libmisc/shell/main_umask.c

0001 /**
0002  * @file
0003  *
0004  * @brief UMASK Shell Command Implmentation
0005  */
0006
0007 /*
0008  * Copyright (c) 2001 Fernando Ruiz Casas <fruizcasas@gmail.com>
0009  *
0010  *  The license and distribution terms for this file may be
0011  *  found in the file LICENSE in this distribution or at
0012  *  http://www.rtems.org/license/LICENSE.
0013  */
0014
0015 #ifdef HAVE_CONFIG_H
0016 #include "config.h"
0017 #endif
0018
0019 #include <stdio.h>
0020 #include <unistd.h>
0021 #include <string.h>
0022 #include <errno.h>
0023 #include <sys/types.h>
0024 #include <sys/stat.h>
0025
0026 #include <rtems.h>
0027 #include <rtems/shell.h>
0028 #include <rtems/stringto.h>
0029 #include "internal.h"
0030
0031 static int rtems_shell_main_umask(
0032   int   argc,
0033   char *argv[]
0034 )
0035 {
0036   unsigned long tmp;
0037   mode_t        msk = umask(0);
0038
0039   if (argc == 2) {
0040     if ( rtems_string_to_unsigned_long(argv[1], &tmp, NULL, 0) ) {
0041       printf( "Mask argument (%s) is not a number\n", argv[1] );
0042       return -1;
0043     }
0044     msk = (mode_t) tmp;
0045
0046   }
0047   umask(msk);
0048
0049   msk = umask(0);
0050   printf("0%o\n", (unsigned int) msk);
0051   umask(msk);
0052   return 0;
0053 }
0054
0055 rtems_shell_cmd_t rtems_shell_UMASK_Command = {
0056   "umask",                                    /* name */
0057   "umask [new_umask]",                        /* usage */
0058   "misc",                                     /* topic */
0059   rtems_shell_main_umask,                     /* command */
0060   NULL,                                       /* alias */
0061   NULL                                        /* next */
0062 };