fs/autofs/dev-ioctl.c

56 static int check_dev_ioctl_version(int cmd, struct autofs_dev_ioctl *param)
60 	if ((param->ver_major != AUTOFS_DEV_IOCTL_VERSION_MAJOR) ||
61 	    (param->ver_minor > AUTOFS_DEV_IOCTL_VERSION_MINOR)) {
66 			param->ver_major, param->ver_minor, cmd);
71 	param->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR;
72 	param->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR;
102 static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)
104 	kfree(param);
111 static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
115 	err = check_dev_ioctl_version(cmd, param);
122 	if (param->size > AUTOFS_DEV_IOCTL_SIZE) {
123 		err = invalid_str(param->path, param->size - AUTOFS_DEV_IOCTL_SIZE);
131 		err = check_name(param->path);
156 				    struct autofs_dev_ioctl *param)
159 	param->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR;
160 	param->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR;
167 				     struct autofs_dev_ioctl *param)
169 	param->protover.version = sbi->version;
176 					struct autofs_dev_ioctl *param)
178 	param->protosubver.sub_version = sbi->sub_version;
260 				      struct autofs_dev_ioctl *param)
266 	/* param->path has been checked in validate_dev_ioctl() */
268 	if (!param->openmount.devid)
271 	param->ioctlfd = -1;
273 	path = param->path;
274 	devid = new_decode_dev(param->openmount.devid);
283 	param->ioctlfd = fd;
291 				       struct autofs_dev_ioctl *param)
293 	return close_fd(param->ioctlfd);
302 				  struct autofs_dev_ioctl *param)
306 	token = (autofs_wqt_t) param->ready.token;
316 				 struct autofs_dev_ioctl *param)
321 	token = (autofs_wqt_t) param->fail.token;
322 	status = param->fail.status < 0 ? param->fail.status : -ENOENT;
340 				      struct autofs_dev_ioctl *param)
346 	if (param->setpipefd.pipefd == -1)
349 	pipefd = param->setpipefd.pipefd;
393 				      struct autofs_dev_ioctl *param)
402 				    struct autofs_dev_ioctl *param)
406 	timeout = param->timeout.timeout;
407 	param->timeout.timeout = sbi->exp_timeout / HZ;
422 				      struct autofs_dev_ioctl *param)
429 	/* param->path has been checked in validate_dev_ioctl() */
433 	param->requester.uid = param->requester.gid = -1;
435 	err = find_autofs_mount(param->path, &path, test_by_dev, &devid);
444 		param->requester.uid =
446 		param->requester.gid =
461 				   struct autofs_dev_ioctl *param)
466 	how = param->expire.how;
475 				      struct autofs_dev_ioctl *param)
477 	param->askumount.may_umount = 0;
479 		param->askumount.may_umount = 1;
506 					 struct autofs_dev_ioctl *param)
514 	/* param->path has been checked in validate_dev_ioctl() */
516 	name = param->path;
517 	type = param->ismountpoint.in.type;
519 	param->ismountpoint.out.devid = devid = 0;
520 	param->ismountpoint.out.magic = magic = 0;
522 	if (!fp || param->ioctlfd == -1) {
552 	param->ismountpoint.out.devid = devid;
553 	param->ismountpoint.out.magic = magic;
596 	struct autofs_dev_ioctl *param;
620 	param = copy_dev_ioctl(user);
621 	if (IS_ERR(param))
622 		return PTR_ERR(param);
624 	err = validate_dev_ioctl(command, param);
649 		fp = fget(param->ioctlfd);
677 	err = fn(fp, sbi, param);
681 	if (err >= 0 && copy_to_user(user, param, AUTOFS_DEV_IOCTL_SIZE))
684 	free_dev_ioctl(param);