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lxc: container: Build init cmd before we close stdout

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That way we can log the 'init' argv for debugging.
This commit is contained in:
Cole Robinson 2011-05-06 10:50:00 -04:00
parent 0719c3d64c
commit 0ed4aa448e
1 changed files with 25 additions and 16 deletions
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41
src/lxc/lxc_container.c
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@ -94,15 +94,14 @@ struct __lxc_child_argv {
/**
* lxcContainerExecInit:
* lxcContainerBuildInitCmd:
* @vmDef: pointer to vm definition structure
*
* Exec the container init string. The container init will replace then
* be running in the current process
* Build a virCommandPtr for launching the container 'init' process
*
* Does not return
* Returns a virCommandPtr
*/
static int lxcContainerExecInit(virDomainDefPtr vmDef)
static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
virCommandPtr cmd;
@ -116,7 +115,7 @@ static int lxcContainerExecInit(virDomainDefPtr vmDef)
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_UUID", uuidstr);
virCommandAddEnvPair(cmd, "LIBVIRT_LXC_NAME", vmDef->name);
return virCommandExec(cmd);
return cmd;
}
/**
@ -753,28 +752,34 @@ static int lxcContainerChild( void *data )
lxc_child_argv_t *argv = data;
virDomainDefPtr vmDef = argv->config;
int ttyfd;
int ret = -1;
char *ttyPath;
virDomainFSDefPtr root;
virCommandPtr cmd = NULL;
if (NULL == vmDef) {
lxcError(VIR_ERR_INTERNAL_ERROR,
"%s", _("lxcChild() passed invalid vm definition"));
return -1;
goto cleanup;
}
cmd = lxcContainerBuildInitCmd(vmDef);
virCommandWriteArgLog(cmd, 1);
root = virDomainGetRootFilesystem(vmDef);
if (root) {
if (virAsprintf(&ttyPath, "%s%s", root->src, argv->ttyPath) < 0) {
virReportOOMError();
return -1;
goto cleanup;
}
} else {
if (!(ttyPath = strdup(argv->ttyPath))) {
virReportOOMError();
return -1;
goto cleanup;
}
}
VIR_DEBUG("Container TTY path: %s", ttyPath);
ttyfd = open(ttyPath, O_RDWR|O_NOCTTY);
if (ttyfd < 0) {
@ -782,34 +787,38 @@ static int lxcContainerChild( void *data )
_("Failed to open tty %s"),
ttyPath);
VIR_FREE(ttyPath);
return -1;
goto cleanup;
}
VIR_FREE(ttyPath);
if (lxcContainerSetStdio(argv->monitor, ttyfd) < 0) {
VIR_FORCE_CLOSE(ttyfd);
return -1;
goto cleanup;
}
VIR_FORCE_CLOSE(ttyfd);
if (lxcContainerSetupMounts(vmDef, root) < 0)
return -1;
goto cleanup;
/* Wait for interface devices to show up */
if (lxcContainerWaitForContinue(argv->monitor) < 0)
return -1;
goto cleanup;
/* rename and enable interfaces */
if (lxcContainerRenameAndEnableInterfaces(argv->nveths,
argv->veths) < 0)
return -1;
goto cleanup;
/* drop a set of root capabilities */
if (lxcContainerDropCapabilities() < 0)
return -1;
goto cleanup;
/* this function will only return if an error occured */
return lxcContainerExecInit(vmDef);
ret = virCommandExec(cmd);
cleanup:
virCommandFree(cmd);
return ret;
}
static int userns_supported(void)