ S_IROTH | S_IXOTH | S_IFDIR;
+ if (parse_options(mnt, raw_data))
+ goto out_bad_option;
+ }
+ mnt->mounted_uid = current->uid;
+ smb_setcodepage(server, &mnt->codepage);
+
+ /*
+ * Display the enabled options
+ * Note: smb_proc_getattr uses these in 2.4 (but was changed in 2.2)
+ */
+ if (mnt->flags & SMB_MOUNT_OLDATTR)
+ printk("SMBFS: Using core getattr (Win 95 speedup)\n");
+ else if (mnt->flags & SMB_MOUNT_DIRATTR)
+ printk("SMBFS: Using dir ff getattr\n");
+
+ if (smbiod_register_server(server) < 0) {
+ printk(KERN_ERR "smbfs: failed to start smbiod\n");
+ goto out_no_smbiod;
+ }
+
+ /*
+ * Keep the super block locked while we get the root inode.
+ */
+ smb_init_root_dirent(server, &root, sb);
+ root_inode = smb_iget(sb, &root);
+ if (!root_inode)
+ goto out_no_root;
+
+ sb->s_root = d_alloc_root(root_inode);
+ if (!sb->s_root)
+ goto out_no_root;
+
+ smb_new_dentry(sb->s_root);
+
+ return 0;
+
+out_no_root:
+ iput(root_inode);
+out_no_smbiod:
+ smb_unload_nls(server);
+out_bad_option:
+ smb_kfree(mem);
+out_no_mem:
+ if (!server->mnt)
+ printk(KERN_ERR "smb_fill_super: allocation failure\n");
+ sb->s_fs_info = NULL;
+ smb_kfree(server);
+ goto out_fail;
+out_wrong_data:
+ printk(KERN_ERR "smbfs: mount_data version %d is not supported\n", ver);
+ goto out_fail;
+out_no_data:
+ printk(KERN_ERR "smb_fill_super: missing data argument\n");
+out_fail:
+ return -EINVAL;
+out_no_server:
+ printk(KERN_ERR "smb_fill_super: cannot allocate struct smb_sb_info\n");
+ return -ENOMEM;
+}
+
+static int
+smb_statfs(struct super_block *sb, struct kstatfs *buf)
+{
+ int result;
+
+ lock_kernel();
+
+ result = smb_proc_dskattr(sb, buf);
+
+ unlock_kernel();
+
+ buf->f_type = SMB_SUPER_MAGIC;
+ buf->f_namelen = SMB_MAXPATHLEN;
+ return result;
+}
+
+int smb_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
+{
+ int err = smb_revalidate_inode(dentry);
+ if (!err)
+ generic_fillattr(dentry->d_inode, stat);
+ return err;
+}
+
+int
+smb_notify_change(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = dentry->d_inode;
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ unsigned int mask = (S_IFREG | S_IFDIR | S_IRWXUGO);
+ int error, changed, refresh = 0;
+ struct smb_fattr fattr;
+
+ lock_kernel();
+
+ error = smb_revalidate_inode(dentry);
+ if (error)
+ goto out;
+
+ if ((error = inode_change_ok(inode, attr)) < 0)
+ goto out;
+
+ error = -EPERM;
+ if ((attr->ia_valid & ATTR_UID) && (attr->ia_uid != server->mnt->uid))
+ goto out;
+
+ if ((attr->ia_valid & ATTR_GID) && (attr->ia_uid != server->mnt->gid))
+ goto out;
+
+ if ((attr->ia_valid & ATTR_MODE) && (attr->ia_mode & ~mask))
+ goto out;
+
+ if ((attr->ia_valid & ATTR_SIZE) != 0) {
+ VERBOSE("changing %s/%s, old size=%ld, new size=%ld\n",
+ DENTRY_PATH(dentry),
+ (long) inode->i_size, (long) attr->ia_size);
+
+ filemap_fdatawrite(inode->i_mapping);
+ filemap_fdatawait(inode->i_mapping);
+
+ error = smb_open(dentry, O_WRONLY);
+ if (error)
+ goto out;
+ error = server->ops->truncate(inode, attr->ia_size);
+ if (error)
+ goto out;
+ error = vmtruncate(inode, attr->ia_size);
+ if (error)
+ goto out;
+ refresh = 1;
+ }
+
+ if (server->opt.capabilities & SMB_CAP_UNIX) {
+ /* For now we don't want to set the size with setattr_unix */
+ attr->ia_valid &= ~ATTR_SIZE;
+ /* FIXME: only call if we actually want to set something? */
+ error = smb_proc_setattr_unix(dentry, attr, 0, 0);
+ if (!error)
+ refresh = 1;
+
+ goto out;
+ }
+
+ /*
+ * Initialize the fattr and check for changed fields.
+ * Note: CTIME under SMB is creation time rather than
+ * change time, so we don't attempt to change it.
+ */
+ smb_get_inode_attr(inode, &fattr);
+
+ changed = 0;
+ if ((attr->ia_valid & ATTR_MTIME) != 0) {
+ fattr.f_mtime = attr->ia_mtime;
+ changed = 1;
+ }
+ if ((attr->ia_valid & ATTR_ATIME) != 0) {
+ fattr.f_atime = attr->ia_atime;
+ /* Earlier protocols don't have an access time */
+ if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2)
+ changed = 1;
+ }
+ if (changed) {
+ error = smb_proc_settime(dentry, &fattr);
+ if (error)
+ goto out;
+ refresh = 1;
+ }
+
+ /*
+ * Check for mode changes ... we're extremely limited in
+ * what can be set for SMB servers: just the read-only bit.
+ */
+ if ((attr->ia_valid & ATTR_MODE) != 0) {
+ VERBOSE("%s/%s mode change, old=%x, new=%x\n",
+ DENTRY_PATH(dentry), fattr.f_mode, attr->ia_mode);
+ changed = 0;
+ if (attr->ia_mode & S_IWUSR) {
+ if (fattr.attr & aRONLY) {
+ fattr.attr &= ~aRONLY;
+ changed = 1;
+ }
+ } else {
+ if (!(fattr.attr & aRONLY)) {
+ fattr.attr |= aRONLY;
+ changed = 1;
+ }
+ }
+ if (changed) {
+ error = smb_proc_setattr(dentry, &fattr);
+ if (error)
+ goto out;
+ refresh = 1;
+ }
+ }
+ error = 0;
+
+out:
+ if (refresh)
+ smb_refresh_inode(dentry);
+ unlock_kernel();
+ return error;
+}
+
+#ifdef DEBUG_SMB_MALLOC
+int smb_malloced;
+int smb_current_kmalloced;
+int smb_current_vmalloced;
+#endif
+
+static struct super_block *smb_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
+{
+ return get_sb_nodev(fs_type, flags, data, smb_fill_super);
+}
+
+static struct file_system_type smb_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "smbfs",
+ .get_sb = smb_get_sb,
+ .kill_sb = kill_anon_super,
+ .fs_flags = FS_BINARY_MOUNTDATA,
+};
+
+static int __init init_smb_fs(void)
+{
+ int err;
+ DEBUG1("registering ...\n");
+
+#ifdef DEBUG_SMB_MALLOC
+ smb_malloced = 0;
+ smb_current_kmalloced = 0;
+ smb_current_vmalloced = 0;
+#endif
+
+ err = init_inodecache();
+ if (err)
+ goto out_inode;
+ err = smb_init_request_cache();
+ if (err)
+ goto out_request;
+ err = register_filesystem(&smb_fs_type);
+ if (err)
+ goto out;
+ return 0;
+out:
+ smb_destroy_request_cache();
+out_request:
+ destroy_inodecache();
+out_inode:
+ return err;
+}
+
+static void __exit exit_smb_fs(void)
+{
+ DEBUG1("unregistering ...\n");
+ unregister_filesystem(&smb_fs_type);
+ smb_destroy_request_cache();
+ destroy_inodecache();
+#ifdef DEBUG_SMB_MALLOC
+ printk(KERN_DEBUG "smb_malloced: %d\n", smb_malloced);
+ printk(KERN_DEBUG "smb_current_kmalloced: %d\n",smb_current_kmalloced);
+ printk(KERN_DEBUG "smb_current_vmalloced: %d\n",smb_current_vmalloced);
+#endif
+}
+
+module_init(init_smb_fs)
+module_exit(exit_smb_fs)
+MODULE_LICENSE("GPL");
diff --git a/fs/smbfs/ioctl.c b/fs/smbfs/ioctl.c
new file mode 100644
index 000000000000..dbae1f8ea26f
--- /dev/null
+++ b/fs/smbfs/ioctl.c
@@ -0,0 +1,67 @@
+/*
+ * ioctl.c
+ *
+ * Copyright (C) 1995, 1996 by Volker Lendecke
+ * Copyright (C) 1997 by Volker Lendecke
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/ioctl.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/highuid.h>
+#include <linux/net.h>
+
+#include <linux/smb_fs.h>
+#include <linux/smb_mount.h>
+
+#include <asm/uaccess.h>
+
+#include "proto.h"
+
+int
+smb_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ struct smb_conn_opt opt;
+ int result = -EINVAL;
+
+ switch (cmd) {
+ uid16_t uid16;
+ uid_t uid32;
+ case SMB_IOC_GETMOUNTUID:
+ SET_UID(uid16, server->mnt->mounted_uid);
+ result = put_user(uid16, (uid16_t __user *) arg);
+ break;
+ case SMB_IOC_GETMOUNTUID32:
+ SET_UID(uid32, server->mnt->mounted_uid);
+ result = put_user(uid32, (uid_t __user *) arg);
+ break;
+
+ case SMB_IOC_NEWCONN:
+ /* arg is smb_conn_opt, or NULL if no connection was made */
+ if (!arg) {
+ result = 0;
+ smb_lock_server(server);
+ server->state = CONN_RETRIED;
+ printk(KERN_ERR "Connection attempt failed! [%d]\n",
+ server->conn_error);
+ smbiod_flush(server);
+ smb_unlock_server(server);
+ break;
+ }
+
+ result = -EFAULT;
+ if (!copy_from_user(&opt, (void __user *)arg, sizeof(opt)))
+ result = smb_newconn(server, &opt);
+ break;
+ default:
+ break;
+ }
+
+ return result;
+}
diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c
new file mode 100644
index 000000000000..220babe91efd
--- /dev/null
+++ b/fs/smbfs/proc.c
@@ -0,0 +1,3509 @@
+/*
+ * proc.c
+ *
+ * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
+ * Copyright (C) 1997 by Volker Lendecke
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/stat.h>
+#include <linux/fcntl.h>
+#include <linux/dcache.h>
+#include <linux/dirent.h>
+#include <linux/nls.h>
+#include <linux/smp_lock.h>
+#include <linux/net.h>
+#include <linux/vfs.h>
+#include <linux/smb_fs.h>
+#include <linux/smbno.h>
+#include <linux/smb_mount.h>
+
+#include <net/sock.h>
+
+#include <asm/string.h>
+#include <asm/div64.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+#include "request.h"
+
+
+/* Features. Undefine if they cause problems, this should perhaps be a
+ config option. */
+#define SMBFS_POSIX_UNLINK 1
+
+/* Allow smb_retry to be interrupted. */
+#define SMB_RETRY_INTR
+
+#define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN)
+#define SMB_CMD(packet) (*(packet+8))
+#define SMB_WCT(packet) (*(packet+SMB_HEADER_LEN - 1))
+
+#define SMB_DIRINFO_SIZE 43
+#define SMB_STATUS_SIZE 21
+
+#define SMB_ST_BLKSIZE (PAGE_SIZE)
+#define SMB_ST_BLKSHIFT (PAGE_SHIFT)
+
+static struct smb_ops smb_ops_core;
+static struct smb_ops smb_ops_os2;
+static struct smb_ops smb_ops_win95;
+static struct smb_ops smb_ops_winNT;
+static struct smb_ops smb_ops_unix;
+static struct smb_ops smb_ops_null;
+
+static void
+smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
+static void
+smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
+static int
+smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *fattr);
+static int
+smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
+ struct smb_fattr *fattr);
+static int
+smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
+ u16 attr);
+static int
+smb_proc_setattr_ext(struct smb_sb_info *server,
+ struct inode *inode, struct smb_fattr *fattr);
+static int
+smb_proc_query_cifsunix(struct smb_sb_info *server);
+static void
+install_ops(struct smb_ops *dst, struct smb_ops *src);
+
+
+static void
+str_upper(char *name, int len)
+{
+ while (len--)
+ {
+ if (*name >= 'a' && *name <= 'z')
+ *name -= ('a' - 'A');
+ name++;
+ }
+}
+
+#if 0
+static void
+str_lower(char *name, int len)
+{
+ while (len--)
+ {
+ if (*name >= 'A' && *name <= 'Z')
+ *name += ('a' - 'A');
+ name++;
+ }
+}
+#endif
+
+/* reverse a string inline. This is used by the dircache walking routines */
+static void reverse_string(char *buf, int len)
+{
+ char c;
+ char *end = buf+len-1;
+
+ while(buf < end) {
+ c = *buf;
+ *(buf++) = *end;
+ *(end--) = c;
+ }
+}
+
+/* no conversion, just a wrapper for memcpy. */
+static int convert_memcpy(unsigned char *output, int olen,
+ const unsigned char *input, int ilen,
+ struct nls_table *nls_from,
+ struct nls_table *nls_to)
+{
+ if (olen < ilen)
+ return -ENAMETOOLONG;
+ memcpy(output, input, ilen);
+ return ilen;
+}
+
+static inline int write_char(unsigned char ch, char *output, int olen)
+{
+ if (olen < 4)
+ return -ENAMETOOLONG;
+ sprintf(output, ":x%02x", ch);
+ return 4;
+}
+
+static inline int write_unichar(wchar_t ch, char *output, int olen)
+{
+ if (olen < 5)
+ return -ENAMETOOLONG;
+ sprintf(output, ":%04x", ch);
+ return 5;
+}
+
+/* convert from one "codepage" to another (possibly being utf8). */
+static int convert_cp(unsigned char *output, int olen,
+ const unsigned char *input, int ilen,
+ struct nls_table *nls_from,
+ struct nls_table *nls_to)
+{
+ int len = 0;
+ int n;
+ wchar_t ch;
+
+ while (ilen > 0) {
+ /* convert by changing to unicode and back to the new cp */
+ n = nls_from->char2uni(input, ilen, &ch);
+ if (n == -EINVAL) {
+ ilen--;
+ n = write_char(*input++, output, olen);
+ if (n < 0)
+ goto fail;
+ output += n;
+ olen -= n;
+ len += n;
+ continue;
+ } else if (n < 0)
+ goto fail;
+ input += n;
+ ilen -= n;
+
+ n = nls_to->uni2char(ch, output, olen);
+ if (n == -EINVAL)
+ n = write_unichar(ch, output, olen);
+ if (n < 0)
+ goto fail;
+ output += n;
+ olen -= n;
+
+ len += n;
+ }
+ return len;
+fail:
+ return n;
+}
+
+/* ----------------------------------------------------------- */
+
+/*
+ * nls_unicode
+ *
+ * This encodes/decodes little endian unicode format
+ */
+
+static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
+{
+ if (boundlen < 2)
+ return -EINVAL;
+ *out++ = uni & 0xff;
+ *out++ = uni >> 8;
+ return 2;
+}
+
+static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
+{
+ if (boundlen < 2)
+ return -EINVAL;
+ *uni = (rawstring[1] << 8) | rawstring[0];
+ return 2;
+}
+
+static struct nls_table unicode_table = {
+ .charset = "unicode",
+ .uni2char = uni2char,
+ .char2uni = char2uni,
+};
+
+/* ----------------------------------------------------------- */
+
+static int setcodepage(struct nls_table **p, char *name)
+{
+ struct nls_table *nls;
+
+ if (!name || !*name) {
+ nls = NULL;
+ } else if ( (nls = load_nls(name)) == NULL) {
+ printk (KERN_ERR "smbfs: failed to load nls '%s'\n", name);
+ return -EINVAL;
+ }
+
+ /* if already set, unload the previous one. */
+ if (*p && *p != &unicode_table)
+ unload_nls(*p);
+ *p = nls;
+
+ return 0;
+}
+
+/* Handles all changes to codepage settings. */
+int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp)
+{
+ int n = 0;
+
+ smb_lock_server(server);
+
+ /* Don't load any nls_* at all, if no remote is requested */
+ if (!*cp->remote_name)
+ goto out;
+
+ /* local */
+ n = setcodepage(&server->local_nls, cp->local_name);
+ if (n != 0)
+ goto out;
+
+ /* remote */
+ if (!strcmp(cp->remote_name, "unicode")) {
+ server->remote_nls = &unicode_table;
+ } else {
+ n = setcodepage(&server->remote_nls, cp->remote_name);
+ if (n != 0)
+ setcodepage(&server->local_nls, NULL);
+ }
+
+out:
+ if (server->local_nls != NULL && server->remote_nls != NULL)
+ server->ops->convert = convert_cp;
+ else
+ server->ops->convert = convert_memcpy;
+
+ smb_unlock_server(server);
+ return n;
+}
+
+
+/*****************************************************************************/
+/* */
+/* Encoding/Decoding section */
+/* */
+/*****************************************************************************/
+
+static __u8 *
+smb_encode_smb_length(__u8 * p, __u32 len)
+{
+ *p = 0;
+ *(p+1) = 0;
+ *(p+2) = (len & 0xFF00) >> 8;
+ *(p+3) = (len & 0xFF);
+ if (len > 0xFFFF)
+ {
+ *(p+1) = 1;
+ }
+ return p + 4;
+}
+
+/*
+ * smb_build_path: build the path to entry and name storing it in buf.
+ * The path returned will have the trailing '\0'.
+ */
+static int smb_build_path(struct smb_sb_info *server, unsigned char *buf,
+ int maxlen,
+ struct dentry *entry, struct qstr *name)
+{
+ unsigned char *path = buf;
+ int len;
+ int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE) != 0;
+
+ if (maxlen < (2<<unicode))
+ return -ENAMETOOLONG;
+
+ if (maxlen > SMB_MAXPATHLEN + 1)
+ maxlen = SMB_MAXPATHLEN + 1;
+
+ if (entry == NULL)
+ goto test_name_and_out;
+
+ /*
+ * If IS_ROOT, we have to do no walking at all.
+ */
+ if (IS_ROOT(entry) && !name) {
+ *path++ = '\\';
+ if (unicode) *path++ = '\0';
+ *path++ = '\0';
+ if (unicode) *path++ = '\0';
+ return path-buf;
+ }
+
+ /*
+ * Build the path string walking the tree backward from end to ROOT
+ * and store it in reversed order [see reverse_string()]
+ */
+ dget(entry);
+ spin_lock(&entry->d_lock);
+ while (!IS_ROOT(entry)) {
+ struct dentry *parent;
+
+ if (maxlen < (3<<unicode)) {
+ spin_unlock(&entry->d_lock);
+ dput(entry);
+ return -ENAMETOOLONG;
+ }
+
+ len = server->ops->convert(path, maxlen-2,
+ entry->d_name.name, entry->d_name.len,
+ server->local_nls, server->remote_nls);
+ if (len < 0) {
+ spin_unlock(&entry->d_lock);
+ dput(entry);
+ return len;
+ }
+ reverse_string(path, len);
+ path += len;
+ if (unicode) {
+ /* Note: reverse order */
+ *path++ = '\0';
+ maxlen--;
+ }
+ *path++ = '\\';
+ maxlen -= len+1;
+
+ parent = entry->d_parent;
+ dget(parent);
+ spin_unlock(&entry->d_lock);
+ dput(entry);
+ entry = parent;
+ spin_lock(&entry->d_lock);
+ }
+ spin_unlock(&entry->d_lock);
+ dput(entry);
+ reverse_string(buf, path-buf);
+
+ /* maxlen has space for at least one char */
+test_name_and_out:
+ if (name) {
+ if (maxlen < (3<<unicode))
+ return -ENAMETOOLONG;
+ *path++ = '\\';
+ if (unicode) {
+ *path++ = '\0';
+ maxlen--;
+ }
+ len = server->ops->convert(path, maxlen-2,
+ name->name, name->len,
+ server->local_nls, server->remote_nls);
+ if (len < 0)
+ return len;
+ path += len;
+ maxlen -= len+1;
+ }
+ /* maxlen has space for at least one char */
+ *path++ = '\0';
+ if (unicode) *path++ = '\0';
+ return path-buf;
+}
+
+static int smb_encode_path(struct smb_sb_info *server, char *buf, int maxlen,
+ struct dentry *dir, struct qstr *name)
+{
+ int result;
+
+ result = smb_build_path(server, buf, maxlen, dir, name);
+ if (result < 0)
+ goto out;
+ if (server->opt.protocol <= SMB_PROTOCOL_COREPLUS)
+ str_upper(buf, result);
+out:
+ return result;
+}
+
+/* encode_path for non-trans2 request SMBs */
+static int smb_simple_encode_path(struct smb_request *req, char **p,
+ struct dentry * entry, struct qstr * name)
+{
+ struct smb_sb_info *server = req->rq_server;
+ char *s = *p;
+ int res;
+ int maxlen = ((char *)req->rq_buffer + req->rq_bufsize) - s;
+ int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
+
+ if (!maxlen)
+ return -ENAMETOOLONG;
+ *s++ = 4; /* ASCII data format */
+
+ /*
+ * SMB Unicode strings must be 16bit aligned relative the start of the
+ * packet. If they are not they must be padded with 0.
+ */
+ if (unicode) {
+ int align = s - (char *)req->rq_buffer;
+ if (!(align & 1)) {
+ *s++ = '\0';
+ maxlen--;
+ }
+ }
+
+ res = smb_encode_path(server, s, maxlen-1, entry, name);
+ if (res < 0)
+ return res;
+ *p = s + res;
+ return 0;
+}
+
+/* The following are taken directly from msdos-fs */
+
+/* Linear day numbers of the respective 1sts in non-leap years. */
+
+static int day_n[] =
+{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
+ /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */
+
+
+static time_t
+utc2local(struct smb_sb_info *server, time_t time)
+{
+ return time - server->opt.serverzone*60;
+}
+
+static time_t
+local2utc(struct smb_sb_info *server, time_t time)
+{
+ return time + server->opt.serverzone*60;
+}
+
+/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
+
+static time_t
+date_dos2unix(struct smb_sb_info *server, __u16 date, __u16 time)
+{
+ int month, year;
+ time_t secs;
+
+ /* first subtract and mask after that... Otherwise, if
+ date == 0, bad things happen */
+ month = ((date >> 5) - 1) & 15;
+ year = date >> 9;
+ secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 *
+ ((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 &&
+ month < 2 ? 1 : 0) + 3653);
+ /* days since 1.1.70 plus 80's leap day */
+ return local2utc(server, secs);
+}
+
+
+/* Convert linear UNIX date to a MS-DOS time/date pair. */
+
+static void
+date_unix2dos(struct smb_sb_info *server,
+ int unix_date, __u16 *date, __u16 *time)
+{
+ int day, year, nl_day, month;
+
+ unix_date = utc2local(server, unix_date);
+ if (unix_date < 315532800)
+ unix_date = 315532800;
+
+ *time = (unix_date % 60) / 2 +
+ (((unix_date / 60) % 60) << 5) +
+ (((unix_date / 3600) % 24) << 11);
+
+ day = unix_date / 86400 - 3652;
+ year = day / 365;
+ if ((year + 3) / 4 + 365 * year > day)
+ year--;
+ day -= (year + 3) / 4 + 365 * year;
+ if (day == 59 && !(year & 3)) {
+ nl_day = day;
+ month = 2;
+ } else {
+ nl_day = (year & 3) || day <= 59 ? day : day - 1;
+ for (month = 0; month < 12; month++)
+ if (day_n[month] > nl_day)
+ break;
+ }
+ *date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9);
+}
+
+/* The following are taken from fs/ntfs/util.c */
+
+#define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000)
+
+/*
+ * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
+ * into Unix UTC (based 1970-01-01, in seconds).
+ */
+static struct timespec
+smb_ntutc2unixutc(u64 ntutc)
+{
+ struct timespec ts;
+ /* FIXME: what about the timezone difference? */
+ /* Subtract the NTFS time offset, then convert to 1s intervals. */
+ u64 t = ntutc - NTFS_TIME_OFFSET;
+ ts.tv_nsec = do_div(t, 10000000) * 100;
+ ts.tv_sec = t;
+ return ts;
+}
+
+/* Convert the Unix UTC into NT time */
+static u64
+smb_unixutc2ntutc(struct timespec ts)
+{
+ /* Note: timezone conversion is probably wrong. */
+ /* return ((u64)utc2local(server, t)) * 10000000 + NTFS_TIME_OFFSET; */
+ return ((u64)ts.tv_sec) * 10000000 + ts.tv_nsec/100 + NTFS_TIME_OFFSET;
+}
+
+#define MAX_FILE_MODE 6
+static mode_t file_mode[] = {
+ S_IFREG, S_IFDIR, S_IFLNK, S_IFCHR, S_IFBLK, S_IFIFO, S_IFSOCK
+};
+
+static int smb_filetype_to_mode(u32 filetype)
+{
+ if (filetype > MAX_FILE_MODE) {
+ PARANOIA("Filetype out of range: %d\n", filetype);
+ return S_IFREG;
+ }
+ return file_mode[filetype];
+}
+
+static u32 smb_filetype_from_mode(int mode)
+{
+ if (S_ISREG(mode))
+ return UNIX_TYPE_FILE;
+ if (S_ISDIR(mode))
+ return UNIX_TYPE_DIR;
+ if (S_ISLNK(mode))
+ return UNIX_TYPE_SYMLINK;
+ if (S_ISCHR(mode))
+ return UNIX_TYPE_CHARDEV;
+ if (S_ISBLK(mode))
+ return UNIX_TYPE_BLKDEV;
+ if (S_ISFIFO(mode))
+ return UNIX_TYPE_FIFO;
+ if (S_ISSOCK(mode))
+ return UNIX_TYPE_SOCKET;
+ return UNIX_TYPE_UNKNOWN;
+}
+
+
+/*****************************************************************************/
+/* */
+/* Support section. */
+/* */
+/*****************************************************************************/
+
+__u32
+smb_len(__u8 * p)
+{
+ return ((*(p+1) & 0x1) << 16L) | (*(p+2) << 8L) | *(p+3);
+}
+
+static __u16
+smb_bcc(__u8 * packet)
+{
+ int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(__u16);
+ return WVAL(packet, pos);
+}
+
+/* smb_valid_packet: We check if packet fulfills the basic
+ requirements of a smb packet */
+
+static int
+smb_valid_packet(__u8 * packet)
+{
+ return (packet[4] == 0xff
+ && packet[5] == 'S'
+ && packet[6] == 'M'
+ && packet[7] == 'B'
+ && (smb_len(packet) + 4 == SMB_HEADER_LEN
+ + SMB_WCT(packet) * 2 + smb_bcc(packet)));
+}
+
+/* smb_verify: We check if we got the answer we expected, and if we
+ got enough data. If bcc == -1, we don't care. */
+
+static int
+smb_verify(__u8 * packet, int command, int wct, int bcc)
+{
+ if (SMB_CMD(packet) != command)
+ goto bad_command;
+ if (SMB_WCT(packet) < wct)
+ goto bad_wct;
+ if (bcc != -1 && smb_bcc(packet) < bcc)
+ goto bad_bcc;
+ return 0;
+
+bad_command:
+ printk(KERN_ERR "smb_verify: command=%x, SMB_CMD=%x??\n",
+ command, SMB_CMD(packet));
+ goto fail;
+bad_wct:
+ printk(KERN_ERR "smb_verify: command=%x, wct=%d, SMB_WCT=%d??\n",
+ command, wct, SMB_WCT(packet));
+ goto fail;
+bad_bcc:
+ printk(KERN_ERR "smb_verify: command=%x, bcc=%d, SMB_BCC=%d??\n",
+ command, bcc, smb_bcc(packet));
+fail:
+ return -EIO;
+}
+
+/*
+ * Returns the maximum read or write size for the "payload". Making all of the
+ * packet fit within the negotiated max_xmit size.
+ *
+ * N.B. Since this value is usually computed before locking the server,
+ * the server's packet size must never be decreased!
+ */
+static inline int
+smb_get_xmitsize(struct smb_sb_info *server, int overhead)
+{
+ return server->opt.max_xmit - overhead;
+}
+
+/*
+ * Calculate the maximum read size
+ */
+int
+smb_get_rsize(struct smb_sb_info *server)
+{
+ /* readX has 12 parameters, read has 5 */
+ int overhead = SMB_HEADER_LEN + 12 * sizeof(__u16) + 2 + 1 + 2;
+ int size = smb_get_xmitsize(server, overhead);
+
+ VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
+
+ return size;
+}
+
+/*
+ * Calculate the maximum write size
+ */
+int
+smb_get_wsize(struct smb_sb_info *server)
+{
+ /* writeX has 14 parameters, write has 5 */
+ int overhead = SMB_HEADER_LEN + 14 * sizeof(__u16) + 2 + 1 + 2;
+ int size = smb_get_xmitsize(server, overhead);
+
+ VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
+
+ return size;
+}
+
+/*
+ * Convert SMB error codes to -E... errno values.
+ */
+int
+smb_errno(struct smb_request *req)
+{
+ int errcls = req->rq_rcls;
+ int error = req->rq_err;
+ char *class = "Unknown";
+
+ VERBOSE("errcls %d code %d from command 0x%x\n",
+ errcls, error, SMB_CMD(req->rq_header));
+
+ if (errcls == ERRDOS) {
+ switch (error) {
+ case ERRbadfunc:
+ return -EINVAL;
+ case ERRbadfile:
+ case ERRbadpath:
+ return -ENOENT;
+ case ERRnofids:
+ return -EMFILE;
+ case ERRnoaccess:
+ return -EACCES;
+ case ERRbadfid:
+ return -EBADF;
+ case ERRbadmcb:
+ return -EREMOTEIO;
+ case ERRnomem:
+ return -ENOMEM;
+ case ERRbadmem:
+ return -EFAULT;
+ case ERRbadenv:
+ case ERRbadformat:
+ return -EREMOTEIO;
+ case ERRbadaccess:
+ return -EACCES;
+ case ERRbaddata:
+ return -E2BIG;
+ case ERRbaddrive:
+ return -ENXIO;
+ case ERRremcd:
+ return -EREMOTEIO;
+ case ERRdiffdevice:
+ return -EXDEV;
+ case ERRnofiles:
+ return -ENOENT;
+ case ERRbadshare:
+ return -ETXTBSY;
+ case ERRlock:
+ return -EDEADLK;
+ case ERRfilexists:
+ return -EEXIST;
+ case ERROR_INVALID_PARAMETER:
+ return -EINVAL;
+ case ERROR_DISK_FULL:
+ return -ENOSPC;
+ case ERROR_INVALID_NAME:
+ return -ENOENT;
+ case ERROR_DIR_NOT_EMPTY:
+ return -ENOTEMPTY;
+ case ERROR_NOT_LOCKED:
+ return -ENOLCK;
+ case ERROR_ALREADY_EXISTS:
+ return -EEXIST;
+ default:
+ class = "ERRDOS";
+ goto err_unknown;
+ }
+ } else if (errcls == ERRSRV) {
+ switch (error) {
+ /* N.B. This is wrong ... EIO ? */
+ case ERRerror:
+ return -ENFILE;
+ case ERRbadpw:
+ return -EINVAL;
+ case ERRbadtype:
+ case ERRtimeout:
+ return -EIO;
+ case ERRaccess:
+ return -EACCES;
+ /*
+ * This is a fatal error, as it means the "tree ID"
+ * for this connection is no longer valid. We map
+ * to a special error code and get a new connection.
+ */
+ case ERRinvnid:
+ return -EBADSLT;
+ default:
+ class = "ERRSRV";
+ goto err_unknown;
+ }
+ } else if (errcls == ERRHRD) {
+ switch (error) {
+ case ERRnowrite:
+ return -EROFS;
+ case ERRbadunit:
+ return -ENODEV;
+ case ERRnotready:
+ return -EUCLEAN;
+ case ERRbadcmd:
+ case ERRdata:
+ return -EIO;
+ case ERRbadreq:
+ return -ERANGE;
+ case ERRbadshare:
+ return -ETXTBSY;
+ case ERRlock:
+ return -EDEADLK;
+ case ERRdiskfull:
+ return -ENOSPC;
+ default:
+ class = "ERRHRD";
+ goto err_unknown;
+ }
+ } else if (errcls == ERRCMD) {
+ class = "ERRCMD";
+ } else if (errcls == SUCCESS) {
+ return 0; /* This is the only valid 0 return */
+ }
+
+err_unknown:
+ printk(KERN_ERR "smb_errno: class %s, code %d from command 0x%x\n",
+ class, error, SMB_CMD(req->rq_header));
+ return -EIO;
+}
+
+/* smb_request_ok: We expect the server to be locked. Then we do the
+ request and check the answer completely. When smb_request_ok
+ returns 0, you can be quite sure that everything went well. When
+ the answer is <=0, the returned number is a valid unix errno. */
+
+static int
+smb_request_ok(struct smb_request *req, int command, int wct, int bcc)
+{
+ int result;
+
+ req->rq_resp_wct = wct;
+ req->rq_resp_bcc = bcc;
+
+ result = smb_add_request(req);
+ if (result != 0) {
+ DEBUG1("smb_request failed\n");
+ goto out;
+ }
+
+ if (smb_valid_packet(req->rq_header) != 0) {
+ PARANOIA("invalid packet!\n");
+ goto out;
+ }
+
+ result = smb_verify(req->rq_header, command, wct, bcc);
+
+out:
+ return result;
+}
+
+/*
+ * This implements the NEWCONN ioctl. It installs the server pid,
+ * sets server->state to CONN_VALID, and wakes up the waiting process.
+ */
+int
+smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
+{
+ struct file *filp;
+ struct sock *sk;
+ int error;
+
+ VERBOSE("fd=%d, pid=%d\n", opt->fd, current->pid);
+
+ smb_lock_server(server);
+
+ /*
+ * Make sure we don't already have a valid connection ...
+ */
+ error = -EINVAL;
+ if (server->state == CONN_VALID)
+ goto out;
+
+ error = -EACCES;
+ if (current->uid != server->mnt->mounted_uid &&
+ !capable(CAP_SYS_ADMIN))
+ goto out;
+
+ error = -EBADF;
+ filp = fget(opt->fd);
+ if (!filp)
+ goto out;
+ if (!smb_valid_socket(filp->f_dentry->d_inode))
+ goto out_putf;
+
+ server->sock_file = filp;
+ server->conn_pid = current->pid;
+ server->opt = *opt;
+ server->generation += 1;
+ server->state = CONN_VALID;
+ error = 0;
+
+ if (server->conn_error) {
+ /*
+ * conn_error is the returncode we originally decided to
+ * drop the old connection on. This message should be positive
+ * and not make people ask questions on why smbfs is printing
+ * error messages ...
+ */
+ printk(KERN_INFO "SMB connection re-established (%d)\n",
+ server->conn_error);
+ server->conn_error = 0;
+ }
+
+ /*
+ * Store the server in sock user_data (Only used by sunrpc)
+ */
+ sk = SOCKET_I(filp->f_dentry->d_inode)->sk;
+ sk->sk_user_data = server;
+
+ /* chain into the data_ready callback */
+ server->data_ready = xchg(&sk->sk_data_ready, smb_data_ready);
+
+ /* check if we have an old smbmount that uses seconds for the
+ serverzone */
+ if (server->opt.serverzone > 12*60 || server->opt.serverzone < -12*60)
+ server->opt.serverzone /= 60;
+
+ /* now that we have an established connection we can detect the server
+ type and enable bug workarounds */
+ if (server->opt.protocol < SMB_PROTOCOL_LANMAN2)
+ install_ops(server->ops, &smb_ops_core);
+ else if (server->opt.protocol == SMB_PROTOCOL_LANMAN2)
+ install_ops(server->ops, &smb_ops_os2);
+ else if (server->opt.protocol == SMB_PROTOCOL_NT1 &&
+ (server->opt.max_xmit < 0x1000) &&
+ !(server->opt.capabilities & SMB_CAP_NT_SMBS)) {
+ /* FIXME: can we kill the WIN95 flag now? */
+ server->mnt->flags |= SMB_MOUNT_WIN95;
+ VERBOSE("detected WIN95 server\n");
+ install_ops(server->ops, &smb_ops_win95);
+ } else {
+ /*
+ * Samba has max_xmit 65535
+ * NT4spX has max_xmit 4536 (or something like that)
+ * win2k has ...
+ */
+ VERBOSE("detected NT1 (Samba, NT4/5) server\n");
+ install_ops(server->ops, &smb_ops_winNT);
+ }
+
+ /* FIXME: the win9x code wants to modify these ... (seek/trunc bug) */
+ if (server->mnt->flags & SMB_MOUNT_OLDATTR) {
+ server->ops->getattr = smb_proc_getattr_core;
+ } else if (server->mnt->flags & SMB_MOUNT_DIRATTR) {
+ server->ops->getattr = smb_proc_getattr_ff;
+ }
+
+ /* Decode server capabilities */
+ if (server->opt.capabilities & SMB_CAP_LARGE_FILES) {
+ /* Should be ok to set this now, as no one can access the
+ mount until the connection has been established. */
+ SB_of(server)->s_maxbytes = ~0ULL >> 1;
+ VERBOSE("LFS enabled\n");
+ }
+ if (server->opt.capabilities & SMB_CAP_UNICODE) {
+ server->mnt->flags |= SMB_MOUNT_UNICODE;
+ VERBOSE("Unicode enabled\n");
+ } else {
+ server->mnt->flags &= ~SMB_MOUNT_UNICODE;
+ }
+#if 0
+ /* flags we may test for other patches ... */
+ if (server->opt.capabilities & SMB_CAP_LARGE_READX) {
+ VERBOSE("Large reads enabled\n");
+ }
+ if (server->opt.capabilities & SMB_CAP_LARGE_WRITEX) {
+ VERBOSE("Large writes enabled\n");
+ }
+#endif
+ if (server->opt.capabilities & SMB_CAP_UNIX) {
+ struct inode *inode;
+ VERBOSE("Using UNIX CIFS extensions\n");
+ install_ops(server->ops, &smb_ops_unix);
+ inode = SB_of(server)->s_root->d_inode;
+ if (inode)
+ inode->i_op = &smb_dir_inode_operations_unix;
+ }
+
+ VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n",
+ server->opt.protocol, server->opt.max_xmit, server->conn_pid,
+ server->opt.capabilities);
+
+ /* FIXME: this really should be done by smbmount. */
+ if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) {
+ server->opt.max_xmit = SMB_MAX_PACKET_SIZE;
+ }
+
+ smb_unlock_server(server);
+ smbiod_wake_up();
+ if (server->opt.capabilities & SMB_CAP_UNIX)
+ smb_proc_query_cifsunix(server);
+
+ server->conn_complete++;
+ wake_up_interruptible_all(&server->conn_wq);
+ return error;
+
+out:
+ smb_unlock_server(server);
+ smbiod_wake_up();
+ return error;
+
+out_putf:
+ fput(filp);
+ goto out;
+}
+
+/* smb_setup_header: We completely set up the packet. You only have to
+ insert the command-specific fields */
+
+__u8 *
+smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc)
+{
+ __u32 xmit_len = SMB_HEADER_LEN + wct * sizeof(__u16) + bcc + 2;
+ __u8 *p = req->rq_header;
+ struct smb_sb_info *server = req->rq_server;
+
+ p = smb_encode_smb_length(p, xmit_len - 4);
+
+ *p++ = 0xff;
+ *p++ = 'S';
+ *p++ = 'M';
+ *p++ = 'B';
+ *p++ = command;
+
+ memset(p, '\0', 19);
+ p += 19;
+ p += 8;
+
+ if (server->opt.protocol > SMB_PROTOCOL_CORE) {
+ int flags = SMB_FLAGS_CASELESS_PATHNAMES;
+ int flags2 = SMB_FLAGS2_LONG_PATH_COMPONENTS |
+ SMB_FLAGS2_EXTENDED_ATTRIBUTES; /* EA? not really ... */
+
+ *(req->rq_header + smb_flg) = flags;
+ if (server->mnt->flags & SMB_MOUNT_UNICODE)
+ flags2 |= SMB_FLAGS2_UNICODE_STRINGS;
+ WSET(req->rq_header, smb_flg2, flags2);
+ }
+ *p++ = wct; /* wct */
+ p += 2 * wct;
+ WSET(p, 0, bcc);
+
+ /* Include the header in the data to send */
+ req->rq_iovlen = 1;
+ req->rq_iov[0].iov_base = req->rq_header;
+ req->rq_iov[0].iov_len = xmit_len - bcc;
+
+ return req->rq_buffer;
+}
+
+static void
+smb_setup_bcc(struct smb_request *req, __u8 *p)
+{
+ u16 bcc = p - req->rq_buffer;
+ u8 *pbcc = req->rq_header + SMB_HEADER_LEN + 2*SMB_WCT(req->rq_header);
+
+ WSET(pbcc, 0, bcc);
+
+ smb_encode_smb_length(req->rq_header, SMB_HEADER_LEN +
+ 2*SMB_WCT(req->rq_header) - 2 + bcc);
+
+ /* Include the "bytes" in the data to send */
+ req->rq_iovlen = 2;
+ req->rq_iov[1].iov_base = req->rq_buffer;
+ req->rq_iov[1].iov_len = bcc;
+}
+
+static int
+smb_proc_seek(struct smb_sb_info *server, __u16 fileid,
+ __u16 mode, off_t offset)
+{
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBlseek, 4, 0);
+ WSET(req->rq_header, smb_vwv0, fileid);
+ WSET(req->rq_header, smb_vwv1, mode);
+ DSET(req->rq_header, smb_vwv2, offset);
+ req->rq_flags |= SMB_REQ_NORETRY;
+
+ result = smb_request_ok(req, SMBlseek, 2, 0);
+ if (result < 0) {
+ result = 0;
+ goto out_free;
+ }
+
+ result = DVAL(req->rq_header, smb_vwv0);
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_open(struct smb_sb_info *server, struct dentry *dentry, int wish)
+{
+ struct inode *ino = dentry->d_inode;
+ struct smb_inode_info *ei = SMB_I(ino);
+ int mode, read_write = 0x42, read_only = 0x40;
+ int res;
+ char *p;
+ struct smb_request *req;
+
+ /*
+ * Attempt to open r/w, unless there are no write privileges.
+ */
+ mode = read_write;
+ if (!(ino->i_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
+ mode = read_only;
+#if 0
+ /* FIXME: why is this code not in? below we fix it so that a caller
+ wanting RO doesn't get RW. smb_revalidate_inode does some
+ optimization based on access mode. tail -f needs it to be correct.
