util/misc.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <config.h>
  20
  21 #include <errno.h>
  22 #include <setjmp.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <stdarg.h>
  26 #include <stdint.h>
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <sys/time.h>
  30 #include <time.h>
  31
  32 #include <grub/kernel.h>
  33 #include <grub/dl.h>
  34 #include <grub/misc.h>
  35 #include <grub/cache.h>
  36 #include <grub/emu/misc.h>
  37 #include <grub/util/misc.h>
  38 #include <grub/mm.h>
  39 #include <grub/term.h>
  40 #include <grub/time.h>
  41 #include <grub/i18n.h>
  42 #include <grub/script_sh.h>
  43 #include <grub/emu/hostfile.h>
  44
  45 #define ENABLE_RELOCATABLE 0
  46 #ifdef GRUB_BUILD
  47 const char *program_name = GRUB_BUILD_PROGRAM_NAME;
  48 #else
  49 #include "progname.h"
  50 #endif
  51
  52 #ifdef GRUB_UTIL
  53 int
  54 grub_err_printf (const char *fmt, ...)
  55 {
  56   va_list ap;
  57   int ret;
  58
  59   va_start (ap, fmt);
  60   ret = vfprintf (stderr, fmt, ap);
  61   va_end (ap);
  62
  63   return ret;
  64 }
  65 #endif
  66
  67 char *
  68 grub_util_get_path (const char *dir, const char *file)
  69 {
  70   char *path;
  71
  72   path = (char *) xmalloc (strlen (dir) + 1 + strlen (file) + 1);
  73   sprintf (path, "%s/%s", dir, file);
  74   return path;
  75 }
  76
  77 char *
  78 grub_util_read_image (const char *path)
  79 {
  80   char *img;
  81   FILE *fp;
  82   size_t size;
  83
  84   grub_util_info ("reading %s", path);
  85
  86   size = grub_util_get_image_size (path);
  87   img = (char *) xmalloc (size);
  88
  89   fp = grub_util_fopen (path, "rb");
  90   if (! fp)
  91     grub_util_error (_("cannot open `%s': %s"), path,
  92                      strerror (errno));
  93
  94   if (fread (img, 1, size, fp) != size)
  95     grub_util_error (_("cannot read `%s': %s"), path,
  96                      strerror (errno));
  97
  98   fclose (fp);
  99
 100   return img;
 101 }
 102
 103 void
 104 grub_util_write_image_at (const void *img, size_t size, off_t offset, FILE *out,
 105                           const char *name)
 106 {
 107   grub_util_info ("writing 0x%" GRUB_HOST_PRIxLONG_LONG " bytes at offset 0x%"
 108                   GRUB_HOST_PRIxLONG_LONG,
 109                   (unsigned long long) size, (unsigned long long) offset);
 110   if (fseeko (out, offset, SEEK_SET) == -1)
 111     grub_util_error (_("cannot seek `%s': %s"),
 112                      name, strerror (errno));
 113   if (fwrite (img, 1, size, out) != size)
 114     grub_util_error (_("cannot write to `%s': %s"),
 115                      name, strerror (errno));
 116 }
 117
 118 void
 119 grub_util_write_image (const char *img, size_t size, FILE *out,
 120                        const char *name)
 121 {
 122   grub_util_info ("writing 0x%" GRUB_HOST_PRIxLONG_LONG " bytes", (unsigned long long) size);
 123   if (fwrite (img, 1, size, out) != size)
 124     {
 125       if (!name)
 126         grub_util_error (_("cannot write to the stdout: %s"),
 127                          strerror (errno));
 128       else
 129         grub_util_error (_("cannot write to `%s': %s"),
 130                          name, strerror (errno));
 131     }
 132 }
 133
 134 grub_err_t
 135 grub_script_execute_cmdline (struct grub_script_cmd *cmd __attribute__ ((unused)))
 136 {
 137   return 0;
 138 }
 139
 140 grub_err_t
 141 grub_script_execute_cmdlist (struct grub_script_cmd *cmd __attribute__ ((unused)))
 142 {
 143   return 0;
 144 }
 145
 146 grub_err_t
 147 grub_script_execute_cmdif (struct grub_script_cmd *cmd __attribute__ ((unused)))
 148 {
 149   return 0;
 150 }
 151
 152 grub_err_t
 153 grub_script_execute_cmdfor (struct grub_script_cmd *cmd __attribute__ ((unused)))
 154 {
 155   return 0;
 156 }
 157
 158 grub_err_t
 159 grub_script_execute_cmdwhile (struct grub_script_cmd *cmd __attribute__ ((unused)))
 160 {
 161   return 0;
 162 }
 163
 164 grub_err_t
 165 grub_script_execute (struct grub_script *script)
 166 {
 167   if (script == 0 || script->cmd == 0)
 168     return 0;
 169
 170   return script->cmd->exec (script->cmd);
 171 }
 172
 173 int
 174 grub_getkey (void)
 175 {
 176   return -1;
 177 }
 178
 179 void
 180 grub_refresh (void)
 181 {
 182   fflush (stdout);
 183 }
 184
 185 static void
 186 grub_xputs_real (const char *str)
 187 {
 188   fputs (str, stdout);
 189 }
 190
 191 void (*grub_xputs) (const char *str) = grub_xputs_real;
 192
 193 int
 194 grub_dl_ref (grub_dl_t mod)
 195 {
 196   (void) mod;
 197   return 0;
 198 }
 199
 200 int
 201 grub_dl_unref (grub_dl_t mod)
 202 {
 203   (void) mod;
 204   return 0;
 205 }
 206
 207 /* Some functions that we don't use.  */
 208 void
 209 grub_mm_init_region (void *addr __attribute__ ((unused)),
 210                      grub_size_t size __attribute__ ((unused)))
 211 {
 212 }
 213
 214 void
 215 grub_register_exported_symbols (void)
 216 {
 217 }
 218
 219 /* Used in comparison of arrays of strings with qsort */
 220 int
 221 grub_qsort_strcmp (const void *p1, const void *p2)
 222 {
 223   return strcmp(*(char *const *)p1, *(char *const *)p2);
 224 }
 225