1131476Spjd/*- 2131476Spjd * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3131476Spjd * All rights reserved. 4131476Spjd * 5131476Spjd * Redistribution and use in source and binary forms, with or without 6131476Spjd * modification, are permitted provided that the following conditions 7131476Spjd * are met: 8131476Spjd * 1. Redistributions of source code must retain the above copyright 9131476Spjd * notice, this list of conditions and the following disclaimer. 10131476Spjd * 2. Redistributions in binary form must reproduce the above copyright 11131476Spjd * notice, this list of conditions and the following disclaimer in the 12131476Spjd * documentation and/or other materials provided with the distribution. 13155174Spjd * 14131476Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15131476Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16131476Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17131476Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18131476Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19131476Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20131476Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21131476Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22131476Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23131476Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24131476Spjd * SUCH DAMAGE. 25131476Spjd */ 26131476Spjd 27131476Spjd#include <sys/cdefs.h> 28131476Spjd__FBSDID("$FreeBSD$"); 29131476Spjd 30131476Spjd#include <sys/param.h> 31131476Spjd#include <sys/systm.h> 32131476Spjd#include <sys/kernel.h> 33131476Spjd#include <sys/malloc.h> 34131476Spjd 35131476Spjd#include <geom/geom.h> 36131476Spjd#include <geom/label/g_label.h> 37131476Spjd 38131476Spjd#define G_LABEL_ISO9660_DIR "iso9660" 39131476Spjd 40131476Spjd#define ISO9660_MAGIC "\x01" "CD001" "\x01\x00" 41149495Spjd#define ISO9660_OFFSET 0x8000 42131476Spjd#define VOLUME_LEN 32 43131476Spjd 44131476Spjd 45131476Spjdstatic void 46131476Spjdg_label_iso9660_taste(struct g_consumer *cp, char *label, size_t size) 47131476Spjd{ 48131476Spjd struct g_provider *pp; 49131476Spjd char *sector, *volume; 50131476Spjd 51131476Spjd g_topology_assert_not(); 52131476Spjd pp = cp->provider; 53131476Spjd label[0] = '\0'; 54131476Spjd 55149495Spjd if ((ISO9660_OFFSET % pp->sectorsize) != 0) 56149495Spjd return; 57149495Spjd sector = (char *)g_read_data(cp, ISO9660_OFFSET, pp->sectorsize, 58152971Ssobomax NULL); 59152967Ssobomax if (sector == NULL) 60131476Spjd return; 61131476Spjd if (bcmp(sector, ISO9660_MAGIC, sizeof(ISO9660_MAGIC) - 1) != 0) { 62131476Spjd g_free(sector); 63131476Spjd return; 64131476Spjd } 65131476Spjd G_LABEL_DEBUG(1, "ISO9660 file system detected on %s.", pp->name); 66131476Spjd volume = sector + 0x28; 67131476Spjd bzero(label, size); 68131476Spjd strlcpy(label, volume, MIN(size, VOLUME_LEN)); 69131476Spjd g_free(sector); 70286193Strasz g_label_rtrim(label, size); 71131476Spjd} 72131476Spjd 73199875Straszstruct g_label_desc g_label_iso9660 = { 74131476Spjd .ld_taste = g_label_iso9660_taste, 75199875Strasz .ld_dir = G_LABEL_ISO9660_DIR, 76199875Strasz .ld_enabled = 1 77131476Spjd}; 78199875Strasz 79199875StraszG_LABEL_INIT(iso9660, g_label_iso9660, "Create device nodes for ISO9660 volume names"); 80