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Remove crc.mod and move crc command to hashsum.mod.

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Remove lib/crc.c - users updated to use gcrypt implementation.

	* grub-core/commands/crc.c: Removed.
	* grub-core/Makefile.core.def (crc): Module removed.
	* grub-core/commands/hashsum.c (aliases[]): Add crc alias.
	* grub-core/commands/hashsum.c (GRUB_MOD_INIT): Register crc command.
	* grub-core/commands/hashsum.c (GRUB_MOD_FINI): Unregister crc command.
	* grub-core/lib/crc.c: Removed.
	* include/grub/lib/crc.h: Removed.
	* Makefile.util.def (crc): Remove lib/crc.c
	* grub-core/Makefile.core.def (libgrub.a): Remove grub-core/lib/crc.c.
	* util/grub-fstest.c (cmd_crd): Use libgcrypt crc implementation.
	* Makefile.util.def (libgrub.a): Add grub-core/lib/libgcrypt-grub/cipher/crc.c.
	* Makefile.util.def (grub-fstest): Add CFLAGS_GCRY to cflags.
	* Makefile.util.def (grub-fstest): Add CPPFLAGS_GCRY to cppflags.
	* grub-core/efiemu/prepare.c (grub_efiemu_crc): Use libgcrypt crc implementation.
This commit is contained in:
Szymon Janc 2010-09-20 01:40:58 +02:00
parent e0337366d1
commit c55f50180d
9 changed files with 55 additions and 193 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
ChangeLog
View file

@ -1,3 +1,23 @@
2010-09-20 Szymon Janc <szymon@janc.net.pl>
Remove crc.mod and move crc command to hashsum.mod.
Remove lib/crc.c - users updated to use gcrypt implementation.
* grub-core/commands/crc.c: Removed.
* grub-core/Makefile.core.def (crc): Module removed.
* grub-core/commands/hashsum.c (aliases[]): Add crc alias.
* grub-core/commands/hashsum.c (GRUB_MOD_INIT): Register crc command.
* grub-core/commands/hashsum.c (GRUB_MOD_FINI): Unregister crc command.
* grub-core/lib/crc.c: Removed.
* include/grub/lib/crc.h: Removed.
* Makefile.util.def (crc): Remove lib/crc.c
* grub-core/Makefile.core.def (libgrub.a): Remove grub-core/lib/crc.c.
* util/grub-fstest.c (cmd_crd): Use libgcrypt crc implementation.
* Makefile.util.def (libgrub.a): Add grub-core/lib/libgcrypt-grub/cipher/crc.c.
* Makefile.util.def (grub-fstest): Add CFLAGS_GCRY to cflags.
* Makefile.util.def (grub-fstest): Add CPPFLAGS_GCRY to cppflags.
* grub-core/efiemu/prepare.c (grub_efiemu_crc): Use libgcrypt crc implementation.
2010-09-20 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/boot/i386/pc/boot.S: Ignore %dl if it's not in a sane range.

4
Makefile.util.def
View file

@ -72,11 +72,11 @@ library = {
common = grub-core/kern/list.c;
common = grub-core/kern/partition.c;
common = grub-core/lib/arg.c;
common = grub-core/lib/crc.c;
common = grub-core/lib/crypto.c;
common = grub-core/lib/envblk.c;
common = grub-core/lib/hexdump.c;
common = grub-core/lib/libgcrypt-grub/cipher/sha512.c;
common = grub-core/lib/libgcrypt-grub/cipher/crc.c;
common = grub-core/lib/LzFind.c;
common = grub-core/lib/LzmaEnc.c;
common = grub-core/lib/pbkdf2.c;
@ -186,6 +186,8 @@ program = {
ldadd = libgrub.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER)';
cflags = '$(CFLAGS_GCRY)';
cppflags = '$(CPPFLAGS_GCRY)';
};
program = {

6
grub-core/Makefile.core.def
View file

@ -486,12 +486,6 @@ module = {
enable = x86;
};
module = {
name = crc;
common = commands/crc.c;
common = lib/crc.c;
};
module = {
name = date;
common = commands/date.c;

