static int
zfs_do_list_ioctl(zfs_handle_t *zhp, int arg, zfs_cmd_t *zc)
{
int rc;
uint64_t orig_cookie;
orig_cookie = zc->zc_cookie;
top:
(void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name));
rc = ioctl(zhp->zfs_hdl->libzfs_fd, arg, zc);
if (rc == -1) {
switch (errno) {
case ENOMEM:
/* expand nvlist memory and try again */
if (zcmd_expand_dst_nvlist(zhp->zfs_hdl, zc) != 0) {
zcmd_free_nvlists(zc);
return (-1);
}
zc->zc_cookie = orig_cookie;
goto top;
/*
* An errno value of ESRCH indicates normal completion.
* If ENOENT is returned, then the underlying dataset
* has been removed since we obtained the handle.
*/
case ESRCH:
case ENOENT:
rc = 1;
break;
default:
rc = zfs_standard_error(zhp->zfs_hdl, errno,
dgettext(TEXT_DOMAIN,
"cannot iterate filesystems"));
break;
}
}
return (rc);
}
/*
* Loads the pool namespace, or re-loads it if the cache has changed.
*/
static int
namespace_reload(libzfs_handle_t *hdl)
{
nvlist_t *config;
config_node_t *cn;
nvpair_t *elem;
zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
void *cookie;
if (hdl->libzfs_ns_gen == 0) {
/*
* This is the first time we've accessed the configuration
* cache. Initialize the AVL tree and then fall through to the
* common code.
*/
if ((hdl->libzfs_ns_avlpool = uu_avl_pool_create("config_pool",
sizeof (config_node_t),
offsetof(config_node_t, cn_avl),
config_node_compare, UU_DEFAULT)) == NULL)
return (no_memory(hdl));
if ((hdl->libzfs_ns_avl = uu_avl_create(hdl->libzfs_ns_avlpool,
NULL, UU_DEFAULT)) == NULL)
return (no_memory(hdl));
}
if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
return (-1);
for (;;) {
zc.zc_cookie = hdl->libzfs_ns_gen;
//if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_CONFIGS, &zc) != 0) {
if (zfs_ioctl(hdl, ZFS_IOC_POOL_CONFIGS, &zc) != 0) {
switch (errno) {
case EEXIST:
/*
* The namespace hasn't changed.
*/
zcmd_free_nvlists(&zc);
return (0);
case ENOMEM:
if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
zcmd_free_nvlists(&zc);
return (-1);
}
break;
default:
zcmd_free_nvlists(&zc);
return (zfs_standard_error(hdl, errno,
dgettext(TEXT_DOMAIN, "failed to read "
"pool configuration")));
}
} else {
hdl->libzfs_ns_gen = zc.zc_cookie;
break;
}
}
if (zcmd_read_dst_nvlist(hdl, &zc, &config) != 0) {
zcmd_free_nvlists(&zc);
return (-1);
}
zcmd_free_nvlists(&zc);
/*
* Clear out any existing configuration information.
*/
cookie = NULL;
while ((cn = uu_avl_teardown(hdl->libzfs_ns_avl, &cookie)) != NULL) {
nvlist_free(cn->cn_config);
free(cn->cn_name);
free(cn);
}
elem = NULL;
while ((elem = nvlist_next_nvpair(config, elem)) != NULL) {
nvlist_t *child;
uu_avl_index_t where;
if ((cn = zfs_alloc(hdl, sizeof (config_node_t))) == NULL) {
nvlist_free(config);
return (-1);
}
if ((cn->cn_name = zfs_strdup(hdl,
nvpair_name(elem))) == NULL) {
free(cn);
nvlist_free(config);
return (-1);
}
verify(nvpair_value_nvlist(elem, &child) == 0);
if (nvlist_dup(child, &cn->cn_config, 0) != 0) {
free(cn->cn_name);
free(cn);
nvlist_free(config);
return (no_memory(hdl));
}
verify(uu_avl_find(hdl->libzfs_ns_avl, cn, NULL, &where)
== NULL);
uu_avl_insert(hdl->libzfs_ns_avl, cn, where);
}
nvlist_free(config);
return (0);
}
int
zfs_key_change(zfs_handle_t *zhp, boolean_t recursing, nvlist_t *props)
{
char errbuf[1024];
int ret;
zfs_cmd_t zc = { { 0 } };
char keysource[ZFS_MAXNAMELEN];
uint64_t crypt;
zprop_source_t propsrctype = ZPROP_SRC_NONE;
char propsrc[ZFS_MAXNAMELEN] = { 0 };
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
"cannot change wrapping key for '%s'"), zfs_get_name(zhp));
crypt = zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION);
if (crypt == ZIO_CRYPT_OFF) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"cannot change key when encryption=off"));
goto error;
}
switch (zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS)) {
case ZFS_CRYPT_KEY_NONE:
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"inconsistent state encryption enabled but "
"key not defined."));
return (zfs_error(zhp->zfs_hdl, EZFS_KEYERR, errbuf));
case ZFS_CRYPT_KEY_UNAVAILABLE:
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"load existing key first: 'zfs key -l <dataset>'."));
goto error;
}
(void) zfs_prop_get(zhp, ZFS_PROP_KEYSOURCE, keysource,
ZFS_MAXNAMELEN, &propsrctype, propsrc, ZFS_MAXNAMELEN, B_TRUE);
if (!(propsrctype & ZPROP_SRC_LOCAL ||
propsrctype & ZPROP_SRC_RECEIVED)) {
if (recursing)
return (0);
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"keysource property not local, change key on '%s'."),
propsrc);
goto error;
}
zhp->zfs_hdl->libzfs_crypt.zc_is_key_change = B_TRUE;
/*
* The only thing we currently expect in props is a keysource
* if we have props without keysource then that isn't valid.
*/
if (props != NULL) {
char *nkeysource;
ret = nvlist_lookup_string(props,
zfs_prop_to_name(ZFS_PROP_KEYSOURCE), (char **)&nkeysource);
if (ret != 0) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"invalid props for key change; expected "
"%s property missing."),
zfs_prop_to_name(ZFS_PROP_KEYSOURCE));
goto error;
}
(void) strlcpy(keysource, nkeysource, sizeof (keysource));
}
(void) strlcpy(zc.zc_name, zfs_get_name(zhp), sizeof (zc.zc_name));
zc.zc_crypto.zic_crypt = crypt;
if (!zfs_can_prompt_if_needed(keysource)) {
zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
"unable to prompt for new wrapping key."));
errno = ENOTTY;
goto error;
}
ret = key_hdl_to_zc(zhp->zfs_hdl, zhp, keysource, crypt, &zc,
ZFS_CRYPTO_KEY_CHANGE);
if (props != NULL) {
if (zcmd_write_src_nvlist(zhp->zfs_hdl, &zc, props) != 0)
goto error;
}
if (ret == 0) {
/* Send change to kernel */
ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CRYPTO_KEY_CHANGE, &zc);
zcmd_free_nvlists(&zc);
if (ret != 0) {
return (zfs_standard_error(zhp->zfs_hdl,
errno, errbuf));
}
zfs_refresh_properties(zhp);
return (ret);
}
error:
zcmd_free_nvlists(&zc);
return (zfs_error(zhp->zfs_hdl, EZFS_KEYERR, errbuf));
}
