C++ (Cpp) dm_task_set_mode示例

示例#1

文件： devmapper.c 项目： hreinecke/multipath-tools

int dm_addmap(int task, const char *name, const char *target,
	      const char *params, uint64_t size, int ro, const char *uuid,
	      int part, mode_t mode, uid_t uid, gid_t gid)
{
	int r = 0;
	struct dm_task *dmt;
	char *prefixed_uuid = NULL;
#ifdef LIBDM_API_COOKIE
	uint32_t cookie = 0;
	uint16_t udev_flags = 0;
#endif

	if (!(dmt = dm_task_create (task)))
		return 0;

	if (!dm_task_set_name (dmt, name))
		goto addout;

	if (!dm_task_add_target (dmt, 0, size, target, params))
		goto addout;

	if (ro && !dm_task_set_ro (dmt))
			goto addout;

	if (task == DM_DEVICE_CREATE && uuid) {
		prefixed_uuid = make_prefixed_uuid(part, uuid);
		if (prefixed_uuid == NULL)
			goto addout;
		if (!dm_task_set_uuid(dmt, prefixed_uuid))
			goto addout;
	}

	if (!dm_task_set_mode(dmt, mode))
		goto addout;
	if (!dm_task_set_uid(dmt, uid))
		goto addout;
	if (!dm_task_set_gid(dmt, gid))
		goto addout;

	dm_task_no_open_count(dmt);

#ifdef LIBDM_API_COOKIE
	if (!udev_sync)
		udev_flags = DM_UDEV_DISABLE_LIBRARY_FALLBACK;
	if (task == DM_DEVICE_CREATE &&
	    !dm_task_set_cookie(dmt, &cookie, udev_flags))
		goto addout;
#endif
	r = dm_task_run (dmt);
#ifdef LIBDM_API_COOKIE
	if (task == DM_DEVICE_CREATE)
			dm_udev_wait(cookie);
#endif
addout:
	dm_task_destroy (dmt);
	free(prefixed_uuid);

	return r;
}

示例#2

文件： devmapper.c 项目： cathay4t/multipath-tools

static int
dm_addmap (int task, const char *target, struct multipath *mpp,
	   char * params, int ro) {
	int r = 0;
	struct dm_task *dmt;
	char *prefixed_uuid = NULL;
	uint32_t cookie = 0;

	if (!(dmt = dm_task_create (task)))
		return 0;

	if (!dm_task_set_name (dmt, mpp->alias))
		goto addout;

	if (!dm_task_add_target (dmt, 0, mpp->size, target, params))
		goto addout;

	if (ro)
		dm_task_set_ro(dmt);

	if (task == DM_DEVICE_CREATE) {
		if (strlen(mpp->wwid) > 0) {
			prefixed_uuid = MALLOC(UUID_PREFIX_LEN +
					       strlen(mpp->wwid) + 1);
			if (!prefixed_uuid) {
				condlog(0, "cannot create prefixed uuid : %s",
					strerror(errno));
				goto addout;
			}
			sprintf(prefixed_uuid, UUID_PREFIX "%s", mpp->wwid);
			if (!dm_task_set_uuid(dmt, prefixed_uuid))
				goto freeout;
		}
		dm_task_skip_lockfs(dmt);
#ifdef LIBDM_API_FLUSH
		dm_task_no_flush(dmt);
#endif
	}

	if (mpp->attribute_flags & (1 << ATTR_MODE) &&
	    !dm_task_set_mode(dmt, mpp->mode))
		goto freeout;
	if (mpp->attribute_flags & (1 << ATTR_UID) &&
	    !dm_task_set_uid(dmt, mpp->uid))
		goto freeout;
	if (mpp->attribute_flags & (1 << ATTR_GID) &&
	    !dm_task_set_gid(dmt, mpp->gid))
		goto freeout;
	condlog(4, "%s: %s [0 %llu %s %s]", mpp->alias,
		task == DM_DEVICE_RELOAD ? "reload" : "addmap", mpp->size,
		target, params);

	dm_task_no_open_count(dmt);

	if (task == DM_DEVICE_CREATE &&
	    !dm_task_set_cookie(dmt, &cookie,
				DM_UDEV_DISABLE_LIBRARY_FALLBACK))
		goto freeout;

	r = dm_task_run (dmt);

	if (task == DM_DEVICE_CREATE)
			dm_udev_wait(cookie);
freeout:
	if (prefixed_uuid)
		FREE(prefixed_uuid);

addout:
	dm_task_destroy (dmt);

	return r;
}