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LXC: umount the temporary filesystem created by libvirt

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The devpts, dev and fuse filesystems are mounted temporarily.
there is no need to export them to container if container shares
the root directory with host.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
This commit is contained in:
Gao feng 2013-09-11 16:07:53 +08:00 committed by Daniel P. Berrange
parent fd72440a35
commit 4142bf46b8
1 changed files with 22 additions and 0 deletions
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22
src/lxc/lxc_container.c
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@ -1486,6 +1486,7 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
int ret = -1;
char *sec_mount_options;
char *stateDir = NULL;
char *tmp = NULL;
VIR_DEBUG("Setup pivot root");
@ -1522,6 +1523,26 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
goto cleanup;
#endif
/* These filesystems are created by libvirt temporarily, they
* shouldn't appear in container. */
if (STREQ(root->src, "/")) {
if (virAsprintf(&tmp, "%s/%s.dev", stateDir, vmDef->name) < 0 ||
lxcContainerUnmountSubtree(tmp, false) < 0)
goto cleanup;
VIR_FREE(tmp);
if (virAsprintf(&tmp, "%s/%s.devpts", stateDir, vmDef->name) < 0 ||
lxcContainerUnmountSubtree(tmp, false) < 0)
goto cleanup;
#if WITH_FUSE
VIR_FREE(tmp);
if (virAsprintf(&tmp, "%s/%s.fuse", stateDir, vmDef->name) < 0 ||
lxcContainerUnmountSubtree(tmp, false) < 0)
goto cleanup;
#endif
}
/* If we have the root source being '/', then we need to
* get rid of any existing stuff under /proc, /sys & /tmp.
* We need new namespace aware versions of those. We must
@ -1571,6 +1592,7 @@ cleanup:
VIR_FREE(stateDir);
virCgroupFree(&cgroup);
VIR_FREE(sec_mount_options);
VIR_FREE(tmp);
return ret;
}