From e3efc9230c2f192e2738cee733c6d4fa20a2be2a Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Mon, 12 Apr 2004 17:59:24 +0000
Subject: [PATCH] Jamie Guinan writes:

It looks like latest uClibc defines ARCH_HAS_MMU, but a few busybox files
test UCLIBC_HAS_MMU, resulting in vfork() getting called instead of
fork(), etc.

Patch below.   Only tested for lash.

Cheers,
-Jamie
---
 init/init.c  | 6 +++---
 shell/hush.c | 4 ++--
 shell/lash.c | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/init/init.c b/init/init.c
index 159b53912..ae2fd4c3a 100644
--- a/init/init.c
+++ b/init/init.c
@@ -53,7 +53,7 @@
 #endif
 
 
-#if defined(__UCLIBC__) && !defined(__UCLIBC_HAS_MMU__)
+#if defined(__UCLIBC__) && !defined(__ARCH_HAS_MMU__)
 #define fork	vfork
 #endif
 
@@ -913,7 +913,7 @@ static void check_memory(void)
 	if (check_free_memory() > 1000)
 		return;
 
-#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
+#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
 	if (stat("/etc/fstab", &statBuf) == 0) {
 		/* swapon -a requires /proc typically */
 		new_init_action(SYSINIT, "/bin/mount -t proc proc /proc", "");
@@ -957,7 +957,7 @@ static void parse_inittab(void)
 		new_init_action(CTRLALTDEL, "/sbin/reboot", "");
 		/* Umount all filesystems on halt/reboot */
 		new_init_action(SHUTDOWN, "/bin/umount -a -r", "");
-#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
+#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
 		/* Swapoff on halt/reboot */
 		new_init_action(SHUTDOWN, "/sbin/swapoff -a", "");
 #endif
diff --git a/shell/hush.c b/shell/hush.c
index ad5ddf0d5..8f4cc9780 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -1439,7 +1439,7 @@ static int run_pipe_real(struct pipe *pi)
 		}
 
 		/* XXX test for failed fork()? */
-#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
+#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
 		if (!(child->pid = fork()))
 #else
 		if (!(child->pid = vfork()))
@@ -2258,7 +2258,7 @@ FILE *generate_stream_from_list(struct pipe *head)
 #if 1
 	int pid, channel[2];
 	if (pipe(channel)<0) bb_perror_msg_and_die("pipe");
-#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
+#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
 	pid=fork();
 #else
 	pid=vfork();
diff --git a/shell/lash.c b/shell/lash.c
index b46cee807..fa416c742 100644
--- a/shell/lash.c
+++ b/shell/lash.c
@@ -1380,7 +1380,7 @@ static int run_command(struct job *newjob, int inbg, int outpipe[2])
 			}
 		}
 
-#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
+#if !defined(__UCLIBC__) || defined(__ARCH_HAS_MMU__)
 		if (!(child->pid = fork()))
 #else
 		if (!(child->pid = vfork()))
-- 
2.25.1