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lxcSetSchedulerParameters: reverse order of tests; diagnose a failure

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* src/lxc/lxc_driver.c (lxcSetSchedulerParameters): Ensure that
"->field" is "cpu_shares" before possibly giving a diagnostic about
a type for a "cpu_shares" value.
Also, virCgroupSetCpuShares could fail without evoking a diagnostic.
Add one.
This commit is contained in:
Jim Meyering 2010-05-11 15:51:46 +02:00 committed by Eric Blake
parent fff6be0cc0
commit dd1058fa8f
1 changed files with 14 additions and 9 deletions
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23
src/lxc/lxc_driver.c
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@ -2054,18 +2054,23 @@ static int lxcSetSchedulerParameters(virDomainPtr domain,
for (i = 0; i < nparams; i++) {
virSchedParameterPtr param = &params[i];
if (param->type != VIR_DOMAIN_SCHED_FIELD_ULLONG) {
lxcError(VIR_ERR_INVALID_ARG, "%s",
_("Invalid type for cpu_shares tunable, expected a 'ullong'"));
if (STRNEQ(param->field, "cpu_shares")) {
lxcError(VIR_ERR_INVALID_ARG,
_("Invalid parameter `%s'"), param->field);
goto cleanup;
}
if (STREQ(param->field, "cpu_shares")) {
if (virCgroupSetCpuShares(group, params[i].value.ul) != 0)
goto cleanup;
} else {
lxcError(VIR_ERR_INVALID_ARG,
_("Invalid parameter `%s'"), param->field);
if (param->type != VIR_DOMAIN_SCHED_FIELD_ULLONG) {
lxcError(VIR_ERR_INVALID_ARG, "%s",
_("Invalid type for cpu_shares tunable, expected a 'ullong'"));
goto cleanup;
}
int rc = virCgroupSetCpuShares(group, params[i].value.ul);
if (rc != 0) {
virReportSystemError(-rc, _("failed to set cpu_shares=%llu"),
params[i].value.ul);
goto cleanup;
}
}