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-rw-r--r--fs/cifs/cifs_debug.c41
-rw-r--r--fs/cifs/cifs_spnego.c6
-rw-r--r--fs/cifs/cifs_unicode.c3
-rw-r--r--fs/cifs/cifsfs.c7
-rw-r--r--fs/cifs/cifssmb.c11
-rw-r--r--fs/cifs/dir.c2
-rw-r--r--fs/cifs/inode.c14
-rw-r--r--fs/cifs/link.c4
-rw-r--r--fs/cifs/misc.c8
-rw-r--r--fs/cifs/readdir.c11
-rw-r--r--fs/cifs/sess.c6
-rw-r--r--fs/cifs/smb2inode.c2
-rw-r--r--fs/cifs/smb2misc.c7
-rw-r--r--fs/cifs/smb2ops.c36
-rw-r--r--fs/cifs/smb2pdu.c27
15 files changed, 141 insertions, 44 deletions
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 3d03e48a9213..98fc77dd7b45 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -123,25 +123,41 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
seq_printf(m, "Features:");
#ifdef CONFIG_CIFS_DFS_UPCALL
- seq_printf(m, " dfs");
+ seq_printf(m, " DFS");
#endif
#ifdef CONFIG_CIFS_FSCACHE
- seq_printf(m, " fscache");
+ seq_printf(m, ",FSCACHE");
+#endif
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ seq_printf(m, ",SMB_DIRECT");
+#endif
+#ifdef CONFIG_CIFS_STATS2
+ seq_printf(m, ",STATS2");
+#elif defined(CONFIG_CIFS_STATS)
+ seq_printf(m, ",STATS");
+#endif
+#ifdef CONFIG_CIFS_DEBUG2
+ seq_printf(m, ",DEBUG2");
+#elif defined(CONFIG_CIFS_DEBUG)
+ seq_printf(m, ",DEBUG");
+#endif
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+ seq_printf(m, ",ALLOW_INSECURE_LEGACY");
#endif
#ifdef CONFIG_CIFS_WEAK_PW_HASH
- seq_printf(m, " lanman");
+ seq_printf(m, ",WEAK_PW_HASH");
#endif
#ifdef CONFIG_CIFS_POSIX
- seq_printf(m, " posix");
+ seq_printf(m, ",CIFS_POSIX");
#endif
#ifdef CONFIG_CIFS_UPCALL
- seq_printf(m, " spnego");
+ seq_printf(m, ",UPCALL(SPNEGO)");
#endif
#ifdef CONFIG_CIFS_XATTR
- seq_printf(m, " xattr");
+ seq_printf(m, ",XATTR");
#endif
#ifdef CONFIG_CIFS_ACL
- seq_printf(m, " acl");
+ seq_printf(m, ",ACL");
#endif
seq_putc(m, '\n');
seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
@@ -268,6 +284,13 @@ static ssize_t cifs_stats_proc_write(struct file *file,
atomic_set(&totBufAllocCount, 0);
atomic_set(&totSmBufAllocCount, 0);
#endif /* CONFIG_CIFS_STATS2 */
+ atomic_set(&tcpSesReconnectCount, 0);
+ atomic_set(&tconInfoReconnectCount, 0);
+
+ spin_lock(&GlobalMid_Lock);
+ GlobalMaxActiveXid = 0;
+ GlobalCurrentXid = 0;
+ spin_unlock(&GlobalMid_Lock);
spin_lock(&cifs_tcp_ses_lock);
list_for_each(tmp1, &cifs_tcp_ses_list) {
server = list_entry(tmp1, struct TCP_Server_Info,
@@ -280,6 +303,10 @@ static ssize_t cifs_stats_proc_write(struct file *file,
struct cifs_tcon,
tcon_list);
atomic_set(&tcon->num_smbs_sent, 0);
+ spin_lock(&tcon->stat_lock);
+ tcon->bytes_read = 0;
+ tcon->bytes_written = 0;
+ spin_unlock(&tcon->stat_lock);
if (server->ops->clear_stats)
server->ops->clear_stats(tcon);
}
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index b611fc2e8984..7f01c6e60791 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -147,8 +147,10 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
sprintf(dp, ";sec=krb5");
else if (server->sec_mskerberos)
sprintf(dp, ";sec=mskrb5");
- else
- goto out;
+ else {
+ cifs_dbg(VFS, "unknown or missing server auth type, use krb5\n");
+ sprintf(dp, ";sec=krb5");
+ }
dp = description + strlen(description);
sprintf(dp, ";uid=0x%x",
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index a0b3e7d1be48..211ac472cb9d 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -101,9 +101,6 @@ convert_sfm_char(const __u16 src_char, char *target)
case SFM_LESSTHAN:
*target = '<';
break;
- case SFM_SLASH:
- *target = '\\';
- break;
case SFM_SPACE:
*target = ' ';
break;
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 87658f63b374..be84d49f2406 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -927,8 +927,8 @@ static int cifs_clone_file_range(struct file *src_file, loff_t off,
struct inode *src_inode = file_inode(src_file);
struct inode *target_inode = file_inode(dst_file);
struct cifsFileInfo *smb_file_src = src_file->private_data;
- struct cifsFileInfo *smb_file_target = dst_file->private_data;
- struct cifs_tcon *target_tcon = tlink_tcon(smb_file_target->tlink);
+ struct cifsFileInfo *smb_file_target;
+ struct cifs_tcon *target_tcon;
unsigned int xid;
int rc;
@@ -942,6 +942,9 @@ static int cifs_clone_file_range(struct file *src_file, loff_t off,
goto out;
}
+ smb_file_target = dst_file->private_data;
+ target_tcon = tlink_tcon(smb_file_target->tlink);
+
/*
* Note: cifs case is easier than btrfs since server responsible for
* checks for proper open modes and file type and if it wants
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 8407b07428a6..741b83c59a30 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -577,10 +577,15 @@ CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses)
}
count = 0;
+ /*
+ * We know that all the name entries in the protocols array
+ * are short (< 16 bytes anyway) and are NUL terminated.
+ */
for (i = 0; i < CIFS_NUM_PROT; i++) {
- strncpy(pSMB->DialectsArray+count, protocols[i].name, 16);
- count += strlen(protocols[i].name) + 1;
- /* null at end of source and target buffers anyway */
+ size_t len = strlen(protocols[i].name) + 1;
+
+ memcpy(pSMB->DialectsArray+count, protocols[i].name, len);
+ count += len;
}
inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 331ddd07e505..e98e24eaa6a8 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -163,7 +163,7 @@ cifs_bp_rename_retry:
cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath);
memcpy(full_path+dfsplen+1, cifs_sb->prepath, pplen-1);
- full_path[dfsplen] = '\\';
+ full_path[dfsplen] = dirsep;
for (i = 0; i < pplen-1; i++)
if (full_path[dfsplen+1+i] == '/')
full_path[dfsplen+1+i] = CIFS_DIR_SEP(cifs_sb);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 24c19eb94fa3..57c938ffeb6e 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -704,7 +704,7 @@ cgfi_exit:
/* Simple function to return a 64 bit hash of string. Rarely called */
static __u64 simple_hashstr(const char *str)
{
- const __u64 hash_mult = 1125899906842597L; /* a big enough prime */
+ const __u64 hash_mult = 1125899906842597ULL; /* a big enough prime */
__u64 hash = 0;
while (*str)
@@ -768,7 +768,15 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
} else if (rc == -EREMOTE) {
cifs_create_dfs_fattr(&fattr, sb);
rc = 0;
- } else if (rc == -EACCES && backup_cred(cifs_sb)) {
+ } else if ((rc == -EACCES) && backup_cred(cifs_sb) &&
+ (strcmp(server->vals->version_string, SMB1_VERSION_STRING)
+ == 0)) {
+ /*
+ * For SMB2 and later the backup intent flag is already
+ * sent if needed on open and there is no path based
+ * FindFirst operation to use to retry with
+ */
+
srchinf = kzalloc(sizeof(struct cifs_search_info),
GFP_KERNEL);
if (srchinf == NULL) {
@@ -1116,6 +1124,8 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
if (!server->ops->set_file_info)
return -ENOSYS;
+ info_buf.Pad = 0;
+
if (attrs->ia_valid & ATTR_ATIME) {
set_time = true;
info_buf.LastAccessTime =
