From db797f24f19196d29809ad457d252379b3705fb3 Mon Sep 17 00:00:00 2001
From: Marek Polacek <mmpolacek@gmail.com>
Date: Wed, 1 Dec 2010 17:18:11 +0100
Subject: [PATCH] last: Use EXIT_* and err()

Signed-off-by: Marek Polacek <mmpolacek@gmail.com>
---
 login-utils/last.c | 42 +++++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 19 deletions(-)

diff --git a/login-utils/last.c b/login-utils/last.c
index 293a0fd6..de733cd5 100644
--- a/login-utils/last.c
+++ b/login-utils/last.c
@@ -29,6 +29,7 @@
 /*
  * last
  */
+#include <err.h>
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/file.h>
@@ -147,7 +148,7 @@ main(int argc, char **argv) {
 		case '?':
 		default:
 			fputs(_("usage: last [-#] [-f file] [-t tty] [-h hostname] [user ...]\n"), stderr);
-			exit(1);
+			exit(EXIT_FAILURE);
 		}
 	for (argv += optind; *argv; ++argv) {
 #define	COMPATIBILITY
@@ -158,7 +159,8 @@ main(int argc, char **argv) {
 		addarg(USER_TYPE, *argv);
 	}
 	wtmp();
-	exit(0);
+
+	return EXIT_SUCCESS;
 }
 
 static char *utmp_ctime(struct utmp *u)
@@ -235,13 +237,15 @@ wtmp(void) {
 	(void)signal(SIGQUIT, onintr);
 
 	if ((fd = open(file,O_RDONLY)) < 0)
-		exit(1);
+		err(EXIT_FAILURE, _("%s: open failed"), file);
+
 	fstat(fd, &st);
 	utl_len = st.st_size;
 	utl = mmap(NULL, utl_len, PROT_READ|PROT_WRITE,
 		   MAP_PRIVATE|MAP_FILE, fd, 0);
 	if (utl == NULL)
-		exit(1);
+		err(EXIT_FAILURE, _("%s: mmap failed"), file);
+
 	listnr = utl_len/sizeof(struct utmp);
 
 	if(listnr) 
@@ -345,28 +349,28 @@ want(struct utmp *bp, int check) {
 			bp->ut_line[4] = '\0';
 	}
 	if (!arglist)
-		return(YES);
+		return YES;
 
 	for (step = arglist; step; step = step->next)
 		switch(step->type) {
 		case HOST_TYPE:
 			if (!strncmp(step->name, bp->ut_host, HMAX))
-				return(YES);
+				return YES;
 			break;
 		case TTY_TYPE:
 			if (!strncmp(step->name, bp->ut_line, LMAX))
-				return(YES);
+				return YES;
 			break;
 		case USER_TYPE:
 			if (!strncmp(step->name, bp->ut_name, NMAX))
-				return(YES);
+				return YES;
 			break;
 		case INET_TYPE:
 			if (bp->ut_addr == inet_addr(step->name))
-			  return(YES);
+			  return YES;
 			break;
 	}
-	return(NO);
+	return NO;
 }
 
 /*
@@ -416,10 +420,9 @@ hostconv(char *arg) {
 		return;
 	if (first) {
 		first = 0;
-		if (gethostname(name, sizeof(name))) {
-			perror(_("last: gethostname"));
-			exit(1);
-		}
+		if (gethostname(name, sizeof(name)))
+			err(EXIT_FAILURE, _("gethostname failed"));
+
 		hostdot = strchr(name, '.');
 	}
 	if (hostdot && !strcmp(hostdot, argdot))
@@ -447,11 +450,12 @@ ttyconv(char *arg) {
 			(void)strcpy(mval, "tty");
 			(void)strcpy(mval + 3, arg);
 		}
-		return(mval);
+		return mval;
 	}
 	if (!strncmp(arg, "/dev/", sizeof("/dev/") - 1))
-		return(arg + 5);
-	return(arg);
+		return arg + 5;
+
+	return arg;
 }
 
 /*
@@ -465,6 +469,6 @@ onintr(int signo) {
 	ct = utmp_ctime(&utmpbuf);
 	printf(_("\ninterrupted %10.10s %5.5s \n"), ct, ct + 11);
 	if (signo == SIGINT)
-		_exit(1);
-	(void)fflush(stdout);			/* fix required for rsh */
+		_exit(EXIT_FAILURE);
+	fflush(stdout);			/* fix required for rsh */
 }
-- 
2.39.5