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storage: mpath: Clean up some error handling

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We were squashing error messages in a few cases. Recode to follow common
ret = -1 convention.

v2: Handle more error squashing issues further up in MakeNewVol and
    CreateVols. Use ret = -1 convention in MakeVols.
This commit is contained in:
Cole Robinson 2010-05-20 14:16:54 -04:00
parent bfa6b73e43
commit 5086f85cc1
1 changed files with 12 additions and 28 deletions
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40
src/storage/storage_backend_mpath.c
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@ -43,39 +43,26 @@ virStorageBackendMpathUpdateVolTargetInfo(virStorageVolTargetPtr target,
unsigned long long *allocation,
unsigned long long *capacity)
{
int ret = 0;
int ret = -1;
int fd = -1;
if ((fd = open(target->path, O_RDONLY)) < 0) {
virReportSystemError(errno,
_("cannot open volume '%s'"),
target->path);
ret = -1;
goto out;
}
if (virStorageBackendUpdateVolTargetInfoFD(target,
fd,
allocation,
capacity) < 0) {
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to update volume target info for '%s'"),
target->path);
ret = -1;
capacity) < 0)
goto out;
}
if (virStorageBackendUpdateVolTargetFormatFD(target, fd) < 0) {
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to update volume target format for '%s'"),
target->path);
ret = -1;
if (virStorageBackendUpdateVolTargetFormatFD(target, fd) < 0)
goto out;
}
ret = 0;
out:
if (fd != -1) {
close(fd);
@ -112,10 +99,6 @@ virStorageBackendMpathNewVol(virStoragePoolObjPtr pool,
if (virStorageBackendMpathUpdateVolTargetInfo(&vol->target,
&vol->allocation,
&vol->capacity) < 0) {
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to update volume for '%s'"),
vol->target.path);
goto cleanup;
}
@ -230,7 +213,7 @@ static int
virStorageBackendCreateVols(virStoragePoolObjPtr pool,
struct dm_names *names)
{
int retval = 0, is_mpath = 0;
int retval = -1, is_mpath = 0;
char *map_device = NULL;
uint32_t minor = -1;
@ -238,7 +221,6 @@ virStorageBackendCreateVols(virStoragePoolObjPtr pool,
is_mpath = virStorageBackendIsMultipath(names->name);
if (is_mpath < 0) {
retval = -1;
goto out;
}
@ -246,18 +228,19 @@ virStorageBackendCreateVols(virStoragePoolObjPtr pool,
if (virAsprintf(&map_device, "mapper/%s", names->name) < 0) {
virReportOOMError();
retval = -1;
goto out;
}
if (virStorageBackendGetMinorNumber(names->name, &minor) < 0) {
retval = -1;
virStorageReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to get %s minor number"),
names->name);
goto out;
}
virStorageBackendMpathNewVol(pool,
minor,
map_device);
if (virStorageBackendMpathNewVol(pool, minor, map_device) < 0) {
goto out;
}
VIR_FREE(map_device);
}
@ -268,6 +251,7 @@ virStorageBackendCreateVols(virStoragePoolObjPtr pool,
} while (names->next);
retval = 0;
out:
return retval;
}