[libvirt] [PATCH v2] lxc: Add virCgroupSetOwner()
Daniel P. Berrange
berrange at redhat.com
Mon Feb 24 12:20:58 UTC 2014
On Fri, Feb 14, 2014 at 02:25:55PM +0100, Richard Weinberger wrote:
> diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
> index a6d60c5..4bef0db 100644
> --- a/src/util/vircgroup.c
> +++ b/src/util/vircgroup.c
> @@ -3253,6 +3253,66 @@ cleanup:
> }
>
>
> +int virCgroupSetOwner(virCgroupPtr cgroup,
> + uid_t uid,
> + gid_t gid,
> + int controllers)
> +{
> + size_t i;
> +
> + for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
> + char *base, *entry;
> + DIR *dh;
> + struct dirent *de;
> +
> + if (!((1 << i) & controllers))
> + continue;
> +
> + if (!cgroup->controllers[i].mountPoint)
> + continue;
> +
> + if (virAsprintf(&base, "%s%s", cgroup->controllers[i].mountPoint,
> + cgroup->controllers[i].placement) < 0) {
> + return -1;
> + }
Indentation of 'return' is too deep
> +
> + dh = opendir(base);
> + if (!dh) {
> + VIR_ERROR(_("Unable to open %s: %s"), base, strerror(errno));
> + VIR_FREE(base);
> + return -1;
> + }
This should use virReportSystemError.
> +
> + while ((de = readdir(dh)) != NULL) {
> + if (STREQ(de->d_name, ".") ||
> + STREQ(de->d_name, ".."))
> + continue;
> +
> + if (virAsprintf(&entry, "%s/%s", base, de->d_name) < 0) {
> + VIR_FREE(base);
> + closedir(dh);
> + return -1;
> + }
> +
> + if (chown(entry, uid, gid) < 0)
> + VIR_WARN(_("cannot chown '%s' to (%u, %u): %s"), entry, uid, gid,
> + strerror(errno));
This should use virReportSystemError too, and propagate the error.
> +
> + VIR_FREE(entry);
> + }
> + closedir(dh);
> +
> + if (chown(base, uid, gid) < 0)
> + VIR_WARN(_("cannot chown '%s' to (%u, %u): %s"), entry, uid, gid,
> + strerror(errno));
Likewise. Also it uses NULL 'entry' var rather than 'base' in the
message args.
> +
> + VIR_FREE(base);
> + }
> +
> + return 0;
> +}
I'm going to send a followup with these fixes for review, which also
centralizes the error cleanup code.
Regards,
Daniel
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