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index d031af8d3d4d..38d26cbcad07 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -419,7 +419,7 @@ smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_io_parms io_parms;
int buf_type = CIFS_NO_BUFFER;
__le16 *utf16_path;
- __u8 oplock = SMB2_OPLOCK_LEVEL_II;
+ __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct smb2_file_all_info *pfile_info = NULL;
oparms.tcon = tcon;
@@ -481,7 +481,7 @@ smb3_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_io_parms io_parms;
int create_options = CREATE_NOT_DIR;
__le16 *utf16_path;
- __u8 oplock = SMB2_OPLOCK_LEVEL_EXCLUSIVE;
+ __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct kvec iov[2];
if (backup_cred(cifs_sb))
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 323d8e34abde..50559a80acf8 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -406,9 +406,17 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
(struct smb_com_transaction_change_notify_rsp *)buf;
struct file_notify_information *pnotify;
__u32 data_offset = 0;
+ size_t len = srv->total_read - sizeof(pSMBr->hdr.smb_buf_length);
+
if (get_bcc(buf) > sizeof(struct file_notify_information)) {
data_offset = le32_to_cpu(pSMBr->DataOffset);
+ if (data_offset >
+ len - sizeof(struct file_notify_information)) {
+ cifs_dbg(FYI, "invalid data_offset %u\n",
+ data_offset);
+ return true;
+ }
pnotify = (struct file_notify_information *)
((char *)&pSMBr->hdr.Protocol + data_offset);
cifs_dbg(FYI, "dnotify on %s Action: 0x%x\n",
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 791aecb7c1ac..3ce6331a1101 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -376,8 +376,15 @@ static char *nxt_dir_entry(char *old_entry, char *end_of_smb, int level)
new_entry = old_entry + sizeof(FIND_FILE_STANDARD_INFO) +
pfData->FileNameLength;
- } else
- new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset);
+ } else {
+ u32 next_offset = le32_to_cpu(pDirInfo->NextEntryOffset);
+
+ if (old_entry + next_offset < old_entry) {
+ cifs_dbg(VFS, "invalid offset %u\n", next_offset);
+ return NULL;
+ }
+ new_entry = old_entry + next_offset;
+ }
cifs_dbg(FYI, "new entry %p old entry %p\n", new_entry, old_entry);
/* validate that new_entry is not past end of SMB */
if (new_entry >= end_of_smb) {
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index c3db2a882aee..bb208076cb71 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -398,6 +398,12 @@ int build_ntlmssp_auth_blob(unsigned char **pbuffer,
goto setup_ntlmv2_ret;
}
*pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL);
+ if (!*pbuffer) {
+ rc = -ENOMEM;
+ cifs_dbg(VFS, "Error %d during NTLMSSP allocation\n", rc);
+ *buflen = 0;
+ goto setup_ntlmv2_ret;
+ }
sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer;
memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 1238cd3552f9..0267d8cbc996 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -267,7 +267,7 @@ smb2_set_file_info(struct inode *inode, const char *full_path,
int rc;
if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
- (buf->LastWriteTime == 0) && (buf->ChangeTime) &&
+ (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
(buf->Attributes == 0))
return 0; /* would be a no op, no sense sending this */
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index 967dfe656ced..e96a74da756f 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -209,6 +209,13 @@ smb2_check_message(char *buf, unsigned int length, struct TCP_Server_Info *srvr)
return 0;
/*
+ * Some windows servers (win2016) will pad also the final
+ * PDU in a compound to 8 bytes.