+
+ We must open rw since we don't do the open if called a second time
+ with different 'wish'. Is that not supported by smb servers? */
+ if (!(wish & (O_WRONLY | O_RDWR)))
+ mode = read_only;
+#endif
+
+ res = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ retry:
+ p = smb_setup_header(req, SMBopen, 2, 0);
+ WSET(req->rq_header, smb_vwv0, mode);
+ WSET(req->rq_header, smb_vwv1, aSYSTEM | aHIDDEN | aDIR);
+ res = smb_simple_encode_path(req, &p, dentry, NULL);
+ if (res < 0)
+ goto out_free;
+ smb_setup_bcc(req, p);
+
+ res = smb_request_ok(req, SMBopen, 7, 0);
+ if (res != 0) {
+ if (mode == read_write &&
+ (res == -EACCES || res == -ETXTBSY || res == -EROFS))
+ {
+ VERBOSE("%s/%s R/W failed, error=%d, retrying R/O\n",
+ DENTRY_PATH(dentry), res);
+ mode = read_only;
+ req->rq_flags = 0;
+ goto retry;
+ }
+ goto out_free;
+ }
+ /* We should now have data in vwv[0..6]. */
+
+ ei->fileid = WVAL(req->rq_header, smb_vwv0);
+ ei->attr = WVAL(req->rq_header, smb_vwv1);
+ /* smb_vwv2 has mtime */
+ /* smb_vwv4 has size */
+ ei->access = (WVAL(req->rq_header, smb_vwv6) & SMB_ACCMASK);
+ ei->open = server->generation;
+
+out_free:
+ smb_rput(req);
+out:
+ return res;
+}
+
+/*
+ * Make sure the file is open, and check that the access
+ * is compatible with the desired access.
+ */
+int
+smb_open(struct dentry *dentry, int wish)
+{
+ struct inode *inode = dentry->d_inode;
+ int result;
+ __u16 access;
+
+ result = -ENOENT;
+ if (!inode) {
+ printk(KERN_ERR "smb_open: no inode for dentry %s/%s\n",
+ DENTRY_PATH(dentry));
+ goto out;
+ }
+
+ if (!smb_is_open(inode)) {
+ struct smb_sb_info *server = server_from_inode(inode);
+ result = 0;
+ if (!smb_is_open(inode))
+ result = smb_proc_open(server, dentry, wish);
+ if (result)
+ goto out;
+ /*
+ * A successful open means the path is still valid ...
+ */
+ smb_renew_times(dentry);
+ }
+
+ /*
+ * Check whether the access is compatible with the desired mode.
+ */
+ result = 0;
+ access = SMB_I(inode)->access;
+ if (access != wish && access != SMB_O_RDWR) {
+ PARANOIA("%s/%s access denied, access=%x, wish=%x\n",
+ DENTRY_PATH(dentry), access, wish);
+ result = -EACCES;
+ }
+out:
+ return result;
+}
+
+static int
+smb_proc_close(struct smb_sb_info *server, __u16 fileid, __u32 mtime)
+{
+ struct smb_request *req;
+ int result = -ENOMEM;
+
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBclose, 3, 0);
+ WSET(req->rq_header, smb_vwv0, fileid);
+ DSET(req->rq_header, smb_vwv1, utc2local(server, mtime));
+ req->rq_flags |= SMB_REQ_NORETRY;
+ result = smb_request_ok(req, SMBclose, 0, 0);
+
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * Win NT 4.0 has an apparent bug in that it fails to update the
+ * modify time when writing to a file. As a workaround, we update
+ * both modify and access time locally, and post the times to the
+ * server when closing the file.
+ */
+static int
+smb_proc_close_inode(struct smb_sb_info *server, struct inode * ino)
+{
+ struct smb_inode_info *ei = SMB_I(ino);
+ int result = 0;
+ if (smb_is_open(ino))
+ {
+ /*
+ * We clear the open flag in advance, in case another
+ * process observes the value while we block below.
+ */
+ ei->open = 0;
+
+ /*
+ * Kludge alert: SMB timestamps are accurate only to
+ * two seconds ... round the times to avoid needless
+ * cache invalidations!
+ */
+ if (ino->i_mtime.tv_sec & 1) {
+ ino->i_mtime.tv_sec--;
+ ino->i_mtime.tv_nsec = 0;
+ }
+ if (ino->i_atime.tv_sec & 1) {
+ ino->i_atime.tv_sec--;
+ ino->i_atime.tv_nsec = 0;
+ }
+ /*
+ * If the file is open with write permissions,
+ * update the time stamps to sync mtime and atime.
+ */
+ if ((server->opt.capabilities & SMB_CAP_UNIX) == 0 &&
+ (server->opt.protocol >= SMB_PROTOCOL_LANMAN2) &&
+ !(ei->access == SMB_O_RDONLY))
+ {
+ struct smb_fattr fattr;
+ smb_get_inode_attr(ino, &fattr);
+ smb_proc_setattr_ext(server, ino, &fattr);
+ }
+
+ result = smb_proc_close(server, ei->fileid, ino->i_mtime.tv_sec);
+ /*
+ * Force a revalidation after closing ... some servers
+ * don't post the size until the file has been closed.
+ */
+ if (server->opt.protocol < SMB_PROTOCOL_NT1)
+ ei->oldmtime = 0;
+ ei->closed = jiffies;
+ }
+ return result;
+}
+
+int
+smb_close(struct inode *ino)
+{
+ int result = 0;
+
+ if (smb_is_open(ino)) {
+ struct smb_sb_info *server = server_from_inode(ino);
+ result = smb_proc_close_inode(server, ino);
+ }
+ return result;
+}
+
+/*
+ * This is used to close a file following a failed instantiate.
+ * Since we don't have an inode, we can't use any of the above.
+ */
+int
+smb_close_fileid(struct dentry *dentry, __u16 fileid)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ int result;
+
+ result = smb_proc_close(server, fileid, get_seconds());
+ return result;
+}
+
+/* In smb_proc_read and smb_proc_write we do not retry, because the
+ file-id would not be valid after a reconnection. */
+
+static void
+smb_proc_read_data(struct smb_request *req)
+{
+ req->rq_iov[0].iov_base = req->rq_buffer;
+ req->rq_iov[0].iov_len = 3;
+
+ req->rq_iov[1].iov_base = req->rq_page;
+ req->rq_iov[1].iov_len = req->rq_rsize;
+ req->rq_iovlen = 2;
+
+ req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
+}
+
+static int
+smb_proc_read(struct inode *inode, loff_t offset, int count, char *data)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ __u16 returned_count, data_len;
+ unsigned char *buf;
+ int result;
+ struct smb_request *req;
+ u8 rbuf[4];
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBread, 5, 0);
+ buf = req->rq_header;
+ WSET(buf, smb_vwv0, SMB_I(inode)->fileid);
+ WSET(buf, smb_vwv1, count);
+ DSET(buf, smb_vwv2, offset);
+ WSET(buf, smb_vwv4, 0);
+
+ req->rq_page = data;
+ req->rq_rsize = count;
+ req->rq_callback = smb_proc_read_data;
+ req->rq_buffer = rbuf;
+ req->rq_flags |= SMB_REQ_NORETRY | SMB_REQ_STATIC;
+
+ result = smb_request_ok(req, SMBread, 5, -1);
+ if (result < 0)
+ goto out_free;
+ returned_count = WVAL(req->rq_header, smb_vwv0);
+
+ data_len = WVAL(rbuf, 1);
+
+ if (returned_count != data_len) {
+ printk(KERN_NOTICE "smb_proc_read: returned != data_len\n");
+ printk(KERN_NOTICE "smb_proc_read: ret_c=%d, data_len=%d\n",
+ returned_count, data_len);
+ }
+ result = data_len;
+
+out_free:
+ smb_rput(req);
+out:
+ VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
+ inode->i_ino, SMB_I(inode)->fileid, count, result);
+ return result;
+}
+
+static int
+smb_proc_write(struct inode *inode, loff_t offset, int count, const char *data)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ int result;
+ u16 fileid = SMB_I(inode)->fileid;
+ u8 buf[4];
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
+ inode->i_ino, fileid, count, offset);
+
+ smb_setup_header(req, SMBwrite, 5, count + 3);
+ WSET(req->rq_header, smb_vwv0, fileid);
+ WSET(req->rq_header, smb_vwv1, count);
+ DSET(req->rq_header, smb_vwv2, offset);
+ WSET(req->rq_header, smb_vwv4, 0);
+
+ buf[0] = 1;
+ WSET(buf, 1, count); /* yes, again ... */
+ req->rq_iov[1].iov_base = buf;
+ req->rq_iov[1].iov_len = 3;
+ req->rq_iov[2].iov_base = (char *) data;
+ req->rq_iov[2].iov_len = count;
+ req->rq_iovlen = 3;
+ req->rq_flags |= SMB_REQ_NORETRY;
+
+ result = smb_request_ok(req, SMBwrite, 1, 0);
+ if (result >= 0)
+ result = WVAL(req->rq_header, smb_vwv0);
+
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * In smb_proc_readX and smb_proc_writeX we do not retry, because the
+ * file-id would not be valid after a reconnection.
+ */
+
+#define SMB_READX_MAX_PAD 64
+static void
+smb_proc_readX_data(struct smb_request *req)
+{
+ /* header length, excluding the netbios length (-4) */
+ int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2;
+ int data_off = WVAL(req->rq_header, smb_vwv6);
+
+ /*
+ * Some genius made the padding to the data bytes arbitrary.
+ * So we must first calculate the amount of padding used by the server.
+ */
+ data_off -= hdrlen;
+ if (data_off > SMB_READX_MAX_PAD || data_off < 0) {
+ PARANOIA("offset is larger than SMB_READX_MAX_PAD or negative!\n");
+ PARANOIA("%d > %d || %d < 0\n", data_off, SMB_READX_MAX_PAD, data_off);
+ req->rq_rlen = req->rq_bufsize + 1;
+ return;
+ }
+ req->rq_iov[0].iov_base = req->rq_buffer;
+ req->rq_iov[0].iov_len = data_off;
+
+ req->rq_iov[1].iov_base = req->rq_page;
+ req->rq_iov[1].iov_len = req->rq_rsize;
+ req->rq_iovlen = 2;
+
+ req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
+}
+
+static int
+smb_proc_readX(struct inode *inode, loff_t offset, int count, char *data)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ unsigned char *buf;
+ int result;
+ struct smb_request *req;
+ static char pad[SMB_READX_MAX_PAD];
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBreadX, 12, 0);
+ buf = req->rq_header;
+ WSET(buf, smb_vwv0, 0x00ff);
+ WSET(buf, smb_vwv1, 0);
+ WSET(buf, smb_vwv2, SMB_I(inode)->fileid);
+ DSET(buf, smb_vwv3, (u32)offset); /* low 32 bits */
+ WSET(buf, smb_vwv5, count);
+ WSET(buf, smb_vwv6, 0);
+ DSET(buf, smb_vwv7, 0);
+ WSET(buf, smb_vwv9, 0);
+ DSET(buf, smb_vwv10, (u32)(offset >> 32)); /* high 32 bits */
+ WSET(buf, smb_vwv11, 0);
+
+ req->rq_page = data;
+ req->rq_rsize = count;
+ req->rq_callback = smb_proc_readX_data;
+ req->rq_buffer = pad;
+ req->rq_bufsize = SMB_READX_MAX_PAD;
+ req->rq_flags |= SMB_REQ_STATIC | SMB_REQ_NORETRY;
+
+ result = smb_request_ok(req, SMBreadX, 12, -1);
+ if (result < 0)
+ goto out_free;
+ result = WVAL(req->rq_header, smb_vwv5);
+
+out_free:
+ smb_rput(req);
+out:
+ VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
+ inode->i_ino, SMB_I(inode)->fileid, count, result);
+ return result;
+}
+
+static int
+smb_proc_writeX(struct inode *inode, loff_t offset, int count, const char *data)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ int result;
+ u8 *p;
+ static u8 pad[4];
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
+ inode->i_ino, SMB_I(inode)->fileid, count, offset);
+
+ p = smb_setup_header(req, SMBwriteX, 14, count + 1);
+ WSET(req->rq_header, smb_vwv0, 0x00ff);
+ WSET(req->rq_header, smb_vwv1, 0);
+ WSET(req->rq_header, smb_vwv2, SMB_I(inode)->fileid);
+ DSET(req->rq_header, smb_vwv3, (u32)offset); /* low 32 bits */
+ DSET(req->rq_header, smb_vwv5, 0);
+ WSET(req->rq_header, smb_vwv7, 0); /* write mode */
+ WSET(req->rq_header, smb_vwv8, 0);
+ WSET(req->rq_header, smb_vwv9, 0);
+ WSET(req->rq_header, smb_vwv10, count); /* data length */
+ WSET(req->rq_header, smb_vwv11, smb_vwv12 + 2 + 1);
+ DSET(req->rq_header, smb_vwv12, (u32)(offset >> 32));
+
+ req->rq_iov[1].iov_base = pad;
+ req->rq_iov[1].iov_len = 1;
+ req->rq_iov[2].iov_base = (char *) data;
+ req->rq_iov[2].iov_len = count;
+ req->rq_iovlen = 3;
+ req->rq_flags |= SMB_REQ_NORETRY;
+
+ result = smb_request_ok(req, SMBwriteX, 6, 0);
+ if (result >= 0)
+ result = WVAL(req->rq_header, smb_vwv2);
+
+ smb_rput(req);
+out:
+ return result;
+}
+
+int
+smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ char *p;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ p = smb_setup_header(req, SMBcreate, 3, 0);
+ WSET(req->rq_header, smb_vwv0, attr);
+ DSET(req->rq_header, smb_vwv1, utc2local(server, ctime));
+ result = smb_simple_encode_path(req, &p, dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ smb_setup_bcc(req, p);
+
+ result = smb_request_ok(req, SMBcreate, 1, 0);
+ if (result < 0)
+ goto out_free;
+
+ *fileid = WVAL(req->rq_header, smb_vwv0);
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+int
+smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry)
+{
+ struct smb_sb_info *server = server_from_dentry(old_dentry);
+ char *p;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ p = smb_setup_header(req, SMBmv, 1, 0);
+ WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN | aDIR);
+ result = smb_simple_encode_path(req, &p, old_dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ result = smb_simple_encode_path(req, &p, new_dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ smb_setup_bcc(req, p);
+
+ if ((result = smb_request_ok(req, SMBmv, 0, 0)) < 0)
+ goto out_free;
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * Code common to mkdir and rmdir.
+ */
+static int
+smb_proc_generic_command(struct dentry *dentry, __u8 command)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ char *p;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ p = smb_setup_header(req, command, 0, 0);
+ result = smb_simple_encode_path(req, &p, dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ smb_setup_bcc(req, p);
+
+ result = smb_request_ok(req, command, 0, 0);
+ if (result < 0)
+ goto out_free;
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+int
+smb_proc_mkdir(struct dentry *dentry)
+{
+ return smb_proc_generic_command(dentry, SMBmkdir);
+}
+
+int
+smb_proc_rmdir(struct dentry *dentry)
+{
+ return smb_proc_generic_command(dentry, SMBrmdir);
+}
+
+#if SMBFS_POSIX_UNLINK
+/*
+ * Removes readonly attribute from a file. Used by unlink to give posix
+ * semantics.
+ */
+static int
+smb_set_rw(struct dentry *dentry,struct smb_sb_info *server)
+{
+ int result;
+ struct smb_fattr fattr;
+
+ /* FIXME: cifsUE should allow removing a readonly file. */
+
+ /* first get current attribute */
+ smb_init_dirent(server, &fattr);
+ result = server->ops->getattr(server, dentry, &fattr);
+ smb_finish_dirent(server, &fattr);
+ if (result < 0)
+ return result;
+
+ /* if RONLY attribute is set, remove it */
+ if (fattr.attr & aRONLY) { /* read only attribute is set */
+ fattr.attr &= ~aRONLY;
+ result = smb_proc_setattr_core(server, dentry, fattr.attr);
+ }
+ return result;
+}
+#endif
+
+int
+smb_proc_unlink(struct dentry *dentry)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ int flag = 0;
+ char *p;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ retry:
+ p = smb_setup_header(req, SMBunlink, 1, 0);
+ WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN);
+ result = smb_simple_encode_path(req, &p, dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ smb_setup_bcc(req, p);
+
+ if ((result = smb_request_ok(req, SMBunlink, 0, 0)) < 0) {
+#if SMBFS_POSIX_UNLINK
+ if (result == -EACCES && !flag) {
+ /* Posix semantics is for the read-only state
+ of a file to be ignored in unlink(). In the
+ SMB world a unlink() is refused on a
+ read-only file. To make things easier for
+ unix users we try to override the files
+ permission if the unlink fails with the
+ right error.
+ This introduces a race condition that could
+ lead to a file being written by someone who
+ shouldn't have access, but as far as I can
+ tell that is unavoidable */
+
+ /* remove RONLY attribute and try again */
+ result = smb_set_rw(dentry,server);
+ if (result == 0) {
+ flag = 1;
+ req->rq_flags = 0;
+ goto retry;
+ }
+ }
+#endif
+ goto out_free;
+ }
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+int
+smb_proc_flush(struct smb_sb_info *server, __u16 fileid)
+{
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBflush, 1, 0);
+ WSET(req->rq_header, smb_vwv0, fileid);
+ req->rq_flags |= SMB_REQ_NORETRY;
+ result = smb_request_ok(req, SMBflush, 0, 0);
+
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_trunc32(struct inode *inode, loff_t length)
+{
+ /*
+ * Writing 0bytes is old-SMB magic for truncating files.
+ * MAX_NON_LFS should prevent this from being called with a too
+ * large offset.
+ */
+ return smb_proc_write(inode, length, 0, NULL);
+}
+
+static int
+smb_proc_trunc64(struct inode *inode, loff_t length)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ int result;
+ char *param;
+ char *data;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 14)))
+ goto out;
+
+ param = req->rq_buffer;
+ data = req->rq_buffer + 6;
+
+ /* FIXME: must we also set allocation size? winNT seems to do that */
+ WSET(param, 0, SMB_I(inode)->fileid);
+ WSET(param, 2, SMB_SET_FILE_END_OF_FILE_INFO);
+ WSET(param, 4, 0);
+ LSET(data, 0, length);
+
+ req->rq_trans2_command = TRANSACT2_SETFILEINFO;
+ req->rq_ldata = 8;
+ req->rq_data = data;
+ req->rq_lparm = 6;
+ req->rq_parm = param;
+ req->rq_flags |= SMB_REQ_NORETRY;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+
+ result = 0;
+ if (req->rq_rcls != 0)
+ result = smb_errno(req);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_trunc95(struct inode *inode, loff_t length)
+{
+ struct smb_sb_info *server = server_from_inode(inode);
+ int result = smb_proc_trunc32(inode, length);
+
+ /*
+ * win9x doesn't appear to update the size immediately.
+ * It will return the old file size after the truncate,
+ * confusing smbfs. So we force an update.
+ *
+ * FIXME: is this still necessary?
+ */
+ smb_proc_flush(server, SMB_I(inode)->fileid);
+ return result;
+}
+
+static void
+smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
+{
+ memset(fattr, 0, sizeof(*fattr));
+
+ fattr->f_nlink = 1;
+ fattr->f_uid = server->mnt->uid;
+ fattr->f_gid = server->mnt->gid;
+ fattr->f_blksize = SMB_ST_BLKSIZE;
+ fattr->f_unix = 0;
+}
+
+static void
+smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
+{
+ if (fattr->f_unix)
+ return;
+
+ fattr->f_mode = server->mnt->file_mode;
+ if (fattr->attr & aDIR) {
+ fattr->f_mode = server->mnt->dir_mode;
+ fattr->f_size = SMB_ST_BLKSIZE;
+ }
+ /* Check the read-only flag */
+ if (fattr->attr & aRONLY)
+ fattr->f_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
+
+ /* How many 512 byte blocks do we need for this file? */
+ fattr->f_blocks = 0;
+ if (fattr->f_size != 0)
+ fattr->f_blocks = 1 + ((fattr->f_size-1) >> 9);
+ return;
+}
+
+void
+smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr,
+ struct super_block *sb)
+{
+ smb_init_dirent(server, fattr);
+ fattr->attr = aDIR;
+ fattr->f_ino = 2; /* traditional root inode number */
+ fattr->f_mtime = current_fs_time(sb);
+ smb_finish_dirent(server, fattr);
+}
+
+/*
+ * Decode a dirent for old protocols
+ *
+ * qname is filled with the decoded, and possibly translated, name.
+ * fattr receives decoded attributes
+ *
+ * Bugs Noted:
+ * (1) Pathworks servers may pad the name with extra spaces.
+ */
+static char *
+smb_decode_short_dirent(struct smb_sb_info *server, char *p,
+ struct qstr *qname, struct smb_fattr *fattr,
+ unsigned char *name_buf)
+{
+ int len;
+
+ /*
+ * SMB doesn't have a concept of inode numbers ...
