Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Wrapper functions for accessing the file_struct fd array. | |
3 | */ | |
4 | ||
5 | #ifndef __LINUX_FILE_H | |
6 | #define __LINUX_FILE_H | |
7 | ||
1da177e4 | 8 | #include <linux/compiler.h> |
0c9e63fd | 9 | #include <linux/types.h> |
9f3acc31 | 10 | #include <linux/posix_types.h> |
1da177e4 | 11 | |
9f3acc31 | 12 | struct file; |
8b7d91eb | 13 | |
b3c97528 | 14 | extern void fput(struct file *); |
1da177e4 | 15 | |
ce8d2cdf DH |
16 | struct file_operations; |
17 | struct vfsmount; | |
18 | struct dentry; | |
2c48b9c4 AV |
19 | struct path; |
20 | extern struct file *alloc_file(struct path *, fmode_t mode, | |
21 | const struct file_operations *fop); | |
ce8d2cdf | 22 | |
1da177e4 LT |
23 | static inline void fput_light(struct file *file, int fput_needed) |
24 | { | |
c2b3e74b | 25 | if (fput_needed) |
1da177e4 LT |
26 | fput(file); |
27 | } | |
28 | ||
a5b470ba AV |
29 | struct fd { |
30 | struct file *file; | |
31 | int need_put; | |
32 | }; | |
33 | ||
34 | static inline void fdput(struct fd fd) | |
35 | { | |
36 | if (fd.need_put) | |
37 | fput(fd.file); | |
38 | } | |
39 | ||
b3c97528 HH |
40 | extern struct file *fget(unsigned int fd); |
41 | extern struct file *fget_light(unsigned int fd, int *fput_needed); | |
a5b470ba AV |
42 | |
43 | static inline struct fd fdget(unsigned int fd) | |
44 | { | |
45 | int b; | |
46 | struct file *f = fget_light(fd, &b); | |
47 | return (struct fd){f,b}; | |
48 | } | |
49 | ||
2903ff01 AV |
50 | extern struct file *fget_raw(unsigned int fd); |
51 | extern struct file *fget_raw_light(unsigned int fd, int *fput_needed); | |
52 | ||
a5b470ba AV |
53 | static inline struct fd fdget_raw(unsigned int fd) |
54 | { | |
55 | int b; | |
56 | struct file *f = fget_raw_light(fd, &b); | |
57 | return (struct fd){f,b}; | |
58 | } | |
59 | ||
fe17f22d | 60 | extern int f_dupfd(unsigned int from, struct file *file, unsigned flags); |
8280d161 | 61 | extern int replace_fd(unsigned fd, struct file *file, unsigned flags); |
b3c97528 | 62 | extern void set_close_on_exec(unsigned int fd, int flag); |
fe17f22d | 63 | extern bool get_close_on_exec(unsigned int fd); |
1da177e4 | 64 | extern void put_filp(struct file *); |
1a7bd226 AV |
65 | extern int get_unused_fd_flags(unsigned flags); |
66 | #define get_unused_fd() get_unused_fd_flags(0) | |
b3c97528 | 67 | extern void put_unused_fd(unsigned int fd); |
1da177e4 | 68 | |
b3c97528 | 69 | extern void fd_install(unsigned int fd, struct file *file); |
1da177e4 | 70 | |
4a9d4b02 AV |
71 | extern void flush_delayed_fput(void); |
72 | extern void __fput_sync(struct file *); | |
73 | ||
1da177e4 | 74 | #endif /* __LINUX_FILE_H */ |