1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Wrapper functions for accessing the file_struct fd array.
9 #include <linux/compiler.h>
10 #include <linux/types.h>
11 #include <linux/posix_types.h>
15 extern void fput(struct file *);
16 extern void fput_many(struct file *, unsigned int);
18 struct file_operations;
22 extern struct file *alloc_file(const struct path *, fmode_t mode,
23 const struct file_operations *fop);
25 static inline void fput_light(struct file *file, int fput_needed)
36 #define FDPUT_POS_UNLOCK 2
38 static inline void fdput(struct fd fd)
40 if (fd.flags & FDPUT_FPUT)
44 extern struct file *fget(unsigned int fd);
45 extern struct file *fget_many(unsigned int fd, unsigned int refs);
46 extern struct file *fget_raw(unsigned int fd);
47 extern unsigned long __fdget(unsigned int fd);
48 extern unsigned long __fdget_raw(unsigned int fd);
49 extern unsigned long __fdget_pos(unsigned int fd);
50 extern void __f_unlock_pos(struct file *);
52 static inline struct fd __to_fd(unsigned long v)
54 return (struct fd){(struct file *)(v & ~3),v & 3};
57 static inline struct fd fdget(unsigned int fd)
59 return __to_fd(__fdget(fd));
62 static inline struct fd fdget_raw(unsigned int fd)
64 return __to_fd(__fdget_raw(fd));
67 static inline struct fd fdget_pos(int fd)
69 return __to_fd(__fdget_pos(fd));
72 static inline void fdput_pos(struct fd f)
74 if (f.flags & FDPUT_POS_UNLOCK)
75 __f_unlock_pos(f.file);
79 extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);
80 extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
81 extern void set_close_on_exec(unsigned int fd, int flag);
82 extern bool get_close_on_exec(unsigned int fd);
83 extern void put_filp(struct file *);
84 extern int get_unused_fd_flags(unsigned flags);
85 extern void put_unused_fd(unsigned int fd);
87 extern void fd_install(unsigned int fd, struct file *file);
89 extern void flush_delayed_fput(void);
90 extern void __fput_sync(struct file *);
92 #endif /* __LINUX_FILE_H */