[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>

diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c
index 998c4efcce88df4acb15485d529badd73a0782eb..ceb62dce1c9c6872966d05e33dacdc96acd5218f 100644 (file)
--- 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 b962c3ab470cbe01f2f5a5d6e510866bd8a60e5a..af116aadba105674617cb97e514996797501dc5c 100644 (file)
--- 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 6342b0534f4d3cda24aaac72cd5cb25deeb3021d..3582f43345a8c1d40397d2284dd2bc11d77a9fd4 100644 (file)
--- 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 1d298c2cf9301c0a1ac2026577463e6a3a6b1813..49c1a2267a55c7490c504ba7486b276575851ae8 100644 (file)
--- 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 139dc93c092d697b10d540a12020bd92e2e84b41..332a869d2c53e80a6bfb75c5e2bd3009802eca58 100644 (file)
--- 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 eaecc4cfe5402584c6e3b9510628170c3be463bf..676073b8dda57659202b123dde8adb90e0fb416b 100644 (file)
--- 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 9f9f931ef949987e29ba89204387c1428e491c66..aeaa9791d8be2ed499aea2c314d939f385d76e54 100644 (file)
--- 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 3f3ac630ccde701992caf5edf69a5f717c424f0c..bfd776509a7271e324c5559397542c36c4564a34 100644 (file)
--- 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 5110acb1c9ef59bb046a69f79fa601a07218b61a..f6fbcb49faf716e033a362b28598b87fe16843ce 100644 (file)
--- 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 7a0a9b8722513faae34fc0f145c06f241f2630f7..83084225b4c3b3195520d5a7a441360046d6f230 100644 (file)
--- 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 44d9a6a7ec50caad376e36d721a3a42bc5028948..663c069b59b3d6490fd2fa9046d4d0bc3620a581 100644 (file)
--- 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 7af1f05d59783cf3198771e9ea3945351deb7d7c..a1450086e92f87e64007351ab673bf6274037e70 100644 (file)
--- 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 c135cbdd9127a550d6da103f66fa7cc47584b72e..dca997a93bff32295fd3af13737d17cd24da9d7b 100644 (file)
--- 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 fcf02f2deeba398f790a4657574cfcbed9b55bc9..808cbdc193d309572c68b03d1b81b318511a4efc 100644 (file)
--- 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 80d70387e79004f13df8921b10d65b1e4cfac75e..8dda969614a9163f602fa62dca53a411c3400136 100644 (file)
--- 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 (file)
index 0000000..a118f3c
--- /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 69baf5a4f0a582cfeb061af5735e4a2d70e701e6..27c64bdc68c961baa821614bbfc6246951393acd 100644 (file)
--- 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 bf6b8a61f8db22913e5b9a09fa915adb6e69c768..b24c2875aa0570524502e12c97d8e7c3b0d44fa0 100644 (file)
--- 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 d3ad54677f9c0257fa0a373f8ce1b4774e947722..1510f78a0ffa5a9496604b3acee679ca63d93c99 100644 (file)
--- 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 2bb675af4de30908b2dd1a22e745541e2bcbc3f5..933e60ebccae9f35001753a4426993c6aaf54fb6 100644 (file)
--- 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 e2764047ec03ed123acd3546ff4357341302cabb..8df97d3dfda8611423d7cac323cb9ef5dce5170c 100644 (file)
--- 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 1b50a6ebc55fca85edaa9b7ef6256f31cc07ad4d..1c864c0efe2b90592d0e86a49e7347ff8ad02829 100644 (file)
--- 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>