1994-12-16 08:55:15 +03:00
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/* $NetBSD: ffs_alloc.c,v 1.6 1994/12/16 05:55:15 mycroft Exp $ */
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1994-06-29 10:39:25 +04:00
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1994-06-08 15:41:58 +04:00
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/*
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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1994-12-14 16:03:35 +03:00
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* @(#)ffs_alloc.c 8.11 (Berkeley) 10/27/94
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1994-06-08 15:41:58 +04:00
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/kernel.h>
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#include <sys/syslog.h>
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#include <vm/vm.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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extern u_long nextgennumber;
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static daddr_t ffs_alloccg __P((struct inode *, int, daddr_t, int));
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static daddr_t ffs_alloccgblk __P((struct fs *, struct cg *, daddr_t));
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static daddr_t ffs_clusteralloc __P((struct inode *, int, daddr_t, int));
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static ino_t ffs_dirpref __P((struct fs *));
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static daddr_t ffs_fragextend __P((struct inode *, int, long, int, int));
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static void ffs_fserr __P((struct fs *, u_int, char *));
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static u_long ffs_hashalloc
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1994-10-20 07:20:55 +03:00
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__P((struct inode *, int, long, int, u_int32_t (*)()));
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1994-06-08 15:41:58 +04:00
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static ino_t ffs_nodealloccg __P((struct inode *, int, daddr_t, int));
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static daddr_t ffs_mapsearch __P((struct fs *, struct cg *, daddr_t, int));
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/*
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* Allocate a block in the file system.
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*
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* The size of the requested block is given, which must be some
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* multiple of fs_fsize and <= fs_bsize.
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* A preference may be optionally specified. If a preference is given
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* the following hierarchy is used to allocate a block:
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* 1) allocate the requested block.
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* 2) allocate a rotationally optimal block in the same cylinder.
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* 3) allocate a block in the same cylinder group.
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* 4) quadradically rehash into other cylinder groups, until an
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* available block is located.
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* If no block preference is given the following heirarchy is used
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* to allocate a block:
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* 1) allocate a block in the cylinder group that contains the
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* inode for the file.
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* 2) quadradically rehash into other cylinder groups, until an
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* available block is located.
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*/
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ffs_alloc(ip, lbn, bpref, size, cred, bnp)
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register struct inode *ip;
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daddr_t lbn, bpref;
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int size;
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struct ucred *cred;
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daddr_t *bnp;
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{
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register struct fs *fs;
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daddr_t bno;
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int cg, error;
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*bnp = 0;
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fs = ip->i_fs;
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#ifdef DIAGNOSTIC
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if ((u_int)size > fs->fs_bsize || fragoff(fs, size) != 0) {
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printf("dev = 0x%x, bsize = %d, size = %d, fs = %s\n",
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ip->i_dev, fs->fs_bsize, size, fs->fs_fsmnt);
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panic("ffs_alloc: bad size");
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}
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if (cred == NOCRED)
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panic("ffs_alloc: missing credential\n");
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#endif /* DIAGNOSTIC */
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if (size == fs->fs_bsize && fs->fs_cstotal.cs_nbfree == 0)
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goto nospace;
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if (cred->cr_uid != 0 && freespace(fs, fs->fs_minfree) <= 0)
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goto nospace;
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#ifdef QUOTA
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if (error = chkdq(ip, (long)btodb(size), cred, 0))
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return (error);
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#endif
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if (bpref >= fs->fs_size)
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bpref = 0;
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if (bpref == 0)
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cg = ino_to_cg(fs, ip->i_number);
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else
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cg = dtog(fs, bpref);
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bno = (daddr_t)ffs_hashalloc(ip, cg, (long)bpref, size,
|
1994-10-20 07:20:55 +03:00
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(u_int32_t (*)())ffs_alloccg);
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1994-06-08 15:41:58 +04:00
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if (bno > 0) {
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ip->i_blocks += btodb(size);
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ip->i_flag |= IN_CHANGE | IN_UPDATE;
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*bnp = bno;
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return (0);
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}
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#ifdef QUOTA
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/*
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* Restore user's disk quota because allocation failed.
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*/
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(void) chkdq(ip, (long)-btodb(size), cred, FORCE);
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#endif
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nospace:
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ffs_fserr(fs, cred->cr_uid, "file system full");
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uprintf("\n%s: write failed, file system is full\n", fs->fs_fsmnt);
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return (ENOSPC);
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}
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/*
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* Reallocate a fragment to a bigger size
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*
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* The number and size of the old block is given, and a preference
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* and new size is also specified. The allocator attempts to extend
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* the original block. Failing that, the regular block allocator is
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* invoked to get an appropriate block.
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*/
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ffs_realloccg(ip, lbprev, bpref, osize, nsize, cred, bpp)
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register struct inode *ip;
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daddr_t lbprev;
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daddr_t bpref;
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int osize, nsize;
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struct ucred *cred;
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struct buf **bpp;
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{
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register struct fs *fs;
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struct buf *bp;
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int cg, request, error;
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daddr_t bprev, bno;
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*bpp = 0;
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fs = ip->i_fs;
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#ifdef DIAGNOSTIC
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if ((u_int)osize > fs->fs_bsize || fragoff(fs, osize) != 0 ||
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(u_int)nsize > fs->fs_bsize || fragoff(fs, nsize) != 0) {
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printf(
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"dev = 0x%x, bsize = %d, osize = %d, nsize = %d, fs = %s\n",
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ip->i_dev, fs->fs_bsize, osize, nsize, fs->fs_fsmnt);
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panic("ffs_realloccg: bad size");
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}
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if (cred == NOCRED)
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panic("ffs_realloccg: missing credential\n");
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#endif /* DIAGNOSTIC */
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if (cred->cr_uid != 0 && freespace(fs, fs->fs_minfree) <= 0)
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goto nospace;
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if ((bprev = ip->i_db[lbprev]) == 0) {
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printf("dev = 0x%x, bsize = %d, bprev = %d, fs = %s\n",
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ip->i_dev, fs->fs_bsize, bprev, fs->fs_fsmnt);
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panic("ffs_realloccg: bad bprev");
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}
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/*
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* Allocate the extra space in the buffer.
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*/
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if (error = bread(ITOV(ip), lbprev, osize, NOCRED, &bp)) {
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brelse(bp);
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return (error);
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}
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#ifdef QUOTA
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if (error = chkdq(ip, (long)btodb(nsize - osize), cred, 0)) {
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brelse(bp);
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return (error);
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}
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#endif
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/*
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* Check for extension in the existing location.
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*/
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cg = dtog(fs, bprev);
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if (bno = ffs_fragextend(ip, cg, (long)bprev, osize, nsize)) {
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if (bp->b_blkno != fsbtodb(fs, bno))
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panic("bad blockno");
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ip->i_blocks += btodb(nsize - osize);
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ip->i_flag |= IN_CHANGE | IN_UPDATE;
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allocbuf(bp, nsize);
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bp->b_flags |= B_DONE;
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bzero((char *)bp->b_data + osize, (u_int)nsize - osize);
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*bpp = bp;
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return (0);
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}
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/*
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* Allocate a new disk location.
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*/
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if (bpref >= fs->fs_size)
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bpref = 0;
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switch ((int)fs->fs_optim) {
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case FS_OPTSPACE:
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/*
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* Allocate an exact sized fragment. Although this makes
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* best use of space, we will waste time relocating it if
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* the file continues to grow. If the fragmentation is
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* less than half of the minimum free reserve, we choose
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* to begin optimizing for time.
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*/
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request = nsize;
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if (fs->fs_minfree < 5 ||
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fs->fs_cstotal.cs_nffree >
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fs->fs_dsize * fs->fs_minfree / (2 * 100))
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break;
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log(LOG_NOTICE, "%s: optimization changed from SPACE to TIME\n",
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fs->fs_fsmnt);
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fs->fs_optim = FS_OPTTIME;
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break;
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case FS_OPTTIME:
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/*
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* At this point we have discovered a file that is trying to
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* grow a small fragment to a larger fragment. To save time,
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* we allocate a full sized block, then free the unused portion.
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* If the file continues to grow, the `ffs_fragextend' call
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* above will be able to grow it in place without further
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* copying. If aberrant programs cause disk fragmentation to
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* grow within 2% of the free reserve, we choose to begin
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* optimizing for space.
