From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 3 Jul 1999 00:00:19 +0000 (+0000)
Subject: Include signal.h.
X-Git-Url: https://git.brokenzipper.com/gitweb?a=commitdiff_plain;h=a8c32ecff2f8f8adb2186852e02e29f74f7850f7;p=chaz%2Ftar

Include signal.h.
(SIGCHLD): Define to SIGCLD if SIGCLD is defined but SIGCHLD is not.
(main): Ensure SIGCHLD is not ignored, so that we can fork and wait.
---

diff --git a/src/tar.c b/src/tar.c
index 9b73de3..4d3ec0e 100644
--- a/src/tar.c
+++ b/src/tar.c
@@ -20,6 +20,11 @@
 
 #include <getopt.h>
 
+#include <signal.h>
+#if ! defined SIGCHLD && defined SIGCLD
+# define SIGCHLD SIGCLD
+#endif
+
 /* The following causes "common.h" to produce definitions of all the global
    variables, rather than just "extern" declarations of them.  GNU tar does
    depend on the system loader to preset all GLOBAL variables to neutral (or
@@ -1116,6 +1121,11 @@ main (int argc, char *const *argv)
     xmalloc (sizeof (const char *) * allocated_archive_names);
   archive_names = 0;
 
+#ifdef SIGCHLD
+  /* System V fork+wait does not work if SIGCHLD is ignored.  */
+  signal (SIGCHLD, SIG_DFL);
+#endif
+
   init_names ();
 
   /* Decode options.  */