diff options
| -rw-r--r-- | arch/mips/kernel/kspd.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/coredump.c | 1 | ||||
| -rw-r--r-- | drivers/char/tty_audit.c | 1 | ||||
| -rw-r--r-- | drivers/char/tty_io.c | 1 | ||||
| -rw-r--r-- | fs/compat.c | 1 | ||||
| -rw-r--r-- | fs/dnotify.c | 2 | ||||
| -rw-r--r-- | fs/exec.c | 1 | ||||
| -rw-r--r-- | fs/fcntl.c | 1 | ||||
| -rw-r--r-- | fs/file.c | 1 | ||||
| -rw-r--r-- | fs/file_table.c | 1 | ||||
| -rw-r--r-- | fs/locks.c | 1 | ||||
| -rw-r--r-- | fs/open.c | 1 | ||||
| -rw-r--r-- | fs/proc/array.c | 1 | ||||
| -rw-r--r-- | fs/proc/base.c | 1 | ||||
| -rw-r--r-- | fs/select.c | 1 | ||||
| -rw-r--r-- | include/linux/fdtable.h | 99 | ||||
| -rw-r--r-- | include/linux/file.h | 86 | ||||
| -rw-r--r-- | include/linux/init_task.h | 2 | ||||
| -rw-r--r-- | kernel/exit.c | 1 | ||||
| -rw-r--r-- | kernel/fork.c | 1 | ||||
| -rw-r--r-- | kernel/kmod.c | 1 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 1 |
22 files changed, 121 insertions, 86 deletions
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c index 998c4efcce88..ceb62dce1c9c 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 b962c3ab470c..af116aadba10 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 6342b0534f4d..3582f43345a8 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 1d298c2cf930..49c1a2267a55 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 139dc93c092d..332a869d2c53 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 eaecc4cfe540..676073b8dda5 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 9f9f931ef949..aeaa9791d8be 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 3f3ac630ccde..bfd776509a72 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 5110acb1c9ef..f6fbcb49faf7 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 7a0a9b872251..83084225b4c3 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 44d9a6a7ec50..663c069b59b3 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 7af1f05d5978..a1450086e92f 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 c135cbdd9127..dca997a93bff 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 fcf02f2deeba..808cbdc193d3 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 80d70387e790..8dda969614a9 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 000000000000..a118f3c0b240 --- /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 69baf5a4f0a5..27c64bdc68c9 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 bf6b8a61f8db..b24c2875aa05 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 d3ad54677f9c..1510f78a0ffa 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 2bb675af4de3..933e60ebccae 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 e2764047ec03..8df97d3dfda8 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 1b50a6ebc55f..1c864c0efe2b 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> |
