[libvirt] [PATCH] qemu: Shorten domain name for watchdog coredump

[Martin Kletzander]

Similarly to commit d294f6b0dff7, if the name is long enough, the
filename can be longer than filesystem's limit.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1334237

Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
---
 src/qemu/qemu_driver.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index efb3f854fb10..80d1d209a80c 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -3906,6 +3906,10 @@ static void processWatchdogEvent(virQEMUDriverPtr driver, virDomainObjPtr vm, in
 {
     int ret;
     virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+    char *domname = virDomainObjGetShortName(vm);
+
+    if (!domname)
+        goto cleanup;

     switch (action) {
     case VIR_DOMAIN_WATCHDOG_ACTION_DUMP:
@@ -3915,7 +3919,7 @@ static void processWatchdogEvent(virQEMUDriverPtr driver, virDomainObjPtr vm, in

             if (virAsprintf(&dumpfile, "%s/%s-%u",
                             cfg->autoDumpPath,
-                            vm->def->name,
+                            domname,
                             (unsigned int)time(NULL)) < 0)
                 goto cleanup;

@@ -3959,6 +3963,7 @@ static void processWatchdogEvent(virQEMUDriverPtr driver, virDomainObjPtr vm, in
     qemuDomainObjEndAsyncJob(driver, vm);

  cleanup:
+    VIR_FREE(domname);
     virObjectUnref(cfg);
 }

-- 
2.8.4