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virsh-snapshot: Update snapshot commands to use vshCommandOptStringReq 

also avoids potential NULL pointer dereference:

$ virsh snapshot-current asdf ""
error: invalid snapshotname argument '(null)'

by removing the error message in favor of vshCommandOptStringReq
This commit is contained in:
Peter Krempa 2013-01-21 18:11:41 +01:00
parent 351f7a2f2c
commit b2e8585555
1 changed files with 7 additions and 14 deletions
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21
tools/virsh-snapshot.c
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@ -207,7 +207,7 @@ cmdSnapshotCreate(vshControl *ctl, const vshCmd *cmd)
if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
goto cleanup;
if (vshCommandOptString(cmd, "xmlfile", &from) <= 0) {
if (vshCommandOptStringReq(ctl, cmd, "xmlfile", &from) < 0) {
buffer = vshStrdup(ctl, "<domainsnapshot/>");
} else {
if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0) {
@ -431,11 +431,9 @@ cmdSnapshotCreateAs(vshControl *ctl, const vshCmd *cmd)
if (dom == NULL)
goto cleanup;
if (vshCommandOptString(cmd, "name", &name) < 0 ||
vshCommandOptString(cmd, "description", &desc) < 0) {
vshError(ctl, _("argument must not be empty"));
if (vshCommandOptStringReq(ctl, cmd, "name", &name) < 0 ||
vshCommandOptStringReq(ctl, cmd, "description", &desc) < 0)
goto cleanup;
}
virBufferAddLit(&buf, "<domainsnapshot>\n");
if (name)
@ -443,10 +441,8 @@ cmdSnapshotCreateAs(vshControl *ctl, const vshCmd *cmd)
if (desc)
virBufferEscapeString(&buf, " <description>%s</description>\n", desc);
if (vshCommandOptString(cmd, "memspec", &memspec) < 0) {
vshError(ctl, _("memspec argument must not be empty"));
if (vshCommandOptStringReq(ctl, cmd, "memspec", &memspec) < 0)
goto cleanup;
}
if (memspec && vshParseSnapshotMemspec(ctl, &buf, memspec) < 0)
goto cleanup;
@ -496,10 +492,8 @@ vshLookupSnapshot(vshControl *ctl, const vshCmd *cmd,
bool current = vshCommandOptBool(cmd, "current");
const char *snapname = NULL;
if (vshCommandOptString(cmd, arg, &snapname) < 0) {
vshError(ctl, _("invalid argument for --%s"), arg);
if (vshCommandOptStringReq(ctl, cmd, arg, &snapname) < 0)
return -1;
}
if (exclusive && current && snapname) {
vshError(ctl, _("--%s and --current are mutually exclusive"), arg);
@ -703,10 +697,9 @@ cmdSnapshotCurrent(vshControl *ctl, const vshCmd *cmd)
if (dom == NULL)
goto cleanup;
if (vshCommandOptString(cmd, "snapshotname", &snapshotname) < 0) {
vshError(ctl, _("invalid snapshotname argument '%s'"), snapshotname);
if (vshCommandOptStringReq(ctl, cmd, "snapshotname", &snapshotname) < 0)
goto cleanup;
}
if (snapshotname) {
virDomainSnapshotPtr snapshot2 = NULL;
flags = (VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE |