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util: netdevbridge: use VIR_AUTOPTR for aggregate types

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By making use of GNU C's cleanup attribute handled by the
VIR_AUTOPTR macro for declaring aggregate pointer variables,
majority of the calls to *Free functions can be dropped, which
in turn leads to getting rid of most of our cleanup sections.

Signed-off-by: Sukrit Bhatnagar <skrtbhtngr@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Sukrit Bhatnagar 2018-08-09 09:42:14 +05:30 committed by Erik Skultety
parent 3a90015238
commit 5266bb9165
1 changed files with 13 additions and 22 deletions
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35
src/util/virnetdevbridge.c
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@ -417,12 +417,11 @@ virNetDevBridgeCreate(const char *brname)
{
/* use a netlink RTM_NEWLINK message to create the bridge */
const char *type = "bridge";
int rc = -1;
struct nlmsgerr *err;
struct ifinfomsg ifinfo = { .ifi_family = AF_UNSPEC };
unsigned int recvbuflen;
struct nl_msg *nl_msg;
struct nlattr *linkinfo;
VIR_AUTOPTR(virNetlinkMsg) nl_msg = NULL;
VIR_AUTOFREE(struct nlmsghdr *) resp = NULL;
nl_msg = nlmsg_alloc_simple(RTM_NEWLINK,
@ -444,7 +443,7 @@ virNetDevBridgeCreate(const char *brname)
if (virNetlinkCommand(nl_msg, &resp, &recvbuflen, 0, 0,
NETLINK_ROUTE, 0) < 0) {
goto cleanup;
return -1;
}
if (recvbuflen < NLMSG_LENGTH(0) || resp == NULL)
@ -462,15 +461,14 @@ virNetDevBridgeCreate(const char *brname)
/* fallback to ioctl if netlink doesn't support creating
* bridges
*/
rc = virNetDevBridgeCreateWithIoctl(brname);
goto cleanup;
return virNetDevBridgeCreateWithIoctl(brname);
}
# endif
virReportSystemError(-err->error,
_("error creating bridge interface %s"),
brname);
goto cleanup;
return -1;
}
break;
@ -480,19 +478,16 @@ virNetDevBridgeCreate(const char *brname)
goto malformed_resp;
}
rc = 0;
cleanup:
nlmsg_free(nl_msg);
return rc;
return 0;
malformed_resp:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed netlink response message"));
goto cleanup;
return -1;
buffer_too_small:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("allocated netlink buffer is too small"));
goto cleanup;
return -1;
}
@ -1055,11 +1050,10 @@ static int
virNetDevBridgeFDBAddDel(const virMacAddr *mac, const char *ifname,
unsigned int flags, bool isAdd)
{
int ret = -1;
struct nlmsgerr *err;
unsigned int recvbuflen;
struct nl_msg *nl_msg;
struct ndmsg ndm = { .ndm_family = PF_BRIDGE, .ndm_state = NUD_NOARP };
VIR_AUTOPTR(virNetlinkMsg) nl_msg = NULL;
VIR_AUTOFREE(struct nlmsghdr *) resp = NULL;
if (virNetDevGetIndex(ifname, &ndm.ndm_ifindex) < 0)
@ -1103,7 +1097,7 @@ virNetDevBridgeFDBAddDel(const virMacAddr *mac, const char *ifname,
if (virNetlinkCommand(nl_msg, &resp, &recvbuflen, 0, 0,
NETLINK_ROUTE, 0) < 0) {
goto cleanup;
return -1;
}
if (recvbuflen < NLMSG_LENGTH(0) || resp == NULL)
goto malformed_resp;
@ -1116,7 +1110,7 @@ virNetDevBridgeFDBAddDel(const virMacAddr *mac, const char *ifname,
if (err->error) {
virReportSystemError(-err->error,
_("error adding fdb entry for %s"), ifname);
goto cleanup;
return -1;
}
break;
case NLMSG_DONE:
@ -1126,20 +1120,17 @@ virNetDevBridgeFDBAddDel(const virMacAddr *mac, const char *ifname,
goto malformed_resp;
}
ret = 0;
cleanup:
nlmsg_free(nl_msg);
return ret;
return 0;
malformed_resp:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("malformed netlink response message"));
goto cleanup;
return -1;
buffer_too_small:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("allocated netlink buffer is too small"));
goto cleanup;
return -1;
}