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*/
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request = fs->fs_bsize;
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if (fs->fs_cstotal.cs_nffree <
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fs->fs_dsize * (fs->fs_minfree - 2) / 100)
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break;
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log(LOG_NOTICE, "%s: optimization changed from TIME to SPACE\n",
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fs->fs_fsmnt);
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fs->fs_optim = FS_OPTSPACE;
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break;
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default:
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printf("dev = 0x%x, optim = %d, fs = %s\n",
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ip->i_dev, fs->fs_optim, fs->fs_fsmnt);
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panic("ffs_realloccg: bad optim");
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/* NOTREACHED */
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}
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bno = (daddr_t)ffs_hashalloc(ip, cg, (long)bpref, request,
|
1994-10-20 07:20:55 +03:00
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(u_int32_t (*)())ffs_alloccg);
|
1994-06-08 15:41:58 +04:00
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if (bno > 0) {
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bp->b_blkno = fsbtodb(fs, bno);
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(void) vnode_pager_uncache(ITOV(ip));
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ffs_blkfree(ip, bprev, (long)osize);
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if (nsize < request)
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ffs_blkfree(ip, bno + numfrags(fs, nsize),
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(long)(request - nsize));
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ip->i_blocks += btodb(nsize - osize);
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ip->i_flag |= IN_CHANGE | IN_UPDATE;
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allocbuf(bp, nsize);
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bp->b_flags |= B_DONE;
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bzero((char *)bp->b_data + osize, (u_int)nsize - osize);
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*bpp = bp;
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return (0);
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}
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#ifdef QUOTA
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/*
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* Restore user's disk quota because allocation failed.
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*/
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(void) chkdq(ip, (long)-btodb(nsize - osize), cred, FORCE);
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#endif
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brelse(bp);
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nospace:
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/*
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* no space available
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*/
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ffs_fserr(fs, cred->cr_uid, "file system full");
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uprintf("\n%s: write failed, file system is full\n", fs->fs_fsmnt);
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return (ENOSPC);
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|
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|
}
|
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|
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/*
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|
|
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* Reallocate a sequence of blocks into a contiguous sequence of blocks.
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*
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* The vnode and an array of buffer pointers for a range of sequential
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* logical blocks to be made contiguous is given. The allocator attempts
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* to find a range of sequential blocks starting as close as possible to
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* an fs_rotdelay offset from the end of the allocation for the logical
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* block immediately preceeding the current range. If successful, the
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|
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* physical block numbers in the buffer pointers and in the inode are
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* changed to reflect the new allocation. If unsuccessful, the allocation
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* is left unchanged. The success in doing the reallocation is returned.
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|
|
* Note that the error return is not reflected back to the user. Rather
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* the previous block allocation will be used.
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*/
|
1994-07-05 01:06:07 +04:00
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|
#ifdef DEBUG
|
1994-06-08 15:41:58 +04:00
|
|
|
#include <sys/sysctl.h>
|
|
|
|
int doasyncfree = 1;
|
|
|
|
struct ctldebug debug14 = { "doasyncfree", &doasyncfree };
|
1994-12-14 16:03:35 +03:00
|
|
|
int prtrealloc = 0;
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|
|
struct ctldebug debug15 = { "prtrealloc", &prtrealloc };
|
1994-07-05 01:06:07 +04:00
|
|
|
#else
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|
|
#define doasyncfree 1
|
1994-06-08 15:41:58 +04:00
|
|
|
#endif
|
|
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|
int
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|
|
ffs_reallocblks(ap)
|
|
|
|
struct vop_reallocblks_args /* {
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|
|
|
struct vnode *a_vp;
|
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|
|
struct cluster_save *a_buflist;
|
|
|
|
} */ *ap;
|
|
|
|
{
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|
|
|
struct fs *fs;
|
|
|
|
struct inode *ip;
|
|
|
|
struct vnode *vp;
|
|
|
|
struct buf *sbp, *ebp;
|
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|
|
daddr_t *bap, *sbap, *ebap;
|
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|
|
struct cluster_save *buflist;
|
|
|
|
daddr_t start_lbn, end_lbn, soff, eoff, newblk, blkno;
|
|
|
|
struct indir start_ap[NIADDR + 1], end_ap[NIADDR + 1], *idp;
|
|
|
|
int i, len, start_lvl, end_lvl, pref, ssize;
|
|
|
|
|
|
|
|
vp = ap->a_vp;
|
|
|
|
ip = VTOI(vp);
|
|
|
|
fs = ip->i_fs;
|
|
|
|
if (fs->fs_contigsumsize <= 0)
|
|
|
|
return (ENOSPC);
|
|
|
|
buflist = ap->a_buflist;
|
|
|
|
len = buflist->bs_nchildren;
|
|
|
|
start_lbn = buflist->bs_children[0]->b_lblkno;
|
|
|
|
end_lbn = start_lbn + len - 1;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
|
|
for (i = 1; i < len; i++)
|
|
|
|
if (buflist->bs_children[i]->b_lblkno != start_lbn + i)
|
|
|
|
panic("ffs_reallocblks: non-cluster");
|
|
|
|
#endif
|
|
|
|
/*
|
|
|
|
* If the latest allocation is in a new cylinder group, assume that
|
|
|
|
* the filesystem has decided to move and do not force it back to
|
|
|
|
* the previous cylinder group.
|
|
|
|
*/
|
|
|
|
if (dtog(fs, dbtofsb(fs, buflist->bs_children[0]->b_blkno)) !=
|
|
|
|
dtog(fs, dbtofsb(fs, buflist->bs_children[len - 1]->b_blkno)))
|
|
|
|
return (ENOSPC);
|
|
|
|
if (ufs_getlbns(vp, start_lbn, start_ap, &start_lvl) ||
|
|
|
|
ufs_getlbns(vp, end_lbn, end_ap, &end_lvl))
|
|
|
|
return (ENOSPC);
|
|
|
|
/*
|
|
|
|
* Get the starting offset and block map for the first block.
|
|
|
|
*/
|
|
|
|
if (start_lvl == 0) {
|
|
|
|
sbap = &ip->i_db[0];
|
|
|
|
soff = start_lbn;
|
|
|
|
} else {
|
|
|
|
idp = &start_ap[start_lvl - 1];
|
|
|
|
if (bread(vp, idp->in_lbn, (int)fs->fs_bsize, NOCRED, &sbp)) {
|
|
|
|
brelse(sbp);
|
|
|
|
return (ENOSPC);
|
|
|
|
}
|
|
|
|
sbap = (daddr_t *)sbp->b_data;
|
|
|
|
soff = idp->in_off;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Find the preferred location for the cluster.
|
|
|
|
*/
|
|
|
|
pref = ffs_blkpref(ip, start_lbn, soff, sbap);
|
|
|
|
/*
|
|
|
|
* If the block range spans two block maps, get the second map.
|
|
|
|
*/
|
|
|
|
if (end_lvl == 0 || (idp = &end_ap[end_lvl - 1])->in_off + 1 >= len) {
|
|
|
|
ssize = len;
|
|
|
|
} else {
|
|
|
|
#ifdef DIAGNOSTIC
|
|
|
|
if (start_ap[start_lvl-1].in_lbn == idp->in_lbn)
|
|
|
|
panic("ffs_reallocblk: start == end");
|
|
|
|
#endif
|
|
|
|
ssize = len - (idp->in_off + 1);
|
|
|
|
if (bread(vp, idp->in_lbn, (int)fs->fs_bsize, NOCRED, &ebp))
|
|
|
|
goto fail;
|
|
|
|
ebap = (daddr_t *)ebp->b_data;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Search the block map looking for an allocation of the desired size.
|
|
|
|
*/
|
|
|
|
if ((newblk = (daddr_t)ffs_hashalloc(ip, dtog(fs, pref), (long)pref,
|
1994-10-20 07:20:55 +03:00
|
|
|
len, (u_int32_t (*)())ffs_clusteralloc)) == 0)
|
1994-06-08 15:41:58 +04:00
|
|
|
goto fail;
|
|
|
|
/*
|
|
|
|
* We have found a new contiguous block.
|
|
|
|
*
|
|
|
|
* First we have to replace the old block pointers with the new
|
|
|
|
* block pointers in the inode and indirect blocks associated
|
|
|
|
* with the file.
