support SIGINFO

external/gpl2/xcvs/dist/src/main.c

@@ -17,7 +17,7 @@
  *
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: main.c,v 1.6 2016/05/17 14:00:09 christos Exp $");
+__RCSID("$NetBSD: main.c,v 1.7 2018/08/21 15:37:33 christos Exp $");
 
 #include "cvs.h"
 
@@ -498,6 +498,32 @@ divide_by (unsigned char buf[COMMITID_RAW_SIZE], unsigned int d)
     return carry;
 }
 
+#ifdef SIGINFO
+#include <paths.h>
+
+static void
+show_status (int n)
+{
+	char wd[PATH_MAX];
+	char buf[2048];
+	static int ttyfd = -2;
+
+	if (ttyfd == -2)
+		ttyfd = open(_PATH_TTY, O_RDWR, O_CLOEXEC);
+
+	if (ttyfd == -1)
+		return;
+
+	if (getcwd(wd, sizeof(wd)) == NULL)
+		return;
+	n = snprintf(buf, sizeof(buf), "%s[%d]: working in %s\n", getprogname(),
+	    (int)getpid(), wd);
+	if (n <= 0)
+		return;
+	write(ttyfd, buf, (size_t)n);
+}
+#endif
+
 static void
 convert (char const input[COMMITID_RAW_SIZE], char *output)
 {
@@ -967,6 +993,9 @@ cause intermittent sandbox corruption.");
 
 	/* make sure we clean up on error */
 	signals_register (main_cleanup);
+#ifdef SIGINFO
+	signal (SIGINFO, show_status);
+#endif
 
 #ifdef KLUDGE_FOR_WNT_TESTSUITE
 	/* Probably the need for this will go away at some point once

external/gpl2/xcvs/dist/src/run.c

@@ -12,7 +12,7 @@
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: run.c,v 1.3 2016/05/17 14:00:09 christos Exp $");
+__RCSID("$NetBSD: run.c,v 1.4 2018/08/21 15:37:33 christos Exp $");
 
 #include "cvs.h"
 
@@ -239,6 +239,9 @@ run_exec (const char *stin, const char *stout, const char *sterr, int flags)
 #endif
     if (pid == 0)
     {
+#ifdef SIGINFO
+       signal (SIGINFO, SIG_DFL);
+#endif
 #ifdef SETXID_SUPPORT
 	if (flags & RUN_UNSETXID) {
 	    (void) setgid (getgid ());
@@ -570,6 +573,9 @@ piped_child (char *const *command, int *tofdp, int *fromfdp, bool fix_stderr)
 	error (1, errno, "cannot fork");
     if (pid == 0)
     {
+#ifdef SIGINFO
+	signal (SIGINFO, SIG_DFL);
+#endif
 	if (dup2 (to_child_pipe[0], STDIN_FILENO) < 0)
 	    error (1, errno, "cannot dup2 pipe");
 	if (close (to_child_pipe[1]) < 0)