+ */
+ smb_init_dirent(server, fattr);
+ fattr->f_ino = 0; /* FIXME: do we need this? */
+
+ p += SMB_STATUS_SIZE; /* reserved (search_status) */
+ fattr->attr = *p;
+ fattr->f_mtime.tv_sec = date_dos2unix(server, WVAL(p, 3), WVAL(p, 1));
+ fattr->f_mtime.tv_nsec = 0;
+ fattr->f_size = DVAL(p, 5);
+ fattr->f_ctime = fattr->f_mtime;
+ fattr->f_atime = fattr->f_mtime;
+ qname->name = p + 9;
+ len = strnlen(qname->name, 12);
+
+ /*
+ * Trim trailing blanks for Pathworks servers
+ */
+ while (len > 2 && qname->name[len-1] == ' ')
+ len--;
+
+ smb_finish_dirent(server, fattr);
+
+#if 0
+ /* FIXME: These only work for ascii chars, and recent smbmount doesn't
+ allow the flag to be set anyway. It kills const. Remove? */
+ switch (server->opt.case_handling) {
+ case SMB_CASE_UPPER:
+ str_upper(entry->name, len);
+ break;
+ case SMB_CASE_LOWER:
+ str_lower(entry->name, len);
+ break;
+ default:
+ break;
+ }
+#endif
+
+ qname->len = 0;
+ len = server->ops->convert(name_buf, SMB_MAXNAMELEN,
+ qname->name, len,
+ server->remote_nls, server->local_nls);
+ if (len > 0) {
+ qname->len = len;
+ qname->name = name_buf;
+ DEBUG1("len=%d, name=%.*s\n",qname->len,qname->len,qname->name);
+ }
+
+ return p + 22;
+}
+
+/*
+ * This routine is used to read in directory entries from the network.
+ * Note that it is for short directory name seeks, i.e.: protocol <
+ * SMB_PROTOCOL_LANMAN2
+ */
+static int
+smb_proc_readdir_short(struct file *filp, void *dirent, filldir_t filldir,
+ struct smb_cache_control *ctl)
+{
+ struct dentry *dir = filp->f_dentry;
+ struct smb_sb_info *server = server_from_dentry(dir);
+ struct qstr qname;
+ struct smb_fattr fattr;
+ char *p;
+ int result;
+ int i, first, entries_seen, entries;
+ int entries_asked = (server->opt.max_xmit - 100) / SMB_DIRINFO_SIZE;
+ __u16 bcc;
+ __u16 count;
+ char status[SMB_STATUS_SIZE];
+ static struct qstr mask = {
+ .name = "*.*",
+ .len = 3,
+ };
+ unsigned char *last_status;
+ struct smb_request *req;
+ unsigned char *name_buf;
+
+ VERBOSE("%s/%s\n", DENTRY_PATH(dir));
+
+ lock_kernel();
+
+ result = -ENOMEM;
+ if (! (name_buf = kmalloc(SMB_MAXNAMELEN, GFP_KERNEL)))
+ goto out;
+
+ first = 1;
+ entries = 0;
+ entries_seen = 2; /* implicit . and .. */
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
+ goto out_name;
+
+ while (1) {
+ p = smb_setup_header(req, SMBsearch, 2, 0);
+ WSET(req->rq_header, smb_vwv0, entries_asked);
+ WSET(req->rq_header, smb_vwv1, aDIR);
+ if (first == 1) {
+ result = smb_simple_encode_path(req, &p, dir, &mask);
+ if (result < 0)
+ goto out_free;
+ if (p + 3 > (char *)req->rq_buffer + req->rq_bufsize) {
+ result = -ENAMETOOLONG;
+ goto out_free;
+ }
+ *p++ = 5;
+ WSET(p, 0, 0);
+ p += 2;
+ first = 0;
+ } else {
+ if (p + 5 + SMB_STATUS_SIZE >
+ (char *)req->rq_buffer + req->rq_bufsize) {
+ result = -ENAMETOOLONG;
+ goto out_free;
+ }
+
+ *p++ = 4;
+ *p++ = 0;
+ *p++ = 5;
+ WSET(p, 0, SMB_STATUS_SIZE);
+ p += 2;
+ memcpy(p, status, SMB_STATUS_SIZE);
+ p += SMB_STATUS_SIZE;
+ }
+
+ smb_setup_bcc(req, p);
+
+ result = smb_request_ok(req, SMBsearch, 1, -1);
+ if (result < 0) {
+ if ((req->rq_rcls == ERRDOS) &&
+ (req->rq_err == ERRnofiles))
+ break;
+ goto out_free;
+ }
+ count = WVAL(req->rq_header, smb_vwv0);
+ if (count <= 0)
+ break;
+
+ result = -EIO;
+ bcc = smb_bcc(req->rq_header);
+ if (bcc != count * SMB_DIRINFO_SIZE + 3)
+ goto out_free;
+ p = req->rq_buffer + 3;
+
+
+ /* Make sure the response fits in the buffer. Fixed sized
+ entries means we don't have to check in the decode loop. */
+
+ last_status = req->rq_buffer + 3 + (count-1) * SMB_DIRINFO_SIZE;
+
+ if (last_status + SMB_DIRINFO_SIZE >=
+ req->rq_buffer + req->rq_bufsize) {
+ printk(KERN_ERR "smb_proc_readdir_short: "
+ "last dir entry outside buffer! "
+ "%d@%p %d@%p\n", SMB_DIRINFO_SIZE, last_status,
+ req->rq_bufsize, req->rq_buffer);
+ goto out_free;
+ }
+
+ /* Read the last entry into the status field. */
+ memcpy(status, last_status, SMB_STATUS_SIZE);
+
+
+ /* Now we are ready to parse smb directory entries. */
+
+ for (i = 0; i < count; i++) {
+ p = smb_decode_short_dirent(server, p,
+ &qname, &fattr, name_buf);
+ if (qname.len == 0)
+ continue;
+
+ if (entries_seen == 2 && qname.name[0] == '.') {
+ if (qname.len == 1)
+ continue;
+ if (qname.name[1] == '.' && qname.len == 2)
+ continue;
+ }
+ if (!smb_fill_cache(filp, dirent, filldir, ctl,
+ &qname, &fattr))
+ ; /* stop reading? */
+ entries_seen++;
+ }
+ }
+ result = entries;
+
+out_free:
+ smb_rput(req);
+out_name:
+ kfree(name_buf);
+out:
+ unlock_kernel();
+ return result;
+}
+
+static void smb_decode_unix_basic(struct smb_fattr *fattr, struct smb_sb_info *server, char *p)
+{
+ u64 size, disk_bytes;
+
+ /* FIXME: verify nls support. all is sent as utf8? */
+
+ fattr->f_unix = 1;
+ fattr->f_mode = 0;
+
+ /* FIXME: use the uniqueID from the remote instead? */
+ /* 0 L file size in bytes */
+ /* 8 L file size on disk in bytes (block count) */
+ /* 40 L uid */
+ /* 48 L gid */
+ /* 56 W file type */
+ /* 60 L devmajor */
+ /* 68 L devminor */
+ /* 76 L unique ID (inode) */
+ /* 84 L permissions */
+ /* 92 L link count */
+
+ size = LVAL(p, 0);
+ disk_bytes = LVAL(p, 8);
+
+ /*
+ * Some samba versions round up on-disk byte usage
+ * to 1MB boundaries, making it useless. When seeing
+ * that, use the size instead.
+ */
+ if (!(disk_bytes & 0xfffff))
+ disk_bytes = size+511;
+
+ fattr->f_size = size;
+ fattr->f_blocks = disk_bytes >> 9;
+ fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 16));
+ fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 24));
+ fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 32));
+
+ if (server->mnt->flags & SMB_MOUNT_UID)
+ fattr->f_uid = server->mnt->uid;
+ else
+ fattr->f_uid = LVAL(p, 40);
+
+ if (server->mnt->flags & SMB_MOUNT_GID)
+ fattr->f_gid = server->mnt->gid;
+ else
+ fattr->f_gid = LVAL(p, 48);
+
+ fattr->f_mode |= smb_filetype_to_mode(WVAL(p, 56));
+
+ if (S_ISBLK(fattr->f_mode) || S_ISCHR(fattr->f_mode)) {
+ __u64 major = LVAL(p, 60);
+ __u64 minor = LVAL(p, 68);
+
+ fattr->f_rdev = MKDEV(major & 0xffffffff, minor & 0xffffffff);
+ if (MAJOR(fattr->f_rdev) != (major & 0xffffffff) ||
+ MINOR(fattr->f_rdev) != (minor & 0xffffffff))
+ fattr->f_rdev = 0;
+ }
+
+ fattr->f_mode |= LVAL(p, 84);
+
+ if ( (server->mnt->flags & SMB_MOUNT_DMODE) &&
+ (S_ISDIR(fattr->f_mode)) )
+ fattr->f_mode = (server->mnt->dir_mode & S_IRWXUGO) | S_IFDIR;
+ else if ( (server->mnt->flags & SMB_MOUNT_FMODE) &&
+ !(S_ISDIR(fattr->f_mode)) )
+ fattr->f_mode = (server->mnt->file_mode & S_IRWXUGO) |
+ (fattr->f_mode & S_IFMT);
+
+}
+
+/*
+ * Interpret a long filename structure using the specified info level:
+ * level 1 for anything below NT1 protocol
+ * level 260 for NT1 protocol
+ *
+ * qname is filled with the decoded, and possibly translated, name
+ * fattr receives decoded attributes.
+ *
+ * Bugs Noted:
+ * (1) Win NT 4.0 appends a null byte to names and counts it in the length!
+ */
+static char *
+smb_decode_long_dirent(struct smb_sb_info *server, char *p, int level,
+ struct qstr *qname, struct smb_fattr *fattr,
+ unsigned char *name_buf)
+{
+ char *result;
+ unsigned int len = 0;
+ int n;
+ __u16 date, time;
+ int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
+
+ /*
+ * SMB doesn't have a concept of inode numbers ...
+ */
+ smb_init_dirent(server, fattr);
+ fattr->f_ino = 0; /* FIXME: do we need this? */
+
+ switch (level) {
+ case 1:
+ len = *((unsigned char *) p + 22);
+ qname->name = p + 23;
+ result = p + 24 + len;
+
+ date = WVAL(p, 0);
+ time = WVAL(p, 2);
+ fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
+ fattr->f_ctime.tv_nsec = 0;
+
+ date = WVAL(p, 4);
+ time = WVAL(p, 6);
+ fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
+ fattr->f_atime.tv_nsec = 0;
+
+ date = WVAL(p, 8);
+ time = WVAL(p, 10);
+ fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
+ fattr->f_mtime.tv_nsec = 0;
+ fattr->f_size = DVAL(p, 12);
+ /* ULONG allocation size */
+ fattr->attr = WVAL(p, 20);
+
+ VERBOSE("info 1 at %p, len=%d, name=%.*s\n",
+ p, len, len, qname->name);
+ break;
+ case 260:
+ result = p + WVAL(p, 0);
+ len = DVAL(p, 60);
+ if (len > 255) len = 255;
+ /* NT4 null terminates, unless we are using unicode ... */
+ qname->name = p + 94;
+ if (!unicode && len && qname->name[len-1] == '\0')
+ len--;
+
+ fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 8));
+ fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 16));
+ fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 24));
+ /* change time (32) */
+ fattr->f_size = LVAL(p, 40);
+ /* alloc size (48) */
+ fattr->attr = DVAL(p, 56);
+
+ VERBOSE("info 260 at %p, len=%d, name=%.*s\n",
+ p, len, len, qname->name);
+ break;
+ case SMB_FIND_FILE_UNIX:
+ result = p + WVAL(p, 0);
+ qname->name = p + 108;
+
+ len = strlen(qname->name);
+ /* FIXME: should we check the length?? */
+
+ p += 8;
+ smb_decode_unix_basic(fattr, server, p);
+ VERBOSE("info SMB_FIND_FILE_UNIX at %p, len=%d, name=%.*s\n",
+ p, len, len, qname->name);
+ break;
+ default:
+ PARANOIA("Unknown info level %d\n", level);
+ result = p + WVAL(p, 0);
+ goto out;
+ }
+
+ smb_finish_dirent(server, fattr);
+
+#if 0
+ /* FIXME: These only work for ascii chars, and recent smbmount doesn't
+ allow the flag to be set anyway. Remove? */
+ switch (server->opt.case_handling) {
+ case SMB_CASE_UPPER:
+ str_upper(qname->name, len);
+ break;
+ case SMB_CASE_LOWER:
+ str_lower(qname->name, len);
+ break;
+ default:
+ break;
+ }
+#endif
+
+ qname->len = 0;
+ n = server->ops->convert(name_buf, SMB_MAXNAMELEN,
+ qname->name, len,
+ server->remote_nls, server->local_nls);
+ if (n > 0) {
+ qname->len = n;
+ qname->name = name_buf;
+ }
+
+out:
+ return result;
+}
+
+/* findfirst/findnext flags */
+#define SMB_CLOSE_AFTER_FIRST (1<<0)
+#define SMB_CLOSE_IF_END (1<<1)
+#define SMB_REQUIRE_RESUME_KEY (1<<2)
+#define SMB_CONTINUE_BIT (1<<3)
+
+/*
+ * Note: samba-2.0.7 (at least) has a very similar routine, cli_list, in
+ * source/libsmb/clilist.c. When looking for smb bugs in the readdir code,
+ * go there for advise.
+ *
+ * Bugs Noted:
+ * (1) When using Info Level 1 Win NT 4.0 truncates directory listings
+ * for certain patterns of names and/or lengths. The breakage pattern
+ * is completely reproducible and can be toggled by the creation of a
+ * single file. (E.g. echo hi >foo breaks, rm -f foo works.)
+ */
+static int
+smb_proc_readdir_long(struct file *filp, void *dirent, filldir_t filldir,
+ struct smb_cache_control *ctl)
+{
+ struct dentry *dir = filp->f_dentry;
+ struct smb_sb_info *server = server_from_dentry(dir);
+ struct qstr qname;
+ struct smb_fattr fattr;
+
+ unsigned char *p, *lastname;
+ char *mask, *param;
+ __u16 command;
+ int first, entries_seen;
+
+ /* Both NT and OS/2 accept info level 1 (but see note below). */
+ int info_level = 260;
+ const int max_matches = 512;
+
+ unsigned int ff_searchcount = 0;
+ unsigned int ff_eos = 0;
+ unsigned int ff_lastname = 0;
+ unsigned int ff_dir_handle = 0;
+ unsigned int loop_count = 0;
+ unsigned int mask_len, i;
+ int result;
+ struct smb_request *req;
+ unsigned char *name_buf;
+ static struct qstr star = {
+ .name = "*",
+ .len = 1,
+ };
+
+ lock_kernel();
+
+ /*
+ * We always prefer unix style. Use info level 1 for older
+ * servers that don't do 260.
+ */
+ if (server->opt.capabilities & SMB_CAP_UNIX)
+ info_level = SMB_FIND_FILE_UNIX;
+ else if (server->opt.protocol < SMB_PROTOCOL_NT1)
+ info_level = 1;
+
+ result = -ENOMEM;
+ if (! (name_buf = kmalloc(SMB_MAXNAMELEN+2, GFP_KERNEL)))
+ goto out;
+ if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
+ goto out_name;
+ param = req->rq_buffer;
+
+ /*
+ * Encode the initial path
+ */
+ mask = param + 12;
+
+ result = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dir, &star);
+ if (result <= 0)
+ goto out_free;
+ mask_len = result - 1; /* mask_len is strlen, not #bytes */
+ result = 0;
+ first = 1;
+ VERBOSE("starting mask_len=%d, mask=%s\n", mask_len, mask);
+
+ entries_seen = 2;
+ ff_eos = 0;
+
+ while (ff_eos == 0) {
+ loop_count += 1;
+ if (loop_count > 10) {
+ printk(KERN_WARNING "smb_proc_readdir_long: "
+ "Looping in FIND_NEXT??\n");
+ result = -EIO;
+ break;
+ }
+
+ if (first != 0) {
+ command = TRANSACT2_FINDFIRST;
+ WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
+ WSET(param, 2, max_matches); /* max count */
+ WSET(param, 4, SMB_CLOSE_IF_END);
+ WSET(param, 6, info_level);
+ DSET(param, 8, 0);
+ } else {
+ command = TRANSACT2_FINDNEXT;
+
+ VERBOSE("handle=0x%X, lastname=%d, mask=%.*s\n",
+ ff_dir_handle, ff_lastname, mask_len, mask);
+
+ WSET(param, 0, ff_dir_handle); /* search handle */
+ WSET(param, 2, max_matches); /* max count */
+ WSET(param, 4, info_level);
+ DSET(param, 6, 0);
+ WSET(param, 10, SMB_CONTINUE_BIT|SMB_CLOSE_IF_END);
+ }
+
+ req->rq_trans2_command = command;
+ req->rq_ldata = 0;
+ req->rq_data = NULL;
+ req->rq_lparm = 12 + mask_len + 1;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0) {
+ PARANOIA("error=%d, breaking\n", result);
+ break;
+ }
+
+ if (req->rq_rcls == ERRSRV && req->rq_err == ERRerror) {
+ /* a damn Win95 bug - sometimes it clags if you
+ ask it too fast */
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(HZ/5);
+ continue;
+ }
+
+ if (req->rq_rcls != 0) {
+ result = smb_errno(req);
+ PARANOIA("name=%s, result=%d, rcls=%d, err=%d\n",
+ mask, result, req->rq_rcls, req->rq_err);
+ break;
+ }
+
+ /* parse out some important return info */
+ if (first != 0) {
+ ff_dir_handle = WVAL(req->rq_parm, 0);
+ ff_searchcount = WVAL(req->rq_parm, 2);
+ ff_eos = WVAL(req->rq_parm, 4);
+ ff_lastname = WVAL(req->rq_parm, 8);
+ } else {
+ ff_searchcount = WVAL(req->rq_parm, 0);
+ ff_eos = WVAL(req->rq_parm, 2);
+ ff_lastname = WVAL(req->rq_parm, 6);
+ }
+
+ if (ff_searchcount == 0)
+ break;
+
+ /* Now we are ready to parse smb directory entries. */
+
+ /* point to the data bytes */
+ p = req->rq_data;
+ for (i = 0; i < ff_searchcount; i++) {
+ /* make sure we stay within the buffer */
+ if (p >= req->rq_data + req->rq_ldata) {
+ printk(KERN_ERR "smb_proc_readdir_long: "
+ "dirent pointer outside buffer! "
+ "%p %d@%p\n",
+ p, req->rq_ldata, req->rq_data);
+ result = -EIO; /* always a comm. error? */
+ goto out_free;
+ }
+
+ p = smb_decode_long_dirent(server, p, info_level,
+ &qname, &fattr, name_buf);
+
+ /* ignore . and .. from the server */
+ if (entries_seen == 2 && qname.name[0] == '.') {
+ if (qname.len == 1)
+ continue;
+ if (qname.name[1] == '.' && qname.len == 2)
+ continue;
+ }
+
+ if (!smb_fill_cache(filp, dirent, filldir, ctl,
+ &qname, &fattr))
+ ; /* stop reading? */
+ entries_seen++;
+ }
+
+ VERBOSE("received %d entries, eos=%d\n", ff_searchcount,ff_eos);
+
+ /*
+ * We might need the lastname for continuations.
+ *
+ * Note that some servers (win95?) point to the filename and
+ * others (NT4, Samba using NT1) to the dir entry. We assume
+ * here that those who do not point to a filename do not need
+ * this info to continue the listing.
+ *
+ * OS/2 needs this and talks infolevel 1.
+ * NetApps want lastname with infolevel 260.
+ * win2k want lastname with infolevel 260, and points to
+ * the record not to the name.
+ * Samba+CifsUnixExt doesn't need lastname.
+ *
+ * Both are happy if we return the data they point to. So we do.
+ * (FIXME: above is not true with win2k)
+ */
+ mask_len = 0;
+ if (info_level != SMB_FIND_FILE_UNIX &&
+ ff_lastname > 0 && ff_lastname < req->rq_ldata) {
+ lastname = req->rq_data + ff_lastname;
+
+ switch (info_level) {
+ case 260:
+ mask_len = req->rq_ldata - ff_lastname;
+ break;
+ case 1:
+ /* lastname points to a length byte */
+ mask_len = *lastname++;
+ if (ff_lastname + 1 + mask_len > req->rq_ldata)
+ mask_len = req->rq_ldata - ff_lastname - 1;
+ break;
+ }
+
+ /*
+ * Update the mask string for the next message.
+ */
+ if (mask_len > 255)
+ mask_len = 255;
+ if (mask_len)
+ strncpy(mask, lastname, mask_len);
+ }
+ mask_len = strnlen(mask, mask_len);
+ VERBOSE("new mask, len=%d@%d of %d, mask=%.*s\n",
+ mask_len, ff_lastname, req->rq_ldata, mask_len, mask);
+
+ first = 0;
+ loop_count = 0;
+ }
+
+out_free:
+ smb_rput(req);
+out_name:
+ kfree(name_buf);
+out:
+ unlock_kernel();
+ return result;
+}
+
+/*
+ * This version uses the trans2 TRANSACT2_FINDFIRST message
+ * to get the attribute data.
