Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * Wrapper functions for accessing the file_struct fd array.
3 */
4
5#ifndef __LINUX_FILE_H
6#define __LINUX_FILE_H
7
8#include <linux/compiler.h>
9#include <linux/types.h>
10#include <linux/posix_types.h>
11
12struct file;
13
14extern void fput(struct file *);
15
16struct file_operations;
17struct vfsmount;
18struct dentry;
19struct path;
20extern struct file *alloc_file(struct path *, fmode_t mode,
21 const struct file_operations *fop);
22
23static inline void fput_light(struct file *file, int fput_needed)
24{
25 if (fput_needed)
26 fput(file);
27}
28
29struct fd {
30 struct file *file;
31 int need_put;
32};
33
34static inline void fdput(struct fd fd)
35{
36 if (fd.need_put)
37 fput(fd.file);
38}
39
40extern struct file *fget(unsigned int fd);
41extern struct file *fget_light(unsigned int fd, int *fput_needed);
42
43static 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
50extern struct file *fget_raw(unsigned int fd);
51extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
52
53static 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
60extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);
61extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
62extern void set_close_on_exec(unsigned int fd, int flag);
63extern bool get_close_on_exec(unsigned int fd);
64extern void put_filp(struct file *);
65extern int get_unused_fd_flags(unsigned flags);
66#define get_unused_fd() get_unused_fd_flags(0)
67extern void put_unused_fd(unsigned int fd);
68
69extern void fd_install(unsigned int fd, struct file *file);
70
71extern void flush_delayed_fput(void);
72extern void __fput_sync(struct file *);
73
74#endif /* __LINUX_FILE_H */