From 9c6b9ad6e19924196d66bba74bd87bc91ebf1fef Mon Sep 17 00:00:00 2001
From: PHO <pho@cielonegro.org>
Date: Sat, 27 Dec 2008 22:45:35 +0900
Subject: [PATCH] Removed unportable dependency on <err.h>.

---
 configure.ac |  3 ++-
 daemon.c     | 40 +++++++++++++++++++++++++---------------
 pidfile.c    |  1 -
 3 files changed, 27 insertions(+), 17 deletions(-)

diff --git a/configure.ac b/configure.ac
index a48bcd1..bb8b380 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_PREREQ([2.63])
+AC_PREREQ([2.6])
 AC_INIT([daemon], [1.8], [pho@cielonegro.org])
 
 AM_INIT_AUTOMAKE
@@ -26,6 +26,7 @@ AC_TYPE_SSIZE_T
 # Checks for library functions.
 AC_CHECK_FUNCS([ftruncate])
 AC_CHECK_FUNCS([strtol])
+AC_CHECK_FUNCS([strerror])
 AC_FUNC_MALLOC
 
 AC_CONFIG_FILES([
diff --git a/daemon.c b/daemon.c
index 82b19a1..5b769dd 100644
--- a/daemon.c
+++ b/daemon.c
@@ -33,10 +33,10 @@
 
 #include <sys/param.h>
 
-#include <err.h>
 #include <errno.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
 
@@ -88,15 +88,20 @@ main(int argc, char *argv[])
 		pfh = pidfile_open(pidfile, 0600, &otherpid);
 		if (pfh == NULL) {
 			if (errno == EEXIST) {
-				errx(3, "process already running, pid: %d",
-				    otherpid);
+                fprintf(stderr, "process already running, pid: %d\n", otherpid);
+                exit(3);
 			}
-			err(2, "pidfile ``%s''", pidfile);
+            else {
+                fprintf(stderr, "pidfile ``%s'': %s\n", pidfile, strerror(errno));
+                exit(2);
+            }
 		}
 	}
 
-	if (daemon(nochdir, noclose) == -1)
-		err(1, NULL);
+	if (daemon(nochdir, noclose) == -1) {
+        fprintf(stderr, "%s\n", strerror(errno));
+        exit(1);
+    }
 
 	/* Now that we are the child, write out the pid */
 	if (pidfile)
@@ -113,7 +118,8 @@ main(int argc, char *argv[])
 		pidfile_remove(pfh);
 
 	/* The child is now running, so the exit status doesn't matter. */
-	errc(1, errcode, "%s", argv[0]);
+    fprintf(stderr, "%s: %s\n", argv[0], strerror(errcode));
+    exit(1);
 }
 
 static void
@@ -122,18 +128,22 @@ restrict_process(const char *user)
 	struct passwd *pw = NULL;
 
 	pw = getpwnam(user);
-	if (pw == NULL)
-		errx(1, "unknown user: %s", user);
-
-    if (setuid(pw->pw_uid) != 0)
-        errx(1, "failed to setuid to %s", user);
+	if (pw == NULL) {
+        fprintf(stderr, "unknown user: %s\n", user);
+        exit(1);
+    }
+
+    if (setuid(pw->pw_uid) != 0) {
+        fprintf(stderr, "failed to setuid to %s\n", user);
+        exit(1);
+    }
 }
 
 static void
 usage(void)
 {
-	(void)fprintf(stderr,
-	    "usage: daemon [-cf] [-p pidfile] [-u user] command "
-		"arguments ...\n");
+	fprintf(stderr,
+            "usage: daemon [-cf] [-p pidfile] [-u user] command "
+            "arguments ...\n");
 	exit(1);
 }
diff --git a/pidfile.c b/pidfile.c
index 8fc42c9..b699efb 100644
--- a/pidfile.c
+++ b/pidfile.c
@@ -36,7 +36,6 @@
 #include <fcntl.h>
 #include <string.h>
 #include <time.h>
-#include <err.h>
 #include <errno.h>
 
 static int _pidfile_remove(struct pidfh *pfh, int freeit);
-- 
2.40.0