ggsn: generate coredump and exit upon SIGABRT received

Previous code relied on abort() switching sigaction to SIG_FDL +
retriggering SIGABRT in case the signal handler returns, which would
then generate the coredump + terminate the process.
However, if a SIGABRT is received from somewhere else (kill -SIGABRT),
then the process would print the talloc report and continue running,
which is not desired.

Change-Id: I7acfdfe5020320d853cba98b5add7479f8aaaf39
Fixes: OS#4865
This commit is contained in:
Pau Espin 2020-11-25 18:49:16 +01:00
parent 1719abb409
commit 12304c0e5a
1 changed files with 11 additions and 0 deletions

View File

@ -71,6 +71,17 @@ static void signal_handler(int s)
end = 1;
break;
case SIGABRT:
/* in case of abort, we want to obtain a talloc report and
* then run default SIGABRT handler, who will generate coredump
* and abort the process. abort() should do this for us after we
* return, but program wouldn't exit if an external SIGABRT is
* received.
*/
talloc_report(tall_vty_ctx, stderr);
talloc_report_full(tall_ggsn_ctx, stderr);
signal(SIGABRT, SIG_DFL);
raise(SIGABRT);
break;
case SIGUSR1:
talloc_report(tall_vty_ctx, stderr);
talloc_report_full(tall_ggsn_ctx, stderr);