freebsd-dev/usr.bin/mkimg/format.c

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/*-
* Copyright (c) 2014 Juniper Networks, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/stat.h>
#include <errno.h>
#include <string.h>
#include "image.h"
#include "format.h"
static struct mkimg_format *first;
static struct mkimg_format *format;
struct mkimg_format *
format_iterate(struct mkimg_format *f)
{
return ((f == NULL) ? first : f->next);
}
void
format_register(struct mkimg_format *f)
{
f->next = first;
first = f;
}
int
format_resize(lba_t end)
{
if (format == NULL)
return (ENOSYS);
return (format->resize(end));
}
int
format_select(const char *spec)
{
struct mkimg_format *f;
f = NULL;
while ((f = format_iterate(f)) != NULL) {
if (strcasecmp(spec, f->name) == 0) {
format = f;
return (0);
}
}
return (EINVAL);
}
struct mkimg_format *
format_selected(void)
{
return (format);
}
int
format_write(int fd)
{
int error;
if (format == NULL)
return (ENOSYS);
error = format->write(fd);
return (error);
}