158 	struct fd f;  in do_sys_ftruncate()  local
165 	f = fdget(fd);  in do_sys_ftruncate()
166 	if (!f.file)  in do_sys_ftruncate()
170 	if (f.file->f_flags & O_LARGEFILE)  in do_sys_ftruncate()
173 	dentry = f.file->f_path.dentry;  in do_sys_ftruncate()
176 	if (!S_ISREG(inode->i_mode) || !(f.file->f_mode & FMODE_WRITE))  in do_sys_ftruncate()
189 	error = locks_verify_truncate(inode, f.file, length);  in do_sys_ftruncate()
191 		error = security_path_truncate(&f.file->f_path);  in do_sys_ftruncate()
193 		error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, f.file);  in do_sys_ftruncate()
196 	fdput(f);  in do_sys_ftruncate()
322 	struct fd f = fdget(fd);  in SYSCALL_DEFINE4()  local
325 	if (f.file) {  in SYSCALL_DEFINE4()
326 		error = vfs_fallocate(f.file, mode, offset, len);  in SYSCALL_DEFINE4()
327 		fdput(f);  in SYSCALL_DEFINE4()
446 	struct fd f = fdget_raw(fd);  in SYSCALL_DEFINE1()  local
451 	if (!f.file)  in SYSCALL_DEFINE1()
454 	inode = file_inode(f.file);  in SYSCALL_DEFINE1()
462 		set_fs_pwd(current->fs, &f.file->f_path);  in SYSCALL_DEFINE1()
464 	fdput(f);  in SYSCALL_DEFINE1()
533 	struct fd f = fdget(fd);  in SYSCALL_DEFINE2()  local
536 	if (f.file) {  in SYSCALL_DEFINE2()
537 		audit_file(f.file);  in SYSCALL_DEFINE2()
538 		err = chmod_common(&f.file->f_path, mode);  in SYSCALL_DEFINE2()
539 		fdput(f);  in SYSCALL_DEFINE2()
654 	struct fd f = fdget(fd);  in SYSCALL_DEFINE3()  local
657 	if (!f.file)  in SYSCALL_DEFINE3()
660 	error = mnt_want_write_file(f.file);  in SYSCALL_DEFINE3()
663 	audit_file(f.file);  in SYSCALL_DEFINE3()
664 	error = chown_common(&f.file->f_path, user, group);  in SYSCALL_DEFINE3()
665 	mnt_drop_write_file(f.file);  in SYSCALL_DEFINE3()
667 	fdput(f);  in SYSCALL_DEFINE3()
672 int open_check_o_direct(struct file *f)  in open_check_o_direct()  argument
675 	if (f->f_flags & O_DIRECT) {  in open_check_o_direct()
676 		if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)  in open_check_o_direct()
682 static int do_dentry_open(struct file *f,  in do_dentry_open()  argument
690 	f->f_mode = OPEN_FMODE(f->f_flags) | FMODE_LSEEK |  in do_dentry_open()
693 	path_get(&f->f_path);  in do_dentry_open()
694 	f->f_inode = inode;  in do_dentry_open()
695 	f->f_mapping = inode->i_mapping;  in do_dentry_open()
697 	if (unlikely(f->f_flags & O_PATH)) {  in do_dentry_open()
698 		f->f_mode = FMODE_PATH;  in do_dentry_open()
699 		f->f_op = &empty_fops;  in do_dentry_open()
703 	if (f->f_mode & FMODE_WRITE && !special_file(inode->i_mode)) {  in do_dentry_open()
707 		error = __mnt_want_write(f->f_path.mnt);  in do_dentry_open()
712 		f->f_mode |= FMODE_WRITER;  in do_dentry_open()
717 		f->f_mode |= FMODE_ATOMIC_POS;  in do_dentry_open()
719 	f->f_op = fops_get(inode->i_fop);  in do_dentry_open()
720 	if (unlikely(WARN_ON(!f->f_op))) {  in do_dentry_open()
725 	error = security_file_open(f, cred);  in do_dentry_open()
729 	error = break_lease(inode, f->f_flags);  in do_dentry_open()
734 		open = f->f_op->open;  in do_dentry_open()
736 		error = open(inode, f);  in do_dentry_open()
740 	if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)  in do_dentry_open()
742 	if ((f->f_mode & FMODE_READ) &&  in do_dentry_open()
743 	     likely(f->f_op->read || f->f_op->read_iter))  in do_dentry_open()
744 		f->f_mode |= FMODE_CAN_READ;  in do_dentry_open()
745 	if ((f->f_mode & FMODE_WRITE) &&  in do_dentry_open()
746 	     likely(f->f_op->write || f->f_op->write_iter))  in do_dentry_open()
747 		f->f_mode |= FMODE_CAN_WRITE;  in do_dentry_open()
749 	f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);  in do_dentry_open()
751 	file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);  in do_dentry_open()
756 	fops_put(f->f_op);  in do_dentry_open()
757 	if (f->f_mode & FMODE_WRITER) {  in do_dentry_open()
759 		__mnt_drop_write(f->f_path.mnt);  in do_dentry_open()
762 	path_put(&f->f_path);  in do_dentry_open()
763 	f->f_path.mnt = NULL;  in do_dentry_open()
764 	f->f_path.dentry = NULL;  in do_dentry_open()
765 	f->f_inode = NULL;  in do_dentry_open()
856 	struct file *f;  in dentry_open()  local
863 	f = get_empty_filp();  in dentry_open()
864 	if (!IS_ERR(f)) {  in dentry_open()
865 		f->f_flags = flags;  in dentry_open()
866 		error = vfs_open(path, f, cred);  in dentry_open()
869 			error = open_check_o_direct(f);  in dentry_open()
871 				fput(f);  in dentry_open()
872 				f = ERR_PTR(error);  in dentry_open()
875 			put_filp(f);  in dentry_open()
876 			f = ERR_PTR(error);  in dentry_open()
879 	return f;  in dentry_open()
1019 		struct file *f = do_filp_open(dfd, tmp, &op);  in do_sys_open()  local
1020 		if (IS_ERR(f)) {  in do_sys_open()
1022 			fd = PTR_ERR(f);  in do_sys_open()
1024 			fsnotify_open(f);  in do_sys_open()
1025 			fd_install(fd, f);  in do_sys_open()