+ *
+ * Bugs Noted:
+ */
+static int
+smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
+ struct smb_fattr *fattr)
+{
+ char *param, *mask;
+ __u16 date, time;
+ int mask_len, result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+ param = req->rq_buffer;
+ mask = param + 12;
+
+ mask_len = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dentry,NULL);
+ if (mask_len < 0) {
+ result = mask_len;
+ goto out_free;
+ }
+ VERBOSE("name=%s, len=%d\n", mask, mask_len);
+ WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
+ WSET(param, 2, 1); /* max count */
+ WSET(param, 4, 1); /* close after this call */
+ WSET(param, 6, 1); /* info_level */
+ DSET(param, 8, 0);
+
+ req->rq_trans2_command = TRANSACT2_FINDFIRST;
+ req->rq_ldata = 0;
+ req->rq_data = NULL;
+ req->rq_lparm = 12 + mask_len;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+ if (req->rq_rcls != 0) {
+ result = smb_errno(req);
+#ifdef SMBFS_PARANOIA
+ if (result != -ENOENT)
+ PARANOIA("error for %s, rcls=%d, err=%d\n",
+ mask, req->rq_rcls, req->rq_err);
+#endif
+ goto out_free;
+ }
+ /* Make sure we got enough data ... */
+ result = -EINVAL;
+ if (req->rq_ldata < 22 || WVAL(req->rq_parm, 2) != 1) {
+ PARANOIA("bad result for %s, len=%d, count=%d\n",
+ mask, req->rq_ldata, WVAL(req->rq_parm, 2));
+ goto out_free;
+ }
+
+ /*
+ * Decode the response into the fattr ...
+ */
+ date = WVAL(req->rq_data, 0);
+ time = WVAL(req->rq_data, 2);
+ fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
+ fattr->f_ctime.tv_nsec = 0;
+
+ date = WVAL(req->rq_data, 4);
+ time = WVAL(req->rq_data, 6);
+ fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
+ fattr->f_atime.tv_nsec = 0;
+
+ date = WVAL(req->rq_data, 8);
+ time = WVAL(req->rq_data, 10);
+ fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
+ fattr->f_mtime.tv_nsec = 0;
+ VERBOSE("name=%s, date=%x, time=%x, mtime=%ld\n",
+ mask, date, time, fattr->f_mtime);
+ fattr->f_size = DVAL(req->rq_data, 12);
+ /* ULONG allocation size */
+ fattr->attr = WVAL(req->rq_data, 20);
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *fattr)
+{
+ int result;
+ char *p;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ p = smb_setup_header(req, SMBgetatr, 0, 0);
+ result = smb_simple_encode_path(req, &p, dir, NULL);
+ if (result < 0)
+ goto out_free;
+ smb_setup_bcc(req, p);
+
+ if ((result = smb_request_ok(req, SMBgetatr, 10, 0)) < 0)
+ goto out_free;
+ fattr->attr = WVAL(req->rq_header, smb_vwv0);
+ fattr->f_mtime.tv_sec = local2utc(server, DVAL(req->rq_header, smb_vwv1));
+ fattr->f_mtime.tv_nsec = 0;
+ fattr->f_size = DVAL(req->rq_header, smb_vwv3);
+ fattr->f_ctime = fattr->f_mtime;
+ fattr->f_atime = fattr->f_mtime;
+#ifdef SMBFS_DEBUG_TIMESTAMP
+ printk("getattr_core: %s/%s, mtime=%ld\n",
+ DENTRY_PATH(dir), fattr->f_mtime);
+#endif
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * Bugs Noted:
+ * (1) Win 95 swaps the date and time fields in the standard info level.
+ */
+static int
+smb_proc_getattr_trans2(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_request *req, int infolevel)
+{
+ char *p, *param;
+ int result;
+
+ param = req->rq_buffer;
+ WSET(param, 0, infolevel);
+ DSET(param, 2, 0);
+ result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
+ if (result < 0)
+ goto out;
+ p = param + 6 + result;
+
+ req->rq_trans2_command = TRANSACT2_QPATHINFO;
+ req->rq_ldata = 0;
+ req->rq_data = NULL;
+ req->rq_lparm = p - param;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out;
+ if (req->rq_rcls != 0) {
+ VERBOSE("for %s: result=%d, rcls=%d, err=%d\n",
+ &param[6], result, req->rq_rcls, req->rq_err);
+ result = smb_errno(req);
+ goto out;
+ }
+ result = -ENOENT;
+ if (req->rq_ldata < 22) {
+ PARANOIA("not enough data for %s, len=%d\n",
+ &param[6], req->rq_ldata);
+ goto out;
+ }
+
+ result = 0;
+out:
+ return result;
+}
+
+static int
+smb_proc_getattr_trans2_std(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *attr)
+{
+ u16 date, time;
+ int off_date = 0, off_time = 2;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ result = smb_proc_getattr_trans2(server, dir, req, SMB_INFO_STANDARD);
+ if (result < 0)
+ goto out_free;
+
+ /*
+ * Kludge alert: Win 95 swaps the date and time field,
+ * contrary to the CIFS docs and Win NT practice.
+ */
+ if (server->mnt->flags & SMB_MOUNT_WIN95) {
+ off_date = 2;
+ off_time = 0;
+ }
+ date = WVAL(req->rq_data, off_date);
+ time = WVAL(req->rq_data, off_time);
+ attr->f_ctime.tv_sec = date_dos2unix(server, date, time);
+ attr->f_ctime.tv_nsec = 0;
+
+ date = WVAL(req->rq_data, 4 + off_date);
+ time = WVAL(req->rq_data, 4 + off_time);
+ attr->f_atime.tv_sec = date_dos2unix(server, date, time);
+ attr->f_atime.tv_nsec = 0;
+
+ date = WVAL(req->rq_data, 8 + off_date);
+ time = WVAL(req->rq_data, 8 + off_time);
+ attr->f_mtime.tv_sec = date_dos2unix(server, date, time);
+ attr->f_mtime.tv_nsec = 0;
+#ifdef SMBFS_DEBUG_TIMESTAMP
+ printk(KERN_DEBUG "getattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
+ DENTRY_PATH(dir), date, time, attr->f_mtime);
+#endif
+ attr->f_size = DVAL(req->rq_data, 12);
+ attr->attr = WVAL(req->rq_data, 20);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_getattr_trans2_all(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *attr)
+{
+ struct smb_request *req;
+ int result;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ result = smb_proc_getattr_trans2(server, dir, req,
+ SMB_QUERY_FILE_ALL_INFO);
+ if (result < 0)
+ goto out_free;
+
+ attr->f_ctime = smb_ntutc2unixutc(LVAL(req->rq_data, 0));
+ attr->f_atime = smb_ntutc2unixutc(LVAL(req->rq_data, 8));
+ attr->f_mtime = smb_ntutc2unixutc(LVAL(req->rq_data, 16));
+ /* change (24) */
+ attr->attr = WVAL(req->rq_data, 32);
+ /* pad? (34) */
+ /* allocated size (40) */
+ attr->f_size = LVAL(req->rq_data, 48);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_getattr_unix(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *attr)
+{
+ struct smb_request *req;
+ int result;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ result = smb_proc_getattr_trans2(server, dir, req,
+ SMB_QUERY_FILE_UNIX_BASIC);
+ if (result < 0)
+ goto out_free;
+
+ smb_decode_unix_basic(attr, server, req->rq_data);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_getattr_95(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *attr)
+{
+ struct inode *inode = dir->d_inode;
+ int result;
+
+ /* FIXME: why not use the "all" version? */
+ result = smb_proc_getattr_trans2_std(server, dir, attr);
+ if (result < 0)
+ goto out;
+
+ /*
+ * None of the getattr versions here can make win9x return the right
+ * filesize if there are changes made to an open file.
+ * A seek-to-end does return the right size, but we only need to do
+ * that on files we have written.
+ */
+ if (inode && SMB_I(inode)->flags & SMB_F_LOCALWRITE &&
+ smb_is_open(inode))
+ {
+ __u16 fileid = SMB_I(inode)->fileid;
+ attr->f_size = smb_proc_seek(server, fileid, 2, 0);
+ }
+
+out:
+ return result;
+}
+
+static int
+smb_proc_ops_wait(struct smb_sb_info *server)
+{
+ int result;
+
+ result = wait_event_interruptible_timeout(server->conn_wq,
+ server->conn_complete, 30*HZ);
+
+ if (!result || signal_pending(current))
+ return -EIO;
+
+ return 0;
+}
+
+static int
+smb_proc_getattr_null(struct smb_sb_info *server, struct dentry *dir,
+ struct smb_fattr *fattr)
+{
+ int result;
+
+ if (smb_proc_ops_wait(server) < 0)
+ return -EIO;
+
+ smb_init_dirent(server, fattr);
+ result = server->ops->getattr(server, dir, fattr);
+ smb_finish_dirent(server, fattr);
+
+ return result;
+}
+
+static int
+smb_proc_readdir_null(struct file *filp, void *dirent, filldir_t filldir,
+ struct smb_cache_control *ctl)
+{
+ struct smb_sb_info *server = server_from_dentry(filp->f_dentry);
+
+ if (smb_proc_ops_wait(server) < 0)
+ return -EIO;
+
+ return server->ops->readdir(filp, dirent, filldir, ctl);
+}
+
+int
+smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr)
+{
+ struct smb_sb_info *server = server_from_dentry(dir);
+ int result;
+
+ smb_init_dirent(server, fattr);
+ result = server->ops->getattr(server, dir, fattr);
+ smb_finish_dirent(server, fattr);
+
+ return result;
+}
+
+
+/*
+ * Because of bugs in the core protocol, we use this only to set
+ * attributes. See smb_proc_settime() below for timestamp handling.
+ *
+ * Bugs Noted:
+ * (1) If mtime is non-zero, both Win 3.1 and Win 95 fail
+ * with an undocumented error (ERRDOS code 50). Setting
+ * mtime to 0 allows the attributes to be set.
+ * (2) The extra parameters following the name string aren't
+ * in the CIFS docs, but seem to be necessary for operation.
+ */
+static int
+smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
+ __u16 attr)
+{
+ char *p;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+
+ p = smb_setup_header(req, SMBsetatr, 8, 0);
+ WSET(req->rq_header, smb_vwv0, attr);
+ DSET(req->rq_header, smb_vwv1, 0); /* mtime */
+ WSET(req->rq_header, smb_vwv3, 0); /* reserved values */
+ WSET(req->rq_header, smb_vwv4, 0);
+ WSET(req->rq_header, smb_vwv5, 0);
+ WSET(req->rq_header, smb_vwv6, 0);
+ WSET(req->rq_header, smb_vwv7, 0);
+ result = smb_simple_encode_path(req, &p, dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ if (p + 2 > (char *)req->rq_buffer + req->rq_bufsize) {
+ result = -ENAMETOOLONG;
+ goto out_free;
+ }
+ *p++ = 4;
+ *p++ = 0;
+ smb_setup_bcc(req, p);
+
+ result = smb_request_ok(req, SMBsetatr, 0, 0);
+ if (result < 0)
+ goto out_free;
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * Because of bugs in the trans2 setattr messages, we must set
+ * attributes and timestamps separately. The core SMBsetatr
+ * message seems to be the only reliable way to set attributes.
+ */
+int
+smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr)
+{
+ struct smb_sb_info *server = server_from_dentry(dir);
+ int result;
+
+ VERBOSE("setting %s/%s, open=%d\n",
+ DENTRY_PATH(dir), smb_is_open(dir->d_inode));
+ result = smb_proc_setattr_core(server, dir, fattr->attr);
+ return result;
+}
+
+/*
+ * Sets the timestamps for an file open with write permissions.
+ */
+static int
+smb_proc_setattr_ext(struct smb_sb_info *server,
+ struct inode *inode, struct smb_fattr *fattr)
+{
+ __u16 date, time;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBsetattrE, 7, 0);
+ WSET(req->rq_header, smb_vwv0, SMB_I(inode)->fileid);
+ /* We don't change the creation time */
+ WSET(req->rq_header, smb_vwv1, 0);
+ WSET(req->rq_header, smb_vwv2, 0);
+ date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
+ WSET(req->rq_header, smb_vwv3, date);
+ WSET(req->rq_header, smb_vwv4, time);
+ date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
+ WSET(req->rq_header, smb_vwv5, date);
+ WSET(req->rq_header, smb_vwv6, time);
+#ifdef SMBFS_DEBUG_TIMESTAMP
+ printk(KERN_DEBUG "smb_proc_setattr_ext: date=%d, time=%d, mtime=%ld\n",
+ date, time, fattr->f_mtime);
+#endif
+
+ req->rq_flags |= SMB_REQ_NORETRY;
+ result = smb_request_ok(req, SMBsetattrE, 0, 0);
+ if (result < 0)
+ goto out_free;
+ result = 0;
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * Bugs Noted:
+ * (1) The TRANSACT2_SETPATHINFO message under Win NT 4.0 doesn't
+ * set the file's attribute flags.
+ */
+static int
+smb_proc_setattr_trans2(struct smb_sb_info *server,
+ struct dentry *dir, struct smb_fattr *fattr)
+{
+ __u16 date, time;
+ char *p, *param;
+ int result;
+ char data[26];
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+ param = req->rq_buffer;
+
+ WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */
+ DSET(param, 2, 0);
+ result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
+ if (result < 0)
+ goto out_free;
+ p = param + 6 + result;
+
+ WSET(data, 0, 0); /* creation time */
+ WSET(data, 2, 0);
+ date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
+ WSET(data, 4, date);
+ WSET(data, 6, time);
+ date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
+ WSET(data, 8, date);
+ WSET(data, 10, time);
+#ifdef SMBFS_DEBUG_TIMESTAMP
+ printk(KERN_DEBUG "setattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
+ DENTRY_PATH(dir), date, time, fattr->f_mtime);
+#endif
+ DSET(data, 12, 0); /* size */
+ DSET(data, 16, 0); /* blksize */
+ WSET(data, 20, 0); /* attr */
+ DSET(data, 22, 0); /* ULONG EA size */
+
+ req->rq_trans2_command = TRANSACT2_SETPATHINFO;
+ req->rq_ldata = 26;
+ req->rq_data = data;
+ req->rq_lparm = p - param;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+ result = 0;
+ if (req->rq_rcls != 0)
+ result = smb_errno(req);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * ATTR_MODE 0x001
+ * ATTR_UID 0x002
+ * ATTR_GID 0x004
+ * ATTR_SIZE 0x008
+ * ATTR_ATIME 0x010
+ * ATTR_MTIME 0x020
+ * ATTR_CTIME 0x040
+ * ATTR_ATIME_SET 0x080
+ * ATTR_MTIME_SET 0x100
+ * ATTR_FORCE 0x200
+ * ATTR_ATTR_FLAG 0x400
+ *
+ * major/minor should only be set by mknod.
+ */
+int
+smb_proc_setattr_unix(struct dentry *d, struct iattr *attr,
+ unsigned int major, unsigned int minor)
+{
+ struct smb_sb_info *server = server_from_dentry(d);
+ u64 nttime;
+ char *p, *param;
+ int result;
+ char data[100];
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+ param = req->rq_buffer;
+
+ DEBUG1("valid flags = 0x%04x\n", attr->ia_valid);
+
+ WSET(param, 0, SMB_SET_FILE_UNIX_BASIC);
+ DSET(param, 2, 0);
+ result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
+ if (result < 0)
+ goto out_free;
+ p = param + 6 + result;
+
+ /* 0 L file size in bytes */
+ /* 8 L file size on disk in bytes (block count) */
+ /* 40 L uid */
+ /* 48 L gid */
+ /* 56 W file type enum */
+ /* 60 L devmajor */
+ /* 68 L devminor */
+ /* 76 L unique ID (inode) */
+ /* 84 L permissions */
+ /* 92 L link count */
+ LSET(data, 0, SMB_SIZE_NO_CHANGE);
+ LSET(data, 8, SMB_SIZE_NO_CHANGE);
+ LSET(data, 16, SMB_TIME_NO_CHANGE);
+ LSET(data, 24, SMB_TIME_NO_CHANGE);
+ LSET(data, 32, SMB_TIME_NO_CHANGE);
+ LSET(data, 40, SMB_UID_NO_CHANGE);
+ LSET(data, 48, SMB_GID_NO_CHANGE);
+ LSET(data, 56, smb_filetype_from_mode(attr->ia_mode));
+ LSET(data, 60, major);
+ LSET(data, 68, minor);
+ LSET(data, 76, 0);
+ LSET(data, 84, SMB_MODE_NO_CHANGE);
+ LSET(data, 92, 0);
+
+ if (attr->ia_valid & ATTR_SIZE) {
+ LSET(data, 0, attr->ia_size);
+ LSET(data, 8, 0); /* can't set anyway */
+ }
+
+ /*
+ * FIXME: check the conversion function it the correct one
+ *
+ * we can't set ctime but we might as well pass this to the server
+ * and let it ignore it.
+ */
+ if (attr->ia_valid & ATTR_CTIME) {
+ nttime = smb_unixutc2ntutc(attr->ia_ctime);
+ LSET(data, 16, nttime);
+ }
+ if (attr->ia_valid & ATTR_ATIME) {
+ nttime = smb_unixutc2ntutc(attr->ia_atime);
+ LSET(data, 24, nttime);
+ }
+ if (attr->ia_valid & ATTR_MTIME) {
+ nttime = smb_unixutc2ntutc(attr->ia_mtime);
+ LSET(data, 32, nttime);
+ }
+
+ if (attr->ia_valid & ATTR_UID) {
+ LSET(data, 40, attr->ia_uid);
+ }
+ if (attr->ia_valid & ATTR_GID) {
+ LSET(data, 48, attr->ia_gid);
+ }
+
+ if (attr->ia_valid & ATTR_MODE) {
+ LSET(data, 84, attr->ia_mode);
+ }
+
+ req->rq_trans2_command = TRANSACT2_SETPATHINFO;
+ req->rq_ldata = 100;
+ req->rq_data = data;
+ req->rq_lparm = p - param;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+
+/*
+ * Set the modify and access timestamps for a file.
+ *
+ * Incredibly enough, in all of SMB there is no message to allow
+ * setting both attributes and timestamps at once.
+ *
+ * Bugs Noted:
+ * (1) Win 95 doesn't support the TRANSACT2_SETFILEINFO message
+ * with info level 1 (INFO_STANDARD).
+ * (2) Win 95 seems not to support setting directory timestamps.
+ * (3) Under the core protocol apparently the only way to set the
+ * timestamp is to open and close the file.
+ */
+int
+smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr)
+{
+ struct smb_sb_info *server = server_from_dentry(dentry);
+ struct inode *inode = dentry->d_inode;
+ int result;
+
+ VERBOSE("setting %s/%s, open=%d\n",
+ DENTRY_PATH(dentry), smb_is_open(inode));
+
+ /* setting the time on a Win95 server fails (tridge) */
+ if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2 &&
+ !(server->mnt->flags & SMB_MOUNT_WIN95)) {
+ if (smb_is_open(inode) && SMB_I(inode)->access != SMB_O_RDONLY)
+ result = smb_proc_setattr_ext(server, inode, fattr);
+ else
+ result = smb_proc_setattr_trans2(server, dentry, fattr);
+ } else {
+ /*
+ * Fail silently on directories ... timestamp can't be set?
+ */
+ result = 0;
+ if (S_ISREG(inode->i_mode)) {
+ /*
+ * Set the mtime by opening and closing the file.
+ * Note that the file is opened read-only, but this
+ * still allows us to set the date (tridge)
+ */
+ result = -EACCES;
+ if (!smb_is_open(inode))
+ smb_proc_open(server, dentry, SMB_O_RDONLY);
+ if (smb_is_open(inode)) {
+ inode->i_mtime = fattr->f_mtime;
+ result = smb_proc_close_inode(server, inode);
+ }
+ }
+ }
+
+ return result;
+}
+
+int
+smb_proc_dskattr(struct super_block *sb, struct kstatfs *attr)
+{
+ struct smb_sb_info *server = SMB_SB(sb);
+ int result;
+ char *p;
+ long unit;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 0)))
+ goto out;
+
+ smb_setup_header(req, SMBdskattr, 0, 0);
+ if ((result = smb_request_ok(req, SMBdskattr, 5, 0)) < 0)
+ goto out_free;
+ p = SMB_VWV(req->rq_header);
+ unit = (WVAL(p, 2) * WVAL(p, 4)) >> SMB_ST_BLKSHIFT;
+ attr->f_blocks = WVAL(p, 0) * unit;
+ attr->f_bsize = SMB_ST_BLKSIZE;
+ attr->f_bavail = attr->f_bfree = WVAL(p, 6) * unit;
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+int
+smb_proc_read_link(struct smb_sb_info *server, struct dentry *d,
+ char *buffer, int len)
+{
+ char *p, *param;
+ int result;
+ struct smb_request *req;
+
+ DEBUG1("readlink of %s/%s\n", DENTRY_PATH(d));
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+ param = req->rq_buffer;
+
+ WSET(param, 0, SMB_QUERY_FILE_UNIX_LINK);
+ DSET(param, 2, 0);
+ result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
+ if (result < 0)
+ goto out_free;
+ p = param + 6 + result;
+
+ req->rq_trans2_command = TRANSACT2_QPATHINFO;
+ req->rq_ldata = 0;
+ req->rq_data = NULL;
+ req->rq_lparm = p - param;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+ DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
+ &param[6], result, req->rq_rcls, req->rq_err);
+
+ /* copy data up to the \0 or buffer length */
+ result = len;
+ if (req->rq_ldata < len)
+ result = req->rq_ldata;
+ strncpy(buffer, req->rq_data, result);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+
+/*
+ * Create a symlink object called dentry which points to oldpath.
+ * Samba does not permit dangling links but returns a suitable error message.
