From: Timo Sirainen <timo.sirainen@dovecot.fi>
Date: Wed, 29 Mar 2017 22:42:53 +0000 (+0300)
Subject: master: When logging fork() EAGAIN failure, include current ulimit -u value
X-Git-Tag: 2.3.0.rc1~1847
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=939f758ca239c53a60dae89e70ccdecd92072c5b;p=thirdparty%2Fdovecot%2Fcore.git

master: When logging fork() EAGAIN failure, include current ulimit -u value
---

diff --git a/src/master/service-process.c b/src/master/service-process.c
index 31c49cea14..fdbde99967 100644
--- a/src/master/service-process.c
+++ b/src/master/service-process.c
@@ -314,7 +314,17 @@ struct service_process *service_process_create(struct service *service)
 	}
 
 	if (pid < 0) {
-		service_error(service, "fork() failed: %m");
+		int fork_errno = errno;
+		rlim_t limit;
+		const char *limit_str = "";
+
+		if (fork_errno == EAGAIN &&
+		    restrict_get_process_limit(&limit) == 0) {
+			limit_str = t_strdup_printf(" (ulimit -u %llu reached?)",
+						    (unsigned long long)limit);
+		}
+		errno = fork_errno;
+		service_error(service, "fork() failed: %m%s", limit_str);
 		return NULL;
 	}
 	if (pid == 0) {