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From 75f8c320bb6a09f111db513c52c71bbb5b3b7b9f Mon Sep 17 00:00:00 2001
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Message-Id: <75f8c320bb6a09f111db513c52c71bbb5b3b7b9f@dist-git>
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From: Pavel Hrdina <phrdina@redhat.com>
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Date: Mon, 1 Jul 2019 17:05:56 +0200
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Subject: [PATCH] vircgroup: Extract mount options matching into function
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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(cherry picked from commit 6d5b91f0f5527ed79b39f1f1a375a35869e75356)
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1689297
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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Message-Id: <6c5aa678b08ceb1efd6d1bda2350a979ca59035b.1561993099.git.phrdina@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/util/vircgroup.c | 84 ++++++++++++++++++++++++++------------------
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1 file changed, 49 insertions(+), 35 deletions(-)
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diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
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index 9032bcbb63..ec9994780a 100644
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--- a/src/util/vircgroup.c
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+++ b/src/util/vircgroup.c
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@@ -399,6 +399,33 @@ virCgroupResolveMountLink(char *mntDir,
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}
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+static bool
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+virCgroupMountOptsMatchController(const char *mntOpts,
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+ const char *typeStr)
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+{
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+ const char *tmp = mntOpts;
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+ int typeLen = strlen(typeStr);
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+
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+ while (tmp) {
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+ const char *next = strchr(tmp, ',');
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+ int len;
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+ if (next) {
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+ len = next - tmp;
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+ next++;
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+ } else {
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+ len = strlen(tmp);
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+ }
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+
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+ if (typeLen == len && STREQLEN(typeStr, tmp, len))
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+ return true;
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+
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+ tmp = next;
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+ }
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+
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+ return false;
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+}
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+
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+
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/*
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* Process /proc/mounts figuring out what controllers are
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* mounted and where
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@@ -426,42 +453,29 @@ virCgroupDetectMountsFromFile(virCgroupPtr group,
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for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
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const char *typestr = virCgroupControllerTypeToString(i);
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- int typelen = strlen(typestr);
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- char *tmp = entry.mnt_opts;
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- virCgroupControllerPtr controller = &group->controllers[i];
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- while (tmp) {
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- char *next = strchr(tmp, ',');
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- int len;
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- if (next) {
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- len = next-tmp;
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- next++;
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- } else {
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- len = strlen(tmp);
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+
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+ if (virCgroupMountOptsMatchController(entry.mnt_opts, typestr)) {
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+ /* Note that the lines in /proc/mounts have the same
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+ * order than the mount operations, and that there may
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+ * be duplicates due to bind mounts. This means
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+ * that the same mount point may be processed more than
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+ * once. We need to save the results of the last one,
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+ * and we need to be careful to release the memory used
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+ * by previous processing. */
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+ virCgroupControllerPtr controller = &group->controllers[i];
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+
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+ VIR_FREE(controller->mountPoint);
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+ VIR_FREE(controller->linkPoint);
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+ if (VIR_STRDUP(controller->mountPoint, entry.mnt_dir) < 0)
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+ goto cleanup;
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+
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+ /* If it is a co-mount it has a filename like "cpu,cpuacct"
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+ * and we must identify the symlink path */
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+ if (checkLinks &&
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+ virCgroupResolveMountLink(entry.mnt_dir, typestr,
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+ controller) < 0) {
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+ goto cleanup;
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}
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-
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- if (typelen == len && STREQLEN(typestr, tmp, len)) {
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-
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- /* Note that the lines in /proc/mounts have the same
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- * order than the mount operations, and that there may
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- * be duplicates due to bind mounts. This means
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- * that the same mount point may be processed more than
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- * once. We need to save the results of the last one,
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- * and we need to be careful to release the memory used
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- * by previous processing. */
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- VIR_FREE(controller->mountPoint);
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- VIR_FREE(controller->linkPoint);
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- if (VIR_STRDUP(controller->mountPoint, entry.mnt_dir) < 0)
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- goto cleanup;
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-
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- /* If it is a co-mount it has a filename like "cpu,cpuacct"
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- * and we must identify the symlink path */
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- if (checkLinks &&
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- virCgroupResolveMountLink(entry.mnt_dir, typestr,
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- controller) < 0) {
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- goto cleanup;
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- }
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- }
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- tmp = next;
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}
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}
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}
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--
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2.22.0
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