libmisc/shell/main_mfill.c

0001 /**
0002  * @file
0003  *
0004  * @brief MFILL 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 <ctype.h>
0020 #include <stdio.h>
0021 #include <string.h>
0022
0023 #include <rtems.h>
0024 #include <rtems/shell.h>
0025 #include <rtems/stringto.h>
0026 #include "internal.h"
0027
0028 static int rtems_shell_main_mfill(
0029   int   argc,
0030   char *argv[]
0031 )
0032 {
0033   unsigned long  tmp;
0034   void          *addr;
0035   size_t         size;
0036   unsigned char  value;
0037
0038   if ( argc != 4 ) {
0039     fprintf(stderr,"%s: too few arguments\n", argv[0]);
0040     return -1;
0041   }
0042
0043   /*
0044    *  Convert arguments into numbers
0045    */
0046   if ( rtems_string_to_pointer(argv[1], &addr, NULL) ) {
0047     printf( "Address argument (%s) is not a number\n", argv[1] );
0048     return -1;
0049   }
0050
0051   if ( rtems_string_to_unsigned_long(argv[2], &tmp, NULL, 0) ) {
0052     printf( "Size argument (%s) is not a number\n", argv[2] );
0053     return -1;
0054   }
0055   size = (size_t) tmp;
0056
0057   if ( rtems_string_to_unsigned_char(argv[3], &value, NULL, 0) ) {
0058     printf( "Value argument (%s) is not a number\n", argv[3] );
0059     return -1;
0060   }
0061
0062   /*
0063    *  Now fill the memory.
0064    */
0065   memset(addr, value, size);
0066
0067   return 0;
0068 }
0069
0070 rtems_shell_cmd_t rtems_shell_MFILL_Command = {
0071   "mfill",                                      /* name */
0072   "mfill address size value",                   /* usage */
0073   "mem",                                        /* topic */
0074   rtems_shell_main_mfill,                       /* command */
0075   NULL,                                         /* alias */
0076   NULL                                          /* next */
0077 };