osaf/libs/core/leap/os_defs.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
amfnd calls ncs_os_process_execute_timed and the child process takes too long
time before exec, (10 sec timeout). An alarm is set in the
ncs_os_process_execute_timed child process. If timed out a core dump will be
produced to be able to trouble shoot.
diff --git a/osaf/libs/core/leap/os_defs.c b/osaf/libs/core/leap/os_defs.c
--- a/osaf/libs/core/leap/os_defs.c
+++ b/osaf/libs/core/leap/os_defs.c
@@ -65,6 +65,15 @@ bool gl_ncs_atomic_mtx_initialise = fals
* description of SOCK_CLOEXEC. */
static pthread_mutex_t s_cloexec_mutex = PTHREAD_MUTEX_INITIALIZER;
+/*
+ * ALRM signal is used to detect if child process takes too long time before
exec.
+ *
+ * @param sig
+ */
+static void sigalrm_handler(int sig)
+{
+ abort();
+}
/***************************************************************************
*
* uns64
@@ -999,6 +1008,22 @@ uint32_t ncs_os_process_execute_timed(NC
osaf_mutex_lock_ordie(&s_cloexec_mutex);
if ((pid = fork()) == 0) {
+ unsigned int alarm_time_sec;
+ char* alarm_time;
+
+ if (signal(SIGALRM, sigalrm_handler) == SIG_ERR) {
+ LOG_ER("signal ALRM failed: %s", strerror(errno));
+ }
+ if ((alarm_time = getenv("OPENSAF_CHILD_EXEC_TIME_TOLERANCE"))
!= NULL) {
+ alarm_time_sec = strtol(alarm_time, NULL, 0);
+ }
+ else {
+ // default alarm timeout 2 seconds
+ alarm_time_sec = 2;
+ }
+
+ alarm(alarm_time_sec);
+
/*
** Make sure forked processes have default scheduling class
** independent of the callers scheduling class.
@@ -1054,6 +1079,8 @@ uint32_t ncs_os_process_execute_timed(NC
}
#endif
+ alarm(0);
+
/* child part */
if (execvp(req->i_script, req->i_argv) == -1) {
syslog(LOG_ERR, "%s: execvp '%s' failed - %s",
__FUNCTION__, req->i_script, strerror(errno));
------------------------------------------------------------------------------
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