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>
---
src/util/viriscsi.c | 68 +++++++++++++++++------------------------------------
1 file changed, 22 insertions(+), 46 deletions(-)
diff --git a/src/util/viriscsi.c b/src/util/viriscsi.c
index 48f4106..81404f8 100644
--- a/src/util/viriscsi.c
+++ b/src/util/viriscsi.c
@@ -91,7 +91,7 @@ virISCSIGetSession(const char *devpath,
VIR_AUTOFREE(char *) error = NULL;
int exitstatus = 0;
- virCommandPtr cmd = virCommandNewArgList(ISCSIADM, "--mode",
+ VIR_AUTOPTR(virCommand) cmd = virCommandNewArgList(ISCSIADM, "--mode",
"session", NULL);
virCommandSetErrorBuffer(cmd, &error);
@@ -101,15 +101,13 @@ virISCSIGetSession(const char *devpath,
vars,
virISCSIExtractSession,
&cbdata, NULL, &exitstatus) < 0)
- goto cleanup;
+ return NULL;
if (cbdata.session == NULL && !probe)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find iscsiadm session: %s"),
NULLSTR(error));
- cleanup:
- virCommandFree(cmd);
return cbdata.session;
}
@@ -128,7 +126,7 @@ virStorageBackendIQNFound(const char *initiatoriqn,
VIR_AUTOFREE(char *) outbuf = NULL;
VIR_AUTOFREE(char *) iface = NULL;
VIR_AUTOFREE(char *) iqn = NULL;
- virCommandPtr cmd = virCommandNewArgList(ISCSIADM,
+ VIR_AUTOPTR(virCommand) cmd = virCommandNewArgList(ISCSIADM,
"--mode", "iface", NULL);
*ifacename = NULL;
@@ -196,7 +194,6 @@ virStorageBackendIQNFound(const char *initiatoriqn,
if (ret == IQN_MISSING)
VIR_DEBUG("Could not find interface with IQN '%s'", iqn);
- virCommandFree(cmd);
return ret;
error:
@@ -213,7 +210,7 @@ virStorageBackendCreateIfaceIQN(const char *initiatoriqn,
{
int ret = -1, exitstatus = -1;
VIR_AUTOFREE(char *) temp_ifacename = NULL;
- virCommandPtr cmd = NULL;
+ VIR_AUTOPTR(virCommand) cmd = NULL;
if (virAsprintf(&temp_ifacename,
"libvirt-iface-%08llx",
@@ -272,7 +269,6 @@ virStorageBackendCreateIfaceIQN(const char *initiatoriqn,
ret = 0;
cleanup:
- virCommandFree(cmd);
if (ret != 0)
VIR_FREE(*ifacename);
return ret;
@@ -285,7 +281,6 @@ virISCSIConnection(const char *portal,
const char *target,
const char **extraargv)
{
- int ret = -1;
const char *const baseargv[] = {
ISCSIADM,
"--mode", "node",
@@ -293,7 +288,7 @@ virISCSIConnection(const char *portal,
"--targetname", target,
NULL
};
- virCommandPtr cmd;
+ VIR_AUTOPTR(virCommand) cmd = NULL;
VIR_AUTOFREE(char *) ifacename = NULL;
cmd = virCommandNewArgs(baseargv);
@@ -306,7 +301,7 @@ virISCSIConnection(const char *portal,
break;
case IQN_MISSING:
if (virStorageBackendCreateIfaceIQN(initiatoriqn, &ifacename) != 0)
- goto cleanup;
+ return -1;
/*
* iscsiadm doesn't let you send commands to the Interface IQN,
* unless you've first issued a 'sendtargets' command to the
@@ -317,25 +312,20 @@ virISCSIConnection(const char *portal,
*/
if (virISCSIScanTargetsInternal(portal, ifacename,
true, NULL, NULL) < 0)
- goto cleanup;
+ return -1;
break;
case IQN_ERROR:
default:
- goto cleanup;
+ return -1;
}
virCommandAddArgList(cmd, "--interface", ifacename, NULL);
}
if (virCommandRun(cmd, NULL) < 0)
- goto cleanup;
+ return -1;
- ret = 0;
-
- cleanup:
- virCommandFree(cmd);
-
- return ret;
+ return 0;
}
@@ -362,14 +352,12 @@ virISCSIConnectionLogout(const char *portal,
int
virISCSIRescanLUNs(const char *session)
{
- virCommandPtr cmd = virCommandNewArgList(ISCSIADM,
+ VIR_AUTOPTR(virCommand) cmd = virCommandNewArgList(ISCSIADM,
"--mode", "session",
"-r", session,
"-R",
NULL);
- int ret = virCommandRun(cmd, NULL);
- virCommandFree(cmd);
- return ret;
+ return virCommandRun(cmd, NULL);
}
@@ -419,8 +407,7 @@ virISCSIScanTargetsInternal(const char *portal,
int vars[] = { 2 };
struct virISCSITargetList list;
size_t i;
- int ret = -1;
- virCommandPtr cmd = virCommandNewArgList(ISCSIADM,
+ VIR_AUTOPTR(virCommand) cmd = virCommandNewArgList(ISCSIADM,
"--mode", "discovery",
"--type", "sendtargets",
"--portal", portal,
@@ -446,7 +433,7 @@ virISCSIScanTargetsInternal(const char *portal,
vars,
virISCSIGetTargets,
&list, NULL, NULL) < 0)
- goto cleanup;
+ return -1;
if (ntargetsret && targetsret) {
*ntargetsret = list.ntargets;
@@ -457,10 +444,7 @@ virISCSIScanTargetsInternal(const char *portal,
VIR_FREE(list.targets);
}
- ret = 0;
- cleanup:
- virCommandFree(cmd);
- return ret;
+ return 0;
}
@@ -538,9 +522,8 @@ int
virISCSINodeNew(const char *portal,
const char *target)
{
- virCommandPtr cmd = NULL;
+ VIR_AUTOPTR(virCommand) cmd = NULL;
int status;
- int ret = -1;
cmd = virCommandNewArgList(ISCSIADM,
"--mode", "node",
@@ -553,20 +536,17 @@ virISCSINodeNew(const char *portal,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed new node mode for target '%s'"),
target);
- goto cleanup;
+ return -1;
}
if (status != 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("%s failed new mode for target '%s' with status '%d'"),
ISCSIADM, target, status);
- goto cleanup;
+ return -1;
}
- ret = 0;
- cleanup:
- virCommandFree(cmd);
- return ret;
+ return 0;
}
@@ -576,9 +556,8 @@ virISCSINodeUpdate(const char *portal,
const char *name,
const char *value)
{
- virCommandPtr cmd = NULL;
+ VIR_AUTOPTR(virCommand) cmd = NULL;
int status;
- int ret = -1;
cmd = virCommandNewArgList(ISCSIADM,
"--mode", "node",
@@ -594,11 +573,8 @@ virISCSINodeUpdate(const char *portal,
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to update '%s' of node mode for target '%s'"),
name, target);
- goto cleanup;
+ return -1;
}
- ret = 0;
- cleanup:
- virCommandFree(cmd);
- return ret;
+ return 0;
}
--
1.8.3.1
--
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