External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-02-22 11:22:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

mount fuse's meminfo file to container's /proc/meminfo

Browse Source 
we already have virtualize meminfo for container through fuse filesystem,
add function lxcContainerMountProcFuse to mount this meminfo file to
the container's /proc/meminfo.

So we can isolate container's /proc/meminfo from host now.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
This commit is contained in:
Gao feng 2012-11-12 15:02:28 +08:00 committed by Daniel P. Berrange
parent d671c0ed1b
commit df33ecdd9e
1 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
src/lxc/lxc_container.c
View File

@ -595,6 +595,36 @@ cleanup:
return rc;
}
#if HAVE_FUSE
static int lxcContainerMountProcFuse(virDomainDefPtr def,
const char *srcprefix)
{
int ret;
char *meminfo_path = NULL;
if ((ret = virAsprintf(&meminfo_path,
"%s/%s/%s/meminfo",
srcprefix, LXC_STATE_DIR,
def->name)) < 0)
return ret;
if ((ret = mount(meminfo_path, "/proc/meminfo",
NULL, MS_BIND, NULL)) < 0) {
virReportSystemError(errno,
_("Failed to mount %s on /proc/meminfo"),
meminfo_path);
}
VIR_FREE(meminfo_path);
return ret;
}
#else
static int lxcContainerMountProcFuse(virDomainDefPtr def ATTRIBUTE_UNUSED,
const char *srcprefix ATTRIBUTE_UNUSED)
{
return 0;
}
#endif
static int lxcContainerMountFSDevPTS(virDomainFSDefPtr root)
{
@ -1554,6 +1584,10 @@ static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef,
if (lxcContainerMountBasicFS(true, sec_mount_options) < 0)
goto cleanup;
/* Mounts /proc/meminfo etc sysinfo */
if (lxcContainerMountProcFuse(vmDef, "/.oldroot") < 0)
goto cleanup;
/* Now we can re-mount the cgroups controllers in the
* same configuration as before */
if (lxcContainerMountCGroups(mounts, nmounts,
@ -1650,6 +1684,10 @@ static int lxcContainerSetupExtraMounts(virDomainDefPtr vmDef,
if (lxcContainerMountBasicFS(false, sec_mount_options) < 0)
goto cleanup;
/* Mounts /proc/meminfo etc sysinfo */
if (lxcContainerMountProcFuse(vmDef, "/.oldroot") < 0)
goto cleanup;
/* Now we can re-mount the cgroups controllers in the
* same configuration as before */
if (lxcContainerMountCGroups(mounts, nmounts,