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/*
* Copyright (c) International Business Machines Corp., 2012
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* File: create.c
* Author: Shaun Wetzstein <shaun@us.ibm.com>
* Descr: --create implementation
* Date: 01/30/2013
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <ctype.h>
#include <regex.h>
#include <clib/attribute.h>
#include <clib/assert.h>
#include <clib/list.h>
#include <clib/list_iter.h>
#include <clib/misc.h>
#include <clib/min.h>
#include <clib/err.h>
#include <clib/raii.h>
#include "main.h"
int command_create(args_t * args)
{
assert(args != NULL);
size_t block = 0;
size_t size = 0;
size_t pad = 0xff;
if (parse_size(args->block, &block) < 0)
return -1;
if (parse_size(args->size, &size) < 0)
return -1;
if (args->pad != NULL)
if (parse_size(args->pad, &pad) < 0)
return -1;
struct stat st;
if (stat(args->target, &st) < 0) {
if (errno == ENOENT) {
create_regular_file(args->target, size, (uint8_t)pad);
} else {
ERRNO(errno);
return -1;
}
} else {
if (st.st_size != size) {
create_regular_file(args->target, size, (uint8_t)pad);
} else {
if (args->force != f_FORCE && st.st_size != size) {
UNEXPECTED("--size '%d' differs from actual "
"size '%lld', use --force to "
"override", size, st.st_size);
return -1;
}
}
}
/* ========================= */
int create(args_t * args, off_t poffset)
{
if (args->verbose == f_VERBOSE)
printf("%llx: create partition table\n", poffset);
const char * target = args->target;
int debug = args->debug;
RAII(FILE*, file, fopen_generic(target, "r+", debug), fclose);
if (file == NULL)
return -1;
RAII(ffs_t*, ffs, __ffs_fcreate(file, poffset, block,
size / block), __ffs_fclose);
if (ffs == NULL)
return -1;
return 0;
}
/* ========================= */
return command(args, create);
}
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