|
|
|
|
*/
|
1994-12-14 16:03:35 +03:00
|
|
|
#ifdef DEBUG
|
|
|
|
if (prtrealloc)
|
|
|
|
printf("realloc: ino %d, lbns %d-%d\n\told:", ip->i_number,
|
|
|
|
start_lbn, end_lbn);
|
|
|
|
#endif
|
1994-06-08 15:41:58 +04:00
|
|
|
blkno = newblk;
|
|
|
|
for (bap = &sbap[soff], i = 0; i < len; i++, blkno += fs->fs_frag) {
|
|
|
|
if (i == ssize)
|
|
|
|
bap = ebap;
|
|
|
|
#ifdef DIAGNOSTIC
|
1994-12-14 16:03:35 +03:00
|
|
|
if (dbtofsb(fs, buflist->bs_children[i]->b_blkno) != *bap)
|
1994-06-08 15:41:58 +04:00
|
|
|
panic("ffs_reallocblks: alloc mismatch");
|
1994-12-14 16:03:35 +03:00
|
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (prtrealloc)
|
|
|
|
printf(" %d,", *bap);
|
1994-06-08 15:41:58 +04:00
|
|
|
#endif
|
|
|
|
*bap++ = blkno;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Next we must write out the modified inode and indirect blocks.
|
|
|
|
* For strict correctness, the writes should be synchronous since
|
|
|
|
* the old block values may have been written to disk. In practise
|
|
|
|
* they are almost never written, but if we are concerned about
|
|
|
|
* strict correctness, the `doasyncfree' flag should be set to zero.
|
|
|
|
*
|
|
|
|
* The test on `doasyncfree' should be changed to test a flag
|
|
|
|
* that shows whether the associated buffers and inodes have
|
|
|
|
* been written. The flag should be set when the cluster is
|
|
|
|
* started and cleared whenever the buffer or inode is flushed.
|
|
|
|
* We can then check below to see if it is set, and do the
|
|
|
|
* synchronous write only when it has been cleared.
|
|
|
|
*/
|
|
|
|
if (sbap != &ip->i_db[0]) {
|
|
|
|
if (doasyncfree)
|
|
|
|
bdwrite(sbp);
|
|
|
|
else
|
|
|
|
bwrite(sbp);
|
|
|
|
} else {
|
|
|
|
ip->i_flag |= IN_CHANGE | IN_UPDATE;
|
|
|
|
if (!doasyncfree)
|
|
|
|
VOP_UPDATE(vp, &time, &time, MNT_WAIT);
|
|
|
|
}
|
|
|
|
if (ssize < len)
|
|
|
|
if (doasyncfree)
|
|
|
|
bdwrite(ebp);
|
|
|
|
else
|
|
|
|
bwrite(ebp);
|
|
|
|
/*
|
|
|
|
* Last, free the old blocks and assign the new blocks to the buffers.
|
|
|
|
*/
|
1994-12-14 16:03:35 +03:00
|
|
|
#ifdef DEBUG
|
|
|
|
if (prtrealloc)
|
|
|
|
printf("\n\tnew:");
|
|
|
|
#endif
|
1994-06-08 15:41:58 +04:00
|
|
|
for (blkno = newblk, i = 0; i < len; i++, blkno += fs->fs_frag) {
|
|
|
|
ffs_blkfree(ip, dbtofsb(fs, buflist->bs_children[i]->b_blkno),
|
|
|
|
fs->fs_bsize);
|
|
|
|
buflist->bs_children[i]->b_blkno = fsbtodb(fs, blkno);
|
1994-12-14 16:03:35 +03:00
|
|
|
#ifdef DEBUG
|
|
|
|
if (prtrealloc)
|
|
|
|
printf(" %d,", blkno);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (prtrealloc) {
|
|
|
|
prtrealloc--;
|
|
|
|
printf("\n");
|
1994-06-08 15:41:58 +04:00
|
|
|
}
|
1994-12-14 16:03:35 +03:00
|
|
|
#endif
|
1994-06-08 15:41:58 +04:00
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
|
|
|
if (ssize < len)
|
|
|
|
brelse(ebp);
|
|
|
|
if (sbap != &ip->i_db[0])
|
|
|
|
brelse(sbp);
|
|
|
|
return (ENOSPC);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate an inode in the file system.
|
|
|
|
*
|
|
|
|
* If allocating a directory, use ffs_dirpref to select the inode.
|
|
|
|
* If allocating in a directory, the following hierarchy is followed:
|
|
|
|
* 1) allocate the preferred inode.
|
|
|
|
* 2) allocate an inode in the same cylinder group.
|
|
|
|
* 3) quadradically rehash into other cylinder groups, until an
|
|
|
|
* available inode is located.
|
|
|
|
* If no inode preference is given the following heirarchy is used
|
|
|
|
* to allocate an inode:
|
|
|
|
* 1) allocate an inode in cylinder group 0.
|
|
|
|
* 2) quadradically rehash into other cylinder groups, until an
|
|
|
|
* available inode is located.
|
|
|
|
*/
|
|
|
|
ffs_valloc(ap)
|
|
|
|
struct vop_valloc_args /* {
|
|
|
|
struct vnode *a_pvp;
|
|
|
|
int a_mode;
|
|
|
|
struct ucred *a_cred;
|
|
|
|
struct vnode **a_vpp;
|
|
|
|
} */ *ap;
|
|
|
|
{
|
|
|
|
register struct vnode *pvp = ap->a_pvp;
|
|
|
|
register struct inode *pip;
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct inode *ip;
|
|
|
|
mode_t mode = ap->a_mode;
|
|
|
|
ino_t ino, ipref;
|
|
|
|
int cg, error;
|
|
|
|
|
|
|
|
*ap->a_vpp = NULL;
|
|
|
|
pip = VTOI(pvp);
|
|
|
|
fs = pip->i_fs;
|
|
|
|
if (fs->fs_cstotal.cs_nifree == 0)
|
|
|
|
goto noinodes;
|
|
|
|
|
|
|
|
if ((mode & IFMT) == IFDIR)
|
|
|
|
ipref = ffs_dirpref(fs);
|
|
|
|
else
|
|
|
|
ipref = pip->i_number;
|
|
|
|
if (ipref >= fs->fs_ncg * fs->fs_ipg)
|
|
|
|
ipref = 0;
|
|
|
|
cg = ino_to_cg(fs, ipref);
|
|
|
|
ino = (ino_t)ffs_hashalloc(pip, cg, (long)ipref, mode, ffs_nodealloccg);
|
|
|
|
if (ino == 0)
|
|
|
|
goto noinodes;
|
|
|
|
error = VFS_VGET(pvp->v_mount, ino, ap->a_vpp);
|
|
|
|
if (error) {
|
|
|
|
VOP_VFREE(pvp, ino, mode);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
ip = VTOI(*ap->a_vpp);
|
|
|
|
if (ip->i_mode) {
|
|
|
|
printf("mode = 0%o, inum = %d, fs = %s\n",
|
|
|
|
ip->i_mode, ip->i_number, fs->fs_fsmnt);
|
|
|
|
panic("ffs_valloc: dup alloc");
|
|
|
|
}
|
|
|
|
if (ip->i_blocks) { /* XXX */
|
|
|
|
printf("free inode %s/%d had %d blocks\n",
|
|
|
|
fs->fs_fsmnt, ino, ip->i_blocks);
|
|
|
|
ip->i_blocks = 0;
|
|
|
|
}
|
|
|
|
ip->i_flags = 0;
|
|
|
|
/*
|
|
|
|
* Set up a new generation number for this inode.
|
|
|
|
*/
|
|
|
|
if (++nextgennumber < (u_long)time.tv_sec)
|
|
|
|
nextgennumber = time.tv_sec;
|
|
|
|
ip->i_gen = nextgennumber;
|
|
|
|
return (0);
|
|
|
|
noinodes:
|
|
|
|
ffs_fserr(fs, ap->a_cred->cr_uid, "out of inodes");
|
|
|
|
uprintf("\n%s: create/symlink failed, no inodes free\n", fs->fs_fsmnt);
|
|
|
|
return (ENOSPC);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find a cylinder to place a directory.
|
|
|
|
*
|
|
|
|
* The policy implemented by this algorithm is to select from
|
|
|
|
* among those cylinder groups with above the average number of
|
|
|
|
* free inodes, the one with the smallest number of directories.
