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storage: avoid memory leak 

Coverity detected that options was being set by strdup but never
freed.  But why even bother with an options variable?  The options
parameter never changes!  Leak present since commit 44948f5b (0.7.0).

This function could probably be rewritten to take better advantage
of virCommand, but that is more invasive.

* src/storage/storage_backend_fs.c
(virStorageBackendFileSystemMount): Avoid wasted strdup, and
guarantee proper cleanup on all paths.
This commit is contained in:
Eric Blake 2011-06-02 16:08:28 -06:00
parent ef21bedaf9
commit 9892f7bca0
1 changed files with 1 additions and 14 deletions
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15
src/storage/storage_backend_fs.c
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@ -317,7 +317,6 @@ virStorageBackendFileSystemIsMounted(virStoragePoolObjPtr pool) {
static int
virStorageBackendFileSystemMount(virStoragePoolObjPtr pool) {
char *src;
char *options = NULL;
const char **mntargv;
/* 'mount -t auto' doesn't seem to auto determine nfs (or cifs),
@ -328,7 +327,6 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool) {
int glusterfs = (pool->def->type == VIR_STORAGE_POOL_NETFS &&
pool->def->source.format == VIR_STORAGE_POOL_NETFS_GLUSTERFS);
int option_index;
int source_index;
const char *netfs_auto_argv[] = {
@ -358,7 +356,7 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool) {
virStoragePoolFormatFileSystemNetTypeToString(pool->def->source.format),
NULL,
"-o",
NULL,
"direct-io-mode=1",
pool->def->target.path,
NULL,
};
@ -369,7 +367,6 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool) {
} else if (glusterfs) {
mntargv = glusterfs_argv;
source_index = 3;
option_index = 5;
} else {
mntargv = fs_argv;
source_index = 3;
@ -405,12 +402,6 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool) {
}
if (pool->def->type == VIR_STORAGE_POOL_NETFS) {
if (pool->def->source.format == VIR_STORAGE_POOL_NETFS_GLUSTERFS) {
if ((options = strdup("direct-io-mode=1")) == NULL) {
virReportOOMError();
return -1;
}
}
if (virAsprintf(&src, "%s:%s",
pool->def->source.host.name,
pool->def->source.dir) == -1) {
@ -426,10 +417,6 @@ virStorageBackendFileSystemMount(virStoragePoolObjPtr pool) {
}
mntargv[source_index] = src;
if (glusterfs) {
mntargv[option_index] = options;
}
if (virRun(mntargv, NULL) < 0) {
VIR_FREE(src);
return -1;