/*ARGSUSED*/
static int
do_zvol_create(zfs_handle_t *zhp, void *data)
{
int ret;
if (ZFS_IS_VOLUME(zhp))
(void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name);
ret = zfs_iter_children(zhp, do_zvol_create, NULL);
zfs_close(zhp);
return (ret);
}
static int
do_zvol(zfs_handle_t *zhp, void *data)
{
int linktype = (int)(uintptr_t)data;
int ret;
/*
* We check for volblocksize intead of ZFS_TYPE_VOLUME so that we
* correctly handle snapshots of volumes.
*/
if (zhp->zfs_volblocksize != 0) {
if (linktype)
ret = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name);
else
ret = zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name);
}
ret = zfs_iter_children(zhp, do_zvol, data);
zfs_close(zhp);
return (ret);
}
/*
* If the property is 'mountpoint' or 'sharenfs', go through and remount and/or
* reshare the filesystems as necessary. In changelist_gather() we recorded
* whether the filesystem was previously shared or mounted. The action we take
* depends on the previous state, and whether the value was previously 'legacy'.
* For non-legacy properties, we only remount/reshare the filesystem if it was
* previously mounted/shared. Otherwise, we always remount/reshare the
* filesystem.
*/
int
changelist_postfix(prop_changelist_t *clp)
{
prop_changenode_t *cn;
char shareopts[ZFS_MAXPROPLEN];
int ret = 0;
libzfs_handle_t *hdl;
/*
* If we're changing the mountpoint, attempt to destroy the underlying
* mountpoint. All other datasets will have inherited from this dataset
* (in which case their mountpoints exist in the filesystem in the new
* location), or have explicit mountpoints set (in which case they won't
* be in the changelist).
*/
if ((cn = uu_list_last(clp->cl_list)) == NULL)
return (0);
if (clp->cl_prop == ZFS_PROP_MOUNTPOINT)
remove_mountpoint(cn->cn_handle);
/*
* It is possible that the changelist_prefix() used libshare
* to unshare some entries. Since libshare caches data, an
* attempt to reshare during postfix can fail unless libshare
* is uninitialized here so that it will reinitialize later.
*/
if (cn->cn_handle != NULL) {
hdl = cn->cn_handle->zfs_hdl;
assert(hdl != NULL);
#ifndef __APPLE__
zfs_uninit_libshare(hdl);
#endif
}
/*
* We walk the datasets in reverse, because we want to mount any parent
* datasets before mounting the children.
*/
for (cn = uu_list_last(clp->cl_list); cn != NULL;
cn = uu_list_prev(clp->cl_list, cn)) {
boolean_t sharenfs;
#ifndef __APPLE__
/*
* If we are in the global zone, but this dataset is exported
* to a local zone, do nothing.
*/
if (getzoneid() == GLOBAL_ZONEID && cn->cn_zoned)
continue;
#endif /*!__APPLE__*/
zfs_refresh_properties(cn->cn_handle);
if (ZFS_IS_VOLUME(cn->cn_handle)) {
/*
* If we're doing a rename, recreate the /dev/zvol
* links.
*/
if (clp->cl_realprop == ZFS_PROP_NAME &&
zvol_create_link(cn->cn_handle->zfs_hdl,
cn->cn_handle->zfs_name) != 0) {
ret = -1;
} else if (cn->cn_shared ||
clp->cl_prop == ZFS_PROP_SHAREISCSI) {
if (zfs_prop_get(cn->cn_handle,
ZFS_PROP_SHAREISCSI, shareopts,
sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0 &&
strcmp(shareopts, "off") == 0) {
ret = zfs_unshare_iscsi(cn->cn_handle);
} else {
ret = zfs_share_iscsi(cn->cn_handle);
}
}
continue;
}
/*
* Remount if previously mounted or mountpoint was legacy,
* or sharenfs property is set.
*/
sharenfs = ((zfs_prop_get(cn->cn_handle, ZFS_PROP_SHARENFS,
shareopts, sizeof (shareopts), NULL, NULL, 0,
B_FALSE) == 0) && (strcmp(shareopts, "off") != 0));
if ((cn->cn_mounted || clp->cl_waslegacy || sharenfs) &&
!zfs_is_mounted(cn->cn_handle, NULL) &&
zfs_mount(cn->cn_handle, NULL, 0) != 0)
ret = -1;
/*
* We always re-share even if the filesystem is currently
* shared, so that we can adopt any new options.
*/
if (cn->cn_shared || clp->cl_waslegacy || sharenfs) {
if (sharenfs)
ret = zfs_share_nfs(cn->cn_handle);
else
ret = zfs_unshare_nfs(cn->cn_handle, NULL);
}
}
return (ret);
}
