From: Michael Tremer <michael.tremer@ipfire.org>
Date: Tue, 17 Aug 2021 15:16:54 +0000 (+0000)
Subject: rlimit: Automatically set to maximum
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=7c14f08117e47eefc385538bbd07188172e98c23;p=fireperf.git

rlimit: Automatically set to maximum

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/main.c b/src/main.c
index 4c836d6..3af95bc 100644
--- a/src/main.c
+++ b/src/main.c
@@ -110,16 +110,25 @@ static int parse_port(struct fireperf_config* conf, const char* optarg) {
 static int set_limits(struct fireperf_config* conf) {
 	struct rlimit limit;
 
-	// Increase limit of open files
-	limit.rlim_cur = limit.rlim_max = conf->parallel + conf->listening_sockets + 128;
+	// Fetch current limit
+	if (getrlimit(RLIMIT_NOFILE, &limit) < 0) {
+		ERROR(conf, "Could not read RLIMIT_NOFILE: %m\n");
+		return 1;
+	}
 
+	// Set current value to maximum
+	limit.rlim_cur = limit.rlim_max;
+
+	// Apply the new limit
 	int r = setrlimit(RLIMIT_NOFILE, &limit);
 	if (r) {
-		ERROR(conf, "Could not set open file limit to %lu: %s\n",
-			(unsigned long)limit.rlim_max, strerror(errno));
+		ERROR(conf, "Could not set open file limit to %lu: %m\n",
+			(unsigned long)limit.rlim_cur);
 		return 1;
 	}
 
+	DEBUG(conf, "RLIMIT_NOFILE set to %lu\n", (unsigned long)limit.rlim_cur);
+
 	return 0;
 }