From a3a2bf4b67301263d37db3e0702845dbc671f439 Mon Sep 17 00:00:00 2001
From: Kevin Lo <kevlo@FreeBSD.org>
Date: Fri, 13 Jan 2012 06:51:15 +0000
Subject: [PATCH] fgets(3) returns a pointer, so compare against NULL, not
 integer 0.

---
 usr.bin/mail/edit.c            | 2 +-
 usr.bin/tftp/main.c            | 2 +-
 usr.bin/unzip/unzip.c          | 2 +-
 usr.sbin/config/mkmakefile.c   | 8 ++++----
 usr.sbin/lpr/lpc/lpc.c         | 2 +-
 usr.sbin/timed/timedc/timedc.c | 2 +-
 6 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/usr.bin/mail/edit.c b/usr.bin/mail/edit.c
index d1ff37fd794f..ad8aa535dec7 100644
--- a/usr.bin/mail/edit.c
+++ b/usr.bin/mail/edit.c
@@ -89,7 +89,7 @@ edit1(int *msgvec, int type)
 			char *p;
 
 			printf("Edit message %d [ynq]? ", msgvec[i]);
-			if (fgets(buf, sizeof(buf), stdin) == 0)
+			if (fgets(buf, sizeof(buf), stdin) == NULL)
 				break;
 			for (p = buf; *p == ' ' || *p == '\t'; p++)
 				;
diff --git a/usr.bin/tftp/main.c b/usr.bin/tftp/main.c
index 0092827f2542..669299bde06d 100644
--- a/usr.bin/tftp/main.c
+++ b/usr.bin/tftp/main.c
@@ -734,7 +734,7 @@ command(void)
                         history(hist, &he, H_ENTER, bp);
 		} else {
 			line[0] = 0;
-			if (fgets(line, sizeof line , stdin) == 0) {
+			if (fgets(line, sizeof line , stdin) == NULL) {
 				if (feof(stdin)) {
 					exit(txrx_error);
 				} else {
diff --git a/usr.bin/unzip/unzip.c b/usr.bin/unzip/unzip.c
index 1fa356462336..accd6531f11c 100644
--- a/usr.bin/unzip/unzip.c
+++ b/usr.bin/unzip/unzip.c
@@ -422,7 +422,7 @@ handle_existing_file(char **path)
 		fprintf(stderr,
 		    "replace %s? [y]es, [n]o, [A]ll, [N]one, [r]ename: ",
 		    *path);
-		if (fgets(buf, sizeof(buf), stdin) == 0) {
+		if (fgets(buf, sizeof(buf), stdin) == NULL) {
 			clearerr(stdin);
 			printf("NULL\n(EOF or read error, "
 			    "treating as \"[N]one\"...)\n");
diff --git a/usr.sbin/config/mkmakefile.c b/usr.sbin/config/mkmakefile.c
index 4cbc1356f83a..937fb0f96e97 100644
--- a/usr.sbin/config/mkmakefile.c
+++ b/usr.sbin/config/mkmakefile.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1993, 19801990
+ * Copyright (c) 1980, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -154,7 +154,7 @@ makefile(void)
 		fprintf(ofp, "PROFLEVEL=%d\n", profiling);
 	if (*srcdir != '\0')
 		fprintf(ofp,"S=%s\n", srcdir);
-	while (fgets(line, BUFSIZ, ifp) != 0) {
+	while (fgets(line, BUFSIZ, ifp) != NULL) {
 		if (*line != '%') {
 			fprintf(ofp, "%s", line);
 			continue;
@@ -204,7 +204,7 @@ makehints(void)
 		ifp = fopen(hint->hint_name, "r");
 		if (ifp == NULL)
 			err(1, "%s", hint->hint_name);
-		while (fgets(line, BUFSIZ, ifp) != 0) {
+		while (fgets(line, BUFSIZ, ifp) != NULL) {
 			/* zap trailing CR and/or LF */
 			while ((s = strrchr(line, '\n')) != NULL)
 				*s = '\0';
@@ -266,7 +266,7 @@ makeenv(void)
 	fprintf(ofp, "int envmode = %d;\n", envmode);
 	fprintf(ofp, "char static_env[] = {\n");
 	if (ifp) {
-		while (fgets(line, BUFSIZ, ifp) != 0) {
+		while (fgets(line, BUFSIZ, ifp) != NULL) {
 			/* zap trailing CR and/or LF */
 			while ((s = strrchr(line, '\n')) != NULL)
 				*s = '\0';
diff --git a/usr.sbin/lpr/lpc/lpc.c b/usr.sbin/lpr/lpc/lpc.c
index bd95c59591dd..f9fb920dd540 100644
--- a/usr.sbin/lpr/lpc/lpc.c
+++ b/usr.sbin/lpr/lpc/lpc.c
@@ -188,7 +188,7 @@ cmdscanner(void)
 			history(hist, &he, H_ENTER, bp);
 
 		} else {
-			if (fgets(cmdline, MAX_CMDLINE, stdin) == 0)
+			if (fgets(cmdline, MAX_CMDLINE, stdin) == NULL)
 				quit(0, NULL);
 			if (cmdline[0] == 0 || cmdline[0] == '\n')
 				break;
diff --git a/usr.sbin/timed/timedc/timedc.c b/usr.sbin/timed/timedc/timedc.c
index 5423ceaadef6..7047f57ec46a 100644
--- a/usr.sbin/timed/timedc/timedc.c
+++ b/usr.sbin/timed/timedc/timedc.c
@@ -105,7 +105,7 @@ main(argc, argv)
 			printf("timedc> ");
 			(void) fflush(stdout);
 		}
-		if (fgets(cmdline, sizeof(cmdline), stdin) == 0)
+		if (fgets(cmdline, sizeof(cmdline), stdin) == NULL)
 			quit();
 		if (cmdline[0] == 0)
 			break;