[libvirt] [PATCH 2/6] storage: netfs: Split up and tidy up NFS storage pool source function
Extract the NFS related stuff into a separate function and tidy up the
rest of the code so we can reuse it to add gluster backend detection.
Additionally avoid reporting of errors from "showmount" and return an
empty source list instead. This will help when adding other detection
backends.
---
src/storage/storage_backend_fs.c | 53 +++++++++++++++++++++++-----------------
1 file changed, 31 insertions(+), 22 deletions(-)
diff --git a/src/storage/storage_backend_fs.c b/src/storage/storage_backend_fs.c
index 0f8da06..8fb03c5 100644
--- a/src/storage/storage_backend_fs.c
+++ b/src/storage/storage_backend_fs.c
@@ -242,10 +242,8 @@ virStorageBackendFileSystemNetFindPoolSourcesFunc(char **const
groups,
}
-static char *
-virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn ATTRIBUTE_UNUSED,
- const char *srcSpec,
- unsigned int flags)
+static void
+virStorageBackendFileSystemNetFindNFSPoolSources(virNetfsDiscoverState *state)
{
/*
* # showmount --no-headers -e HOSTNAME
@@ -261,6 +259,29 @@ virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn
ATTRIBUTE_UNUSE
int vars[] = {
1
};
+
+ virCommandPtr cmd = NULL;
+
+ cmd = virCommandNewArgList(SHOWMOUNT,
+ "--no-headers",
+ "--exports",
+ state->host,
+ NULL);
+
+ if (virCommandRunRegex(cmd, 1, regexes, vars,
+ virStorageBackendFileSystemNetFindPoolSourcesFunc,
+ &state, NULL) < 0)
+ virResetLastError();
+
+ virCommandFree(cmd);
+}
+
+
+static char *
+virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn ATTRIBUTE_UNUSED,
+ const char *srcSpec,
+ unsigned int flags)
+{
virNetfsDiscoverState state = {
.host = NULL,
.list = {
@@ -270,15 +291,14 @@ virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn
ATTRIBUTE_UNUSE
}
};
virStoragePoolSourcePtr source = NULL;
- char *retval = NULL;
+ char *ret = NULL;
size_t i;
- virCommandPtr cmd = NULL;
virCheckFlags(0, NULL);
if (!srcSpec) {
- virReportError(VIR_ERR_INVALID_ARG,
- "%s", _("hostname must be specified for netfs
sources"));
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("hostname must be specified for netfs sources"));
return NULL;
}
@@ -294,19 +314,9 @@ virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn
ATTRIBUTE_UNUSE
state.host = source->hosts[0].name;
- cmd = virCommandNewArgList(SHOWMOUNT,
- "--no-headers",
- "--exports",
- source->hosts[0].name,
- NULL);
+ virStorageBackendFileSystemNetFindNFSPoolSources(&state);
- if (virCommandRunRegex(cmd, 1, regexes, vars,
- virStorageBackendFileSystemNetFindPoolSourcesFunc,
- &state, NULL) < 0)
- goto cleanup;
-
- retval = virStoragePoolSourceListFormat(&state.list);
- if (retval == NULL)
+ if (!(ret = virStoragePoolSourceListFormat(&state.list)))
goto cleanup;
cleanup:
@@ -315,8 +325,7 @@ virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn
ATTRIBUTE_UNUSE
VIR_FREE(state.list.sources);
virStoragePoolSourceFree(source);
- virCommandFree(cmd);
- return retval;
+ return ret;
}
--
1.9.1