[libvirt] [PATCH v4 26/31] util: arptable: use VIR_AUTOFREE instead of VIR_FREE for scalar types
By making use of GNU C's cleanup attribute handled by the
VIR_AUTOFREE macro for declaring scalar variables, majority
of the VIR_FREE calls can be dropped, which in turn leads to
getting rid of most of our cleanup sections.
Signed-off-by: Sukrit Bhatnagar <skrtbhtngr(a)gmail.com>
Reviewed-by: Erik Skultety <eskultet(a)redhat.com>
---
src/util/virarptable.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
diff --git a/src/util/virarptable.c b/src/util/virarptable.c
index c0e90dc..04a6f35 100644
--- a/src/util/virarptable.c
+++ b/src/util/virarptable.c
@@ -71,9 +71,8 @@ virArpTableGet(void)
{
int num = 0;
int msglen;
- void *nlData = NULL;
+ VIR_AUTOFREE(void *) nlData = NULL;
virArpTablePtr table = NULL;
- char *ipstr = NULL;
struct nlmsghdr* nh;
struct rtattr * tb[NDA_MAX+1];
@@ -108,7 +107,7 @@ virArpTableGet(void)
continue;
if (nh->nlmsg_type == NLMSG_DONE)
- goto end_of_netlink_messages;
+ return table;
VIR_WARNINGS_NO_CAST_ALIGN
parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
@@ -119,6 +118,7 @@ virArpTableGet(void)
continue;
if (tb[NDA_DST]) {
+ VIR_AUTOFREE(char *) ipstr = NULL;
virSocketAddr virAddr;
if (VIR_REALLOC_N(table->t, num + 1) < 0)
goto cleanup;
@@ -134,8 +134,6 @@ virArpTableGet(void)
if (VIR_STRDUP(table->t[num].ipaddr, ipstr) < 0)
goto cleanup;
-
- VIR_FREE(ipstr);
}
if (tb[NDA_LLADDR]) {
@@ -154,14 +152,8 @@ virArpTableGet(void)
}
}
- end_of_netlink_messages:
- VIR_FREE(nlData);
- return table;
-
cleanup:
virArpTableFree(table);
- VIR_FREE(ipstr);
- VIR_FREE(nlData);
return NULL;
}
--
1.8.3.1