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authorAl Viro <viro@zeniv.linux.org.uk>2008-04-24 07:44:08 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2008-05-01 13:08:16 -0400
commit9f3acc3140444a900ab280de942291959f0f615d (patch)
tree0d7f3f9698071ff90fb9a127a4c6e86e1c37c945
parenta2dcb44c3c5a8151d2d9f6ac8ad0789efcdbe184 (diff)
downloadlinux-linaro-9f3acc3140444a900ab280de942291959f0f615d.tar.gz
[PATCH] split linux/file.h
Initial splitoff of the low-level stuff; taken to fdtable.h Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--arch/mips/kernel/kspd.c1
-rw-r--r--arch/powerpc/platforms/cell/spufs/coredump.c1
-rw-r--r--drivers/char/tty_audit.c1
-rw-r--r--drivers/char/tty_io.c1
-rw-r--r--fs/compat.c1
-rw-r--r--fs/dnotify.c2
-rw-r--r--fs/exec.c1
-rw-r--r--fs/fcntl.c1
-rw-r--r--fs/file.c1
-rw-r--r--fs/file_table.c1
-rw-r--r--fs/locks.c1
-rw-r--r--fs/open.c1
-rw-r--r--fs/proc/array.c1
-rw-r--r--fs/proc/base.c1
-rw-r--r--fs/select.c1
-rw-r--r--include/linux/fdtable.h99
-rw-r--r--include/linux/file.h86
-rw-r--r--include/linux/init_task.h2
-rw-r--r--kernel/exit.c1
-rw-r--r--kernel/fork.c1
-rw-r--r--kernel/kmod.c1
-rw-r--r--security/selinux/hooks.c1
22 files changed, 121 insertions, 86 deletions
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c
index 998c4efcce8..ceb62dce1c9 100644
--- a/arch/mips/kernel/kspd.c
+++ b/arch/mips/kernel/kspd.c
@@ -20,6 +20,7 @@
#include <linux/sched.h>
#include <linux/unistd.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/fs.h>
#include <linux/syscalls.h>
#include <linux/workqueue.h>
diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c
index b962c3ab470..af116aadba1 100644
--- a/arch/powerpc/platforms/cell/spufs/coredump.c
+++ b/arch/powerpc/platforms/cell/spufs/coredump.c
@@ -22,6 +22,7 @@
#include <linux/elf.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/module.h>
diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c
index 6342b0534f4..3582f43345a 100644
--- a/drivers/char/tty_audit.c
+++ b/drivers/char/tty_audit.c
@@ -11,6 +11,7 @@
#include <linux/audit.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/tty.h>
struct tty_audit_buf {
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 1d298c2cf93..49c1a2267a5 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -78,6 +78,7 @@
#include <linux/tty_flip.h>
#include <linux/devpts_fs.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/console.h>
#include <linux/timer.h>
#include <linux/ctype.h>
diff --git a/fs/compat.c b/fs/compat.c
index 139dc93c092..332a869d2c5 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -24,6 +24,7 @@
#include <linux/fcntl.h>
#include <linux/namei.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/vfs.h>
#include <linux/ioctl.h>
#include <linux/init.h>
diff --git a/fs/dnotify.c b/fs/dnotify.c
index eaecc4cfe54..676073b8dda 100644
--- a/fs/dnotify.c
+++ b/fs/dnotify.c
@@ -20,7 +20,7 @@
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
-#include <linux/file.h>
+#include <linux/fdtable.h>
int dir_notify_enable __read_mostly = 1;
diff --git a/fs/exec.c b/fs/exec.c
index 9f9f931ef94..aeaa9791d8b 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/mman.h>
#include <linux/a.out.h>
#include <linux/stat.h>
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 3f3ac630ccd..bfd776509a7 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -9,6 +9,7 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/capability.h>
#include <linux/dnotify.h>
#include <linux/smp_lock.h>
diff --git a/fs/file.c b/fs/file.c
index 5110acb1c9e..f6fbcb49faf 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/bitops.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
diff --git a/fs/file_table.c b/fs/file_table.c
index 7a0a9b87225..83084225b4c 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -8,6 +8,7 @@
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
diff --git a/fs/locks.c b/fs/locks.c
index 44d9a6a7ec5..663c069b59b 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -116,6 +116,7 @@
#include <linux/capability.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/module.h>
diff --git a/fs/open.c b/fs/open.c
index 7af1f05d597..a1450086e92 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -7,6 +7,7 @@
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/quotaops.h>
#include <linux/fsnotify.h>
#include <linux/module.h>
diff --git a/fs/proc/array.c b/fs/proc/array.c
index c135cbdd912..dca997a93bf 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -73,6 +73,7 @@
#include <linux/signal.h>
#include <linux/highmem.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/times.h>
#include <linux/cpuset.h>
#include <linux/rcupdate.h>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index fcf02f2deeb..808cbdc193d 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -56,6 +56,7 @@
#include <linux/init.h>
#include <linux/capability.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/namei.h>
diff --git a/fs/select.c b/fs/select.c
index 80d70387e79..8dda969614a 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -21,6 +21,7 @@
#include <linux/poll.h>
#include <linux/personality.h> /* for STICKY_TIMEOUTS */
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/fs.h>
#include <linux/rcupdate.h>
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
new file mode 100644
index 00000000000..a118f3c0b24
--- /dev/null
+++ b/include/linux/fdtable.h
@@ -0,0 +1,99 @@
+/*
+ * descriptor table internals; you almost certainly want file.h instead.
