make xfunctions optionally longjump instead of exit.

use it for making NOFORK more practical.
touch: make it a NOFORK applet

2 files changed, 5 insertions, 10 deletions

diff --git a/coreutils/cmp.c b/coreutils/cmp.c
index cff118279..c70f8822d 100644
--- a/coreutils/cmp.c
+++ b/coreutils/cmp.c
@@ -30,7 +30,7 @@ static FILE *cmp_xfopen_input(const char * const filename)
 	fp = fopen_or_warn_stdin(filename);
 	if (fp)
 		return fp;
-	exit(xfunc_error_retval);	/* We already output an error message. */
+	sleep_and_die();	/* We already output an error message. */
 }
 
 static const char fmt_eof[] = "cmp: EOF on %s\n";
diff --git a/coreutils/touch.c b/coreutils/touch.c
index ae4e689f1..5f81b2380 100644
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -17,21 +17,16 @@
  * Also, exiting on a failure was a bug.  All args should be processed.
  */
 
-#include <stdio.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <utime.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
 #include "busybox.h"
 
+/* This is a NOFORK applet. Be very careful! */
+
 int touch_main(int argc, char **argv);
 int touch_main(int argc, char **argv)
 {
 	int fd;
 	int status = EXIT_SUCCESS;
-	bool flags = (getopt32(argc, argv, "c") & 1);
+	int flags = getopt32(argc, argv, "c");
 
 	argv += optind;
 
@@ -41,7 +36,7 @@ int touch_main(int argc, char **argv)
 
 	do {
 		if (utime(*argv, NULL)) {
-			if (errno == ENOENT) {	/* no such file*/
+			if (errno == ENOENT) {	/* no such file */
 				if (flags) {	/* Creation is disabled, so ignore. */
 					continue;
 				}