|
|
|
|
*/
|
|
|
|
static ino_t
|
|
|
|
ffs_dirpref(fs)
|
|
|
|
register struct fs *fs;
|
|
|
|
{
|
|
|
|
int cg, minndir, mincg, avgifree;
|
|
|
|
|
|
|
|
avgifree = fs->fs_cstotal.cs_nifree / fs->fs_ncg;
|
|
|
|
minndir = fs->fs_ipg;
|
|
|
|
mincg = 0;
|
|
|
|
for (cg = 0; cg < fs->fs_ncg; cg++)
|
|
|
|
if (fs->fs_cs(fs, cg).cs_ndir < minndir &&
|
|
|
|
fs->fs_cs(fs, cg).cs_nifree >= avgifree) {
|
|
|
|
mincg = cg;
|
|
|
|
minndir = fs->fs_cs(fs, cg).cs_ndir;
|
|
|
|
}
|
|
|
|
return ((ino_t)(fs->fs_ipg * mincg));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Select the desired position for the next block in a file. The file is
|
|
|
|
* logically divided into sections. The first section is composed of the
|
|
|
|
* direct blocks. Each additional section contains fs_maxbpg blocks.
|
|
|
|
*
|
|
|
|
* If no blocks have been allocated in the first section, the policy is to
|
|
|
|
* request a block in the same cylinder group as the inode that describes
|
|
|
|
* the file. If no blocks have been allocated in any other section, the
|
|
|
|
* policy is to place the section in a cylinder group with a greater than
|
|
|
|
* average number of free blocks. An appropriate cylinder group is found
|
|
|
|
* by using a rotor that sweeps the cylinder groups. When a new group of
|
|
|
|
* blocks is needed, the sweep begins in the cylinder group following the
|
|
|
|
* cylinder group from which the previous allocation was made. The sweep
|
|
|
|
* continues until a cylinder group with greater than the average number
|
|
|
|
* of free blocks is found. If the allocation is for the first block in an
|
|
|
|
* indirect block, the information on the previous allocation is unavailable;
|
|
|
|
* here a best guess is made based upon the logical block number being
|
|
|
|
* allocated.
|
|
|
|
*
|
|
|
|
* If a section is already partially allocated, the policy is to
|
|
|
|
* contiguously allocate fs_maxcontig blocks. The end of one of these
|
|
|
|
* contiguous blocks and the beginning of the next is physically separated
|
|
|
|
* so that the disk head will be in transit between them for at least
|
|
|
|
* fs_rotdelay milliseconds. This is to allow time for the processor to
|
|
|
|
* schedule another I/O transfer.
|
|
|
|
*/
|
|
|
|
daddr_t
|
|
|
|
ffs_blkpref(ip, lbn, indx, bap)
|
|
|
|
struct inode *ip;
|
|
|
|
daddr_t lbn;
|
|
|
|
int indx;
|
|
|
|
daddr_t *bap;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register int cg;
|
|
|
|
int avgbfree, startcg;
|
|
|
|
daddr_t nextblk;
|
|
|
|
|
|
|
|
fs = ip->i_fs;
|
|
|
|
if (indx % fs->fs_maxbpg == 0 || bap[indx - 1] == 0) {
|
|
|
|
if (lbn < NDADDR) {
|
|
|
|
cg = ino_to_cg(fs, ip->i_number);
|
|
|
|
return (fs->fs_fpg * cg + fs->fs_frag);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Find a cylinder with greater than average number of
|
|
|
|
* unused data blocks.
|
|
|
|
*/
|
|
|
|
if (indx == 0 || bap[indx - 1] == 0)
|
|
|
|
startcg =
|
|
|
|
ino_to_cg(fs, ip->i_number) + lbn / fs->fs_maxbpg;
|
|
|
|
else
|
|
|
|
startcg = dtog(fs, bap[indx - 1]) + 1;
|
|
|
|
startcg %= fs->fs_ncg;
|
|
|
|
avgbfree = fs->fs_cstotal.cs_nbfree / fs->fs_ncg;
|
|
|
|
for (cg = startcg; cg < fs->fs_ncg; cg++)
|
|
|
|
if (fs->fs_cs(fs, cg).cs_nbfree >= avgbfree) {
|
|
|
|
fs->fs_cgrotor = cg;
|
|
|
|
return (fs->fs_fpg * cg + fs->fs_frag);
|
|
|
|
}
|
|
|
|
for (cg = 0; cg <= startcg; cg++)
|
|
|
|
if (fs->fs_cs(fs, cg).cs_nbfree >= avgbfree) {
|
|
|
|
fs->fs_cgrotor = cg;
|
|
|
|
return (fs->fs_fpg * cg + fs->fs_frag);
|
|
|
|
}
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* One or more previous blocks have been laid out. If less
|
|
|
|
* than fs_maxcontig previous blocks are contiguous, the
|
|
|
|
* next block is requested contiguously, otherwise it is
|
|
|
|
* requested rotationally delayed by fs_rotdelay milliseconds.
|
|
|
|
*/
|
|
|
|
nextblk = bap[indx - 1] + fs->fs_frag;
|
|
|
|
if (indx < fs->fs_maxcontig || bap[indx - fs->fs_maxcontig] +
|
|
|
|
blkstofrags(fs, fs->fs_maxcontig) != nextblk)
|
|
|
|
return (nextblk);
|
|
|
|
if (fs->fs_rotdelay != 0)
|
|
|
|
/*
|
|
|
|
* Here we convert ms of delay to frags as:
|
|
|
|
* (frags) = (ms) * (rev/sec) * (sect/rev) /
|
|
|
|
* ((sect/frag) * (ms/sec))
|
|
|
|
* then round up to the next block.
|
|
|
|
*/
|
|
|
|
nextblk += roundup(fs->fs_rotdelay * fs->fs_rps * fs->fs_nsect /
|
|
|
|
(NSPF(fs) * 1000), fs->fs_frag);
|
|
|
|
return (nextblk);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Implement the cylinder overflow algorithm.
|
|
|
|
*
|
|
|
|
* The policy implemented by this algorithm is:
|
|
|
|
* 1) allocate the block in its requested cylinder group.
|
|
|
|
* 2) quadradically rehash on the cylinder group number.
|
|
|
|
* 3) brute force search for a free block.
|
|
|
|
*/
|
|
|
|
/*VARARGS5*/
|
|
|
|
static u_long
|
|
|
|
ffs_hashalloc(ip, cg, pref, size, allocator)
|
|
|
|
struct inode *ip;
|
|
|
|
int cg;
|
|
|
|
long pref;
|
|
|
|
int size; /* size for data blocks, mode for inodes */
|
1994-10-20 07:20:55 +03:00
|
|
|
u_int32_t (*allocator)();
|
1994-06-08 15:41:58 +04:00
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
long result;
|
|
|
|
int i, icg = cg;
|
|
|
|
|
|
|
|
fs = ip->i_fs;
|
|
|
|
/*
|
|
|
|
* 1: preferred cylinder group
|
|
|
|
*/
|
|
|
|
result = (*allocator)(ip, cg, pref, size);
|
|
|
|
if (result)
|
|
|
|
return (result);
|
|
|
|
/*
|
|
|
|
* 2: quadratic rehash
|
|
|
|
*/
|
|
|
|
for (i = 1; i < fs->fs_ncg; i *= 2) {
|
|
|
|
cg += i;
|
|
|
|
if (cg >= fs->fs_ncg)
|
|
|
|
cg -= fs->fs_ncg;
|
|
|
|
result = (*allocator)(ip, cg, 0, size);
|
|
|
|
if (result)
|
|
|
|
return (result);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* 3: brute force search
|
|
|
|
* Note that we start at i == 2, since 0 was checked initially,
|
|
|
|
* and 1 is always checked in the quadratic rehash.
|
|
|
|
*/
|
|
|
|
cg = (icg + 2) % fs->fs_ncg;
|
|
|
|
for (i = 2; i < fs->fs_ncg; i++) {
|
|
|
|
result = (*allocator)(ip, cg, 0, size);
|
|
|
|
if (result)
|
|
|
|
return (result);
|
|
|
|
cg++;
|
|
|
|
if (cg == fs->fs_ncg)
|
|
|
|
cg = 0;
|
|
|
|
}
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine whether a fragment can be extended.
|
|
|
|
*
|
|
|
|
* Check to see if the necessary fragments are available, and
|
|
|
|
* if they are, allocate them.