+ */
+ if (((clc_len + 7) & ~7) == len)
+ return 0;
+
+ /*
* MacOS server pads after SMB2.1 write response with 3 bytes
* of junk. Other servers match RFC1001 len to actual
* SMB2/SMB3 frame length (header + smb2 response specific data)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 812e4884c392..08c1c86c2ad9 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -894,6 +894,13 @@ smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
}
+/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
+#define GMT_TOKEN_SIZE 50
+
+/*
+ * Input buffer contains (empty) struct smb_snapshot array with size filled in
+ * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
+ */
static int
smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile, void __user *ioc_buf)
@@ -922,14 +929,27 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
kfree(retbuf);
return rc;
}
- if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
- rc = -ERANGE;
- kfree(retbuf);
- return rc;
- }
- if (ret_data_len > snapshot_in.snapshot_array_size)
- ret_data_len = snapshot_in.snapshot_array_size;
+ /*
+ * Check for min size, ie not large enough to fit even one GMT
+ * token (snapshot). On the first ioctl some users may pass in
+ * smaller size (or zero) to simply get the size of the array
+ * so the user space caller can allocate sufficient memory
+ * and retry the ioctl again with larger array size sufficient
+ * to hold all of the snapshot GMT tokens on the second try.
+ */
+ if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
+ ret_data_len = sizeof(struct smb_snapshot_array);
+
+ /*
+ * We return struct SRV_SNAPSHOT_ARRAY, followed by
+ * the snapshot array (of 50 byte GMT tokens) each
+ * representing an available previous version of the data
+ */
+ if (ret_data_len > (snapshot_in.snapshot_array_size +
+ sizeof(struct smb_snapshot_array)))
+ ret_data_len = snapshot_in.snapshot_array_size +
+ sizeof(struct smb_snapshot_array);
if (copy_to_user(ioc_buf, retbuf, ret_data_len))
rc = -EFAULT;
@@ -969,7 +989,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
}
srch_inf->entries_in_buffer = 0;
- srch_inf->index_of_last_entry = 0;
+ srch_inf->index_of_last_entry = 2;
rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
fid->volatile_fid, 0, srch_inf);
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 4ded64b8b43b..50251a8af0ce 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -320,7 +320,7 @@ small_smb2_init(__le16 smb2_command, struct cifs_tcon *tcon,
smb2_hdr_assemble((struct smb2_hdr *) *request_buf, smb2_command, tcon);
if (tcon != NULL) {
-#ifdef CONFIG_CIFS_STATS2
+#ifdef CONFIG_CIFS_STATS
uint16_t com_code = le16_to_cpu(smb2_command);
cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]);
#endif
@@ -2565,33 +2565,38 @@ num_entries(char *bufstart, char *end_of_buf, char **lastentry, size_t size)
int len;
unsigned int entrycount = 0;
unsigned int next_offset = 0;
- FILE_DIRECTORY_INFO *entryptr;
+ char *entryptr;
+ FILE_DIRECTORY_INFO *dir_info;
if (bufstart == NULL)
return 0;
- entryptr = (FILE_DIRECTORY_INFO *)bufstart;
+ entryptr = bufstart;
while (1) {
- entryptr = (FILE_DIRECTORY_INFO *)
- ((char *)entryptr + next_offset);
-
- if ((char *)entryptr + size > end_of_buf) {
+ if (entryptr + next_offset < entryptr ||
+ entryptr + next_offset > end_of_buf ||
+ entryptr + next_offset + size > end_of_buf) {
cifs_dbg(VFS, "malformed search entry would overflow\n");
break;
}
- len = le32_to_cpu(entryptr->FileNameLength);
- if ((char *)entryptr + len + size > end_of_buf) {
+ entryptr = entryptr + next_offset;
+ dir_info = (FILE_DIRECTORY_INFO *)entryptr;
+
+ len = le32_to_cpu(dir_info->FileNameLength);
+ if (entryptr + len < entryptr ||
+ entryptr + len > end_of_buf ||
+ entryptr + len + size > end_of_buf) {
cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n",
end_of_buf);
break;
}
- *lastentry = (char *)entryptr;
+ *lastentry = entryptr;
entrycount++;
- next_offset = le32_to_cpu(entryptr->NextEntryOffset);
+ next_offset = le32_to_cpu(dir_info->NextEntryOffset);
if (!next_offset)
break;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-28 05:36:36 +0000