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File: [cvs.NetBSD.org] / src / sys / ufs / lfs / lfs_cksum.c (download)
Revision 1.29, Thu Jun 6 00:54:49 2013 UTC (10 years, 9 months ago) by dholland
Cleanups and hacks to make lfs userland stuff build: - lfs_cksum.c doesn't actually need ulfs_inode.h any more. - neither does lfs_itimes.c. - add hacks to fsck_lfs to make it compile. - add hacks to newfs_lfs to make it compile. - fix warning in ulfs_quota.c when quotas are fully disabled (as I guess is happening with the rumpity version) XXX: This commit adds -I${NETBSDSRCDIR}/sys to the Makefiles for XXX: fsck_lfs, newfs_lfs, and lfs_cleanerd. This needs to be cleaned XXX: up ASAP; but I consider this less problematic in the short term XXX: than spewing ulfs_*.h into /usr/include. |
/* $NetBSD: lfs_cksum.c,v 1.29 2013/06/06 00:54:49 dholland Exp $ */ /*- * Copyright (c) 1999, 2000, 2001, 2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Konrad E. Schroder <perseant@hhhh.org>. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /*- * Copyright (c) 1991, 1993 * The Regents of the University of California. 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)lfs_cksum.c 8.2 (Berkeley) 10/9/94 */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: lfs_cksum.c,v 1.29 2013/06/06 00:54:49 dholland Exp $"); #include <sys/param.h> #ifdef _KERNEL # include <sys/systm.h> # include <sys/lock.h> #else # include <stddef.h> #endif #include <sys/mount.h> #include <ufs/lfs/lfs.h> #include <ufs/lfs/lfs_extern.h> /* * Simple, general purpose, fast checksum. Data must be short-aligned. * Returns a u_long in case we ever want to do something more rigorous. * * XXX * Use the TCP/IP checksum instead. */ u_int32_t lfs_cksum_part(void *str, size_t len, u_int32_t sum) { len &= ~(sizeof(u_int16_t) - 1); for (; len; len -= sizeof(u_int16_t)) { sum ^= *(u_int16_t *)str; str = (void *)((u_int16_t *)str + 1); } return (sum); } u_int32_t cksum(void *str, size_t len) { return lfs_cksum_fold(lfs_cksum_part(str, len, 0)); } u_int32_t lfs_sb_cksum(struct dlfs *fs) { size_t size; size = (size_t)offsetof(struct dlfs, dlfs_cksum); return cksum(fs, size); }