static void test_msm_removePid(void)
{
pid_t pid;
CU_ASSERT_EQUAL(msm_removePid(5), LDM7_NOENT);
log_clear();
CU_ASSERT_EQUAL(msm_removePid(1), 0);
CU_ASSERT_EQUAL(msm_getPid(IDS, &pid), LDM7_NOENT);
log_clear();
}
/**
* Indicates if a particular multicast LDM sender is running.
*
* @pre {Multicast LDM sender PID map is locked for writing}.
* @param[in] feedtype Feed-type of multicast group.
* @retval 0 The multicast LDM sender associated with the given
* multicast group is running.
* @retval LDM7_NOENT No such process.
* @retval LDM7_SYSTEM System error. `log_start()` called.
*/
static Ldm7Status
mlsm_isRunning(
const feedtypet feedtype)
{
pid_t pid;
int status = msm_getPid(feedtype, &pid);
if (status == 0) {
if (kill(pid, 0) == 0) {
/* Can signal the process */
status = 0;
}
else {
/* Can't signal the process */
uwarn("According to my information, the PID of the multicast LDM "
"sender associated with feed-type %s is %d -- but that "
"process can't be signaled by this process. I'll assume "
"the relevant multicast LDM sender is not running.",
s_feedtypet(feedtype), pid);
(void)msm_removePid(pid); // don't care if it exists or not
status = LDM7_NOENT;
}
}
return status;
}
static pid_t reap(
pid_t pid,
int options)
{
pid_t wpid = 0;
int status = 0;
#ifdef HAVE_WAITPID
wpid = waitpid(pid, &status, options);
#else
if(options == 0) {
wpid = wait(&status);
}
/* customize here for older systems, use wait3 or whatever */
#endif
if (wpid == -1) {
if (!(errno == ECHILD && pid == -1)) /* Only complain when relevant */
serror("waitpid");
return -1;
}
/* else */
if (wpid != 0) {
char command[512];
#if !defined(WIFSIGNALED) && !defined(WIFEXITED)
#error "Can't decode wait status"
#endif
#if defined(WIFSTOPPED)
if (WIFSTOPPED(status)) {
int n = lcf_getCommandLine(wpid, command, sizeof(command));
if (n == -1) {
log_add("Couldn't get command-line of EXEC process "
"%ld", wpid);
log_log(LOG_ERR);
}
unotice(
n <= 0 ?
"child %d stopped by signal %d" :
"child %d stopped by signal %d: %*s", wpid,
WSTOPSIG(status), n, command);
}
else
#endif /*WIFSTOPPED*/
#if defined(WIFSIGNALED)
if (WIFSIGNALED(status)) {
int n = lcf_getCommandLine(wpid, command, sizeof(command));
if (n == -1) {
log_add("Couldn't get command-line of EXEC process "
"%ld", wpid);
log_log(LOG_ERR);
}
cps_remove(wpid); /* upstream LDM processes */
lcf_freeExec(wpid); /* EXEC processes */
#if WANT_MULTICAST
(void)msm_removePid(wpid); // multicast LDM senders
#endif
unotice(
n <= 0 ?
"child %d terminated by signal %d" :
"child %d terminated by signal %d: %*s", wpid,
WTERMSIG(status), n, command);
/* DEBUG */
switch (WTERMSIG(status)) {
/*
* If a child dumped core,
* shut everything down.
*/
case SIGQUIT:
case SIGILL:
case SIGTRAP: /* ??? */
case SIGABRT:
#if defined(SIGEMT)
case SIGEMT: /* ??? */
#endif
case SIGFPE: /* ??? */
case SIGBUS:
case SIGSEGV:
#if defined(SIGSYS)
case SIGSYS: /* ??? */
#endif
#ifdef SIGXCPU
case SIGXCPU:
#endif
#ifdef SIGXFSZ
case SIGXFSZ:
#endif
unotice("Killing (SIGTERM) process group");
(void) kill(0, SIGTERM);
break;
}
}
else
#endif /*WIFSIGNALED*/
#if defined(WIFEXITED)
if (WIFEXITED(status)) {
int exitStatus = WEXITSTATUS(status);
int n = lcf_getCommandLine(wpid, command, sizeof(command));
cps_remove(wpid); /* upstream LDM processes */
lcf_freeExec(wpid); /* EXEC processes */
if (n == -1) {
log_add("Couldn't get command-line of EXEC process "
"%ld", wpid);
log_log(LOG_ERR);
}
log_start(
n <= 0 ?
"child %d exited with status %d" :
"child %d exited with status %d: %*s", wpid,
exitStatus, n, command);
log_log(exitStatus ? LOG_NOTICE : LOG_INFO);
}
#endif /*WIFEXITED*/
}
return wpid;
}
