grub/util/misc.c

271 lines
5.4 KiB
C

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <errno.h>
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdint.h>
#include <string.h>
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
#include <grub/kernel.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/cache.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/mm.h>
#include <grub/term.h>
#include <grub/time.h>
#include <grub/i18n.h>
#include <grub/script_sh.h>
#include <grub/emu/hostfile.h>
#define ENABLE_RELOCATABLE 0
#ifdef GRUB_BUILD
const char *program_name = GRUB_BUILD_PROGRAM_NAME;
#else
#include "progname.h"
#endif
#ifdef GRUB_UTIL
int
grub_err_printf (const char *fmt, ...)
{
va_list ap;
int ret;
va_start (ap, fmt);
ret = vfprintf (stderr, fmt, ap);
va_end (ap);
return ret;
}
#endif
char *
grub_util_get_path (const char *dir, const char *file)
{
char *path;
path = (char *) xmalloc (strlen (dir) + 1 + strlen (file) + 1);
sprintf (path, "%s/%s", dir, file);
return path;
}
size_t
grub_util_get_image_size (const char *path)
{
FILE *f;
size_t ret;
off_t sz;
f = grub_util_fopen (path, "rb");
if (!f)
grub_util_error (_("cannot open `%s': %s"), path, strerror (errno));
fseeko (f, 0, SEEK_END);
sz = ftello (f);
if (sz != (size_t) sz)
grub_util_error (_("file `%s' is too big"), path);
ret = (size_t) sz;
fclose (f);
return ret;
}
char *
grub_util_read_image (const char *path)
{
char *img;
FILE *fp;
size_t size;
grub_util_info ("reading %s", path);
size = grub_util_get_image_size (path);
img = (char *) xmalloc (size);
fp = grub_util_fopen (path, "rb");
if (! fp)
grub_util_error (_("cannot open `%s': %s"), path,
strerror (errno));
if (fread (img, 1, size, fp) != size)
grub_util_error (_("cannot read `%s': %s"), path,
strerror (errno));
fclose (fp);
return img;
}
void
grub_util_load_image (const char *path, char *buf)
{
FILE *fp;
size_t size;
grub_util_info ("reading %s", path);
size = grub_util_get_image_size (path);
fp = grub_util_fopen (path, "rb");
if (! fp)
grub_util_error (_("cannot open `%s': %s"), path,
strerror (errno));
if (fread (buf, 1, size, fp) != size)
grub_util_error (_("cannot read `%s': %s"), path,
strerror (errno));
fclose (fp);
}
void
grub_util_write_image_at (const void *img, size_t size, off_t offset, FILE *out,
const char *name)
{
grub_util_info ("writing 0x%" GRUB_HOST_PRIxLONG_LONG " bytes at offset 0x%"
GRUB_HOST_PRIxLONG_LONG,
(unsigned long long) size, (unsigned long long) offset);
if (fseeko (out, offset, SEEK_SET) == -1)
grub_util_error (_("cannot seek `%s': %s"),
name, strerror (errno));
if (fwrite (img, 1, size, out) != size)
grub_util_error (_("cannot write to `%s': %s"),
name, strerror (errno));
}
void
grub_util_write_image (const char *img, size_t size, FILE *out,
const char *name)
{
grub_util_info ("writing 0x%" GRUB_HOST_PRIxLONG_LONG " bytes", (unsigned long long) size);
if (fwrite (img, 1, size, out) != size)
{
if (!name)
grub_util_error (_("cannot write to the stdout: %s"),
strerror (errno));
else
grub_util_error (_("cannot write to `%s': %s"),
name, strerror (errno));
}
}
grub_err_t
grub_script_execute_cmdline (struct grub_script_cmd *cmd __attribute__ ((unused)))
{
return 0;
}
grub_err_t
grub_script_execute_cmdlist (struct grub_script_cmd *cmd __attribute__ ((unused)))
{
return 0;
}
grub_err_t
grub_script_execute_cmdif (struct grub_script_cmd *cmd __attribute__ ((unused)))
{
return 0;
}
grub_err_t
grub_script_execute_cmdfor (struct grub_script_cmd *cmd __attribute__ ((unused)))
{
return 0;
}
grub_err_t
grub_script_execute_cmdwhile (struct grub_script_cmd *cmd __attribute__ ((unused)))
{
return 0;
}
grub_err_t
grub_script_execute (struct grub_script *script)
{
if (script == 0 || script->cmd == 0)
return 0;
return script->cmd->exec (script->cmd);
}
int
grub_getkey (void)
{
return -1;
}
void
grub_refresh (void)
{
fflush (stdout);
}
static void
grub_xputs_real (const char *str)
{
fputs (str, stdout);
}
void (*grub_xputs) (const char *str) = grub_xputs_real;
int
grub_dl_ref (grub_dl_t mod)
{
(void) mod;
return 0;
}
int
grub_dl_unref (grub_dl_t mod)
{
(void) mod;
return 0;
}
/* Some functions that we don't use. */
void
grub_mm_init_region (void *addr __attribute__ ((unused)),
grub_size_t size __attribute__ ((unused)))
{
}
void
grub_register_exported_symbols (void)
{
}
/* Used in comparison of arrays of strings with qsort */
int
grub_qsort_strcmp (const void *p1, const void *p2)
{
return strcmp(*(char *const *)p1, *(char *const *)p2);
}