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Fix std* files not being redirected when daemonising

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This could occur when built with assertions removed.

Closes #2708. Thanks to ckoehne.
This commit is contained in:
Roger A. Light 2022-12-16 16:19:51 +00:00
parent ec173fffe8
commit 62b68364c7
2 changed files with 14 additions and 3 deletions
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2
ChangeLog.txt
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@ -3,6 +3,8 @@ Broker:
disappearing.
- Fix some retained topic memory not being cleared immediately after used.
- Fix error handling related to the `bind_interface` option.
- Fix std* files not being redirected when daemonising, when built with
assertions removed. Closes #2708.
2.0.15 - 2022-08-16
===================

15
src/mosquitto.c
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@ -160,9 +160,18 @@ static void mosquitto__daemonise(void)
exit(1);
}
assert(freopen("/dev/null", "r", stdin));
assert(freopen("/dev/null", "w", stdout));
assert(freopen("/dev/null", "w", stderr));
if(!freopen("/dev/null", "r", stdin)){
log__printf(NULL, MOSQ_LOG_ERR, "Error whilst daemonising (%s): %s", "stdin", strerror(errno));
exit(1);
}
if(!freopen("/dev/null", "w", stdout)){
log__printf(NULL, MOSQ_LOG_ERR, "Error whilst daemonising (%s): %s", "stdout", strerror(errno));
exit(1);
}
if(!freopen("/dev/null", "w", stderr)){
log__printf(NULL, MOSQ_LOG_ERR, "Error whilst daemonising (%s): %s", "stderr", strerror(errno));
exit(1);
}
#else
log__printf(NULL, MOSQ_LOG_WARNING, "Warning: Can't start in daemon mode in Windows.");
#endif