Implement first instance of NOFORK applet - echo

find: use NOFORK/NOEXEC; small -exec buglet also eliminated
vfork_daemon_rexec: honor PREFER_APPLETS
echo: small size improvements

find -exec echo {} \; with PREFER_APPLETS=y runs 4 times faster

1 files changed, 5 insertions, 3 deletions

diff --git a/libbb/vfork_daemon_rexec.c b/libbb/vfork_daemon_rexec.c
index ec8b9b1d7..11dbb24fc 100644
--- a/libbb/vfork_daemon_rexec.c
+++ b/libbb/vfork_daemon_rexec.c
@@ -26,14 +26,16 @@ pid_t spawn(char **argv)
         volatile int failed;
         pid_t pid;
 
-        // Be nice to nommu machines.
+// Ain't it a good place to fflush(NULL)?
+
+        /* Be nice to nommu machines. */
         failed = 0;
         pid = vfork();
         if (pid < 0) /* error */
                 return pid;
         if (!pid) { /* child */
-                /* Don't use BB_EXECVP tricks here! */
-                execvp(argv[0], argv);
+                /* This macro is ok - it doesn't do NOEXEC/NOFORK tricks */
+                BB_EXECVP(argv[0], argv);
 
                 /* We are (maybe) sharing a stack with blocked parent,
                  * let parent know we failed and then exit to unblock parent