]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/file.h
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
;
23 extern struct file
*alloc_file_pseudo(struct inode
*, struct vfsmount
*,
24 const char *, int flags
, const struct file_operations
*);
25 extern struct file
*alloc_file_clone(struct file
*, int flags
,
26 const struct file_operations
*);
28 static inline void fput_light(struct file
*file
, int fput_needed
)
39 #define FDPUT_POS_UNLOCK 2
41 static inline void fdput(struct fd fd
)
43 if (fd
.flags
& FDPUT_FPUT
)
47 extern struct file
*fget(unsigned int fd
);
48 extern struct file
*fget_many(unsigned int fd
, unsigned int refs
);
49 extern struct file
*fget_raw(unsigned int fd
);
50 extern unsigned long __fdget(unsigned int fd
);
51 extern unsigned long __fdget_raw(unsigned int fd
);
52 extern unsigned long __fdget_pos(unsigned int fd
);
53 extern void __f_unlock_pos(struct file
*);
55 static inline struct fd
__to_fd(unsigned long v
)
57 return (struct fd
){(struct file
*)(v
& ~3),v
& 3};
60 static inline struct fd
fdget(unsigned int fd
)
62 return __to_fd(__fdget(fd
));
65 static inline struct fd
fdget_raw(unsigned int fd
)
67 return __to_fd(__fdget_raw(fd
));
70 static inline struct fd
fdget_pos(int fd
)
72 return __to_fd(__fdget_pos(fd
));
75 static inline void fdput_pos(struct fd f
)
77 if (f
.flags
& FDPUT_POS_UNLOCK
)
78 __f_unlock_pos(f
.file
);
82 extern int f_dupfd(unsigned int from
, struct file
*file
, unsigned flags
);
83 extern int replace_fd(unsigned fd
, struct file
*file
, unsigned flags
);
84 extern void set_close_on_exec(unsigned int fd
, int flag
);
85 extern bool get_close_on_exec(unsigned int fd
);
86 extern int get_unused_fd_flags(unsigned flags
);
87 extern void put_unused_fd(unsigned int fd
);
89 extern void fd_install(unsigned int fd
, struct file
*file
);
91 extern void flush_delayed_fput(void);
92 extern void __fput_sync(struct file
*);
94 #endif /* __LINUX_FILE_H */