hush/coreutils/chmod.c
Rob Landley a75c180e53 Bug 310: be consistent about stat/lstat and chown/lchown to avoid accidentally
modifying permissions or ownership when twiddling symlinks.
2005-12-12 06:58:53 +00:00

113 lines
2.5 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini chmod implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Reworked by (C) 2002 Vladimir Oleynik <dzo@simtreas.ru>
* to correctly parse '-rwxgoa'
*
* 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
*
*/
/* BB_AUDIT SUSv3 compliant */
/* BB_AUDIT GNU defects - unsupported options -c, -f, -v, and long options. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/chmod.html */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "busybox.h"
static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
{
if (!bb_parse_mode((char *)junk, &(statbuf->st_mode)))
bb_error_msg_and_die( "invalid mode: %s", (char *)junk);
if (chmod(fileName, statbuf->st_mode) == 0)
return (TRUE);
bb_perror_msg("%s", fileName); /* Avoid multibyte problems. */
return (FALSE);
}
int chmod_main(int argc, char **argv)
{
int retval = EXIT_SUCCESS;
int recursiveFlag = FALSE;
int count;
char *smode;
char **p;
char *p0;
char opt = '-';
++argv;
count = 0;
for (p = argv ; *p ; p++) {
p0 = p[0];
if (p0[0] == opt) {
if ((p0[1] == '-') && !p0[2]) {
opt = 0; /* Disable further option processing. */
continue;
}
if (p0[1] == 'R') {
char *s = p0 + 2;
while (*s == 'R') {
++s;
}
if (*s) {
bb_show_usage();
}
recursiveFlag = TRUE;
continue;
}
if (count) {
bb_show_usage();
}
}
argv[count] = p0;
++count;
}
argv[count] = NULL;
if (count < 2) {
bb_show_usage();
}
smode = *argv;
++argv;
/* Ok, ready to do the deed now */
do {
if (! recursive_action (*argv, recursiveFlag, TRUE, FALSE,
fileAction, fileAction, smode)) {
retval = EXIT_FAILURE;
}
} while (*++argv);
return retval;
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/