75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/*
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* Wrapper functions for accessing the file_struct fd array.
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*/
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#ifndef __LINUX_FILE_H
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#define __LINUX_FILE_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/posix_types.h>
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struct file;
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extern void fput(struct file *);
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struct file_operations;
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struct vfsmount;
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struct dentry;
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struct path;
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extern struct file *alloc_file(struct path *, fmode_t mode,
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const struct file_operations *fop);
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static inline void fput_light(struct file *file, int fput_needed)
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{
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if (fput_needed)
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fput(file);
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}
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struct fd {
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struct file *file;
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int need_put;
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};
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static inline void fdput(struct fd fd)
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{
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if (fd.need_put)
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fput(fd.file);
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}
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extern struct file *fget(unsigned int fd);
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extern struct file *fget_light(unsigned int fd, int *fput_needed);
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static inline struct fd fdget(unsigned int fd)
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{
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int b;
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struct file *f = fget_light(fd, &b);
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return (struct fd){f,b};
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}
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extern struct file *fget_raw(unsigned int fd);
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extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
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static inline struct fd fdget_raw(unsigned int fd)
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{
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int b;
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struct file *f = fget_raw_light(fd, &b);
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return (struct fd){f,b};
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}
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extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);
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extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
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extern void set_close_on_exec(unsigned int fd, int flag);
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extern bool get_close_on_exec(unsigned int fd);
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extern void put_filp(struct file *);
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extern int get_unused_fd_flags(unsigned flags);
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#define get_unused_fd() get_unused_fd_flags(0)
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extern void put_unused_fd(unsigned int fd);
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extern void fd_install(unsigned int fd, struct file *file);
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extern void flush_delayed_fput(void);
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extern void __fput_sync(struct file *);
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#endif /* __LINUX_FILE_H */
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