+ */
+int
+smb_proc_symlink(struct smb_sb_info *server, struct dentry *d,
+ const char *oldpath)
+{
+ char *p, *param;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+ param = req->rq_buffer;
+
+ WSET(param, 0, SMB_SET_FILE_UNIX_LINK);
+ DSET(param, 2, 0);
+ result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, d, NULL);
+ if (result < 0)
+ goto out_free;
+ p = param + 6 + result;
+
+ req->rq_trans2_command = TRANSACT2_SETPATHINFO;
+ req->rq_ldata = strlen(oldpath) + 1;
+ req->rq_data = (char *) oldpath;
+ req->rq_lparm = p - param;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+
+ DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
+ &param[6], result, req->rq_rcls, req->rq_err);
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+/*
+ * Create a hard link object called new_dentry which points to dentry.
+ */
+int
+smb_proc_link(struct smb_sb_info *server, struct dentry *dentry,
+ struct dentry *new_dentry)
+{
+ char *p, *param;
+ int result;
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, PAGE_SIZE)))
+ goto out;
+ param = req->rq_buffer;
+
+ WSET(param, 0, SMB_SET_FILE_UNIX_HLINK);
+ DSET(param, 2, 0);
+ result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1,
+ new_dentry, NULL);
+ if (result < 0)
+ goto out_free;
+ p = param + 6 + result;
+
+ /* Grr, pointless separation of parameters and data ... */
+ req->rq_data = p;
+ req->rq_ldata = smb_encode_path(server, p, SMB_MAXPATHLEN+1,
+ dentry, NULL);
+
+ req->rq_trans2_command = TRANSACT2_SETPATHINFO;
+ req->rq_lparm = p - param;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+
+ DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
+ &param[6], result, req->rq_rcls, req->rq_err);
+ result = 0;
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+static int
+smb_proc_query_cifsunix(struct smb_sb_info *server)
+{
+ int result;
+ int major, minor;
+ u64 caps;
+ char param[2];
+ struct smb_request *req;
+
+ result = -ENOMEM;
+ if (! (req = smb_alloc_request(server, 100)))
+ goto out;
+
+ WSET(param, 0, SMB_QUERY_CIFS_UNIX_INFO);
+
+ req->rq_trans2_command = TRANSACT2_QFSINFO;
+ req->rq_ldata = 0;
+ req->rq_data = NULL;
+ req->rq_lparm = 2;
+ req->rq_parm = param;
+ req->rq_flags = 0;
+ result = smb_add_request(req);
+ if (result < 0)
+ goto out_free;
+
+ if (req->rq_ldata < 12) {
+ PARANOIA("Not enough data\n");
+ goto out_free;
+ }
+ major = WVAL(req->rq_data, 0);
+ minor = WVAL(req->rq_data, 2);
+
+ DEBUG1("Server implements CIFS Extensions for UNIX systems v%d.%d\n",
+ major, minor);
+ /* FIXME: verify that we are ok with this major/minor? */
+
+ caps = LVAL(req->rq_data, 4);
+ DEBUG1("Server capabilities 0x%016llx\n", caps);
+
+out_free:
+ smb_rput(req);
+out:
+ return result;
+}
+
+
+static void
+install_ops(struct smb_ops *dst, struct smb_ops *src)
+{
+ memcpy(dst, src, sizeof(void *) * SMB_OPS_NUM_STATIC);
+}
+
+/* < LANMAN2 */
+static struct smb_ops smb_ops_core =
+{
+ .read = smb_proc_read,
+ .write = smb_proc_write,
+ .readdir = smb_proc_readdir_short,
+ .getattr = smb_proc_getattr_core,
+ .truncate = smb_proc_trunc32,
+};
+
+/* LANMAN2, OS/2, others? */
+static struct smb_ops smb_ops_os2 =
+{
+ .read = smb_proc_read,
+ .write = smb_proc_write,
+ .readdir = smb_proc_readdir_long,
+ .getattr = smb_proc_getattr_trans2_std,
+ .truncate = smb_proc_trunc32,
+};
+
+/* Win95, and possibly some NetApp versions too */
+static struct smb_ops smb_ops_win95 =
+{
+ .read = smb_proc_read, /* does not support 12word readX */
+ .write = smb_proc_write,
+ .readdir = smb_proc_readdir_long,
+ .getattr = smb_proc_getattr_95,
+ .truncate = smb_proc_trunc95,
+};
+
+/* Samba, NT4 and NT5 */
+static struct smb_ops smb_ops_winNT =
+{
+ .read = smb_proc_readX,
+ .write = smb_proc_writeX,
+ .readdir = smb_proc_readdir_long,
+ .getattr = smb_proc_getattr_trans2_all,
+ .truncate = smb_proc_trunc64,
+};
+
+/* Samba w/ unix extensions. Others? */
+static struct smb_ops smb_ops_unix =
+{
+ .read = smb_proc_readX,
+ .write = smb_proc_writeX,
+ .readdir = smb_proc_readdir_long,
+ .getattr = smb_proc_getattr_unix,
+ /* FIXME: core/ext/time setattr needs to be cleaned up! */
+ /* .setattr = smb_proc_setattr_unix, */
+ .truncate = smb_proc_trunc64,
+};
+
+/* Place holder until real ops are in place */
+static struct smb_ops smb_ops_null =
+{
+ .readdir = smb_proc_readdir_null,
+ .getattr = smb_proc_getattr_null,
+};
+
+void smb_install_null_ops(struct smb_ops *ops)
+{
+ install_ops(ops, &smb_ops_null);
+}
diff --git a/fs/smbfs/proto.h b/fs/smbfs/proto.h
new file mode 100644
index 000000000000..e866ec8660d0
--- /dev/null
+++ b/fs/smbfs/proto.h
@@ -0,0 +1,87 @@
+/*
+ * Autogenerated with cproto on: Sat Sep 13 17:18:51 CEST 2003
+ */
+
+struct smb_request;
+struct sock;
+struct statfs;
+
+/* proc.c */
+extern int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp);
+extern __u32 smb_len(__u8 *p);
+extern int smb_get_rsize(struct smb_sb_info *server);
+extern int smb_get_wsize(struct smb_sb_info *server);
+extern int smb_errno(struct smb_request *req);
+extern int smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt);
+extern __u8 *smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc);
+extern int smb_open(struct dentry *dentry, int wish);
+extern int smb_close(struct inode *ino);
+extern int smb_close_fileid(struct dentry *dentry, __u16 fileid);
+extern int smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid);
+extern int smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry);
+extern int smb_proc_mkdir(struct dentry *dentry);
+extern int smb_proc_rmdir(struct dentry *dentry);
+extern int smb_proc_unlink(struct dentry *dentry);
+extern int smb_proc_flush(struct smb_sb_info *server, __u16 fileid);
+extern void smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr,
+ struct super_block *sb);
+extern int smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr);
+extern int smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr);
+extern int smb_proc_setattr_unix(struct dentry *d, struct iattr *attr, unsigned int major, unsigned int minor);
+extern int smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr);
+extern int smb_proc_dskattr(struct super_block *sb, struct kstatfs *attr);
+extern int smb_proc_read_link(struct smb_sb_info *server, struct dentry *d, char *buffer, int len);
+extern int smb_proc_symlink(struct smb_sb_info *server, struct dentry *d, const char *oldpath);
+extern int smb_proc_link(struct smb_sb_info *server, struct dentry *dentry, struct dentry *new_dentry);
+extern void smb_install_null_ops(struct smb_ops *ops);
+/* dir.c */
+extern struct file_operations smb_dir_operations;
+extern struct inode_operations smb_dir_inode_operations;
+extern struct inode_operations smb_dir_inode_operations_unix;
+extern void smb_new_dentry(struct dentry *dentry);
+extern void smb_renew_times(struct dentry *dentry);
+/* cache.c */
+extern void smb_invalid_dir_cache(struct inode *dir);
+extern void smb_invalidate_dircache_entries(struct dentry *parent);
+extern struct dentry *smb_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos);
+extern int smb_fill_cache(struct file *filp, void *dirent, filldir_t filldir, struct smb_cache_control *ctrl, struct qstr *qname, struct smb_fattr *entry);
+/* sock.c */
+extern void smb_data_ready(struct sock *sk, int len);
+extern int smb_valid_socket(struct inode *inode);
+extern void smb_close_socket(struct smb_sb_info *server);
+extern int smb_recv_available(struct smb_sb_info *server);
+extern int smb_receive_header(struct smb_sb_info *server);
+extern int smb_receive_drop(struct smb_sb_info *server);
+extern int smb_receive(struct smb_sb_info *server, struct smb_request *req);
+extern int smb_send_request(struct smb_request *req);
+/* inode.c */
+extern struct inode *smb_iget(struct super_block *sb, struct smb_fattr *fattr);
+extern void smb_get_inode_attr(struct inode *inode, struct smb_fattr *fattr);
+extern void smb_set_inode_attr(struct inode *inode, struct smb_fattr *fattr);
+extern void smb_invalidate_inodes(struct smb_sb_info *server);
+extern int smb_revalidate_inode(struct dentry *dentry);
+extern int smb_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
+extern int smb_notify_change(struct dentry *dentry, struct iattr *attr);
+/* file.c */
+extern struct address_space_operations smb_file_aops;
+extern struct file_operations smb_file_operations;
+extern struct inode_operations smb_file_inode_operations;
+/* ioctl.c */
+extern int smb_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
+/* smbiod.c */
+extern void smbiod_wake_up(void);
+extern int smbiod_register_server(struct smb_sb_info *server);
+extern void smbiod_unregister_server(struct smb_sb_info *server);
+extern void smbiod_flush(struct smb_sb_info *server);
+extern int smbiod_retry(struct smb_sb_info *server);
+/* request.c */
+extern int smb_init_request_cache(void);
+extern void smb_destroy_request_cache(void);
+extern struct smb_request *smb_alloc_request(struct smb_sb_info *server, int bufsize);
+extern void smb_rput(struct smb_request *req);
+extern int smb_add_request(struct smb_request *req);
+extern int smb_request_send_server(struct smb_sb_info *server);
+extern int smb_request_recv(struct smb_sb_info *server);
+/* symlink.c */
+extern int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname);
+extern struct inode_operations smb_link_inode_operations;
diff --git a/fs/smbfs/request.c b/fs/smbfs/request.c
new file mode 100644
index 000000000000..2d85dd7415bb
--- /dev/null
+++ b/fs/smbfs/request.c
@@ -0,0 +1,823 @@
+/*
+ * request.c
+ *
+ * Copyright (C) 2001 by Urban Widmark
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/net.h>
+
+#include <linux/smb_fs.h>
+#include <linux/smbno.h>
+#include <linux/smb_mount.h>
+
+#include "smb_debug.h"
+#include "request.h"
+#include "proto.h"
+
+/* #define SMB_SLAB_DEBUG (SLAB_RED_ZONE | SLAB_POISON) */
+#define SMB_SLAB_DEBUG 0
+
+#define ROUND_UP(x) (((x)+3) & ~3)
+
+/* cache for request structures */
+static kmem_cache_t *req_cachep;
+
+static int smb_request_send_req(struct smb_request *req);
+
+/*
+ /proc/slabinfo:
+ name, active, num, objsize, active_slabs, num_slaps, #pages
+*/
+
+
+int smb_init_request_cache(void)
+{
+ req_cachep = kmem_cache_create("smb_request",
+ sizeof(struct smb_request), 0,
+ SMB_SLAB_DEBUG | SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (req_cachep == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void smb_destroy_request_cache(void)
+{
+ if (kmem_cache_destroy(req_cachep))
+ printk(KERN_INFO "smb_destroy_request_cache: not all structures were freed\n");
+}
+
+/*
+ * Allocate and initialise a request structure
+ */
+static struct smb_request *smb_do_alloc_request(struct smb_sb_info *server,
+ int bufsize)
+{
+ struct smb_request *req;
+ unsigned char *buf = NULL;
+
+ req = kmem_cache_alloc(req_cachep, SLAB_KERNEL);
+ VERBOSE("allocating request: %p\n", req);
+ if (!req)
+ goto out;
+
+ if (bufsize > 0) {
+ buf = smb_kmalloc(bufsize, GFP_NOFS);
+ if (!buf) {
+ kmem_cache_free(req_cachep, req);
+ return NULL;
+ }
+ }
+
+ memset(req, 0, sizeof(struct smb_request));
+ req->rq_buffer = buf;
+ req->rq_bufsize = bufsize;
+ req->rq_server = server;
+ init_waitqueue_head(&req->rq_wait);
+ INIT_LIST_HEAD(&req->rq_queue);
+ atomic_set(&req->rq_count, 1);
+
+out:
+ return req;
+}
+
+struct smb_request *smb_alloc_request(struct smb_sb_info *server, int bufsize)
+{
+ struct smb_request *req = NULL;
+
+ for (;;) {
+ atomic_inc(&server->nr_requests);
+ if (atomic_read(&server->nr_requests) <= MAX_REQUEST_HARD) {
+ req = smb_do_alloc_request(server, bufsize);
+ if (req != NULL)
+ break;
+ }
+
+#if 0
+ /*
+ * Try to free up at least one request in order to stay
+ * below the hard limit
+ */
+ if (nfs_try_to_free_pages(server))
+ continue;
+
+ if (signalled() && (server->flags & NFS_MOUNT_INTR))
+ return ERR_PTR(-ERESTARTSYS);
+ current->policy = SCHED_YIELD;
+ schedule();
+#else
+ /* FIXME: we want something like nfs does above, but that
+ requires changes to all callers and can wait. */
+ break;
+#endif
+ }
+ return req;
+}
+
+static void smb_free_request(struct smb_request *req)
+{
+ atomic_dec(&req->rq_server->nr_requests);
+ if (req->rq_buffer && !(req->rq_flags & SMB_REQ_STATIC))
+ smb_kfree(req->rq_buffer);
+ if (req->rq_trans2buffer)
+ smb_kfree(req->rq_trans2buffer);
+ kmem_cache_free(req_cachep, req);
+}
+
+/*
+ * What prevents a rget to race with a rput? The count must never drop to zero
+ * while it is in use. Only rput if it is ok that it is free'd.
+ */
+static void smb_rget(struct smb_request *req)
+{
+ atomic_inc(&req->rq_count);
+}
+void smb_rput(struct smb_request *req)
+{
+ if (atomic_dec_and_test(&req->rq_count)) {
+ list_del_init(&req->rq_queue);
+ smb_free_request(req);
+ }
+}
+
+/* setup to receive the data part of the SMB */
+static int smb_setup_bcc(struct smb_request *req)
+{
+ int result = 0;
+ req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
+
+ if (req->rq_rlen > req->rq_bufsize) {
+ PARANOIA("Packet too large %d > %d\n",
+ req->rq_rlen, req->rq_bufsize);
+ return -ENOBUFS;
+ }
+
+ req->rq_iov[0].iov_base = req->rq_buffer;
+ req->rq_iov[0].iov_len = req->rq_rlen;
+ req->rq_iovlen = 1;
+
+ return result;
+}
+
+/*
+ * Prepare a "normal" request structure.
+ */
+static int smb_setup_request(struct smb_request *req)
+{
+ int len = smb_len(req->rq_header) + 4;
+ req->rq_slen = len;
+
+ /* if we expect a data part in the reply we set the iov's to read it */
+ if (req->rq_resp_bcc)
+ req->rq_setup_read = smb_setup_bcc;
+
+ /* This tries to support re-using the same request */
+ req->rq_bytes_sent = 0;
+ req->rq_rcls = 0;
+ req->rq_err = 0;
+ req->rq_errno = 0;
+ req->rq_fragment = 0;
+ if (req->rq_trans2buffer)
+ smb_kfree(req->rq_trans2buffer);
+
+ return 0;
+}
+
+/*
+ * Prepare a transaction2 request structure
+ */
+static int smb_setup_trans2request(struct smb_request *req)
+{
+ struct smb_sb_info *server = req->rq_server;
+ int mparam, mdata;
+ static unsigned char padding[4];
+
+ /* I know the following is very ugly, but I want to build the
+ smb packet as efficiently as possible. */
+
+ const int smb_parameters = 15;
+ const int header = SMB_HEADER_LEN + 2 * smb_parameters + 2;
+ const int oparam = ROUND_UP(header + 3);
+ const int odata = ROUND_UP(oparam + req->rq_lparm);
+ const int bcc = (req->rq_data ? odata + req->rq_ldata :
+ oparam + req->rq_lparm) - header;
+
+ if ((bcc + oparam) > server->opt.max_xmit)
+ return -ENOMEM;
+ smb_setup_header(req, SMBtrans2, smb_parameters, bcc);
+
+ /*
+ * max parameters + max data + max setup == bufsize to make NT4 happy
+ * and not abort the transfer or split into multiple responses. It also
+ * makes smbfs happy as handling packets larger than the buffer size
+ * is extra work.
+ *
+ * OS/2 is probably going to hate me for this ...
+ */
+ mparam = SMB_TRANS2_MAX_PARAM;
+ mdata = req->rq_bufsize - mparam;
+
+ mdata = server->opt.max_xmit - mparam - 100;
+ if (mdata < 1024) {
+ mdata = 1024;
+ mparam = 20;
+ }
+
+#if 0
+ /* NT/win2k has ~4k max_xmit, so with this we request more than it wants
+ to return as one SMB. Useful for testing the fragmented trans2
+ handling. */
+ mdata = 8192;
+#endif
+
+ WSET(req->rq_header, smb_tpscnt, req->rq_lparm);
+ WSET(req->rq_header, smb_tdscnt, req->rq_ldata);
+ WSET(req->rq_header, smb_mprcnt, mparam);
+ WSET(req->rq_header, smb_mdrcnt, mdata);
+ WSET(req->rq_header, smb_msrcnt, 0); /* max setup always 0 ? */
+ WSET(req->rq_header, smb_flags, 0);
+ DSET(req->rq_header, smb_timeout, 0);
+ WSET(req->rq_header, smb_pscnt, req->rq_lparm);
+ WSET(req->rq_header, smb_psoff, oparam - 4);
+ WSET(req->rq_header, smb_dscnt, req->rq_ldata);
+ WSET(req->rq_header, smb_dsoff, req->rq_data ? odata - 4 : 0);
+ *(req->rq_header + smb_suwcnt) = 0x01; /* setup count */
+ *(req->rq_header + smb_suwcnt + 1) = 0x00; /* reserved */
+ WSET(req->rq_header, smb_setup0, req->rq_trans2_command);
+
+ req->rq_iovlen = 2;
+ req->rq_iov[0].iov_base = (void *) req->rq_header;
+ req->rq_iov[0].iov_len = oparam;
+ req->rq_iov[1].iov_base = (req->rq_parm==NULL) ? padding : req->rq_parm;
+ req->rq_iov[1].iov_len = req->rq_lparm;
+ req->rq_slen = oparam + req->rq_lparm;
+
+ if (req->rq_data) {
+ req->rq_iovlen += 2;
+ req->rq_iov[2].iov_base = padding;
+ req->rq_iov[2].iov_len = odata - oparam - req->rq_lparm;
+ req->rq_iov[3].iov_base = req->rq_data;
+ req->rq_iov[3].iov_len = req->rq_ldata;
+ req->rq_slen = odata + req->rq_ldata;
+ }
+
+ /* always a data part for trans2 replies */
+ req->rq_setup_read = smb_setup_bcc;
+
+ return 0;
+}
+
+/*
+ * Add a request and tell smbiod to process it
+ */
+int smb_add_request(struct smb_request *req)
+{
+ long timeleft;
+ struct smb_sb_info *server = req->rq_server;
+ int result = 0;
+
+ smb_setup_request(req);
+ if (req->rq_trans2_command) {
+ if (req->rq_buffer == NULL) {
+ PARANOIA("trans2 attempted without response buffer!\n");
+ return -EIO;
+ }
+ result = smb_setup_trans2request(req);
+ }
+ if (result < 0)
+ return result;
+
+#ifdef SMB_DEBUG_PACKET_SIZE
+ add_xmit_stats(req);
+#endif
+
+ /* add 'req' to the queue of requests */
+ if (smb_lock_server_interruptible(server))
+ return -EINTR;
+
+ /*
+ * Try to send the request as the process. If that fails we queue the
+ * request and let smbiod send it later.
+ */
+
+ /* FIXME: each server has a number on the maximum number of parallel
+ requests. 10, 50 or so. We should not allow more requests to be
+ active. */
+ if (server->mid > 0xf000)
+ server->mid = 0;
+ req->rq_mid = server->mid++;
+ WSET(req->rq_header, smb_mid, req->rq_mid);
+
+ result = 0;
+ if (server->state == CONN_VALID) {
+ if (list_empty(&server->xmitq))
+ result = smb_request_send_req(req);
+ if (result < 0) {
+ /* Connection lost? */
+ server->conn_error = result;
+ server->state = CONN_INVALID;
+ }
+ }
+ if (result != 1)
+ list_add_tail(&req->rq_queue, &server->xmitq);
+ smb_rget(req);
+
+ if (server->state != CONN_VALID)
+ smbiod_retry(server);
+
+ smb_unlock_server(server);
+
+ smbiod_wake_up();
+
+ timeleft = wait_event_interruptible_timeout(req->rq_wait,
+ req->rq_flags & SMB_REQ_RECEIVED, 30*HZ);
+ if (!timeleft || signal_pending(current)) {
+ /*
+ * On timeout or on interrupt we want to try and remove the
+ * request from the recvq/xmitq.
