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git.proxmox.com Git - mirror_ubuntu-eoan-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
*);
17 struct file_operations
;
22 extern struct file
*alloc_file_pseudo(struct inode
*, struct vfsmount
*,
23 const char *, int flags
, const struct file_operations
*);
24 extern struct file
*alloc_file_clone(struct file
*, int flags
,
25 const struct file_operations
*);
27 static inline void fput_light(struct file
*file
, int fput_needed
)
38 #define FDPUT_POS_UNLOCK 2
40 static inline void fdput(struct fd fd
)
42 if (fd
.flags
& FDPUT_FPUT
)
46 extern struct file
*fget(unsigned int fd
);
47 extern struct file
*fget_raw(unsigned int fd
);
48 extern unsigned long __fdget(unsigned int fd
);
49 extern unsigned long __fdget_raw(unsigned int fd
);
50 extern unsigned long __fdget_pos(unsigned int fd
);
51 extern void __f_unlock_pos(struct file
*);
53 static inline struct fd
__to_fd(unsigned long v
)
55 return (struct fd
){(struct file
*)(v
& ~3),v
& 3};
58 static inline struct fd
fdget(unsigned int fd
)
60 return __to_fd(__fdget(fd
));
63 static inline struct fd
fdget_raw(unsigned int fd
)
65 return __to_fd(__fdget_raw(fd
));
68 static inline struct fd
fdget_pos(int fd
)
70 return __to_fd(__fdget_pos(fd
));
73 static inline void fdput_pos(struct fd f
)
75 if (f
.flags
& FDPUT_POS_UNLOCK
)
76 __f_unlock_pos(f
.file
);
80 extern int f_dupfd(unsigned int from
, struct file
*file
, unsigned flags
);
81 extern int replace_fd(unsigned fd
, struct file
*file
, unsigned flags
);
82 extern void set_close_on_exec(unsigned int fd
, int flag
);
83 extern bool get_close_on_exec(unsigned int fd
);
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 */