* libtool.m4: New file.

	* libc/sys/linux/process.c: Implement vfork in terms of fork,
	rather than as a syscall.

1 files changed, 20 insertions, 1 deletions

diff --git a/newlib/libc/sys/linux/process.c b/newlib/libc/sys/linux/process.c
index 0419ec7ef..8ae58b0c5 100644
--- a/newlib/libc/sys/linux/process.c
+++ b/newlib/libc/sys/linux/process.c
@@ -4,6 +4,7 @@
 
 
 #include <sys/unistd.h>
+#include <sys/wait.h>
 #include <machine/syscall.h>
 
 
@@ -11,7 +12,6 @@
 #define __NR__execve __NR_execve
 
 _syscall0(int,fork)
-_syscall0(pid_t,vfork)
 _syscall3(int,_execve,const char *,file,char * const *,argv,char * const *,envp)
 _syscall0(int,getpid)
 _syscall2(int,setpgid,pid_t,pid,pid_t,pgid)
@@ -21,6 +21,25 @@ _syscall0(pid_t,setsid)
 
 weak_alias(__libc_getpid,__getpid);
 
+pid_t vfork(void)
+{
+  pid_t pid;
+
+  pid = fork();
+  
+  if(!pid)
+    {
+      /* In child. */
+      return 0;
+    }
+  else
+    {
+      /* In parent.  Wait for child to finish. */
+      if (waitpid (pid, NULL, 0) < 0)
+        return pid;
+    }
+}
+
 /* FIXME: get rid of noreturn warning */
 
 #define return for (;;)