+ */
+ smb_lock_server(server);
+ if (!(req->rq_flags & SMB_REQ_RECEIVED)) {
+ list_del_init(&req->rq_queue);
+ smb_rput(req);
+ }
+ smb_unlock_server(server);
+ }
+
+ if (!timeleft) {
+ PARANOIA("request [%p, mid=%d] timed out!\n",
+ req, req->rq_mid);
+ VERBOSE("smb_com: %02x\n", *(req->rq_header + smb_com));
+ VERBOSE("smb_rcls: %02x\n", *(req->rq_header + smb_rcls));
+ VERBOSE("smb_flg: %02x\n", *(req->rq_header + smb_flg));
+ VERBOSE("smb_tid: %04x\n", WVAL(req->rq_header, smb_tid));
+ VERBOSE("smb_pid: %04x\n", WVAL(req->rq_header, smb_pid));
+ VERBOSE("smb_uid: %04x\n", WVAL(req->rq_header, smb_uid));
+ VERBOSE("smb_mid: %04x\n", WVAL(req->rq_header, smb_mid));
+ VERBOSE("smb_wct: %02x\n", *(req->rq_header + smb_wct));
+
+ req->rq_rcls = ERRSRV;
+ req->rq_err = ERRtimeout;
+
+ /* Just in case it was "stuck" */
+ smbiod_wake_up();
+ }
+ VERBOSE("woke up, rcls=%d\n", req->rq_rcls);
+
+ if (req->rq_rcls != 0)
+ req->rq_errno = smb_errno(req);
+ if (signal_pending(current))
+ req->rq_errno = -ERESTARTSYS;
+ return req->rq_errno;
+}
+
+/*
+ * Send a request and place it on the recvq if successfully sent.
+ * Must be called with the server lock held.
+ */
+static int smb_request_send_req(struct smb_request *req)
+{
+ struct smb_sb_info *server = req->rq_server;
+ int result;
+
+ if (req->rq_bytes_sent == 0) {
+ WSET(req->rq_header, smb_tid, server->opt.tid);
+ WSET(req->rq_header, smb_pid, 1);
+ WSET(req->rq_header, smb_uid, server->opt.server_uid);
+ }
+
+ result = smb_send_request(req);
+ if (result < 0 && result != -EAGAIN)
+ goto out;
+
+ result = 0;
+ if (!(req->rq_flags & SMB_REQ_TRANSMITTED))
+ goto out;
+
+ list_del_init(&req->rq_queue);
+ list_add_tail(&req->rq_queue, &server->recvq);
+ result = 1;
+out:
+ return result;
+}
+
+/*
+ * Sends one request for this server. (smbiod)
+ * Must be called with the server lock held.
+ * Returns: <0 on error
+ * 0 if no request could be completely sent
+ * 1 if all data for one request was sent
+ */
+int smb_request_send_server(struct smb_sb_info *server)
+{
+ struct list_head *head;
+ struct smb_request *req;
+ int result;
+
+ if (server->state != CONN_VALID)
+ return 0;
+
+ /* dequeue first request, if any */
+ req = NULL;
+ head = server->xmitq.next;
+ if (head != &server->xmitq) {
+ req = list_entry(head, struct smb_request, rq_queue);
+ }
+ if (!req)
+ return 0;
+
+ result = smb_request_send_req(req);
+ if (result < 0) {
+ server->conn_error = result;
+ list_del_init(&req->rq_queue);
+ list_add(&req->rq_queue, &server->xmitq);
+ result = -EIO;
+ goto out;
+ }
+
+out:
+ return result;
+}
+
+/*
+ * Try to find a request matching this "mid". Typically the first entry will
+ * be the matching one.
+ */
+static struct smb_request *find_request(struct smb_sb_info *server, int mid)
+{
+ struct list_head *tmp;
+ struct smb_request *req = NULL;
+
+ list_for_each(tmp, &server->recvq) {
+ req = list_entry(tmp, struct smb_request, rq_queue);
+ if (req->rq_mid == mid) {
+ break;
+ }
+ req = NULL;
+ }
+
+ if (!req) {
+ VERBOSE("received reply with mid %d but no request!\n",
+ WVAL(server->header, smb_mid));
+ server->rstate = SMB_RECV_DROP;
+ }
+
+ return req;
+}
+
+/*
+ * Called when we have read the smb header and believe this is a response.
+ */
+static int smb_init_request(struct smb_sb_info *server, struct smb_request *req)
+{
+ int hdrlen, wct;
+
+ memcpy(req->rq_header, server->header, SMB_HEADER_LEN);
+
+ wct = *(req->rq_header + smb_wct);
+ if (wct > 20) {
+ PARANOIA("wct too large, %d > 20\n", wct);
+ server->rstate = SMB_RECV_DROP;
+ return 0;
+ }
+
+ req->rq_resp_wct = wct;
+ hdrlen = SMB_HEADER_LEN + wct*2 + 2;
+ VERBOSE("header length: %d smb_wct: %2d\n", hdrlen, wct);
+
+ req->rq_bytes_recvd = SMB_HEADER_LEN;
+ req->rq_rlen = hdrlen;
+ req->rq_iov[0].iov_base = req->rq_header;
+ req->rq_iov[0].iov_len = hdrlen;
+ req->rq_iovlen = 1;
+ server->rstate = SMB_RECV_PARAM;
+
+#ifdef SMB_DEBUG_PACKET_SIZE
+ add_recv_stats(smb_len(server->header));
+#endif
+ return 0;
+}
+
+/*
+ * Reads the SMB parameters
+ */
+static int smb_recv_param(struct smb_sb_info *server, struct smb_request *req)
+{
+ int result;
+
+ result = smb_receive(server, req);
+ if (result < 0)
+ return result;
+ if (req->rq_bytes_recvd < req->rq_rlen)
+ return 0;
+
+ VERBOSE("result: %d smb_bcc: %04x\n", result,
+ WVAL(req->rq_header, SMB_HEADER_LEN +
+ (*(req->rq_header + smb_wct) * 2)));
+
+ result = 0;
+ req->rq_iov[0].iov_base = NULL;
+ req->rq_rlen = 0;
+ if (req->rq_callback)
+ req->rq_callback(req);
+ else if (req->rq_setup_read)
+ result = req->rq_setup_read(req);
+ if (result < 0) {
+ server->rstate = SMB_RECV_DROP;
+ return result;
+ }
+
+ server->rstate = req->rq_rlen > 0 ? SMB_RECV_DATA : SMB_RECV_END;
+
+ req->rq_bytes_recvd = 0; // recvd out of the iov
+
+ VERBOSE("rlen: %d\n", req->rq_rlen);
+ if (req->rq_rlen < 0) {
+ PARANOIA("Parameters read beyond end of packet!\n");
+ server->rstate = SMB_RECV_END;
+ return -EIO;
+ }
+ return 0;
+}
+
+/*
+ * Reads the SMB data
+ */
+static int smb_recv_data(struct smb_sb_info *server, struct smb_request *req)
+{
+ int result;
+
+ result = smb_receive(server, req);
+ if (result < 0)
+ goto out;
+ if (req->rq_bytes_recvd < req->rq_rlen)
+ goto out;
+ server->rstate = SMB_RECV_END;
+out:
+ VERBOSE("result: %d\n", result);
+ return result;
+}
+
+/*
+ * Receive a transaction2 response
+ * Return: 0 if the response has been fully read
+ * 1 if there are further "fragments" to read
+ * <0 if there is an error
+ */
+static int smb_recv_trans2(struct smb_sb_info *server, struct smb_request *req)
+{
+ unsigned char *inbuf;
+ unsigned int parm_disp, parm_offset, parm_count, parm_tot;
+ unsigned int data_disp, data_offset, data_count, data_tot;
+ int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2;
+
+ VERBOSE("handling trans2\n");
+
+ inbuf = req->rq_header;
+ data_tot = WVAL(inbuf, smb_tdrcnt);
+ parm_tot = WVAL(inbuf, smb_tprcnt);
+ parm_disp = WVAL(inbuf, smb_prdisp);
+ parm_offset = WVAL(inbuf, smb_proff);
+ parm_count = WVAL(inbuf, smb_prcnt);
+ data_disp = WVAL(inbuf, smb_drdisp);
+ data_offset = WVAL(inbuf, smb_droff);
+ data_count = WVAL(inbuf, smb_drcnt);
+
+ /* Modify offset for the split header/buffer we use */
+ if (data_count || data_offset) {
+ if (unlikely(data_offset < hdrlen))
+ goto out_bad_data;
+ else
+ data_offset -= hdrlen;
+ }
+ if (parm_count || parm_offset) {
+ if (unlikely(parm_offset < hdrlen))
+ goto out_bad_parm;
+ else
+ parm_offset -= hdrlen;
+ }
+
+ if (parm_count == parm_tot && data_count == data_tot) {
+ /*
+ * This packet has all the trans2 data.
+ *
+ * We setup the request so that this will be the common
+ * case. It may be a server error to not return a
+ * response that fits.
+ */
+ VERBOSE("single trans2 response "
+ "dcnt=%u, pcnt=%u, doff=%u, poff=%u\n",
+ data_count, parm_count,
+ data_offset, parm_offset);
+ req->rq_ldata = data_count;
+ req->rq_lparm = parm_count;
+ req->rq_data = req->rq_buffer + data_offset;
+ req->rq_parm = req->rq_buffer + parm_offset;
+ if (unlikely(parm_offset + parm_count > req->rq_rlen))
+ goto out_bad_parm;
+ if (unlikely(data_offset + data_count > req->rq_rlen))
+ goto out_bad_data;
+ return 0;
+ }
+
+ VERBOSE("multi trans2 response "
+ "frag=%d, dcnt=%u, pcnt=%u, doff=%u, poff=%u\n",
+ req->rq_fragment,
+ data_count, parm_count,
+ data_offset, parm_offset);
+
+ if (!req->rq_fragment) {
+ int buf_len;
+
+ /* We got the first trans2 fragment */
+ req->rq_fragment = 1;
+ req->rq_total_data = data_tot;
+ req->rq_total_parm = parm_tot;
+ req->rq_ldata = 0;
+ req->rq_lparm = 0;
+
+ buf_len = data_tot + parm_tot;
+ if (buf_len > SMB_MAX_PACKET_SIZE)
+ goto out_too_long;
+
+ req->rq_trans2bufsize = buf_len;
+ req->rq_trans2buffer = smb_kmalloc(buf_len, GFP_NOFS);
+ if (!req->rq_trans2buffer)
+ goto out_no_mem;
+ memset(req->rq_trans2buffer, 0, buf_len);
+
+ req->rq_parm = req->rq_trans2buffer;
+ req->rq_data = req->rq_trans2buffer + parm_tot;
+ } else if (unlikely(req->rq_total_data < data_tot ||
+ req->rq_total_parm < parm_tot))
+ goto out_data_grew;
+
+ if (unlikely(parm_disp + parm_count > req->rq_total_parm ||
+ parm_offset + parm_count > req->rq_rlen))
+ goto out_bad_parm;
+ if (unlikely(data_disp + data_count > req->rq_total_data ||
+ data_offset + data_count > req->rq_rlen))
+ goto out_bad_data;
+
+ inbuf = req->rq_buffer;
+ memcpy(req->rq_parm + parm_disp, inbuf + parm_offset, parm_count);
+ memcpy(req->rq_data + data_disp, inbuf + data_offset, data_count);
+
+ req->rq_ldata += data_count;
+ req->rq_lparm += parm_count;
+
+ /*
+ * Check whether we've received all of the data. Note that
+ * we use the packet totals -- total lengths might shrink!
+ */
+ if (req->rq_ldata >= data_tot && req->rq_lparm >= parm_tot) {
+ req->rq_ldata = data_tot;
+ req->rq_lparm = parm_tot;
+ return 0;
+ }
+ return 1;
+
+out_too_long:
+ printk(KERN_ERR "smb_trans2: data/param too long, data=%u, parm=%u\n",
+ data_tot, parm_tot);
+ goto out_EIO;
+out_no_mem:
+ printk(KERN_ERR "smb_trans2: couldn't allocate data area of %d bytes\n",
+ req->rq_trans2bufsize);
+ req->rq_errno = -ENOMEM;
+ goto out;
+out_data_grew:
+ printk(KERN_ERR "smb_trans2: data/params grew!\n");
+ goto out_EIO;
+out_bad_parm:
+ printk(KERN_ERR "smb_trans2: invalid parms, disp=%u, cnt=%u, tot=%u, ofs=%u\n",
+ parm_disp, parm_count, parm_tot, parm_offset);
+ goto out_EIO;
+out_bad_data:
+ printk(KERN_ERR "smb_trans2: invalid data, disp=%u, cnt=%u, tot=%u, ofs=%u\n",
+ data_disp, data_count, data_tot, data_offset);
+out_EIO:
+ req->rq_errno = -EIO;
+out:
+ return req->rq_errno;
+}
+
+/*
+ * State machine for receiving responses. We handle the fact that we can't
+ * read the full response in one try by having states telling us how much we
+ * have read.
+ *
+ * Must be called with the server lock held (only called from smbiod).
+ *
+ * Return: <0 on error
+ */
+int smb_request_recv(struct smb_sb_info *server)
+{
+ struct smb_request *req = NULL;
+ int result = 0;
+
+ if (smb_recv_available(server) <= 0)
+ return 0;
+
+ VERBOSE("state: %d\n", server->rstate);
+ switch (server->rstate) {
+ case SMB_RECV_DROP:
+ result = smb_receive_drop(server);
+ if (result < 0)
+ break;
+ if (server->rstate == SMB_RECV_DROP)
+ break;
+ server->rstate = SMB_RECV_START;
+ /* fallthrough */
+ case SMB_RECV_START:
+ server->smb_read = 0;
+ server->rstate = SMB_RECV_HEADER;
+ /* fallthrough */
+ case SMB_RECV_HEADER:
+ result = smb_receive_header(server);
+ if (result < 0)
+ break;
+ if (server->rstate == SMB_RECV_HEADER)
+ break;
+ if (! (*(server->header + smb_flg) & SMB_FLAGS_REPLY) ) {
+ server->rstate = SMB_RECV_REQUEST;
+ break;
+ }
+ if (server->rstate != SMB_RECV_HCOMPLETE)
+ break;
+ /* fallthrough */
+ case SMB_RECV_HCOMPLETE:
+ req = find_request(server, WVAL(server->header, smb_mid));
+ if (!req)
+ break;
+ smb_init_request(server, req);
+ req->rq_rcls = *(req->rq_header + smb_rcls);
+ req->rq_err = WVAL(req->rq_header, smb_err);
+ if (server->rstate != SMB_RECV_PARAM)
+ break;
+ /* fallthrough */
+ case SMB_RECV_PARAM:
+ if (!req)
+ req = find_request(server,WVAL(server->header,smb_mid));
+ if (!req)
+ break;
+ result = smb_recv_param(server, req);
+ if (result < 0)
+ break;
+ if (server->rstate != SMB_RECV_DATA)
+ break;
+ /* fallthrough */
+ case SMB_RECV_DATA:
+ if (!req)
+ req = find_request(server,WVAL(server->header,smb_mid));
+ if (!req)
+ break;
+ result = smb_recv_data(server, req);
+ if (result < 0)
+ break;
+ break;
+
+ /* We should never be called with any of these states */
+ case SMB_RECV_END:
+ case SMB_RECV_REQUEST:
+ server->rstate = SMB_RECV_END;
+ break;
+ }
+
+ if (result < 0) {
+ /* We saw an error */
+ return result;
+ }
+
+ if (server->rstate != SMB_RECV_END)
+ return 0;
+
+ result = 0;
+ if (req->rq_trans2_command && req->rq_rcls == SUCCESS)
+ result = smb_recv_trans2(server, req);
+
+ /*
+ * Response completely read. Drop any extra bytes sent by the server.
+ * (Yes, servers sometimes add extra bytes to responses)
+ */
+ VERBOSE("smb_len: %d smb_read: %d\n",
+ server->smb_len, server->smb_read);
+ if (server->smb_read < server->smb_len)
+ smb_receive_drop(server);
+
+ server->rstate = SMB_RECV_START;
+
+ if (!result) {
+ list_del_init(&req->rq_queue);
+ req->rq_flags |= SMB_REQ_RECEIVED;
+ smb_rput(req);
+ wake_up_interruptible(&req->rq_wait);
+ }
+ return 0;
+}
diff --git a/fs/smbfs/request.h b/fs/smbfs/request.h
new file mode 100644
index 000000000000..efb21451e7c9
--- /dev/null
+++ b/fs/smbfs/request.h
@@ -0,0 +1,70 @@
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/uio.h>
+#include <linux/wait.h>
+
+struct smb_request {
+ struct list_head rq_queue; /* recvq or xmitq for the server */
+
+ atomic_t rq_count;
+
+ wait_queue_head_t rq_wait;
+ int rq_flags;
+ int rq_mid; /* multiplex ID, set by request.c */
+
+ struct smb_sb_info *rq_server;
+
+ /* header + word count + parameter words + byte count */
+ unsigned char rq_header[SMB_HEADER_LEN + 20*2 + 2];
+
+ int rq_bufsize;
+ unsigned char *rq_buffer;
+
+ /* FIXME: this is not good enough for merging IO requests. */
+ unsigned char *rq_page;
+ int rq_rsize;
+
+ int rq_resp_wct;
+ int rq_resp_bcc;
+
+ int rq_rlen;
+ int rq_bytes_recvd;
+
+ int rq_slen;
+ int rq_bytes_sent;
+
+ int rq_iovlen;
+ struct kvec rq_iov[4];
+
+ int (*rq_setup_read) (struct smb_request *);
+ void (*rq_callback) (struct smb_request *);
+
+ /* ------ trans2 stuff ------ */
+
+ u16 rq_trans2_command; /* 0 if not a trans2 request */
+ unsigned int rq_ldata;
+ unsigned char *rq_data;
+ unsigned int rq_lparm;
+ unsigned char *rq_parm;
+
+ int rq_fragment;
+ u32 rq_total_data;
+ u32 rq_total_parm;
+ int rq_trans2bufsize;
+ unsigned char *rq_trans2buffer;
+
+ /* ------ response ------ */
+
+ unsigned short rq_rcls;
+ unsigned short rq_err;
+ int rq_errno;
+};
+
+#define SMB_REQ_STATIC 0x0001 /* rq_buffer is static */
+#define SMB_REQ_NORETRY 0x0002 /* request is invalid after retry */
+
+#define SMB_REQ_TRANSMITTED 0x4000 /* all data has been sent */
+#define SMB_REQ_RECEIVED 0x8000 /* reply received, smbiod is done */
+
+#define xSMB_REQ_NOREPLY 0x0004 /* we don't want the reply (if any) */
+#define xSMB_REQ_NORECEIVER 0x0008 /* caller doesn't wait for response */
diff --git a/fs/smbfs/smb_debug.h b/fs/smbfs/smb_debug.h
new file mode 100644
index 000000000000..734972b92694
--- /dev/null
+++ b/fs/smbfs/smb_debug.h
@@ -0,0 +1,34 @@
+/*
+ * Defines some debug macros for smbfs.
+ */
+
+/* This makes a dentry parent/child name pair. Useful for debugging printk's */
+#define DENTRY_PATH(dentry) \
+ (dentry)->d_parent->d_name.name,(dentry)->d_name.name
+
+/*
+ * safety checks that should never happen ???
+ * these are normally enabled.
+ */
+#ifdef SMBFS_PARANOIA
+# define PARANOIA(f, a...) printk(KERN_NOTICE "%s: " f, __FUNCTION__ , ## a)
+#else
+# define PARANOIA(f, a...) do { ; } while(0)
+#endif
+
+/* lots of debug messages */
+#ifdef SMBFS_DEBUG_VERBOSE
+# define VERBOSE(f, a...) printk(KERN_DEBUG "%s: " f, __FUNCTION__ , ## a)
+#else
+# define VERBOSE(f, a...) do { ; } while(0)
+#endif
+
+/*
+ * "normal" debug messages, but not with a normal DEBUG define ... way
+ * too common name.
+ */
+#ifdef SMBFS_DEBUG
+#define DEBUG1(f, a...) printk(KERN_DEBUG "%s: " f, __FUNCTION__ , ## a)
+#else
+#define DEBUG1(f, a...) do { ; } while(0)
+#endif
diff --git a/fs/smbfs/smbiod.c b/fs/smbfs/smbiod.c
new file mode 100644
index 000000000000..481a97a423fa
--- /dev/null
+++ b/fs/smbfs/smbiod.c
@@ -0,0 +1,341 @@
+/*
+ * smbiod.c
+ *
+ * Copyright (C) 2000, Charles Loep / Corel Corp.
