static int
dodefault(const char *propname, int intsz, int numints, void *buf)
{
zfs_prop_t prop;
/*
* The setonce properties are read-only, BUT they still
* have a default value that can be used as the initial
* value.
*/
if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL ||
(zfs_prop_readonly(prop) && !zfs_prop_setonce(prop)))
return (SET_ERROR(ENOENT));
if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) {
if (intsz != 1)
return (SET_ERROR(EOVERFLOW));
(void) strncpy(buf, zfs_prop_default_string(prop),
numints);
} else {
if (intsz != 8 || numints < 1)
return (SET_ERROR(EOVERFLOW));
*(uint64_t *)buf = zfs_prop_default_numeric(prop);
}
return (0);
}
int
zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *propbuf,
size_t proplen, zfs_source_t *srctype)
{
uint64_t value;
char msg[1024], *strvalue;
nvlist_t *nvp;
zfs_source_t src = ZFS_SRC_NONE;
(void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
"cannot get property '%s'"), zpool_prop_to_name(prop));
if (zpool_get_version(zhp) < ZFS_VERSION_BOOTFS) {
zfs_error_aux(zhp->zpool_hdl,
dgettext(TEXT_DOMAIN, "pool must be "
"upgraded to support pool properties"));
return (zfs_error(zhp->zpool_hdl, EZFS_BADVERSION, msg));
}
if (zhp->zpool_props == NULL && zpool_get_all_props(zhp))
return (zfs_error(zhp->zpool_hdl, EZFS_POOLPROPS, msg));
/*
* the "name" property is special cased
*/
if (!zfs_prop_valid_for_type(prop, ZFS_TYPE_POOL) &&
prop != ZFS_PROP_NAME)
return (-1);
switch (prop) {
case ZFS_PROP_NAME:
(void) strlcpy(propbuf, zhp->zpool_name, proplen);
break;
case ZFS_PROP_BOOTFS:
if (nvlist_lookup_nvlist(zhp->zpool_props,
zpool_prop_to_name(prop), &nvp) != 0) {
strvalue = (char *)zfs_prop_default_string(prop);
if (strvalue == NULL)
strvalue = "-";
src = ZFS_SRC_DEFAULT;
} else {
VERIFY(nvlist_lookup_uint64(nvp,
ZFS_PROP_SOURCE, &value) == 0);
src = value;
VERIFY(nvlist_lookup_string(nvp, ZFS_PROP_VALUE,
&strvalue) == 0);
if (strlen(strvalue) >= proplen)
return (-1);
}
(void) strcpy(propbuf, strvalue);
break;
default:
return (-1);
}
if (srctype)
*srctype = src;
return (0);
}
