format.c revision 328974
1/*- 2 * Copyright (c) 2014 Juniper Networks, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/11/usr.bin/mkimg/format.c 328974 2018-02-07 15:32:31Z manu $"); 29 30#include <sys/stat.h> 31#include <err.h> 32#include <errno.h> 33#include <stdint.h> 34#include <stdlib.h> 35#include <string.h> 36#include <unistd.h> 37 38#include "image.h" 39#include "format.h" 40#include "mkimg.h" 41 42static struct mkimg_format *first; 43static struct mkimg_format *format; 44 45struct mkimg_format * 46format_iterate(struct mkimg_format *f) 47{ 48 49 return ((f == NULL) ? first : f->next); 50} 51 52void 53format_register(struct mkimg_format *f) 54{ 55 56 f->next = first; 57 first = f; 58} 59 60int 61format_resize(lba_t end) 62{ 63 64 if (format == NULL) 65 return (ENOSYS); 66 return (format->resize(end)); 67} 68 69int 70format_select(const char *spec) 71{ 72 struct mkimg_format *f; 73 74 f = NULL; 75 while ((f = format_iterate(f)) != NULL) { 76 if (strcasecmp(spec, f->name) == 0) { 77 format = f; 78 return (0); 79 } 80 } 81 return (EINVAL); 82} 83 84struct mkimg_format * 85format_selected(void) 86{ 87 88 return (format); 89} 90 91int 92format_write(int fd) 93{ 94 int error; 95 96 if (format == NULL) 97 return (ENOSYS); 98 error = format->write(fd); 99 return (error); 100} 101