|
|
|
|
*/
|
|
|
|
static daddr_t
|
|
|
|
ffs_fragextend(ip, cg, bprev, osize, nsize)
|
|
|
|
struct inode *ip;
|
|
|
|
int cg;
|
|
|
|
long bprev;
|
|
|
|
int osize, nsize;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
struct buf *bp;
|
|
|
|
long bno;
|
|
|
|
int frags, bbase;
|
|
|
|
int i, error;
|
|
|
|
|
|
|
|
fs = ip->i_fs;
|
|
|
|
if (fs->fs_cs(fs, cg).cs_nffree < numfrags(fs, nsize - osize))
|
|
|
|
return (NULL);
|
|
|
|
frags = numfrags(fs, nsize);
|
|
|
|
bbase = fragnum(fs, bprev);
|
|
|
|
if (bbase > fragnum(fs, (bprev + frags - 1))) {
|
|
|
|
/* cannot extend across a block boundary */
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
error = bread(ip->i_devvp, fsbtodb(fs, cgtod(fs, cg)),
|
|
|
|
(int)fs->fs_cgsize, NOCRED, &bp);
|
|
|
|
if (error) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
cgp = (struct cg *)bp->b_data;
|
|
|
|
if (!cg_chkmagic(cgp)) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
cgp->cg_time = time.tv_sec;
|
|
|
|
bno = dtogd(fs, bprev);
|
|
|
|
for (i = numfrags(fs, osize); i < frags; i++)
|
|
|
|
if (isclr(cg_blksfree(cgp), bno + i)) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* the current fragment can be extended
|
|
|
|
* deduct the count on fragment being extended into
|
|
|
|
* increase the count on the remaining fragment (if any)
|
|
|
|
* allocate the extended piece
|
|
|
|
*/
|
|
|
|
for (i = frags; i < fs->fs_frag - bbase; i++)
|
|
|
|
if (isclr(cg_blksfree(cgp), bno + i))
|
|
|
|
break;
|
|
|
|
cgp->cg_frsum[i - numfrags(fs, osize)]--;
|
|
|
|
if (i != frags)
|
|
|
|
cgp->cg_frsum[i - frags]++;
|
|
|
|
for (i = numfrags(fs, osize); i < frags; i++) {
|
|
|
|
clrbit(cg_blksfree(cgp), bno + i);
|
|
|
|
cgp->cg_cs.cs_nffree--;
|
|
|
|
fs->fs_cstotal.cs_nffree--;
|
|
|
|
fs->fs_cs(fs, cg).cs_nffree--;
|
|
|
|
}
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
bdwrite(bp);
|
|
|
|
return (bprev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine whether a block can be allocated.
|
|
|
|
*
|
|
|
|
* Check to see if a block of the appropriate size is available,
|
|
|
|
* and if it is, allocate it.
|
|
|
|
*/
|
|
|
|
static daddr_t
|
|
|
|
ffs_alloccg(ip, cg, bpref, size)
|
|
|
|
struct inode *ip;
|
|
|
|
int cg;
|
|
|
|
daddr_t bpref;
|
|
|
|
int size;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
struct buf *bp;
|
|
|
|
register int i;
|
|
|
|
int error, bno, frags, allocsiz;
|
|
|
|
|
|
|
|
fs = ip->i_fs;
|
|
|
|
if (fs->fs_cs(fs, cg).cs_nbfree == 0 && size == fs->fs_bsize)
|
|
|
|
return (NULL);
|
|
|
|
error = bread(ip->i_devvp, fsbtodb(fs, cgtod(fs, cg)),
|
|
|
|
(int)fs->fs_cgsize, NOCRED, &bp);
|
|
|
|
if (error) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
cgp = (struct cg *)bp->b_data;
|
|
|
|
if (!cg_chkmagic(cgp) ||
|
|
|
|
(cgp->cg_cs.cs_nbfree == 0 && size == fs->fs_bsize)) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
cgp->cg_time = time.tv_sec;
|
|
|
|
if (size == fs->fs_bsize) {
|
|
|
|
bno = ffs_alloccgblk(fs, cgp, bpref);
|
|
|
|
bdwrite(bp);
|
|
|
|
return (bno);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* check to see if any fragments are already available
|
|
|
|
* allocsiz is the size which will be allocated, hacking
|
|
|
|
* it down to a smaller size if necessary
|
|
|
|
*/
|
|
|
|
frags = numfrags(fs, size);
|
|
|
|
for (allocsiz = frags; allocsiz < fs->fs_frag; allocsiz++)
|
|
|
|
if (cgp->cg_frsum[allocsiz] != 0)
|
|
|
|
break;
|
|
|
|
if (allocsiz == fs->fs_frag) {
|
|
|
|
/*
|
|
|
|
* no fragments were available, so a block will be
|
|
|
|
* allocated, and hacked up
|
|
|
|
*/
|
|
|
|
if (cgp->cg_cs.cs_nbfree == 0) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
bno = ffs_alloccgblk(fs, cgp, bpref);
|
|
|
|
bpref = dtogd(fs, bno);
|
|
|
|
for (i = frags; i < fs->fs_frag; i++)
|
|
|
|
setbit(cg_blksfree(cgp), bpref + i);
|
|
|
|
i = fs->fs_frag - frags;
|
|
|
|
cgp->cg_cs.cs_nffree += i;
|
|
|
|
fs->fs_cstotal.cs_nffree += i;
|
|
|
|
fs->fs_cs(fs, cg).cs_nffree += i;
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
cgp->cg_frsum[i]++;
|
|
|
|
bdwrite(bp);
|
|
|
|
return (bno);
|
|
|
|
}
|
|
|
|
bno = ffs_mapsearch(fs, cgp, bpref, allocsiz);
|
|
|
|
if (bno < 0) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
for (i = 0; i < frags; i++)
|
|
|
|
clrbit(cg_blksfree(cgp), bno + i);
|
|
|
|
cgp->cg_cs.cs_nffree -= frags;
|
|
|
|
fs->fs_cstotal.cs_nffree -= frags;
|
|
|
|
fs->fs_cs(fs, cg).cs_nffree -= frags;
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
cgp->cg_frsum[allocsiz]--;
|
|
|
|
if (frags != allocsiz)
|
|
|
|
cgp->cg_frsum[allocsiz - frags]++;
|
|
|
|
bdwrite(bp);
|
|
|
|
return (cg * fs->fs_fpg + bno);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate a block in a cylinder group.
|
|
|
|
*
|
|
|
|
* This algorithm implements the following policy:
|
|
|
|
* 1) allocate the requested block.
|
|
|
|
* 2) allocate a rotationally optimal block in the same cylinder.
|
|
|
|
* 3) allocate the next available block on the block rotor for the
|
|
|
|
* specified cylinder group.
|
|
|
|
* Note that this routine only allocates fs_bsize blocks; these
|
|
|
|
* blocks may be fragmented by the routine that allocates them.
|
|
|
|
*/
|
|
|
|
static daddr_t
|
|
|
|
ffs_alloccgblk(fs, cgp, bpref)
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
daddr_t bpref;
|
|
|
|
{
|
|
|
|
daddr_t bno, blkno;
|
|
|
|
int cylno, pos, delta;
|
|
|
|
short *cylbp;
|
|
|
|
register int i;
|
|
|
|
|
|
|
|
if (bpref == 0 || dtog(fs, bpref) != cgp->cg_cgx) {
|
|
|
|
bpref = cgp->cg_rotor;
|
|
|
|
goto norot;
|
|
|
|
}
|
|
|
|
bpref = blknum(fs, bpref);
|
|
|
|
bpref = dtogd(fs, bpref);
|
|
|
|
/*
|
|
|
|
* if the requested block is available, use it
|
|
|
|
*/
|
|
|
|
if (ffs_isblock(fs, cg_blksfree(cgp), fragstoblks(fs, bpref))) {
|
|
|
|
bno = bpref;
|
|
|
|
goto gotit;
|
|
|
|
}
|
1994-12-16 08:55:15 +03:00
|
|
|
if (fs->fs_cpc == 0 || fs->fs_nrpos <= 1) {
|
1994-06-08 15:41:58 +04:00
|
|
|
/*
|
|
|
|
* Block layout information is not available.
|
|
|
|
* Leaving bpref unchanged means we take the
|
|
|
|
* next available free block following the one
|
|
|
|
* we just allocated. Hopefully this will at
|
|
|
|
* least hit a track cache on drives of unknown
|
|
|
|
* geometry (e.g. SCSI).
|
|
|
|
*/
|
|
|
|
goto norot;
|
|
|
|
}
|
1994-12-16 08:55:15 +03:00
|
|
|
/*
|
|
|
|
* check for a block available on the same cylinder
|
|
|
|
*/
|
|
|
|
cylno = cbtocylno(fs, bpref);
|
|
|
|
if (cg_blktot(cgp)[cylno] == 0)
|
|
|
|
goto norot;
|
1994-06-08 15:41:58 +04:00
|
|
|
/*
|
|
|
|
* check the summary information to see if a block is
|
|
|
|
* available in the requested cylinder starting at the
|
|
|
|
* requested rotational position and proceeding around.