+ */
+
+#ifndef __LINUX_FDTABLE_H
+#define __LINUX_FDTABLE_H
+
+#include <asm/atomic.h>
+#include <linux/posix_types.h>
+#include <linux/compiler.h>
+#include <linux/spinlock.h>
+#include <linux/rcupdate.h>
+#include <linux/types.h>
+
+/*
+ * The default fd array needs to be at least BITS_PER_LONG,
+ * as this is the granularity returned by copy_fdset().
+ */
+#define NR_OPEN_DEFAULT BITS_PER_LONG
+
+/*
+ * The embedded_fd_set is a small fd_set,
+ * suitable for most tasks (which open <= BITS_PER_LONG files)
+ */
+struct embedded_fd_set {
+ unsigned long fds_bits[1];
+};
+
+struct fdtable {
+ unsigned int max_fds;
+ struct file ** fd; /* current fd array */
+ fd_set *close_on_exec;
+ fd_set *open_fds;
+ struct rcu_head rcu;
+ struct fdtable *next;
+};
+
+/*
+ * Open file table structure
+ */
+struct files_struct {
+ /*
+ * read mostly part
+ */
+ atomic_t count;
+ struct fdtable *fdt;
+ struct fdtable fdtab;
+ /*
+ * written part on a separate cache line in SMP
+ */
+ spinlock_t file_lock ____cacheline_aligned_in_smp;
+ int next_fd;
+ struct embedded_fd_set close_on_exec_init;
+ struct embedded_fd_set open_fds_init;
+ struct file * fd_array[NR_OPEN_DEFAULT];
+};
+
+#define files_fdtable(files) (rcu_dereference((files)->fdt))
+
+extern struct kmem_cache *filp_cachep;
+
+struct file_operations;
+struct vfsmount;
+struct dentry;
+
+extern int expand_files(struct files_struct *, int nr);
+extern void free_fdtable_rcu(struct rcu_head *rcu);
+extern void __init files_defer_init(void);
+
+static inline void free_fdtable(struct fdtable *fdt)
+{
+ call_rcu(&fdt->rcu, free_fdtable_rcu);
+}
+
+static inline struct file * fcheck_files(struct files_struct *files, unsigned int fd)
+{
+ struct file * file = NULL;
+ struct fdtable *fdt = files_fdtable(files);
+
+ if (fd < fdt->max_fds)
+ file = rcu_dereference(fdt->fd[fd]);
+ return file;
+}
+
+/*
+ * Check whether the specified fd has an open file.
+ */
+#define fcheck(fd) fcheck_files(current->files, fd)
+
+struct task_struct;
+
+struct files_struct *get_files_struct(struct task_struct *);
+void put_files_struct(struct files_struct *fs);
+void reset_files_struct(struct files_struct *);
+int unshare_files(struct files_struct **);
+
+extern struct kmem_cache *files_cachep;
+
+#endif /* __LINUX_FDTABLE_H */
diff --git a/include/linux/file.h b/include/linux/file.h
index 69baf5a4f0a..27c64bdc68c 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -5,59 +5,11 @@
#ifndef __LINUX_FILE_H
#define __LINUX_FILE_H
-#include <asm/atomic.h>
-#include <linux/posix_types.h>
#include <linux/compiler.h>
-#include <linux/spinlock.h>
-#include <linux/rcupdate.h>
#include <linux/types.h>
+#include <linux/posix_types.h>
-/*
- * The default fd array needs to be at least BITS_PER_LONG,
- * as this is the granularity returned by copy_fdset().
