d65f6f7009
. common/include/arch/i386 is not actually an imported sys/arch/i386/include but leftover Minix files; remove and move to include/ . move include/ufs to sys/ufs, where it came from, now that we have a sys/ hierarchy . move mdocml/ to external/bsd/, now we have that . single sys/arch/i386/stand/ import for boot stuff
155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/* $NetBSD: ffs_appleufs.c,v 1.12 2011/11/19 22:51:31 tls Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2002 Darrin B. Jewell
|
|
* 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 ``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 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>
|
|
__KERNEL_RCSID(0, "$NetBSD: ffs_appleufs.c,v 1.12 2011/11/19 22:51:31 tls Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#if defined(_KERNEL)
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/cprng.h>
|
|
#endif
|
|
|
|
#include <ufs/ufs/dinode.h>
|
|
#include <ufs/ufs/ufs_bswap.h>
|
|
#include <ufs/ffs/fs.h>
|
|
#include <ufs/ffs/ffs_extern.h>
|
|
|
|
#if !defined(_KERNEL) && !defined(STANDALONE)
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
#define KASSERT(x) assert(x)
|
|
#endif
|
|
|
|
/*
|
|
* this is the same calculation as in_cksum
|
|
*/
|
|
u_int16_t
|
|
ffs_appleufs_cksum(const struct appleufslabel *appleufs)
|
|
{
|
|
const u_int16_t *p = (const u_int16_t *)appleufs;
|
|
int len = APPLEUFS_LABEL_SIZE; /* sizeof(struct appleufslabel) */
|
|
long res = 0;
|
|
while (len > 1) {
|
|
res += *p++;
|
|
len -= 2;
|
|
}
|
|
#if 0 /* APPLEUFS_LABEL_SIZE is guaranteed to be even */
|
|
if (len == 1)
|
|
res += htobe16(*(u_char *)p<<8);
|
|
#endif
|
|
res = (res >> 16) + (res & 0xffff);
|
|
res += (res >> 16);
|
|
return (~res);
|
|
}
|
|
|
|
/* copies o to n, validating and byteswapping along the way
|
|
* returns 0 if ok, EINVAL if not valid
|
|
*/
|
|
int
|
|
ffs_appleufs_validate(const char *name, const struct appleufslabel *o,
|
|
struct appleufslabel *n)
|
|
{
|
|
struct appleufslabel tmp;
|
|
if (!n) n = &tmp;
|
|
|
|
if (o->ul_magic != be32toh(APPLEUFS_LABEL_MAGIC)) {
|
|
return EINVAL;
|
|
}
|
|
*n = *o;
|
|
n->ul_checksum = 0;
|
|
n->ul_checksum = ffs_appleufs_cksum(n);
|
|
if (n->ul_checksum != o->ul_checksum) {
|
|
#if defined(DIAGNOSTIC) || !defined(_KERNEL)
|
|
printf("%s: invalid APPLE UFS checksum. found 0x%x, expecting 0x%x",
|
|
name,o->ul_checksum,n->ul_checksum);
|
|
#endif
|
|
return EINVAL;
|
|
}
|
|
n->ul_magic = be32toh(o->ul_magic);
|
|
n->ul_version = be32toh(o->ul_version);
|
|
n->ul_time = be32toh(o->ul_time);
|
|
n->ul_namelen = be16toh(o->ul_namelen);
|
|
|
|
if (n->ul_namelen > APPLEUFS_MAX_LABEL_NAME) {
|
|
#if defined(DIAGNOSTIC) || !defined(_KERNEL)
|
|
printf("%s: APPLE UFS label name too long, truncated.\n",
|
|
name);
|
|
#endif
|
|
n->ul_namelen = APPLEUFS_MAX_LABEL_NAME;
|
|
}
|
|
/* if len is max, will set ul_unused1 */
|
|
n->ul_name[n->ul_namelen - 1] = '\0';
|
|
|
|
#ifdef DEBUG
|
|
printf("%s: found APPLE UFS label v%d: \"%s\"\n",
|
|
name,n->ul_version,n->ul_name);
|
|
#endif
|
|
n->ul_uuid = be64toh(o->ul_uuid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
ffs_appleufs_set(struct appleufslabel *appleufs, const char *name, time_t t,
|
|
uint64_t uuid)
|
|
{
|
|
size_t namelen;
|
|
if (!name) name = "untitled";
|
|
if (t == ((time_t)-1)) {
|
|
#if defined(_KERNEL)
|
|
t = time_second;
|
|
#elif defined(STANDALONE)
|
|
t = 0;
|
|
#else
|
|
(void)time(&t);
|
|
#endif
|
|
}
|
|
if (uuid == 0) {
|
|
#if defined(_KERNEL) && !defined(STANDALONE)
|
|
uuid = cprng_fast64();
|
|
#endif
|
|
}
|
|
namelen = strlen(name);
|
|
if (namelen > APPLEUFS_MAX_LABEL_NAME)
|
|
namelen = APPLEUFS_MAX_LABEL_NAME;
|
|
memset(appleufs, 0, APPLEUFS_LABEL_SIZE);
|
|
appleufs->ul_magic = htobe32(APPLEUFS_LABEL_MAGIC);
|
|
appleufs->ul_version = htobe32(APPLEUFS_LABEL_VERSION);
|
|
appleufs->ul_time = htobe32((u_int32_t)t);
|
|
appleufs->ul_namelen = htobe16(namelen);
|
|
strncpy(appleufs->ul_name,name,namelen);
|
|
appleufs->ul_uuid = htobe64(uuid);
|
|
appleufs->ul_checksum = ffs_appleufs_cksum(appleufs);
|
|
}
|