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freebsd/usr.bin/mkimg/format.c
Marcel Moolenaar 5a1302ab2e Replace the use of linker sets with constructors for both the
formats and schemes.  Formats and schemes are registered at
runtime now, rather than collected at link time.
2016-09-25 22:57:59 +00:00

102 lines
2.4 KiB
C

/*-
* 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/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "image.h"
#include "format.h"
#include "mkimg.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);
}