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Rewrite grub-install, grub-mkrescue, grub-mkstandalone and grub-mknetdir

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the function of these files exceeds what can be sanely handled in shell
	in posix-comaptible way. Also writing it in C extends the functionality
	to non-UNIX-like OS and minimal environments.
This commit is contained in:
Vladimir Serbinenko 2013-11-16 20:21:16 +01:00
parent 9ef81064a3
commit cd46aa6cef
52 changed files with 5811 additions and 2101 deletions
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112
util/config.c Normal file
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@ -0,0 +1,112 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 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 <string.h>
#include <grub/emu/config.h>
#include <grub/util/misc.h>
void
grub_util_parse_config (FILE *f, struct grub_util_config *cfg, int simple)
{
char *buffer = NULL;
size_t sz = 0;
while (getline (&buffer, &sz, f) >= 0)
{
const char *ptr;
for (ptr = buffer; *ptr && grub_isspace (*ptr); ptr++);
if (grub_strncmp (ptr, "GRUB_ENABLE_CRYPTODISK=",
sizeof ("GRUB_ENABLE_CRYPTODISK=") - 1) == 0)
{
ptr += sizeof ("GRUB_ENABLE_CRYPTODISK=") - 1;
if (*ptr == '"' || *ptr == '\'')
ptr++;
if (*ptr == 'y')
cfg->is_cryptodisk_enabled = 1;
continue;
}
if (grub_strncmp (ptr, "GRUB_DISTRIBUTOR=",
sizeof ("GRUB_DISTRIBUTOR=") - 1) == 0)
{
char *optr;
enum { NONE, SNGLQUOT, DBLQUOT } state;
if (simple)
{
free (cfg->grub_distributor);
cfg->grub_distributor = xstrdup (ptr);
continue;
}
free (cfg->grub_distributor);
cfg->grub_distributor = xmalloc (strlen (ptr) + 1);
optr = cfg->grub_distributor;
state = NONE;
for (; *ptr; ptr++)
switch (*ptr)
{
case '\\':
if (state == SNGLQUOT)
{
*optr++ = *ptr;
continue;
}
if (ptr[1])
{
*optr++ = ptr[1];
ptr++;
continue;
}
ptr++;
break;
case '"':
if (state == NONE)
{
state = DBLQUOT;
continue;
}
if (state == DBLQUOT)
{
state = NONE;
continue;
}
*optr++ = *ptr;
continue;
case '\'':
if (state == SNGLQUOT)
{
state = NONE;
continue;
}
if (state == NONE)
{
state = SNGLQUOT;
continue;
}
*optr++ = *ptr;
continue;
default:
*optr++ = *ptr;
continue;
}
*optr = '\0';
}
}
}