1/* 2 * Wrapper functions for accessing the file_struct fd array. 3 */ 4 5#ifndef __LINUX_FILE_H 6#define __LINUX_FILE_H 7 8#include <linux/compiler.h> 9#include <linux/types.h> 10#include <linux/posix_types.h> 11 12struct file; 13 14extern void fput(struct file *); 15extern void drop_file_write_access(struct file *file); 16 17struct file_operations; 18struct vfsmount; 19struct dentry; 20struct path; 21extern struct file *alloc_file(struct path *, fmode_t mode, 22 const struct file_operations *fop); 23 24static inline void fput_light(struct file *file, int fput_needed) 25{ 26 if (unlikely(fput_needed)) 27 fput(file); 28} 29 30extern struct file *fget(unsigned int fd); 31extern struct file *fget_light(unsigned int fd, int *fput_needed); 32extern void set_close_on_exec(unsigned int fd, int flag); 33extern void put_filp(struct file *); 34extern int alloc_fd(unsigned start, unsigned flags); 35extern int get_unused_fd(void); 36#define get_unused_fd_flags(flags) alloc_fd(0, (flags)) 37extern void put_unused_fd(unsigned int fd); 38 39extern void fd_install(unsigned int fd, struct file *file); 40 41#endif /* __LINUX_FILE_H */ 42