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Set the 'container_ttys' env variable for LXC consoles

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Systemd specified that any /dev/pts/NNN device on which it
is expected to spawn a agetty login, should be listed in
the 'container_ttys' env variable. It should just contain
the relative paths, eg 'pts/0' not '/dev/pts/0' and should
be space separated.

http://cgit.freedesktop.org/systemd/systemd/commit/?id=1d97ff7dd71902a5604c2fed8964925d54e09de9

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2013-12-13 16:50:28 +00:00
parent b0579ed900
commit daf08f36b5
1 changed files with 30 additions and 2 deletions
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32
src/lxc/lxc_container.c
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@ -196,10 +196,33 @@ int lxcContainerHasReboot(void)
*
* Returns a virCommandPtr
*/
static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef)
static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef,
char **ttyPaths,
size_t nttyPaths)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
virCommandPtr cmd;
virBuffer buf = VIR_BUFFER_INITIALIZER;
size_t i;
/* 'container_ptys' must exclude the PTY associated with
* the /dev/console device, hence start at 1 not 0
*/
for (i = 1; i < nttyPaths; i++) {
if (!STRPREFIX(ttyPaths[i], "/dev/")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Expected a /dev path for '%s'"),
ttyPaths[i]);
virBufferFreeAndReset(&buf);
return NULL;
}
virBufferAdd(&buf, ttyPaths[i] + 5, -1);
virBufferAddChar(&buf, ' ');
}
virBufferTrim(&buf, NULL, 1);
if (virBufferError(&buf))
return NULL;
virUUIDFormat(vmDef->uuid, uuidstr);
@ -212,11 +235,14 @@ static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef)
virCommandAddEnvString(cmd, "TERM=linux");
virCommandAddEnvString(cmd, "container=lxc-libvirt");
virCommandAddEnvPair(cmd, "container_uuid", uuidstr);
if (nttyPaths > 1)
virCommandAddEnvPair(cmd, "container_ttys", virBufferCurrentContent(&buf));
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_UUID", uuidstr);
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_NAME", vmDef->name);
if (vmDef->os.cmdline)
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_CMDLINE", vmDef->os.cmdline);
virBufferFreeAndReset(&buf);
return cmd;
}
@ -1789,7 +1815,9 @@ static int lxcContainerChild(void *data)
if ((hasReboot = lxcContainerHasReboot()) < 0)
goto cleanup;
cmd = lxcContainerBuildInitCmd(vmDef);
cmd = lxcContainerBuildInitCmd(vmDef,
argv->ttyPaths,
argv->nttyPaths);
virCommandWriteArgLog(cmd, 1);
if (lxcContainerSetID(vmDef) < 0)