|
|
|
|
*/
|
|
|
|
cylbp = cg_blks(fs, cgp, cylno);
|
|
|
|
pos = cbtorpos(fs, bpref);
|
|
|
|
for (i = pos; i < fs->fs_nrpos; i++)
|
|
|
|
if (cylbp[i] > 0)
|
|
|
|
break;
|
|
|
|
if (i == fs->fs_nrpos)
|
|
|
|
for (i = 0; i < pos; i++)
|
|
|
|
if (cylbp[i] > 0)
|
|
|
|
break;
|
|
|
|
if (cylbp[i] > 0) {
|
|
|
|
/*
|
|
|
|
* found a rotational position, now find the actual
|
|
|
|
* block. A panic if none is actually there.
|
|
|
|
*/
|
|
|
|
pos = cylno % fs->fs_cpc;
|
|
|
|
bno = (cylno - pos) * fs->fs_spc / NSPB(fs);
|
|
|
|
if (fs_postbl(fs, pos)[i] == -1) {
|
|
|
|
printf("pos = %d, i = %d, fs = %s\n",
|
|
|
|
pos, i, fs->fs_fsmnt);
|
|
|
|
panic("ffs_alloccgblk: cyl groups corrupted");
|
|
|
|
}
|
|
|
|
for (i = fs_postbl(fs, pos)[i];; ) {
|
|
|
|
if (ffs_isblock(fs, cg_blksfree(cgp), bno + i)) {
|
|
|
|
bno = blkstofrags(fs, (bno + i));
|
|
|
|
goto gotit;
|
|
|
|
}
|
|
|
|
delta = fs_rotbl(fs)[i];
|
|
|
|
if (delta <= 0 ||
|
|
|
|
delta + i > fragstoblks(fs, fs->fs_fpg))
|
|
|
|
break;
|
|
|
|
i += delta;
|
|
|
|
}
|
|
|
|
printf("pos = %d, i = %d, fs = %s\n", pos, i, fs->fs_fsmnt);
|
|
|
|
panic("ffs_alloccgblk: can't find blk in cyl");
|
|
|
|
}
|
|
|
|
norot:
|
|
|
|
/*
|
|
|
|
* no blocks in the requested cylinder, so take next
|
|
|
|
* available one in this cylinder group.
|
|
|
|
*/
|
|
|
|
bno = ffs_mapsearch(fs, cgp, bpref, (int)fs->fs_frag);
|
|
|
|
if (bno < 0)
|
|
|
|
return (NULL);
|
|
|
|
cgp->cg_rotor = bno;
|
|
|
|
gotit:
|
|
|
|
blkno = fragstoblks(fs, bno);
|
|
|
|
ffs_clrblock(fs, cg_blksfree(cgp), (long)blkno);
|
|
|
|
ffs_clusteracct(fs, cgp, blkno, -1);
|
|
|
|
cgp->cg_cs.cs_nbfree--;
|
|
|
|
fs->fs_cstotal.cs_nbfree--;
|
|
|
|
fs->fs_cs(fs, cgp->cg_cgx).cs_nbfree--;
|
|
|
|
cylno = cbtocylno(fs, bno);
|
|
|
|
cg_blks(fs, cgp, cylno)[cbtorpos(fs, bno)]--;
|
|
|
|
cg_blktot(cgp)[cylno]--;
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
return (cgp->cg_cgx * fs->fs_fpg + bno);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine whether a cluster can be allocated.
|
|
|
|
*
|
|
|
|
* We do not currently check for optimal rotational layout if there
|
|
|
|
* are multiple choices in the same cylinder group. Instead we just
|
|
|
|
* take the first one that we find following bpref.
|
|
|
|
*/
|
|
|
|
static daddr_t
|
|
|
|
ffs_clusteralloc(ip, cg, bpref, len)
|
|
|
|
struct inode *ip;
|
|
|
|
int cg;
|
|
|
|
daddr_t bpref;
|
|
|
|
int len;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
struct buf *bp;
|
|
|
|
int i, run, bno, bit, map;
|
|
|
|
u_char *mapp;
|
1994-12-14 16:03:35 +03:00
|
|
|
int32_t *lp;
|
1994-06-08 15:41:58 +04:00
|
|
|
|
|
|
|
fs = ip->i_fs;
|
1994-12-14 16:03:35 +03:00
|
|
|
if (fs->fs_maxcluster[cg] < len)
|
1994-06-08 15:41:58 +04:00
|
|
|
return (NULL);
|
|
|
|
if (bread(ip->i_devvp, fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize,
|
|
|
|
NOCRED, &bp))
|
|
|
|
goto fail;
|
|
|
|
cgp = (struct cg *)bp->b_data;
|
|
|
|
if (!cg_chkmagic(cgp))
|
|
|
|
goto fail;
|
|
|
|
/*
|
|
|
|
* Check to see if a cluster of the needed size (or bigger) is
|
|
|
|
* available in this cylinder group.
|
|
|
|
*/
|
1994-12-14 16:03:35 +03:00
|
|
|
lp = &cg_clustersum(cgp)[len];
|
1994-06-08 15:41:58 +04:00
|
|
|
for (i = len; i <= fs->fs_contigsumsize; i++)
|
1994-12-14 16:03:35 +03:00
|
|
|
if (*lp++ > 0)
|
1994-06-08 15:41:58 +04:00
|
|
|
break;
|
1994-12-14 16:03:35 +03:00
|
|
|
if (i > fs->fs_contigsumsize) {
|
|
|
|
/*
|
|
|
|
* This is the first time looking for a cluster in this
|
|
|
|
* cylinder group. Update the cluster summary information
|
|
|
|
* to reflect the true maximum sized cluster so that
|
|
|
|
* future cluster allocation requests can avoid reading
|
|
|
|
* the cylinder group map only to find no clusters.
|
|
|
|
*/
|
|
|
|
lp = &cg_clustersum(cgp)[len - 1];
|
|
|
|
for (i = len - 1; i > 0; i--)
|
|
|
|
if (*lp-- > 0)
|
|
|
|
break;
|
|
|
|
fs->fs_maxcluster[cg] = i;
|
1994-06-08 15:41:58 +04:00
|
|
|
goto fail;
|
1994-12-14 16:03:35 +03:00
|
|
|
}
|
1994-06-08 15:41:58 +04:00
|
|
|
/*
|
|
|
|
* Search the cluster map to find a big enough cluster.
|
|
|
|
* We take the first one that we find, even if it is larger
|
|
|
|
* than we need as we prefer to get one close to the previous
|
|
|
|
* block allocation. We do not search before the current
|
|
|
|
* preference point as we do not want to allocate a block
|
|
|
|
* that is allocated before the previous one (as we will
|
|
|
|
* then have to wait for another pass of the elevator
|
|
|
|
* algorithm before it will be read). We prefer to fail and
|
|
|
|
* be recalled to try an allocation in the next cylinder group.
|
|
|
|
*/
|
|
|
|
if (dtog(fs, bpref) != cg)
|
|
|
|
bpref = 0;
|
|
|
|
else
|
|
|
|
bpref = fragstoblks(fs, dtogd(fs, blknum(fs, bpref)));
|
|
|
|
mapp = &cg_clustersfree(cgp)[bpref / NBBY];
|
|
|
|
map = *mapp++;
|
|
|
|
bit = 1 << (bpref % NBBY);
|
|
|
|
for (run = 0, i = bpref; i < cgp->cg_nclusterblks; i++) {
|
|
|
|
if ((map & bit) == 0) {
|
|
|
|
run = 0;
|
|
|
|
} else {
|
|
|
|
run++;
|
|
|
|
if (run == len)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if ((i & (NBBY - 1)) != (NBBY - 1)) {
|
|
|
|
bit <<= 1;
|
|
|
|
} else {
|
|
|
|
map = *mapp++;
|
|
|
|
bit = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (i == cgp->cg_nclusterblks)
|
|
|
|
goto fail;
|
|
|
|
/*
|
|
|
|
* Allocate the cluster that we have found.
|
|
|
|
*/
|
|
|
|
bno = cg * fs->fs_fpg + blkstofrags(fs, i - run + 1);
|
|
|
|
len = blkstofrags(fs, len);
|
|
|
|
for (i = 0; i < len; i += fs->fs_frag)
|
|
|
|
if (ffs_alloccgblk(fs, cgp, bno + i) != bno + i)
|
|
|
|
panic("ffs_clusteralloc: lost block");
|
|
|
|
brelse(bp);
|
|
|
|
return (bno);
|
|
|
|
|
|
|
|
fail:
|
|
|
|
brelse(bp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine whether an inode can be allocated.
