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 12 struct file; 13 14 extern void __fput(struct file *); 15 extern void fput(struct file *); 16 extern void drop_file_write_access(struct file *file); 17 18 struct file_operations; 19 struct vfsmount; 20 struct dentry; 21 extern int init_file(struct file *, struct vfsmount *mnt, 22 struct dentry *dentry, mode_t mode, 23 const struct file_operations *fop); 24 extern struct file *alloc_file(struct vfsmount *, struct dentry *dentry, 25 mode_t mode, const struct file_operations *fop); 26 27 static inline void fput_light(struct file *file, int fput_needed) 28 { 29 if (unlikely(fput_needed)) 30 fput(file); 31 } 32 33 extern struct file *fget(unsigned int fd); 34 extern struct file *fget_light(unsigned int fd, int *fput_needed); 35 extern void set_close_on_exec(unsigned int fd, int flag); 36 extern void put_filp(struct file *); 37 extern int get_unused_fd(void); 38 extern int get_unused_fd_flags(int flags); 39 extern void put_unused_fd(unsigned int fd); 40 41 extern void fd_install(unsigned int fd, struct file *file); 42 43 #endif /* __LINUX_FILE_H */ 44