/*
* Called when the module is first loaded, this routine loads the configuration
* file into the SPA namespace. It does not actually open or load the pools; it
* only populates the namespace.
*/
void
spa_config_load(void)
{
void *buf = NULL;
nvlist_t *nvlist, *child;
nvpair_t *nvpair;
spa_t *spa;
char pathname[128];
struct _buf *file;
struct bootstat bst;
/*
* Open the configuration file.
*/
(void) snprintf(pathname, sizeof (pathname), "%s%s/%s",
(rootdir != NULL) ? "./" : "", spa_config_dir, ZPOOL_CACHE_FILE);
file = kobj_open_file(pathname);
if (file == (struct _buf *)-1)
return;
if (kobj_fstat(file->_fd, &bst) != 0)
goto out;
buf = kmem_alloc(bst.st_size, KM_SLEEP);
/*
* Read the nvlist from the file.
*/
if (kobj_read_file(file, buf, bst.st_size, 0) < 0)
goto out;
/*
* Unpack the nvlist.
*/
if (nvlist_unpack(buf, bst.st_size, &nvlist, KM_SLEEP) != 0)
goto out;
/*
* Iterate over all elements in the nvlist, creating a new spa_t for
* each one with the specified configuration.
*/
mutex_enter(&spa_namespace_lock);
nvpair = NULL;
while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) {
if (nvpair_type(nvpair) != DATA_TYPE_NVLIST)
continue;
VERIFY(nvpair_value_nvlist(nvpair, &child) == 0);
if (spa_lookup(nvpair_name(nvpair)) != NULL)
continue;
spa = spa_add(nvpair_name(nvpair), NULL);
/*
* We blindly duplicate the configuration here. If it's
* invalid, we will catch it when the pool is first opened.
*/
VERIFY(nvlist_dup(child, &spa->spa_config, 0) == 0);
}
mutex_exit(&spa_namespace_lock);
nvlist_free(nvlist);
out:
if (buf != NULL)
kmem_free(buf, bst.st_size);
kobj_close_file(file);
}
/*
* Called when the module is first loaded, this routine loads the configuration
* file into the SPA namespace. It does not actually open or load the pools; it
* only populates the namespace.
*/
void
spa_config_load(void)
{
void *buf = NULL;
nvlist_t *nvlist, *child;
nvpair_t *nvpair;
char *pathname;
struct _buf *file;
uint64_t fsize;
/*
* Open the configuration file.
*/
pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP);
(void) snprintf(pathname, MAXPATHLEN, "%s", spa_config_path);
file = kobj_open_file(pathname);
kmem_free(pathname, MAXPATHLEN);
if (file == (struct _buf *)-1)
return;
if (kobj_get_filesize(file, &fsize) != 0)
goto out;
buf = kmem_alloc(fsize, KM_SLEEP);
/*
* Read the nvlist from the file.
*/
if (kobj_read_file(file, buf, fsize, 0) < 0)
goto out;
/*
* Unpack the nvlist.
*/
if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0)
goto out;
/*
* Iterate over all elements in the nvlist, creating a new spa_t for
* each one with the specified configuration.
*/
mutex_enter(&spa_namespace_lock);
nvpair = NULL;
while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) {
if (nvpair_type(nvpair) != DATA_TYPE_NVLIST)
continue;
VERIFY(nvpair_value_nvlist(nvpair, &child) == 0);
if (spa_lookup(nvpair_name(nvpair)) != NULL)
continue;
(void) spa_add(nvpair_name(nvpair), child, NULL);
}
mutex_exit(&spa_namespace_lock);
nvlist_free(nvlist);
out:
if (buf != NULL)
kmem_free(buf, fsize);
kobj_close_file(file);
}