#include <stdio.h>
#include <unistd.h>
-int main (void)
+#include <limits.h>
+#include <string.h>
+
+int
+main (int argc, char ** argv)
{
int pid;
- pid = vfork ();
+ /* A statement before vfork to make sure a breakpoint on main isn't
+ set on vfork below. */
+ pid = 1 + argc;
+ pid = vfork (); /* VFORK */
if (pid == 0) {
+ char prog[PATH_MAX];
+ int len;
+
+ strcpy (prog, argv[0]);
+ len = strlen (prog);
+ /* Replace "foll-vfork" with "vforked-prog". */
+ memcpy (prog + len - 10, "vforked-prog", 12);
+ prog[len + 2] = 0;
+
printf ("I'm the child!\n");
- execlp (BASEDIR "/vforked-prog", BASEDIR "/vforked-prog", (char *)0);
+ execlp (prog, prog, (char *) 0);
perror ("exec failed");
_exit (1);
}