156 	struct fd f;  in do_sys_ftruncate()  local
163 	f = fdget(fd);  in do_sys_ftruncate()
164 	if (!f.file)  in do_sys_ftruncate()
168 	if (f.file->f_flags & O_LARGEFILE)  in do_sys_ftruncate()
171 	dentry = f.file->f_path.dentry;  in do_sys_ftruncate()
174 	if (!S_ISREG(inode->i_mode) || !(f.file->f_mode & FMODE_WRITE))  in do_sys_ftruncate()
187 	error = locks_verify_truncate(inode, f.file, length);  in do_sys_ftruncate()
189 		error = security_path_truncate(&f.file->f_path);  in do_sys_ftruncate()
191 		error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, f.file);  in do_sys_ftruncate()
194 	fdput(f);  in do_sys_ftruncate()
320 	struct fd f = fdget(fd);  in SYSCALL_DEFINE4()  local
323 	if (f.file) {  in SYSCALL_DEFINE4()
324 		error = vfs_fallocate(f.file, mode, offset, len);  in SYSCALL_DEFINE4()
325 		fdput(f);  in SYSCALL_DEFINE4()
444 	struct fd f = fdget_raw(fd);  in SYSCALL_DEFINE1()  local
449 	if (!f.file)  in SYSCALL_DEFINE1()
452 	inode = file_inode(f.file);  in SYSCALL_DEFINE1()
460 		set_fs_pwd(current->fs, &f.file->f_path);  in SYSCALL_DEFINE1()
462 	fdput(f);  in SYSCALL_DEFINE1()
531 	struct fd f = fdget(fd);  in SYSCALL_DEFINE2()  local
534 	if (f.file) {  in SYSCALL_DEFINE2()
535 		audit_file(f.file);  in SYSCALL_DEFINE2()
536 		err = chmod_common(&f.file->f_path, mode);  in SYSCALL_DEFINE2()
537 		fdput(f);  in SYSCALL_DEFINE2()
652 	struct fd f = fdget(fd);  in SYSCALL_DEFINE3()  local
655 	if (!f.file)  in SYSCALL_DEFINE3()
658 	error = mnt_want_write_file(f.file);  in SYSCALL_DEFINE3()
661 	audit_file(f.file);  in SYSCALL_DEFINE3()
662 	error = chown_common(&f.file->f_path, user, group);  in SYSCALL_DEFINE3()
663 	mnt_drop_write_file(f.file);  in SYSCALL_DEFINE3()
665 	fdput(f);  in SYSCALL_DEFINE3()
670 int open_check_o_direct(struct file *f)  in open_check_o_direct()  argument
673 	if (f->f_flags & O_DIRECT) {  in open_check_o_direct()
674 		if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO)  in open_check_o_direct()
680 static int do_dentry_open(struct file *f,  in do_dentry_open()  argument
688 	f->f_mode = OPEN_FMODE(f->f_flags) | FMODE_LSEEK |  in do_dentry_open()
691 	path_get(&f->f_path);  in do_dentry_open()
692 	f->f_inode = inode;  in do_dentry_open()
693 	f->f_mapping = inode->i_mapping;  in do_dentry_open()
695 	if (unlikely(f->f_flags & O_PATH)) {  in do_dentry_open()
696 		f->f_mode = FMODE_PATH;  in do_dentry_open()
697 		f->f_op = &empty_fops;  in do_dentry_open()
701 	if (f->f_mode & FMODE_WRITE && !special_file(inode->i_mode)) {  in do_dentry_open()
705 		error = __mnt_want_write(f->f_path.mnt);  in do_dentry_open()
710 		f->f_mode |= FMODE_WRITER;  in do_dentry_open()
715 		f->f_mode |= FMODE_ATOMIC_POS;  in do_dentry_open()
717 	f->f_op = fops_get(inode->i_fop);  in do_dentry_open()
718 	if (unlikely(WARN_ON(!f->f_op))) {  in do_dentry_open()
723 	error = security_file_open(f, cred);  in do_dentry_open()
727 	error = break_lease(inode, f->f_flags);  in do_dentry_open()
732 		open = f->f_op->open;  in do_dentry_open()
734 		error = open(inode, f);  in do_dentry_open()
738 	if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)  in do_dentry_open()
740 	if ((f->f_mode & FMODE_READ) &&  in do_dentry_open()
741 	     likely(f->f_op->read || f->f_op->read_iter))  in do_dentry_open()
742 		f->f_mode |= FMODE_CAN_READ;  in do_dentry_open()
743 	if ((f->f_mode & FMODE_WRITE) &&  in do_dentry_open()
744 	     likely(f->f_op->write || f->f_op->write_iter))  in do_dentry_open()
745 		f->f_mode |= FMODE_CAN_WRITE;  in do_dentry_open()
747 	f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);  in do_dentry_open()
749 	file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);  in do_dentry_open()
754 	fops_put(f->f_op);  in do_dentry_open()
755 	if (f->f_mode & FMODE_WRITER) {  in do_dentry_open()
757 		__mnt_drop_write(f->f_path.mnt);  in do_dentry_open()
760 	path_put(&f->f_path);  in do_dentry_open()
761 	f->f_path.mnt = NULL;  in do_dentry_open()
762 	f->f_path.dentry = NULL;  in do_dentry_open()
763 	f->f_inode = NULL;  in do_dentry_open()
852 	struct file *f;  in dentry_open()  local
859 	f = get_empty_filp();  in dentry_open()
860 	if (!IS_ERR(f)) {  in dentry_open()
861 		f->f_flags = flags;  in dentry_open()
862 		error = vfs_open(path, f, cred);  in dentry_open()
865 			error = open_check_o_direct(f);  in dentry_open()
867 				fput(f);  in dentry_open()
868 				f = ERR_PTR(error);  in dentry_open()
871 			put_filp(f);  in dentry_open()
872 			f = ERR_PTR(error);  in dentry_open()
875 	return f;  in dentry_open()
1015 		struct file *f = do_filp_open(dfd, tmp, &op);  in do_sys_open()  local
1016 		if (IS_ERR(f)) {  in do_sys_open()
1018 			fd = PTR_ERR(f);  in do_sys_open()
1020 			fsnotify_open(f);  in do_sys_open()
1021 			fd_install(fd, f);  in do_sys_open()