+ * Copyright (C) 2001, Urban Widmark
+ */
+
+#include <linux/config.h>
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/file.h>
+#include <linux/dcache.h>
+#include <linux/smp_lock.h>
+#include <linux/module.h>
+#include <linux/net.h>
+#include <net/ip.h>
+
+#include <linux/smb_fs.h>
+#include <linux/smbno.h>
+#include <linux/smb_mount.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include "smb_debug.h"
+#include "request.h"
+#include "proto.h"
+
+enum smbiod_state {
+ SMBIOD_DEAD,
+ SMBIOD_STARTING,
+ SMBIOD_RUNNING,
+};
+
+static enum smbiod_state smbiod_state = SMBIOD_DEAD;
+static pid_t smbiod_pid;
+static DECLARE_WAIT_QUEUE_HEAD(smbiod_wait);
+static LIST_HEAD(smb_servers);
+static DEFINE_SPINLOCK(servers_lock);
+
+#define SMBIOD_DATA_READY (1<<0)
+static long smbiod_flags;
+
+static int smbiod(void *);
+static int smbiod_start(void);
+
+/*
+ * called when there's work for us to do
+ */
+void smbiod_wake_up(void)
+{
+ if (smbiod_state == SMBIOD_DEAD)
+ return;
+ set_bit(SMBIOD_DATA_READY, &smbiod_flags);
+ wake_up_interruptible(&smbiod_wait);
+}
+
+/*
+ * start smbiod if none is running
+ */
+static int smbiod_start(void)
+{
+ pid_t pid;
+ if (smbiod_state != SMBIOD_DEAD)
+ return 0;
+ smbiod_state = SMBIOD_STARTING;
+ __module_get(THIS_MODULE);
+ spin_unlock(&servers_lock);
+ pid = kernel_thread(smbiod, NULL, 0);
+ if (pid < 0)
+ module_put(THIS_MODULE);
+
+ spin_lock(&servers_lock);
+ smbiod_state = pid < 0 ? SMBIOD_DEAD : SMBIOD_RUNNING;
+ smbiod_pid = pid;
+ return pid;
+}
+
+/*
+ * register a server & start smbiod if necessary
+ */
+int smbiod_register_server(struct smb_sb_info *server)
+{
+ int ret;
+ spin_lock(&servers_lock);
+ list_add(&server->entry, &smb_servers);
+ VERBOSE("%p\n", server);
+ ret = smbiod_start();
+ spin_unlock(&servers_lock);
+ return ret;
+}
+
+/*
+ * Unregister a server
+ * Must be called with the server lock held.
+ */
+void smbiod_unregister_server(struct smb_sb_info *server)
+{
+ spin_lock(&servers_lock);
+ list_del_init(&server->entry);
+ VERBOSE("%p\n", server);
+ spin_unlock(&servers_lock);
+
+ smbiod_wake_up();
+ smbiod_flush(server);
+}
+
+void smbiod_flush(struct smb_sb_info *server)
+{
+ struct list_head *tmp, *n;
+ struct smb_request *req;
+
+ list_for_each_safe(tmp, n, &server->xmitq) {
+ req = list_entry(tmp, struct smb_request, rq_queue);
+ req->rq_errno = -EIO;
+ list_del_init(&req->rq_queue);
+ smb_rput(req);
+ wake_up_interruptible(&req->rq_wait);
+ }
+ list_for_each_safe(tmp, n, &server->recvq) {
+ req = list_entry(tmp, struct smb_request, rq_queue);
+ req->rq_errno = -EIO;
+ list_del_init(&req->rq_queue);
+ smb_rput(req);
+ wake_up_interruptible(&req->rq_wait);
+ }
+}
+
+/*
+ * Wake up smbmount and make it reconnect to the server.
+ * This must be called with the server locked.
+ *
+ * FIXME: add smbconnect version to this
+ */
+int smbiod_retry(struct smb_sb_info *server)
+{
+ struct list_head *head;
+ struct smb_request *req;
+ pid_t pid = server->conn_pid;
+ int result = 0;
+
+ VERBOSE("state: %d\n", server->state);
+ if (server->state == CONN_VALID || server->state == CONN_RETRYING)
+ goto out;
+
+ smb_invalidate_inodes(server);
+
+ /*
+ * Some requests are meaningless after a retry, so we abort them.
+ * One example are all requests using 'fileid' since the files are
+ * closed on retry.
+ */
+ head = server->xmitq.next;
+ while (head != &server->xmitq) {
+ req = list_entry(head, struct smb_request, rq_queue);
+ head = head->next;
+
+ req->rq_bytes_sent = 0;
+ if (req->rq_flags & SMB_REQ_NORETRY) {
+ VERBOSE("aborting request %p on xmitq\n", req);
+ req->rq_errno = -EIO;
+ list_del_init(&req->rq_queue);
+ smb_rput(req);
+ wake_up_interruptible(&req->rq_wait);
+ }
+ }
+
+ /*
+ * FIXME: test the code for retrying request we already sent
+ */
+ head = server->recvq.next;
+ while (head != &server->recvq) {
+ req = list_entry(head, struct smb_request, rq_queue);
+ head = head->next;
+#if 0
+ if (req->rq_flags & SMB_REQ_RETRY) {
+ /* must move the request to the xmitq */
+ VERBOSE("retrying request %p on recvq\n", req);
+ list_del(&req->rq_queue);
+ list_add(&req->rq_queue, &server->xmitq);
+ continue;
+ }
+#endif
+
+ VERBOSE("aborting request %p on recvq\n", req);
+ /* req->rq_rcls = ???; */ /* FIXME: set smb error code too? */
+ req->rq_errno = -EIO;
+ list_del_init(&req->rq_queue);
+ smb_rput(req);
+ wake_up_interruptible(&req->rq_wait);
+ }
+
+ smb_close_socket(server);
+
+ if (pid == 0) {
+ /* FIXME: this is fatal, umount? */
+ printk(KERN_ERR "smb_retry: no connection process\n");
+ server->state = CONN_RETRIED;
+ goto out;
+ }
+
+ /*
+ * Change state so that only one retry per server will be started.
+ */
+ server->state = CONN_RETRYING;
+
+ /*
+ * Note: use the "priv" flag, as a user process may need to reconnect.
+ */
+ result = kill_proc(pid, SIGUSR1, 1);
+ if (result) {
+ /* FIXME: this is most likely fatal, umount? */
+ printk(KERN_ERR "smb_retry: signal failed [%d]\n", result);
+ goto out;
+ }
+ VERBOSE("signalled pid %d\n", pid);
+
+ /* FIXME: The retried requests should perhaps get a "time boost". */
+
+out:
+ return result;
+}
+
+/*
+ * Currently handles lockingX packets.
+ */
+static void smbiod_handle_request(struct smb_sb_info *server)
+{
+ PARANOIA("smbiod got a request ... and we don't implement oplocks!\n");
+ server->rstate = SMB_RECV_DROP;
+}
+
+/*
+ * Do some IO for one server.
+ */
+static void smbiod_doio(struct smb_sb_info *server)
+{
+ int result;
+ int maxwork = 7;
+
+ if (server->state != CONN_VALID)
+ goto out;
+
+ do {
+ result = smb_request_recv(server);
+ if (result < 0) {
+ server->state = CONN_INVALID;
+ smbiod_retry(server);
+ goto out; /* reconnecting is slow */
+ } else if (server->rstate == SMB_RECV_REQUEST)
+ smbiod_handle_request(server);
+ } while (result > 0 && maxwork-- > 0);
+
+ /*
+ * If there is more to read then we want to be sure to wake up again.
+ */
+ if (server->state != CONN_VALID)
+ goto out;
+ if (smb_recv_available(server) > 0)
+ set_bit(SMBIOD_DATA_READY, &smbiod_flags);
+
+ do {
+ result = smb_request_send_server(server);
+ if (result < 0) {
+ server->state = CONN_INVALID;
+ smbiod_retry(server);
+ goto out; /* reconnecting is slow */
+ }
+ } while (result > 0);
+
+ /*
+ * If the last request was not sent out we want to wake up again.
+ */
+ if (!list_empty(&server->xmitq))
+ set_bit(SMBIOD_DATA_READY, &smbiod_flags);
+
+out:
+ return;
+}
+
+/*
+ * smbiod kernel thread
+ */
+static int smbiod(void *unused)
+{
+ daemonize("smbiod");
+
+ allow_signal(SIGKILL);
+
+ VERBOSE("SMB Kernel thread starting (%d) ...\n", current->pid);
+
+ for (;;) {
+ struct smb_sb_info *server;
+ struct list_head *pos, *n;
+
+ /* FIXME: Use poll? */
+ wait_event_interruptible(smbiod_wait,
+ test_bit(SMBIOD_DATA_READY, &smbiod_flags));
+ if (signal_pending(current)) {
+ spin_lock(&servers_lock);
+ smbiod_state = SMBIOD_DEAD;
+ spin_unlock(&servers_lock);
+ break;
+ }
+
+ clear_bit(SMBIOD_DATA_READY, &smbiod_flags);
+
+ spin_lock(&servers_lock);
+ if (list_empty(&smb_servers)) {
+ smbiod_state = SMBIOD_DEAD;
+ spin_unlock(&servers_lock);
+ break;
+ }
+
+ list_for_each_safe(pos, n, &smb_servers) {
+ server = list_entry(pos, struct smb_sb_info, entry);
+ VERBOSE("checking server %p\n", server);
+
+ if (server->state == CONN_VALID) {
+ spin_unlock(&servers_lock);
+
+ smb_lock_server(server);
+ smbiod_doio(server);
+ smb_unlock_server(server);
+
+ spin_lock(&servers_lock);
+ }
+ }
+ spin_unlock(&servers_lock);
+ }
+
+ VERBOSE("SMB Kernel thread exiting (%d) ...\n", current->pid);
+ module_put_and_exit(0);
+}
diff --git a/fs/smbfs/sock.c b/fs/smbfs/sock.c
new file mode 100644
index 000000000000..93f3cd22a2e9
--- /dev/null
+++ b/fs/smbfs/sock.c
@@ -0,0 +1,388 @@
+/*
+ * sock.c
+ *
+ * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
+ * Copyright (C) 1997 by Volker Lendecke
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/socket.h>
+#include <linux/fcntl.h>
+#include <linux/file.h>
+#include <linux/in.h>
+#include <linux/net.h>
+#include <linux/tcp.h>
+#include <linux/mm.h>
+#include <linux/netdevice.h>
+#include <linux/smp_lock.h>
+#include <linux/workqueue.h>
+#include <net/scm.h>
+#include <net/ip.h>
+
+#include <linux/smb_fs.h>
+#include <linux/smb.h>
+#include <linux/smbno.h>
+
+#include <asm/uaccess.h>
+#include <asm/ioctls.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+#include "request.h"
+
+
+static int
+_recvfrom(struct socket *socket, unsigned char *ubuf, int size, unsigned flags)
+{
+ struct kvec iov = {ubuf, size};
+ struct msghdr msg = {.msg_flags = flags};
+ msg.msg_flags |= MSG_DONTWAIT | MSG_NOSIGNAL;
+ return kernel_recvmsg(socket, &msg, &iov, 1, size, msg.msg_flags);
+}
+
+/*
+ * Return the server this socket belongs to
+ */
+static struct smb_sb_info *
+server_from_socket(struct socket *socket)
+{
+ return socket->sk->sk_user_data;
+}
+
+/*
+ * Called when there is data on the socket.
+ */
+void
+smb_data_ready(struct sock *sk, int len)
+{
+ struct smb_sb_info *server = server_from_socket(sk->sk_socket);
+ void (*data_ready)(struct sock *, int) = server->data_ready;
+
+ data_ready(sk, len);
+ VERBOSE("(%p, %d)\n", sk, len);
+ smbiod_wake_up();
+}
+
+int
+smb_valid_socket(struct inode * inode)
+{
+ return (inode && S_ISSOCK(inode->i_mode) &&
+ SOCKET_I(inode)->type == SOCK_STREAM);
+}
+
+static struct socket *
+server_sock(struct smb_sb_info *server)
+{
+ struct file *file;
+
+ if (server && (file = server->sock_file))
+ {
+#ifdef SMBFS_PARANOIA
+ if (!smb_valid_socket(file->f_dentry->d_inode))
+ PARANOIA("bad socket!\n");
+#endif
+ return SOCKET_I(file->f_dentry->d_inode);
+ }
+ return NULL;
+}
+
+void
+smb_close_socket(struct smb_sb_info *server)
+{
+ struct file * file = server->sock_file;
+
+ if (file) {
+ struct socket *sock = server_sock(server);
+
+ VERBOSE("closing socket %p\n", sock);
+ sock->sk->sk_data_ready = server->data_ready;
+ server->sock_file = NULL;
+ fput(file);
+ }
+}
+
+static int
+smb_get_length(struct socket *socket, unsigned char *header)
+{
+ int result;
+
+ result = _recvfrom(socket, header, 4, MSG_PEEK);
+ if (result == -EAGAIN)
+ return -ENODATA;
+ if (result < 0) {
+ PARANOIA("recv error = %d\n", -result);
+ return result;
+ }
+ if (result < 4)
+ return -ENODATA;
+
+ switch (header[0]) {
+ case 0x00:
+ case 0x82:
+ break;
+
+ case 0x85:
+ DEBUG1("Got SESSION KEEP ALIVE\n");
+ _recvfrom(socket, header, 4, 0); /* read away */
+ return -ENODATA;
+
+ default:
+ PARANOIA("Invalid NBT packet, code=%x\n", header[0]);
+ return -EIO;
+ }
+
+ /* The length in the RFC NB header is the raw data length */
+ return smb_len(header);
+}
+
+int
+smb_recv_available(struct smb_sb_info *server)
+{
+ mm_segment_t oldfs;
+ int avail, err;
+ struct socket *sock = server_sock(server);
+
+ oldfs = get_fs();
+ set_fs(get_ds());
+ err = sock->ops->ioctl(sock, SIOCINQ, (unsigned long) &avail);
+ set_fs(oldfs);
+ return (err >= 0) ? avail : err;
+}
+
+/*
+ * Adjust the kvec to move on 'n' bytes (from nfs/sunrpc)
+ */
+static int
+smb_move_iov(struct kvec **data, size_t *num, struct kvec *vec, unsigned amount)
+{
+ struct kvec *iv = *data;
+ int i;
+ int len;
+
+ /*
+ * Eat any sent kvecs
+ */
+ while (iv->iov_len <= amount) {
+ amount -= iv->iov_len;
+ iv++;
+ (*num)--;
+ }
+
+ /*
+ * And chew down the partial one
+ */
+ vec[0].iov_len = iv->iov_len-amount;
+ vec[0].iov_base =((unsigned char *)iv->iov_base)+amount;
+ iv++;
+
+ len = vec[0].iov_len;
+
+ /*
+ * And copy any others
+ */
+ for (i = 1; i < *num; i++) {
+ vec[i] = *iv++;
+ len += vec[i].iov_len;
+ }
+
+ *data = vec;
+ return len;
+}
+
+/*
+ * smb_receive_header
+ * Only called by the smbiod thread.
+ */
+int
+smb_receive_header(struct smb_sb_info *server)
+{
+ struct socket *sock;
+ int result = 0;
+ unsigned char peek_buf[4];
+
+ result = -EIO;
+ sock = server_sock(server);
+ if (!sock)
+ goto out;
+ if (sock->sk->sk_state != TCP_ESTABLISHED)
+ goto out;
+
+ if (!server->smb_read) {
+ result = smb_get_length(sock, peek_buf);
+ if (result < 0) {
+ if (result == -ENODATA)
+ result = 0;
+ goto out;
+ }
+ server->smb_len = result + 4;
+
+ if (server->smb_len < SMB_HEADER_LEN) {
+ PARANOIA("short packet: %d\n", result);
+ server->rstate = SMB_RECV_DROP;
+ result = -EIO;
+ goto out;
+ }
+ if (server->smb_len > SMB_MAX_PACKET_SIZE) {
+ PARANOIA("long packet: %d\n", result);
+ server->rstate = SMB_RECV_DROP;
+ result = -EIO;
+ goto out;
+ }
+ }
+
+ result = _recvfrom(sock, server->header + server->smb_read,
+ SMB_HEADER_LEN - server->smb_read, 0);
+ VERBOSE("_recvfrom: %d\n", result);
+ if (result < 0) {
+ VERBOSE("receive error: %d\n", result);
+ goto out;
+ }
+ server->smb_read += result;
+
+ if (server->smb_read == SMB_HEADER_LEN)
+ server->rstate = SMB_RECV_HCOMPLETE;
+out:
+ return result;
+}
+
+static char drop_buffer[PAGE_SIZE];
+
+/*
+ * smb_receive_drop - read and throw away the data
+ * Only called by the smbiod thread.
+ *
+ * FIXME: we are in the kernel, could we just tell the socket that we want
+ * to drop stuff from the buffer?
+ */
+int
+smb_receive_drop(struct smb_sb_info *server)
+{
+ struct socket *sock;
+ unsigned int flags;
+ struct kvec iov;
+ struct msghdr msg;
+ int rlen = smb_len(server->header) - server->smb_read + 4;
+ int result = -EIO;
+
+ if (rlen > PAGE_SIZE)
+ rlen = PAGE_SIZE;
+
+ sock = server_sock(server);
+ if (!sock)
+ goto out;
+ if (sock->sk->sk_state != TCP_ESTABLISHED)
+ goto out;
+
+ flags = MSG_DONTWAIT | MSG_NOSIGNAL;
+ iov.iov_base = drop_buffer;
+ iov.iov_len = PAGE_SIZE;
+ msg.msg_flags = flags;
+ msg.msg_name = NULL;
+ msg.msg_namelen = 0;
+ msg.msg_control = NULL;
+
+ result = kernel_recvmsg(sock, &msg, &iov, 1, rlen, flags);
+
+ VERBOSE("read: %d\n", result);
+ if (result < 0) {
+ VERBOSE("receive error: %d\n", result);
+ goto out;
+ }
+ server->smb_read += result;
+
+ if (server->smb_read >= server->smb_len)
+ server->rstate = SMB_RECV_END;
+
+out:
+ return result;
+}
+
+/*
+ * smb_receive
+ * Only called by the smbiod thread.
+ */
+int
+smb_receive(struct smb_sb_info *server, struct smb_request *req)
+{
+ struct socket *sock;
+ unsigned int flags;
+ struct kvec iov[4];
+ struct kvec *p = req->rq_iov;
+ size_t num = req->rq_iovlen;
+ struct msghdr msg;
+ int rlen;
+ int result = -EIO;
+
+ sock = server_sock(server);
+ if (!sock)
+ goto out;
+ if (sock->sk->sk_state != TCP_ESTABLISHED)
+ goto out;
+
+ flags = MSG_DONTWAIT | MSG_NOSIGNAL;
+ msg.msg_flags = flags;
+ msg.msg_name = NULL;
+ msg.msg_namelen = 0;
+ msg.msg_control = NULL;
+
+ /* Dont repeat bytes and count available bufferspace */
+ rlen = smb_move_iov(&p, &num, iov, req->rq_bytes_recvd);
+ if (req->rq_rlen < rlen)
+ rlen = req->rq_rlen;
+
+ result = kernel_recvmsg(sock, &msg, p, num, rlen, flags);
+
+ VERBOSE("read: %d\n", result);
+ if (result < 0) {
+ VERBOSE("receive error: %d\n", result);
+ goto out;
+ }
+ req->rq_bytes_recvd += result;
+ server->smb_read += result;
+
+out:
+ return result;
+}
+
+/*
+ * Try to send a SMB request. This may return after sending only parts of the
+ * request. SMB_REQ_TRANSMITTED will be set if a request was fully sent.
+ *
+ * Parts of this was taken from xprt_sendmsg from net/sunrpc/xprt.c
+ */
+int
+smb_send_request(struct smb_request *req)
+{
+ struct smb_sb_info *server = req->rq_server;
+ struct socket *sock;
+ struct msghdr msg = {.msg_flags = MSG_NOSIGNAL | MSG_DONTWAIT};
+ int slen = req->rq_slen - req->rq_bytes_sent;
+ int result = -EIO;
+ struct kvec iov[4];
+ struct kvec *p = req->rq_iov;
+ size_t num = req->rq_iovlen;
+
+ sock = server_sock(server);
+ if (!sock)
+ goto out;
+ if (sock->sk->sk_state != TCP_ESTABLISHED)
+ goto out;
+
+ /* Dont repeat bytes */
+ if (req->rq_bytes_sent)
+ smb_move_iov(&p, &num, iov, req->rq_bytes_sent);
+
+ result = kernel_sendmsg(sock, &msg, p, num, slen);
+
+ if (result >= 0) {
+ req->rq_bytes_sent += result;
+ if (req->rq_bytes_sent >= req->rq_slen)
+ req->rq_flags |= SMB_REQ_TRANSMITTED;
+ }
+out:
+ return result;
+}
diff --git a/fs/smbfs/symlink.c b/fs/smbfs/symlink.c
new file mode 100644
index 000000000000..8b069e06433d
--- /dev/null
+++ b/fs/smbfs/symlink.c
@@ -0,0 +1,70 @@
+/*
+ * symlink.c
+ *
+ * Copyright (C) 2002 by John Newbigin
+ *
+ * Please add a note about your changes to smbfs in the ChangeLog file.
+ */
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/smp_lock.h>
+#include <linux/net.h>
+#include <linux/namei.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/smbno.h>
+#include <linux/smb_fs.h>
+
+#include "smb_debug.h"
+#include "proto.h"
+
+int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname)
+{
+ DEBUG1("create symlink %s -> %s/%s\n", oldname, DENTRY_PATH(dentry));
+
+ return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname);
+}
+
+static int smb_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ char *link = __getname();
+ DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry));
+
+ if (!link) {
+ link = ERR_PTR(-ENOMEM);
+ } else {
+ int len = smb_proc_read_link(server_from_dentry(dentry),
+ dentry, link, PATH_MAX - 1);
+ if (len < 0) {
+ putname(link);
+ link = ERR_PTR(len);
+ } else {
+ link[len] = 0;
+ }
+ }
+ nd_set_link(nd, link);
+ return 0;
+}
+
+static void smb_put_link(struct dentry *dentry, struct nameidata *nd)
+{
+ char *s = nd_get_link(nd);
+ if (!IS_ERR(s))
+ putname(s);
+}
+
+struct inode_operations smb_link_inode_operations =
+{
+ .readlink = generic_readlink,
+ .follow_link = smb_follow_link,
+ .put_link = smb_put_link,
+};