| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Wrapper functions for accessing the file_struct fd array. |
| 3 | */ |
| 4 | |
| 5 | #ifndef __LINUX_FILE_H |
| 6 | #define __LINUX_FILE_H |
| 7 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/compiler.h> |
| Eric Dumazet | 0c9e63f | 2006-03-23 03:00:12 -0800 | [diff] [blame] | 9 | #include <linux/types.h> |
| Al Viro | 9f3acc3 | 2008-04-24 07:44:08 -0400 | [diff] [blame] | 10 | #include <linux/posix_types.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| Al Viro | 9f3acc3 | 2008-04-24 07:44:08 -0400 | [diff] [blame] | 12 | struct file; |
| Christoph Lameter | 8b7d91e | 2006-12-06 20:32:52 -0800 | [diff] [blame] | 13 | |
| Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 14 | extern void __fput(struct file *); |
| 15 | extern void fput(struct file *); |
| Dave Hansen | aceaf78 | 2008-02-15 14:37:31 -0800 | [diff] [blame] | 16 | extern void drop_file_write_access(struct file *file); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
| Dave Hansen | ce8d2cd | 2007-10-16 23:31:13 -0700 | [diff] [blame] | 18 | struct file_operations; |
| 19 | struct vfsmount; |
| 20 | struct dentry; |
| 21 | extern int init_file(struct file *, struct vfsmount *mnt, |
| Al Viro | aeb5d72 | 2008-09-02 15:28:45 -0400 | [diff] [blame] | 22 | struct dentry *dentry, fmode_t mode, |
| Dave Hansen | ce8d2cd | 2007-10-16 23:31:13 -0700 | [diff] [blame] | 23 | const struct file_operations *fop); |
| 24 | extern struct file *alloc_file(struct vfsmount *, struct dentry *dentry, |
| Al Viro | aeb5d72 | 2008-09-02 15:28:45 -0400 | [diff] [blame] | 25 | fmode_t mode, const struct file_operations *fop); |
| Dave Hansen | ce8d2cd | 2007-10-16 23:31:13 -0700 | [diff] [blame] | 26 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | static inline void fput_light(struct file *file, int fput_needed) |
| 28 | { |
| 29 | if (unlikely(fput_needed)) |
| 30 | fput(file); |
| 31 | } |
| 32 | |
| Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 33 | extern struct file *fget(unsigned int fd); |
| 34 | extern struct file *fget_light(unsigned int fd, int *fput_needed); |
| 35 | extern void set_close_on_exec(unsigned int fd, int flag); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | extern void put_filp(struct file *); |
| Al Viro | 1027abe | 2008-07-30 04:13:04 -0400 | [diff] [blame] | 37 | extern int alloc_fd(unsigned start, unsigned flags); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | extern int get_unused_fd(void); |
| Al Viro | 1027abe | 2008-07-30 04:13:04 -0400 | [diff] [blame] | 39 | #define get_unused_fd_flags(flags) alloc_fd(0, (flags)) |
| Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 40 | extern void put_unused_fd(unsigned int fd); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 42 | extern void fd_install(unsigned int fd, struct file *file); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #endif /* __LINUX_FILE_H */ |