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 drop_file_write_access(struct file *file); 16 17 struct file_operations; 18 struct vfsmount; 19 struct dentry; 20 struct path; 21 extern struct file *alloc_file(struct path *, fmode_t mode, 22 const struct file_operations *fop); 23 24 static inline void fput_light(struct file *file, int fput_needed) 25 { 26 if (fput_needed) 27 fput(file); 28 } 29 30 extern struct file *fget(unsigned int fd); 31 extern struct file *fget_light(unsigned int fd, int *fput_needed); 32 extern struct file *fget_raw(unsigned int fd); 33 extern struct file *fget_raw_light(unsigned int fd, int *fput_needed); 34 extern void set_close_on_exec(unsigned int fd, int flag); 35 extern void put_filp(struct file *); 36 extern int alloc_fd(unsigned start, unsigned flags); 37 extern int get_unused_fd(void); 38 #define get_unused_fd_flags(flags) alloc_fd(0, (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