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[oweals/busybox.git] / chroot.c

diff --git a/chroot.c b/chroot.c
index d39549496542978484a089ad02e91c7ac404b254..15f44688103c73fe880a21a533ddf85e3f578fbe 100644 (file)
--- a/chroot.c
+++ b/chroot.c
@@ -20,8 +20,9 @@
  */
 
 #include "internal.h"
+#include <stdlib.h>
 #include <stdio.h>
-#include <unistd.h>
+#include <errno.h>
 
 
 static const char chroot_usage[] = "NEWROOT [COMMAND...]\n"
@@ -31,18 +32,16 @@ static const char chroot_usage[] = "NEWROOT [COMMAND...]\n"
 
 int chroot_main(int argc, char **argv)
 {
-    if (argc < 2) {
-       fprintf(stderr, "Usage: %s %s", *argv, chroot_usage);
-       return( FALSE);
+    if ( (argc < 2) || (**(argv+1) == '-') ) {
+       usage( chroot_usage);
     }
     argc--;
     argv++;
 
-    fprintf(stderr, "new root: %s\n", *argv);
-    
     if (chroot (*argv) || (chdir ("/"))) {
-       perror("cannot chroot");
-       return( FALSE);
+       fprintf(stderr, "chroot: cannot change root directory to %s: %s\n",
+               *argv, strerror(errno));
+       exit( FALSE);
     }
 
     argc--;
@@ -56,10 +55,10 @@ int chroot_main(int argc, char **argv)
        prog = getenv ("SHELL");
        if (!prog)
            prog = "/bin/sh";
-       fprintf(stderr, "no command. running: %s\n", prog);
        execlp (prog, prog, NULL);
     }
-    perror("cannot exec");
-    return(FALSE);
+    fprintf(stderr, "chroot: cannot execute %s: %s\n",
+               *argv, strerror(errno));
+    exit( FALSE);
 }