From: Alexandre Ferrieux <alexandre.ferrieux@orange.com>
Date: Sat, 16 Jul 2022 19:34:39 +0000 (+0200)
Subject: Set SA_RESTART on non-lethal signals (REQ_INFO, FLUSH_PCAP) to avoid corrupting binar... 
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/8a28e07f3bfd2a031491db55173370e10dc074e3

Set SA_RESTART on non-lethal signals (REQ_INFO, FLUSH_PCAP) to avoid corrupting binary pcap output
---

diff --git a/tcpdump.c b/tcpdump.c
index e028d2e7..515edf5d 100644
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -2743,7 +2743,14 @@ static void
 
 	memset(&new, 0, sizeof(new));
 	new.sa_handler = func;
-	if (sig == SIGCHLD)
+	if ((sig == SIGCHLD)
+# ifdef SIGNAL_REQ_INFO
+		|| (sig == SIGNAL_REQ_INFO)
+# endif
+# ifdef SIGNAL_FLUSH_PCAP
+		|| (sig == SIGNAL_FLUSH_PCAP)
+# endif
+		)
 		new.sa_flags = SA_RESTART;
 	if (sigaction(sig, &new, &old) < 0)
 		return (SIG_ERR);