sed: document -E in help text

[oweals/busybox.git] / coreutils / chgrp.c

diff --git a/coreutils/chgrp.c b/coreutils/chgrp.c
index 038c665ddbb685ac4c59a80e5261bd0873d09682..7076db62f9bab7d35ebbaad4f408aa36edddd521 100644 (file)
--- a/coreutils/chgrp.c
+++ b/coreutils/chgrp.c
@@ -1,89 +1,53 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini chgrp implementation for busybox
  *
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
-#include "internal.h"
-#include <grp.h>
-#include <stdio.h>
-
-const char chgrp_usage[] = "chgrp [OPTION]... GROUP FILE...\n"
-    "Change the group membership of each FILE to GROUP.\n"
-    "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
-
+/* BB_AUDIT SUSv3 defects - none? */
+/* BB_AUDIT GNU defects - unsupported long options. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/chgrp.html */
+
+//usage:#define chgrp_trivial_usage
+//usage:       "[-RhLHP"IF_DESKTOP("cvf")"]... GROUP FILE..."
+//usage:#define chgrp_full_usage "\n\n"
+//usage:       "Change the group membership of each FILE to GROUP\n"
+//usage:     "\n       -R      Recurse"
+//usage:     "\n       -h      Affect symlinks instead of symlink targets"
+//usage:     "\n       -L      Traverse all symlinks to directories"
+//usage:     "\n       -H      Traverse symlinks on command line only"
+//usage:     "\n       -P      Don't traverse symlinks (default)"
+//usage:       IF_DESKTOP(
+//usage:     "\n       -c      List changed files"
+//usage:     "\n       -v      Verbose"
+//usage:     "\n       -f      Hide errors"
+//usage:       )
+//usage:
+//usage:#define chgrp_example_usage
+//usage:       "$ ls -l /tmp/foo\n"
+//usage:       "-r--r--r--    1 andersen andersen        0 Apr 12 18:25 /tmp/foo\n"
+//usage:       "$ chgrp root /tmp/foo\n"
+//usage:       "$ ls -l /tmp/foo\n"
+//usage:       "-r--r--r--    1 andersen root            0 Apr 12 18:25 /tmp/foo\n"
+
+#include "libbb.h"
+
+/* This is a NOEXEC applet. Be very careful! */
+
+
+int chgrp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int chgrp_main(int argc, char **argv)
 {
-    const char *cp;
-    int gid;
-    struct group *grp;
-    struct stat statBuf;
-
-    if (argc < 2) {
-       fprintf(stderr, "Usage: %s %s", *argv, chgrp_usage);
-       return 1;
-    }
-    argc--;
-    argv++;
-
-    cp = argv[1];
-    if (isDecimal(*cp)) {
-       gid = 0;
-       while (isDecimal(*cp))
-           gid = gid * 10 + (*cp++ - '0');
-       if (*cp) {
-           fprintf(stderr, "Bad gid value\n");
-           return -1;
-       }
-    } else {
-       grp = getgrnam(cp);
-       if (grp == NULL) {
-           fprintf(stderr, "Unknown group name\n");
-           return -1;
+       /* "chgrp [opts] abc file(s)" == "chown [opts] :abc file(s)" */
+       char **p = argv;
+       while (*++p) {
+               if (p[0][0] != '-') {
+                       p[0] = xasprintf(":%s", p[0]);
+                       break;
+               }
        }
-       gid = grp->gr_gid;
-    }
-    argc--;
-    argv++;
-    while (argc-- > 1) {
-       argv++;
-       if ((stat(*argv, &statBuf) < 0) ||
-           (chown(*argv, statBuf.st_uid, gid) < 0)) {
-           perror(*argv);
-       }
-    }
-    return 1;
+       return chown_main(argc, argv);
 }
-
-
-
-
-
-
-
-
-
-#if 0
-int
-recursive(const char *fileName, BOOL followLinks, const char *pattern,
-         int (*fileAction) (const char *fileName,
-                            const struct stat * statbuf),
-         int (*dirAction) (const char *fileName,
-                           const struct stat * statbuf))
-
-#endif