[v1] util:Fix with process number and pid file do not match

[libvirt] [PATCH] util:Fix with process number and pid file do not match

dubobo posted 1 patch 5 years, 9 months ago

Diff against v1 v1 v1 v1
Download mbox

Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/libvirt tags/patchew/1530669457-32992-2-git-send-email-dubo163@126.com

Test syntax-check passed

src/util/virpidfile.c | 8 ++++++++
1 file changed, 8 insertions(+)

Expand all Fold all

[libvirt] [PATCH] util:Fix with process number and pid file do not match

Posted by dubobo 5 years, 9 months ago

the libvirtd pid file is not match the os process pid number
which is smaller than before.

this would be exist if the libvirtd process coredump or the os
process was killed which the next pid number is smaller.

you can be also edit the pid file to write the longer number than
before,then restart the libvirtd service.

Signed-off-by: dubobo <dubo163@126.com>
---
 src/util/virpidfile.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/util/virpidfile.c b/src/util/virpidfile.c
index 58ab29f..1a85d43 100644
--- a/src/util/virpidfile.c
+++ b/src/util/virpidfile.c
@@ -446,6 +446,14 @@ int virPidFileAcquirePath(const char *path,
 
     snprintf(pidstr, sizeof(pidstr), "%lld", (long long) pid);
 
+    if (ftruncate(fd, 0) < 0) {
+        virReportSystemError(errno,
+                             _("Failed to truncate pid file '%s'"),
+                             path);
+        VIR_FORCE_CLOSE(fd);
+        return -1;
+    }
+
     if (safewrite(fd, pidstr, strlen(pidstr)) < 0) {
         virReportSystemError(errno,
                              _("Failed to write to pid file '%s'"),
-- 
1.8.3.1


--
libvir-list mailing list
libvir-list@redhat.com
https://www.redhat.com/mailman/listinfo/libvir-list