From: Eivind Næss <eivnaes@yahoo.com>
Date: Mon, 20 Sep 2021 17:05:17 +0000 (-0700)
Subject: Fixing GCC warning with unused return value from ftruncate().
X-Git-Tag: ppp-2.5.0~56^2~15
X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=commitdiff_plain;h=c1c8357d05ed0039af411d3fd91d83e27be5edab;hp=05f088613bebc9fb743c309e9b9390d376387f1c

Fixing GCC warning with unused return value from ftruncate().

Signed-off-by: Eivind Næss <eivnaes@yahoo.com>
---

diff --git a/pppd/plugins/radius/buildreq.c b/pppd/plugins/radius/buildreq.c
index 3edd5ea..562790a 100644
--- a/pppd/plugins/radius/buildreq.c
+++ b/pppd/plugins/radius/buildreq.c
@@ -94,7 +94,7 @@ unsigned char rc_get_seqnbr(void)
 {
 	FILE *sf;
 	int tries = 1;
-	int seq_nbr, pos;
+	int seq_nbr, pos, ret;
 	char *seqfile = rc_conf_str("seqfile");
 
 	if ((sf = fopen(seqfile, "a+")) == NULL)
@@ -135,7 +135,10 @@ unsigned char rc_get_seqnbr(void)
 	}
 
 	rewind(sf);
-	ftruncate(fileno(sf),0);
+	ret = ftruncate(fileno(sf),0);
+	if (ret != 0) {
+		error("rc_get_seqnbr: couldn't truncate sequence file, %m");
+	}
 	fprintf(sf,"%d\n", (seq_nbr+1) & UCHAR_MAX);
 
 	fflush(sf); /* fflush because a process may read it between the do_unlock and fclose */