72
grub-core/commands/crc.c
View file

@ -1,72 +0,0 @@
/* crc.c - command to calculate the crc32 checksum of a file */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008,2010 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 <grub/dl.h>
#include <grub/disk.h>
#include <grub/file.h>
#include <grub/misc.h>
#include <grub/lib/crc.h>
#include <grub/command.h>
#include <grub/i18n.h>
static grub_err_t
grub_cmd_crc (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
{
grub_file_t file;
char buf[GRUB_DISK_SECTOR_SIZE];
grub_ssize_t size;
grub_uint32_t crc;
if (argc != 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "file name required");
grub_file_filter_disable_compression ();
file = grub_file_open (args[0]);
if (! file)
return 0;
crc = 0;
while ((size = grub_file_read (file, buf, sizeof (buf))) > 0)
crc = grub_getcrc32 (crc, buf, size);
if (grub_errno)
goto fail;
grub_printf ("%08x\n", crc);
fail:
grub_file_close (file);
return 0;
}
static grub_command_t cmd;
GRUB_MOD_INIT(crc)
{
cmd = grub_register_command ("crc", grub_cmd_crc,
N_("FILE"),
N_("Calculate the crc32 checksum of a file."));
}
GRUB_MOD_FINI(crc)
{
grub_unregister_command (cmd);
}

10
grub-core/commands/hashsum.c
View file

@ -41,6 +41,7 @@ struct { const char *name; const char *hashname; } aliases[] =
{"sha256sum", "sha256"},
{"sha512sum", "sha512"},
{"md5sum", "md5"},
{"crc", "crc32"},
};
static inline int
@ -248,7 +249,7 @@ grub_cmd_hashsum (struct grub_extcmd_context *ctxt,
return GRUB_ERR_NONE;
}
static grub_extcmd_t cmd, cmd_md5, cmd_sha256, cmd_sha512;
static grub_extcmd_t cmd, cmd_md5, cmd_sha256, cmd_sha512 , cmd_crc;
GRUB_MOD_INIT(hashsum)
{
@ -272,6 +273,12 @@ GRUB_MOD_INIT(hashsum)
"[FILE1 [FILE2 ...]]"),
N_("Compute or check hash checksum."),
options);
cmd_crc = grub_register_extcmd ("crc", grub_cmd_hashsum, 0,
N_("[-c FILE [-p PREFIX]] "
"[FILE1 [FILE2 ...]]"),
N_("Compute or check hash checksum."),
options);
}
GRUB_MOD_FINI(hashsum)
@ -280,4 +287,5 @@ GRUB_MOD_FINI(hashsum)
grub_unregister_extcmd (cmd_md5);
grub_unregister_extcmd (cmd_sha256);
grub_unregister_extcmd (cmd_sha512);
grub_unregister_extcmd (cmd_crc);
}

25
grub-core/efiemu/prepare.c
View file

@ -20,9 +20,9 @@
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/types.h>
#include <grub/efiemu/efiemu.h>
#include <grub/lib/crc.h>
#include <grub/crypto.h>
grub_err_t
SUFFIX (grub_efiemu_prepare) (struct grub_efiemu_prepare_hook *prepare_hooks,
@ -123,6 +123,7 @@ SUFFIX (grub_efiemu_crc) (void)
int handle;
grub_off_t off;
struct SUFFIX (grub_efiemu_runtime_services) *runtime_services;
grub_uint8_t crc32_context[GRUB_MD_CRC32->contextsize];
/* compute CRC32 of runtime_services */
err = grub_efiemu_resolve_symbol ("efiemu_runtime_services",
@ -132,19 +133,25 @@ SUFFIX (grub_efiemu_crc) (void)
runtime_services = (struct SUFFIX (grub_efiemu_runtime_services) *)
((grub_uint8_t *) grub_efiemu_mm_obtain_request (handle) + off);
runtime_services->hdr.crc32 = 0;
runtime_services->hdr.crc32 = grub_getcrc32
(0, runtime_services, runtime_services->hdr.header_size);
GRUB_MD_CRC32->init(crc32_context);
GRUB_MD_CRC32->write(crc32_context, runtime_services, runtime_services->hdr.header_size);
GRUB_MD_CRC32->final(crc32_context);
runtime_services->hdr.crc32 =
grub_be_to_cpu32(*(grub_uint32_t*)GRUB_MD_CRC32->read(crc32_context));
err = grub_efiemu_resolve_symbol ("efiemu_system_table", &handle, &off);
if (err)
return err;
/* compute CRC32 of system table */
SUFFIX (grub_efiemu_system_table)->hdr.crc32 = 0;
SUFFIX (grub_efiemu_system_table)->hdr.crc32
= grub_getcrc32 (0, SUFFIX (grub_efiemu_system_table),
SUFFIX (grub_efiemu_system_table)->hdr.header_size);
GRUB_MD_CRC32->init(crc32_context);
GRUB_MD_CRC32->write(crc32_context, SUFFIX (grub_efiemu_system_table),
SUFFIX (grub_efiemu_system_table)->hdr.header_size);
GRUB_MD_CRC32->final(crc32_context);
SUFFIX (grub_efiemu_system_table)->hdr.crc32 =
grub_be_to_cpu32(*(grub_uint32_t*)GRUB_MD_CRC32->read(crc32_context));
grub_dprintf ("efiemu","system_table = %p, runtime_services = %p\n",
SUFFIX (grub_efiemu_system_table), runtime_services);

