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storage: Extract out mount command creation for FS Backend

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Extract out the code that is used to create the MOUNT command
for starting the pool. We can use this for Storage Pool XML
to Argv testing to ensure code changes don't alter how a
storage pool is started.

Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
John Ferlan 2018-12-04 06:28:34 -05:00
parent c658764dec
commit 1bebb904fe
1 changed files with 41 additions and 29 deletions
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70
src/storage/storage_backend_fs.c
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@ -330,19 +330,11 @@ virStorageBackendFileSystemIsMounted(virStoragePoolObjPtr pool)
return ret;
}
/**
* @pool storage pool to mount
*
* Ensure that a FS storage pool is mounted on its target location.
* If already mounted, this is a no-op
*
* Returns 0 if successfully mounted, -1 on error
*/
static int
virStorageBackendFileSystemMount(virStoragePoolObjPtr pool)
static virCommandPtr
virStorageBackendFileSystemMountCmd(virStoragePoolDefPtr def,
const char *src)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(pool);
char *src = NULL;
/* 'mount -t auto' doesn't seem to auto determine nfs (or cifs),
* while plain 'mount' does. We have to craft separate argvs to
* accommodate this */
@ -353,23 +345,6 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool)
bool cifsfs = (def->type == VIR_STORAGE_POOL_NETFS &&
def->source.format == VIR_STORAGE_POOL_NETFS_CIFS);
virCommandPtr cmd = NULL;
int ret = -1;
int rc;
if (virStorageBackendFileSystemIsValid(pool) < 0)
return -1;
if ((rc = virStorageBackendFileSystemIsMounted(pool)) < 0)
return -1;
/* Short-circuit if already mounted */
if (rc == 1) {
VIR_INFO("Target '%s' is already mounted", def->target.path);
return 0;
}
if (!(src = virStorageBackendFileSystemGetPoolSource(pool)))
return -1;
if (netauto)
cmd = virCommandNewArgList(MOUNT,
@ -404,6 +379,43 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool)
def->target.path,
NULL);
return cmd;
}
/**
* @pool storage pool to mount
*
* Ensure that a FS storage pool is mounted on its target location.
* If already mounted, this is a no-op
*
* Returns 0 if successfully mounted, -1 on error
*/
static int
virStorageBackendFileSystemMount(virStoragePoolObjPtr pool)
{
virStoragePoolDefPtr def = virStoragePoolObjGetDef(pool);
char *src = NULL;
virCommandPtr cmd = NULL;
int ret = -1;
int rc;
if (virStorageBackendFileSystemIsValid(pool) < 0)
return -1;
if ((rc = virStorageBackendFileSystemIsMounted(pool)) < 0)
return -1;
/* Short-circuit if already mounted */
if (rc == 1) {
VIR_INFO("Target '%s' is already mounted", def->target.path);
return 0;
}
if (!(src = virStorageBackendFileSystemGetPoolSource(pool)))
return -1;
cmd = virStorageBackendFileSystemMountCmd(def, src);
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;