|
|
|
|
*
|
|
|
|
* Check to see if an inode is available, and if it is,
|
|
|
|
* allocate it using the following policy:
|
|
|
|
* 1) allocate the requested inode.
|
|
|
|
* 2) allocate the next available inode after the requested
|
|
|
|
* inode in the specified cylinder group.
|
|
|
|
*/
|
|
|
|
static ino_t
|
|
|
|
ffs_nodealloccg(ip, cg, ipref, mode)
|
|
|
|
struct inode *ip;
|
|
|
|
int cg;
|
|
|
|
daddr_t ipref;
|
|
|
|
int mode;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
struct buf *bp;
|
|
|
|
int error, start, len, loc, map, i;
|
|
|
|
|
|
|
|
fs = ip->i_fs;
|
|
|
|
if (fs->fs_cs(fs, cg).cs_nifree == 0)
|
|
|
|
return (NULL);
|
|
|
|
error = bread(ip->i_devvp, fsbtodb(fs, cgtod(fs, cg)),
|
|
|
|
(int)fs->fs_cgsize, NOCRED, &bp);
|
|
|
|
if (error) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
cgp = (struct cg *)bp->b_data;
|
|
|
|
if (!cg_chkmagic(cgp) || cgp->cg_cs.cs_nifree == 0) {
|
|
|
|
brelse(bp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
cgp->cg_time = time.tv_sec;
|
|
|
|
if (ipref) {
|
|
|
|
ipref %= fs->fs_ipg;
|
|
|
|
if (isclr(cg_inosused(cgp), ipref))
|
|
|
|
goto gotit;
|
|
|
|
}
|
|
|
|
start = cgp->cg_irotor / NBBY;
|
|
|
|
len = howmany(fs->fs_ipg - cgp->cg_irotor, NBBY);
|
|
|
|
loc = skpc(0xff, len, &cg_inosused(cgp)[start]);
|
|
|
|
if (loc == 0) {
|
|
|
|
len = start + 1;
|
|
|
|
start = 0;
|
|
|
|
loc = skpc(0xff, len, &cg_inosused(cgp)[0]);
|
|
|
|
if (loc == 0) {
|
|
|
|
printf("cg = %d, irotor = %d, fs = %s\n",
|
|
|
|
cg, cgp->cg_irotor, fs->fs_fsmnt);
|
|
|
|
panic("ffs_nodealloccg: map corrupted");
|
|
|
|
/* NOTREACHED */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
i = start + len - loc;
|
|
|
|
map = cg_inosused(cgp)[i];
|
|
|
|
ipref = i * NBBY;
|
|
|
|
for (i = 1; i < (1 << NBBY); i <<= 1, ipref++) {
|
|
|
|
if ((map & i) == 0) {
|
|
|
|
cgp->cg_irotor = ipref;
|
|
|
|
goto gotit;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
printf("fs = %s\n", fs->fs_fsmnt);
|
|
|
|
panic("ffs_nodealloccg: block not in map");
|
|
|
|
/* NOTREACHED */
|
|
|
|
gotit:
|
|
|
|
setbit(cg_inosused(cgp), ipref);
|
|
|
|
cgp->cg_cs.cs_nifree--;
|
|
|
|
fs->fs_cstotal.cs_nifree--;
|
|
|
|
fs->fs_cs(fs, cg).cs_nifree--;
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
if ((mode & IFMT) == IFDIR) {
|
|
|
|
cgp->cg_cs.cs_ndir++;
|
|
|
|
fs->fs_cstotal.cs_ndir++;
|
|
|
|
fs->fs_cs(fs, cg).cs_ndir++;
|
|
|
|
}
|
|
|
|
bdwrite(bp);
|
|
|
|
return (cg * fs->fs_ipg + ipref);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free a block or fragment.
|
|
|
|
*
|
|
|
|
* The specified block or fragment is placed back in the
|
|
|
|
* free map. If a fragment is deallocated, a possible
|
|
|
|
* block reassembly is checked.
|
|
|
|
*/
|
|
|
|
ffs_blkfree(ip, bno, size)
|
|
|
|
register struct inode *ip;
|
|
|
|
daddr_t bno;
|
|
|
|
long size;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
struct buf *bp;
|
|
|
|
daddr_t blkno;
|
|
|
|
int i, error, cg, blk, frags, bbase;
|
|
|
|
|
|
|
|
fs = ip->i_fs;
|
|
|
|
if ((u_int)size > fs->fs_bsize || fragoff(fs, size) != 0) {
|
|
|
|
printf("dev = 0x%x, bsize = %d, size = %d, fs = %s\n",
|
|
|
|
ip->i_dev, fs->fs_bsize, size, fs->fs_fsmnt);
|
|
|
|
panic("blkfree: bad size");
|
|
|
|
}
|
|
|
|
cg = dtog(fs, bno);
|
|
|
|
if ((u_int)bno >= fs->fs_size) {
|
|
|
|
printf("bad block %d, ino %d\n", bno, ip->i_number);
|
|
|
|
ffs_fserr(fs, ip->i_uid, "bad block");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
error = bread(ip->i_devvp, fsbtodb(fs, cgtod(fs, cg)),
|
|
|
|
(int)fs->fs_cgsize, NOCRED, &bp);
|
|
|
|
if (error) {
|
|
|
|
brelse(bp);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
cgp = (struct cg *)bp->b_data;
|
|
|
|
if (!cg_chkmagic(cgp)) {
|
|
|
|
brelse(bp);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
cgp->cg_time = time.tv_sec;
|
|
|
|
bno = dtogd(fs, bno);
|
|
|
|
if (size == fs->fs_bsize) {
|
|
|
|
blkno = fragstoblks(fs, bno);
|
|
|
|
if (ffs_isblock(fs, cg_blksfree(cgp), blkno)) {
|
|
|
|
printf("dev = 0x%x, block = %d, fs = %s\n",
|
|
|
|
ip->i_dev, bno, fs->fs_fsmnt);
|
|
|
|
panic("blkfree: freeing free block");
|
|
|
|
}
|
|
|
|
ffs_setblock(fs, cg_blksfree(cgp), blkno);
|
|
|
|
ffs_clusteracct(fs, cgp, blkno, 1);
|
|
|
|
cgp->cg_cs.cs_nbfree++;
|
|
|
|
fs->fs_cstotal.cs_nbfree++;
|
|
|
|
fs->fs_cs(fs, cg).cs_nbfree++;
|
|
|
|
i = cbtocylno(fs, bno);
|
|
|
|
cg_blks(fs, cgp, i)[cbtorpos(fs, bno)]++;
|
|
|
|
cg_blktot(cgp)[i]++;
|
|
|
|
} else {
|
|
|
|
bbase = bno - fragnum(fs, bno);
|
|
|
|
/*
|
|
|
|
* decrement the counts associated with the old frags
|
|
|
|
*/
|
|
|
|
blk = blkmap(fs, cg_blksfree(cgp), bbase);
|
|
|
|
ffs_fragacct(fs, blk, cgp->cg_frsum, -1);
|
|
|
|
/*
|
|
|
|
* deallocate the fragment
|
|
|
|
*/
|
|
|
|
frags = numfrags(fs, size);
|
|
|
|
for (i = 0; i < frags; i++) {
|
|
|
|
if (isset(cg_blksfree(cgp), bno + i)) {
|
|
|
|
printf("dev = 0x%x, block = %d, fs = %s\n",
|
|
|
|
ip->i_dev, bno + i, fs->fs_fsmnt);
|
|
|
|
panic("blkfree: freeing free frag");
|
|
|
|
}
|
|
|
|
setbit(cg_blksfree(cgp), bno + i);
|
|
|
|
}
|
|
|
|
cgp->cg_cs.cs_nffree += i;
|
|
|
|
fs->fs_cstotal.cs_nffree += i;
|
|
|
|
fs->fs_cs(fs, cg).cs_nffree += i;
|
|
|
|
/*
|
|
|
|
* add back in counts associated with the new frags
|
|
|
|
*/
|
|
|
|
blk = blkmap(fs, cg_blksfree(cgp), bbase);
|
|
|
|
ffs_fragacct(fs, blk, cgp->cg_frsum, 1);
|
|
|
|
/*
|
|
|
|
* if a complete block has been reassembled, account for it
|
|
|
|
*/
|
|
|
|
blkno = fragstoblks(fs, bbase);
|
|
|
|
if (ffs_isblock(fs, cg_blksfree(cgp), blkno)) {
|
|
|
|
cgp->cg_cs.cs_nffree -= fs->fs_frag;
|
|
|
|
fs->fs_cstotal.cs_nffree -= fs->fs_frag;
|
|
|
|
fs->fs_cs(fs, cg).cs_nffree -= fs->fs_frag;
|
|
|
|
ffs_clusteracct(fs, cgp, blkno, 1);
|
|
|
|
cgp->cg_cs.cs_nbfree++;
|
|
|
|
fs->fs_cstotal.cs_nbfree++;
|
|
|
|
fs->fs_cs(fs, cg).cs_nbfree++;
|
|
|
|
i = cbtocylno(fs, bbase);
|
|
|
|
cg_blks(fs, cgp, i)[cbtorpos(fs, bbase)]++;
|
|
|
|
cg_blktot(cgp)[i]++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
bdwrite(bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free an inode.