75
grub-core/lib/crc.c
View file

@ -1,75 +0,0 @@
/* crc.c - crc function */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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 <grub/types.h>
#include <grub/lib/crc.h>
static grub_uint32_t crc32_table [256];
static void
init_crc32_table (void)
{
auto grub_uint32_t reflect (grub_uint32_t ref, int len);
grub_uint32_t reflect (grub_uint32_t ref, int len)
{
grub_uint32_t result = 0;
int i;
for (i = 1; i <= len; i++)
{
if (ref & 1)
result |= 1 << (len - i);
ref >>= 1;
}
return result;
}
grub_uint32_t polynomial = 0x04c11db7;
int i, j;
for(i = 0; i < 256; i++)
{
crc32_table[i] = reflect(i, 8) << 24;
for (j = 0; j < 8; j++)
crc32_table[i] = (crc32_table[i] << 1) ^
(crc32_table[i] & (1 << 31) ? polynomial : 0);
crc32_table[i] = reflect(crc32_table[i], 32);
}
}
grub_uint32_t
grub_getcrc32 (grub_uint32_t crc, void *buf, int size)
{
int i;
grub_uint8_t *data = buf;
if (! crc32_table[1])
init_crc32_table ();
crc^= 0xffffffff;
for (i = 0; i < size; i++)
{
crc = (crc >> 8) ^ crc32_table[(crc & 0xFF) ^ *data];
data++;
}
return crc ^ 0xffffffff;
}

25
include/grub/lib/crc.h
View file

@ -1,25 +0,0 @@
/* crc.h - prototypes for crc */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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/>.
*/
#ifndef GRUB_CRC_H
#define GRUB_CRC_H 1
grub_uint32_t grub_getcrc32 (grub_uint32_t crc, void *buf, int size);
#endif /* ! GRUB_CRC_H */

11
util/grub-fstest.c
View file

@ -30,7 +30,7 @@
#include <grub/term.h>
#include <grub/mm.h>
#include <grub/lib/hexdump.h>
#include <grub/lib/crc.h>
#include <grub/crypto.h>
#include <grub/command.h>
#include <grub/i18n.h>
@ -239,19 +239,22 @@ cmd_hex (char *pathname)
static void
cmd_crc (char *pathname)
{
grub_uint32_t crc = 0;
grub_uint8_t crc32_context[GRUB_MD_CRC32->contextsize];
GRUB_MD_CRC32->init(crc32_context);
auto int crc_hook (grub_off_t ofs, char *buf, int len);
int crc_hook (grub_off_t ofs, char *buf, int len)
{
(void) ofs;
crc = grub_getcrc32 (crc, buf, len);
GRUB_MD_CRC32->write(crc32_context, buf, len);
return 0;
}
read_file (pathname, crc_hook);
printf ("%08x\n", crc);
GRUB_MD_CRC32->final(crc32_context);
printf ("%08x\n",
grub_be_to_cpu32(*(grub_uint32_t*)GRUB_MD_CRC32->read(crc32_context)));
}
static void