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Add script hook support to the LXC driver

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Right now this implements only 2 basic hooks:
- before the lxc control process is being launched
- after the lxc control process is terminated
the XML description of the domain is passed to the hook script stdin
/etc/libvirt/hook/lxc

* src/lxc/lxc_driver.c: implement synchronous script hooks for LXC
  at domain startup and end
This commit is contained in:
Daniel Veillard 2010-03-26 16:02:05 +01:00
parent 668150fc3d
commit 86415b2d26
1 changed files with 27 additions and 0 deletions
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27
src/lxc/lxc_driver.c
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@ -49,6 +49,7 @@
#include "nodeinfo.h" #include "nodeinfo.h"
#include "uuid.h" #include "uuid.h"
#include "stats_linux.h" #include "stats_linux.h"
#include "hooks.h"
#define VIR_FROM_THIS VIR_FROM_LXC #define VIR_FROM_THIS VIR_FROM_LXC
@ -722,6 +723,16 @@ static int lxcVmCleanup(lxc_driver_t *driver,
DEBUG("container exited with rc: %d", rc); DEBUG("container exited with rc: %d", rc);
} }
/* now that we know it's stopped call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
/* we can't stop the operation even if the script raised an error */
virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_STOPPED, VIR_HOOK_SUBOP_END, NULL, xml);
VIR_FREE(xml);
}
virEventRemoveHandle(priv->monitorWatch); virEventRemoveHandle(priv->monitorWatch);
close(priv->monitor); close(priv->monitor);
@ -1130,6 +1141,22 @@ static int lxcControllerStart(lxc_driver_t *driver,
FD_SET(appPty, &keepfd); FD_SET(appPty, &keepfd);
/* now that we know it is about to start call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_START, VIR_HOOK_SUBOP_BEGIN, NULL, xml);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto cleanup;
}
if (virExec(largv, lenv, &keepfd, &child, if (virExec(largv, lenv, &keepfd, &child,
-1, &logfd, &logfd, -1, &logfd, &logfd,
VIR_EXEC_NONE) < 0) VIR_EXEC_NONE) < 0)