forked from Minki/linux
1027abe882
New primitive: alloc_fd(start, flags). get_unused_fd() and get_unused_fd_flags() become wrappers on top of it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
45 lines
1.2 KiB
C
45 lines
1.2 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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extern void fput(struct file *);
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extern void drop_file_write_access(struct file *file);
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struct file_operations;
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struct vfsmount;
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struct dentry;
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extern int init_file(struct file *, struct vfsmount *mnt,
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struct dentry *dentry, mode_t mode,
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const struct file_operations *fop);
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extern struct file *alloc_file(struct vfsmount *, struct dentry *dentry,
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mode_t mode, 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 (unlikely(fput_needed))
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fput(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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extern void set_close_on_exec(unsigned int fd, int flag);
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extern void put_filp(struct file *);
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extern int alloc_fd(unsigned start, unsigned flags);
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extern int get_unused_fd(void);
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#define get_unused_fd_flags(flags) alloc_fd(0, (flags))
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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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#endif /* __LINUX_FILE_H */
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