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annotate packages/redboot/current/src/fs/fileio.c @ 1605:43a89c18d005

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Add checking (assert) for size of option arrays. Also fix port for TFTP on little endian systems.
author gthomas
date Fri, 23 Apr 2004 20:38:17 +0000
parents d177755187d3
children 549e69d9a7d0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // fileio.c
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4 //
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5 // RedBoot fileio support
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 // Copyright (C) 2002, 2003, 2004 Gary Thomas
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): dwmw2, msalter
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45 // Date: 2003-11-27
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46 // Purpose:
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47 // Description:
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48 //
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49 // This code is part of RedBoot (tm).
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //==========================================================================
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54
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55 // Shoot me. But I don't want struct timeval because redboot provides it.
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56 #define _POSIX_SOURCE
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57 #include <time.h>
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58 #undef _POSIX_SOURCE
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59
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60 #include <redboot.h>
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61 #include <errno.h>
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62 #include <stdio.h>
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63 #include <fcntl.h>
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64 #include <unistd.h>
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65 #include <string.h>
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66 #ifdef CYGPKG_IO_FLASH
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67 #include <cyg/io/io.h>
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68 #include <cyg/io/flash.h>
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69 #include <cyg/io/config_keys.h>
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70 #endif
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71 #include <cyg/fileio/fileio.h>
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72 #include <cyg/infra/cyg_ass.h> // assertion macros
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73
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74 static void do_mount(int argc, char *argv[]);
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75 static void do_umount(int argc, char *argv[]);
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76
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77 #ifdef CYGPKG_IO_FLASH_BLOCK_DEVICE
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78 #define FLASHPART "[-f <partition>] "
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79 #else
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80 #define FLASHPART
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81 #endif
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82
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83 RedBoot_cmd("mount",
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84 "Mount file system",
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85 FLASHPART "[-d <device>] -t fstype",
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86 do_mount
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87 );
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88 RedBoot_cmd("umount",
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89 "Unmount file system",
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90 "",
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91 do_umount
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92 );
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93
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94 int fileio_mounted = 0;
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95
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96 // Mount disk/filesystem
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97 static void
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98 do_mount(int argc, char *argv[])
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99 {
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100 char *part_str, *dev_str, *type_str;
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101 bool part_set = false, dev_set = false, type_set = false;
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102 struct option_info opts[3];
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103 int err, num_opts = 2;
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104
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105 init_opts(&opts[0], 'd', true, OPTION_ARG_TYPE_STR,
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106 (void *)&dev_str, &dev_set, "device");
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107 init_opts(&opts[1], 't', true, OPTION_ARG_TYPE_STR,
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108 (void *)&type_str, &type_set, "fstype");
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109 #ifdef CYGPKG_IO_FLASH_BLOCK_DEVICE
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110 init_opts(&opts[2], 'f', true, OPTION_ARG_TYPE_STR,
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111 (void *)&part_str, &part_set, "partition");
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112 num_opts++;
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113 #endif
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114
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115 CYG_ASSERT(num_opts <= NUM_ELEMS(opts), "Too many options");
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116
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117 if (!scan_opts(argc, argv, 1, opts, num_opts, NULL, 0, NULL))
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118 return;
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119
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120 if (!type_set) {
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121 diag_printf("Must specify file system type\n");
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122 return;
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123 }
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124 if (fileio_mounted) {
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125 diag_printf("A file system is already mounted\n");
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126 return;
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127 }
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128 #ifdef CYGPKG_IO_FLASH_BLOCK_DEVICE
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129 if (part_set) {
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130 int len;
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131 cyg_io_handle_t h;
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132
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133 if (dev_set && strcmp(dev_str, CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1)) {
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134 diag_printf("May only set one of <device> or <partition>\n");
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135 return;
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136 }
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137
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138 dev_str = CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1;
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139 len = strlen(part_str);
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140
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141 err = cyg_io_lookup(dev_str, &h);
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142 if (err < 0) {
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143 diag_printf("cyg_io_lookup of \"%s\" returned %d\n", err);
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144 return;
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145 }
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146 err = cyg_io_set_config(h, CYG_IO_SET_CONFIG_FLASH_FIS_NAME,
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147 part_str, &len);
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148 if (err < 0) {
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149 diag_printf("FIS partition \"%s\" not found\n",
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150 part_str);
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151 return;
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152 }
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153 }
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154 #endif
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155 err = mount(dev_str, "/", type_str);
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156
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157 if (err) {
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158 diag_printf("Mount failed %d\n", err);
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159 } else {
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160 // diag_printf("Mount %s file system succeeded\n", type_str);
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161 fileio_mounted = 1;
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162 }
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163 }
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164
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165 static void
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166 do_umount(int argc, char *argv[])
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167 {
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168 if (!fileio_mounted) {
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169 return;
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170 }
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171 umount ("/");
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172 fileio_mounted = 0;
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173 }
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174
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175 static int fd;
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176
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177 externC int
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178 fileio_stream_open(connection_info_t *info, int *err)
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179 {
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180 char *filename = info->filename;
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181
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182 if (!fileio_mounted) {
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183 diag_printf("No file system mounted\n");
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184 return -1;
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185 }
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186 fd = open(filename, O_RDONLY);
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187 if (fd < 0) {
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188 diag_printf("Open failed, error %d\n", errno);
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189 return -1;
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190 }
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191 return 0;
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192 }
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193
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194 externC int
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195 fileio_stream_read(char *buf, int size, int *err)
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196 {
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197 int nread;
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198
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199 if ((nread = read(fd, buf, size)) < 0) {
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200 *err = errno;
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201 return -1;
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202 }
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203 return nread;
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204 }
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205
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206 externC void
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207 fileio_stream_close(int *err)
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208 {
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209 close(fd);
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210 }
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211
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212 externC char *
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213 fileio_error(int err)
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214 {
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215 static char myerr[10];
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216
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217 diag_sprintf(myerr, "error %d\n", err);
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218 return myerr;
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219 }
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220
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221 //
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222 // RedBoot interface
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223 //
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224 GETC_IO_FUNCS(fileio_io, fileio_stream_open, fileio_stream_close,
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225 0, fileio_stream_read, fileio_error);
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226 RedBoot_load(file, fileio_io, true, true, 0);
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227