From 5154d19238be8d2c17ee83d8bd05dbc06c689603 Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Mon, 16 Jul 2007 07:19:32 +0000
Subject: [PATCH] env-update --fork-ldconfig really forks ldconfig and works
 now

---
 src/env-update.c | 39 ++++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/src/env-update.c b/src/env-update.c
index 49a07718..07a9b0b2 100644
--- a/src/env-update.c
+++ b/src/env-update.c
@@ -10,7 +10,10 @@
 
 #define APPLET "env-update"
 
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <getopt.h>
 #include <limits.h>
 #include <stdbool.h>
@@ -36,6 +39,14 @@
 #define LDNOTICE    "# ld.so.conf autogenerated by env-update; make all\n" \
                     "# changes to contents of /etc/env.d directory\n"
 
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#define LD_MESSAGE	"Regenerating /var/run/ld-elf.so.hints"
+#define LD_SYSTEM	"/sbin/ldconfig -elf -i '" LDSOCONF "'";
+#else
+#define LD_MESSAGE	"Regenerating /etc/ld.so.cache"
+#define LD_SYSTEM	"/sbin/ldconfig"
+#endif
+
 static const char *colon_separated[] = {
 	"ADA_INCLUDE_PATH",
 	"ADA_OBJECTS_PATH",
@@ -62,7 +73,7 @@ static const char *space_separated[] = {
 static char *applet = NULL;
 
 #include "_usage.h"
-#define getoptstring "L" getoptstring_COMMON
+#define getoptstring "lL" getoptstring_COMMON
 static struct option longopts[] = {
 	{ "fork-ldconfig",  0, NULL, 'l'},
 	{ "no-ldconfig",    0, NULL, 'L'},
@@ -288,7 +299,7 @@ int main (int argc, char **argv)
 
 		if (ld) {
 			int retval = 0;
-			pid_t pid = getpid ();
+			pid_t pid = 0;
 
 			if ((fp = fopen (LDSOCONF, "w")) == NULL)
 				eerrorx ("%s: fopen `%s': %s", applet, LDSOCONF,
@@ -298,22 +309,24 @@ int main (int argc, char **argv)
 				fprintf (fp, "%s\n", ldent);
 			fclose (fp);
 
+			ebegin (LD_MESSAGE);
 			if (fork_ldconfig) {
 				if ((pid = fork ()) == -1)
 					eerror ("%s: failed to fork: %s", applet,
 							strerror (errno));
+				else if (pid == 0) {
+					/* Become a proper daemon for a little bit */
+					int fd = open ("/dev/null", O_RDWR);
+					setsid ();
+					dup2 (fd, fileno (stdin));
+					dup2 (fd, fileno (stdout));
+					dup2 (fd, fileno (stderr));
+				}
 			}
-
-			if (pid) {
-#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
-				ebegin ("Regenerating /var/run/ld-elf.so.hints");
-				retval = system ("/sbin/ldconfig -elf -i '" LDSOCONF "'");
-#else
-				ebegin ("Regenerating /etc/ld.so.cache");
-				retval = system ("/sbin/ldconfig");
-#endif
-				eend (retval, NULL);
-			}
+		
+			if (pid == 0)
+				retval = system (LD_SYSTEM);
+			eend (retval, NULL);
 		}
 	}