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[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>
master
Al Viro 14 years ago
parent
commit
9f3acc3140
  1. 1
      arch/mips/kernel/kspd.c
  2. 1
      arch/powerpc/platforms/cell/spufs/coredump.c
  3. 1
      drivers/char/tty_audit.c
  4. 1
      drivers/char/tty_io.c
  5. 1
      fs/compat.c
  6. 2
      fs/dnotify.c
  7. 1
      fs/exec.c
  8. 1
      fs/fcntl.c
  9. 1
      fs/file.c
  10. 1
      fs/file_table.c
  11. 1
      fs/locks.c
  12. 1
      fs/open.c
  13. 1
      fs/proc/array.c
  14. 1
      fs/proc/base.c
  15. 1
      fs/select.c
  16. 99
      include/linux/fdtable.h
  17. 86
      include/linux/file.h
  18. 2
      include/linux/init_task.h
  19. 1
      kernel/exit.c
  20. 1
      kernel/fork.c
  21. 1
      kernel/kmod.c
  22. 1
      security/selinux/hooks.c

1
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>

1
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>

1
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 {

1
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>

1
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>

2
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;

1
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>

1
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>

1
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>

1
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>

1
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>

1
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>

1
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>

1
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>

1
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>

99
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 */

86
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 */

2
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>

1
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>

1
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>

1
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>

1
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>

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