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virResctrlGetCacheInfo: Restrict variable scope and use automatic freeing

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Move variables into the loop which uses them and use automatic freeing
for temporarily allocated variables.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2021-03-23 17:11:42 +01:00
parent d9da007525
commit 01c335f7db
1 changed files with 13 additions and 17 deletions
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30
src/util/virresctrl.c
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@ -526,18 +526,19 @@ static int
virResctrlGetCacheInfo(virResctrlInfoPtr resctrl,
DIR *dirp)
{
char *endptr = NULL;
char *tmp_str = NULL;
int ret = -1;
int rv = -1;
int type = 0;
int ret = -1;
struct dirent *ent = NULL;
unsigned int level = 0;
virBitmapPtr tmp_map = NULL;
virResctrlInfoPerLevelPtr i_level = NULL;
virResctrlInfoPerTypePtr i_type = NULL;
while ((rv = virDirRead(dirp, &ent, SYSFS_RESCTRL_PATH "/info")) > 0) {
g_autofree char *cbm_mask_str = NULL;
g_autoptr(virBitmap) cbm_mask_map = NULL;
char *endptr = NULL;
int type = 0;
unsigned int level = 0;
virResctrlInfoPerLevelPtr i_level = NULL;
g_autofree virResctrlInfoPerTypePtr i_type = NULL;
VIR_DEBUG("Parsing info type '%s'", ent->d_name);
if (ent->d_name[0] != 'L')
continue;
@ -570,7 +571,7 @@ virResctrlGetCacheInfo(virResctrlInfoPtr resctrl,
goto cleanup;
}
rv = virFileReadValueString(&tmp_str,
rv = virFileReadValueString(&cbm_mask_str,
SYSFS_RESCTRL_PATH
"/info/%s/cbm_mask",
ent->d_name);
@ -585,19 +586,15 @@ virResctrlGetCacheInfo(virResctrlInfoPtr resctrl,
if (rv < 0)
goto cleanup;
virStringTrimOptionalNewline(tmp_str);
virStringTrimOptionalNewline(cbm_mask_str);
tmp_map = virBitmapNewString(tmp_str);
VIR_FREE(tmp_str);
if (!tmp_map) {
if (!(cbm_mask_map = virBitmapNewString(cbm_mask_str))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot parse cbm_mask from resctrl cache info"));
goto cleanup;
}
i_type->bits = virBitmapCountBits(tmp_map);
virBitmapFree(tmp_map);
tmp_map = NULL;
i_type->bits = virBitmapCountBits(cbm_mask_map);
rv = virFileReadValueUint(&i_type->min_cbm_bits,
SYSFS_RESCTRL_PATH "/info/%s/min_cbm_bits",
@ -635,7 +632,6 @@ virResctrlGetCacheInfo(virResctrlInfoPtr resctrl,
ret = 0;
cleanup:
VIR_FREE(i_type);
return ret;
}