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annotate packages/redboot/current/src/fs/fileio.c @ 1598:d177755187d3

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Fix configuration check so -f XXX works again.
author gthomas
date Mon, 19 Apr 2004 21:26:52 +0000
parents 183857c0ce4b
children 43a89c18d005
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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 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
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73 static void do_mount(int argc, char *argv[]);
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74 static void do_umount(int argc, char *argv[]);
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75
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76 #ifdef CYGPKG_IO_FLASH_BLOCK_DEVICE
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77 #define FLASHPART "[-f <partition>] "
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78 #else
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79 #define FLASHPART
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80 #endif
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81
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82 RedBoot_cmd("mount",
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83 "Mount file system",
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84 FLASHPART "[-d <device>] -t fstype",
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85 do_mount
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86 );
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87 RedBoot_cmd("umount",
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88 "Unmount file system",
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89 "",
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90 do_umount
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91 );
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92
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93 int fileio_mounted = 0;
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94
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95 // Mount disk/filesystem
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96 static void
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97 do_mount(int argc, char *argv[])
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98 {
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99 char *part_str, *dev_str, *type_str;
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100 bool part_set = false, dev_set = false, type_set = false;
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101 struct option_info opts[3];
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102 int err, num_opts = 2;
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103
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104 init_opts(&opts[0], 'd', true, OPTION_ARG_TYPE_STR,
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105 (void *)&dev_str, &dev_set, "device");
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106 init_opts(&opts[1], 't', true, OPTION_ARG_TYPE_STR,
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107 (void *)&type_str, &type_set, "fstype");
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108 #ifdef CYGPKG_IO_FLASH_BLOCK_DEVICE
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109 init_opts(&opts[2], 'f', true, OPTION_ARG_TYPE_STR,
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110 (void *)&part_str, &part_set, "partition");
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111 num_opts++;
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112 #endif
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113
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114 if (!scan_opts(argc, argv, 1, opts, num_opts, NULL, 0, NULL))
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115 return;
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116
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117 if (!type_set) {
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118 diag_printf("Must specify file system type\n");
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119 return;
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120 }
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121 if (fileio_mounted) {
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122 diag_printf("A file system is already mounted\n");
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123 return;
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124 }
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125 #ifdef CYGPKG_IO_FLASH_BLOCK_DEVICE
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126 if (part_set) {
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127 int len;
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128 cyg_io_handle_t h;
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129
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130 if (dev_set && strcmp(dev_str, CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1)) {
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131 diag_printf("May only set one of <device> or <partition>\n");
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132 return;
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133 }
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134
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135 dev_str = CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1;
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136 len = strlen(part_str);
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137
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138 err = cyg_io_lookup(dev_str, &h);
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139 if (err < 0) {
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140 diag_printf("cyg_io_lookup of \"%s\" returned %d\n", err);
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141 return;
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142 }
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143 err = cyg_io_set_config(h, CYG_IO_SET_CONFIG_FLASH_FIS_NAME,
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144 part_str, &len);
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145 if (err < 0) {
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146 diag_printf("FIS partition \"%s\" not found\n",
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147 part_str);
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148 return;
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149 }
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150 }
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151 #endif
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152 err = mount(dev_str, "/", type_str);
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153
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154 if (err) {
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155 diag_printf("Mount failed %d\n", err);
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156 } else {
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157 // diag_printf("Mount %s file system succeeded\n", type_str);
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158 fileio_mounted = 1;
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159 }
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160 }
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161
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162 static void
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163 do_umount(int argc, char *argv[])
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164 {
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165 if (!fileio_mounted) {
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166 return;
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167 }
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168 umount ("/");
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169 fileio_mounted = 0;
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170 }
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171
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172 static int fd;
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173
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174 externC int
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175 fileio_stream_open(connection_info_t *info, int *err)
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176 {
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177 char *filename = info->filename;
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178
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179 if (!fileio_mounted) {
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180 diag_printf("No file system mounted\n");
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181 return -1;
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182 }
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183 fd = open(filename, O_RDONLY);
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184 if (fd < 0) {
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185 diag_printf("Open failed, error %d\n", errno);
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186 return -1;
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187 }
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188 return 0;
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189 }
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190
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191 externC int
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192 fileio_stream_read(char *buf, int size, int *err)
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193 {
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194 int nread;
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195
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196 if ((nread = read(fd, buf, size)) < 0) {
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197 *err = errno;
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198 return -1;
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199 }
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200 return nread;
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201 }
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202
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203 externC void
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204 fileio_stream_close(int *err)
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205 {
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206 close(fd);
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207 }
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208
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209 externC char *
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210 fileio_error(int err)
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211 {
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212 static char myerr[10];
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213
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214 diag_sprintf(myerr, "error %d\n", err);
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215 return myerr;
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216 }
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217
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218 //
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219 // RedBoot interface
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220 //
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221 GETC_IO_FUNCS(fileio_io, fileio_stream_open, fileio_stream_close,
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222 0, fileio_stream_read, fileio_error);
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223 RedBoot_load(file, fileio_io, true, true, 0);
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224