- */
-#define NR_OPEN_DEFAULT BITS_PER_LONG
-
-/*
- * The embedded_fd_set is a small fd_set,
- * suitable for most tasks (which open <= BITS_PER_LONG files)
- */
-struct embedded_fd_set {
- unsigned long fds_bits[1];
-};
-
-struct fdtable {
- unsigned int max_fds;
- struct file ** fd; /* current fd array */
- fd_set *close_on_exec;
- fd_set *open_fds;
- struct rcu_head rcu;
- struct fdtable *next;
-};
-
-/*
- * Open file table structure
- */
-struct files_struct {
- /*
- * read mostly part
- */
- atomic_t count;
- struct fdtable *fdt;
- struct fdtable fdtab;
- /*
- * written part on a separate cache line in SMP
- */
- spinlock_t file_lock ____cacheline_aligned_in_smp;
- int next_fd;
- struct embedded_fd_set close_on_exec_init;
- struct embedded_fd_set open_fds_init;
- struct file * fd_array[NR_OPEN_DEFAULT];
-};
-
-#define files_fdtable(files) (rcu_dereference((files)->fdt))
-
-extern struct kmem_cache *filp_cachep;
+struct file;
extern void __fput(struct file *);
extern void fput(struct file *);
@@ -85,41 +37,7 @@ extern void put_filp(struct file *);
extern int get_unused_fd(void);
extern int get_unused_fd_flags(int flags);
extern void put_unused_fd(unsigned int fd);
-struct kmem_cache;
-
-extern int expand_files(struct files_struct *, int nr);
-extern void free_fdtable_rcu(struct rcu_head *rcu);
-extern void __init files_defer_init(void);
-
-static inline void free_fdtable(struct fdtable *fdt)
-{
- call_rcu(&fdt->rcu, free_fdtable_rcu);
-}
-
-static inline struct file * fcheck_files(struct files_struct *files, unsigned int fd)
-{
- struct file * file = NULL;
- struct fdtable *fdt = files_fdtable(files);
-
- if (fd < fdt->max_fds)
- file = rcu_dereference(fdt->fd[fd]);
- return file;
-}
-
-/*
- * Check whether the specified fd has an open file.
- */
-#define fcheck(fd) fcheck_files(current->files, fd)
extern void fd_install(unsigned int fd, struct file *file);
-struct task_struct;
-
-struct files_struct *get_files_struct(struct task_struct *);
-void put_files_struct(struct files_struct *fs);
-void reset_files_struct(struct files_struct *);
-int unshare_files(struct files_struct **);
-
-extern struct kmem_cache *files_cachep;
-
#endif /* __LINUX_FILE_H */
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index bf6b8a61f8d..b24c2875aa0 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -1,7 +1,7 @@
#ifndef _LINUX__INIT_TASK_H
#define _LINUX__INIT_TASK_H
-#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/rcupdate.h>
#include <linux/irqflags.h>
#include <linux/utsname.h>
diff --git a/kernel/exit.c b/kernel/exit.c
index d3ad54677f9..1510f78a0ff 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -19,6 +19,7 @@
#include <linux/acct.h>
#include <linux/tsacct_kern.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/binfmts.h>
#include <linux/nsproxy.h>
#include <linux/pid_namespace.h>
diff --git a/kernel/fork.c b/kernel/fork.c
index 2bb675af4de..933e60ebcca 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -22,6 +22,7 @@
#include <linux/mempolicy.h>
#include <linux/sem.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/key.h>
#include <linux/binfmts.h>
#include <linux/mman.h>
diff --git a/kernel/kmod.c b/kernel/kmod.c
index e2764047ec0..8df97d3dfda 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -27,6 +27,7 @@
#include <linux/mnt_namespace.h>
#include <linux/completion.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/workqueue.h>
#include <linux/security.h>
#include <linux/mount.h>
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 1b50a6ebc55..1c864c0efe2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -39,6 +39,7 @@
#include <linux/spinlock.h>
#include <linux/syscalls.h>
#include <linux/file.h>
+#include <linux/fdtable.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/ext2_fs.h>