|
|
|
|
*
|
|
|
|
* The specified inode is placed back in the free map.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
ffs_vfree(ap)
|
|
|
|
struct vop_vfree_args /* {
|
|
|
|
struct vnode *a_pvp;
|
|
|
|
ino_t a_ino;
|
|
|
|
int a_mode;
|
|
|
|
} */ *ap;
|
|
|
|
{
|
|
|
|
register struct fs *fs;
|
|
|
|
register struct cg *cgp;
|
|
|
|
register struct inode *pip;
|
|
|
|
ino_t ino = ap->a_ino;
|
|
|
|
struct buf *bp;
|
|
|
|
int error, cg;
|
|
|
|
|
|
|
|
pip = VTOI(ap->a_pvp);
|
|
|
|
fs = pip->i_fs;
|
|
|
|
if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg)
|
|
|
|
panic("ifree: range: dev = 0x%x, ino = %d, fs = %s\n",
|
|
|
|
pip->i_dev, ino, fs->fs_fsmnt);
|
|
|
|
cg = ino_to_cg(fs, ino);
|
|
|
|
error = bread(pip->i_devvp, fsbtodb(fs, cgtod(fs, cg)),
|
|
|
|
(int)fs->fs_cgsize, NOCRED, &bp);
|
|
|
|
if (error) {
|
|
|
|
brelse(bp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
cgp = (struct cg *)bp->b_data;
|
|
|
|
if (!cg_chkmagic(cgp)) {
|
|
|
|
brelse(bp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
cgp->cg_time = time.tv_sec;
|
|
|
|
ino %= fs->fs_ipg;
|
|
|
|
if (isclr(cg_inosused(cgp), ino)) {
|
|
|
|
printf("dev = 0x%x, ino = %d, fs = %s\n",
|
|
|
|
pip->i_dev, ino, fs->fs_fsmnt);
|
|
|
|
if (fs->fs_ronly == 0)
|
|
|
|
panic("ifree: freeing free inode");
|
|
|
|
}
|
|
|
|
clrbit(cg_inosused(cgp), ino);
|
|
|
|
if (ino < cgp->cg_irotor)
|
|
|
|
cgp->cg_irotor = ino;
|
|
|
|
cgp->cg_cs.cs_nifree++;
|
|
|
|
fs->fs_cstotal.cs_nifree++;
|
|
|
|
fs->fs_cs(fs, cg).cs_nifree++;
|
|
|
|
if ((ap->a_mode & IFMT) == IFDIR) {
|
|
|
|
cgp->cg_cs.cs_ndir--;
|
|
|
|
fs->fs_cstotal.cs_ndir--;
|
|
|
|
fs->fs_cs(fs, cg).cs_ndir--;
|
|
|
|
}
|
|
|
|
fs->fs_fmod = 1;
|
|
|
|
bdwrite(bp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
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/*
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* Find a block of the specified size in the specified cylinder group.
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*
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* It is a panic if a request is made to find a block if none are
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* available.
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*/
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static daddr_t
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ffs_mapsearch(fs, cgp, bpref, allocsiz)
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register struct fs *fs;
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register struct cg *cgp;
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daddr_t bpref;
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int allocsiz;
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{
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daddr_t bno;
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int start, len, loc, i;
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int blk, field, subfield, pos;
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/*
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* find the fragment by searching through the free block
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* map for an appropriate bit pattern
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*/
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if (bpref)
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start = dtogd(fs, bpref) / NBBY;
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else
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start = cgp->cg_frotor / NBBY;
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len = howmany(fs->fs_fpg, NBBY) - start;
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loc = scanc((u_int)len, (u_char *)&cg_blksfree(cgp)[start],
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(u_char *)fragtbl[fs->fs_frag],
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(u_char)(1 << (allocsiz - 1 + (fs->fs_frag % NBBY))));
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if (loc == 0) {
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len = start + 1;
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start = 0;
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loc = scanc((u_int)len, (u_char *)&cg_blksfree(cgp)[0],
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(u_char *)fragtbl[fs->fs_frag],
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(u_char)(1 << (allocsiz - 1 + (fs->fs_frag % NBBY))));
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if (loc == 0) {
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printf("start = %d, len = %d, fs = %s\n",
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start, len, fs->fs_fsmnt);
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panic("ffs_alloccg: map corrupted");
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/* NOTREACHED */
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}
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}
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bno = (start + len - loc) * NBBY;
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cgp->cg_frotor = bno;
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/*
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* found the byte in the map
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* sift through the bits to find the selected frag
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*/
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for (i = bno + NBBY; bno < i; bno += fs->fs_frag) {
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blk = blkmap(fs, cg_blksfree(cgp), bno);
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blk <<= 1;
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field = around[allocsiz];
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subfield = inside[allocsiz];
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for (pos = 0; pos <= fs->fs_frag - allocsiz; pos++) {
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if ((blk & field) == subfield)
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return (bno + pos);
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field <<= 1;
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subfield <<= 1;
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}
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}
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printf("bno = %d, fs = %s\n", bno, fs->fs_fsmnt);
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panic("ffs_alloccg: block not in map");
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return (-1);
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}
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/*
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* Update the cluster map because of an allocation or free.
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*
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* Cnt == 1 means free; cnt == -1 means allocating.
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*/
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ffs_clusteracct(fs, cgp, blkno, cnt)
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struct fs *fs;
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struct cg *cgp;
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daddr_t blkno;
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int cnt;
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{
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1994-10-20 07:20:55 +03:00
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int32_t *sump;
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1994-12-14 16:03:35 +03:00
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int32_t *lp;
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1994-06-08 15:41:58 +04:00
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u_char *freemapp, *mapp;
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int i, start, end, forw, back, map, bit;
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if (fs->fs_contigsumsize <= 0)
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return;
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freemapp = cg_clustersfree(cgp);
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sump = cg_clustersum(cgp);
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/*
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* Allocate or clear the actual block.
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*/
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if (cnt > 0)
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setbit(freemapp, blkno);
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else
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clrbit(freemapp, blkno);
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/*
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* Find the size of the cluster going forward.
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*/
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start = blkno + 1;
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end = start + fs->fs_contigsumsize;
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if (end >= cgp->cg_nclusterblks)
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end = cgp->cg_nclusterblks;
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mapp = &freemapp[start / NBBY];
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map = *mapp++;
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bit = 1 << (start % NBBY);
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for (i = start; i < end; i++) {
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if ((map & bit) == 0)
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break;
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if ((i & (NBBY - 1)) != (NBBY - 1)) {
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bit <<= 1;
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} else {
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map = *mapp++;
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bit = 1;
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}
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}
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forw = i - start;
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/*
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* Find the size of the cluster going backward.
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*/
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start = blkno - 1;
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end = start - fs->fs_contigsumsize;
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if (end < 0)
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end = -1;
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mapp = &freemapp[start / NBBY];
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map = *mapp--;
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bit = 1 << (start % NBBY);
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for (i = start; i > end; i--) {
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if ((map & bit) == 0)
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break;
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if ((i & (NBBY - 1)) != 0) {
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bit >>= 1;
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} else {
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map = *mapp--;
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bit = 1 << (NBBY - 1);
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}
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}
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|
back = start - i;
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|
|
/*
|
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|
|
* Account for old cluster and the possibly new forward and
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|
* back clusters.
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|
*/
|
|
|
|
i = back + forw + 1;
|
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|
|
if (i > fs->fs_contigsumsize)
|
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|
|
i = fs->fs_contigsumsize;
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|
|
sump[i] += cnt;
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|
|
if (back > 0)
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|
|
sump[back] -= cnt;
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|
|
if (forw > 0)
|
|
|
|
sump[forw] -= cnt;
|
1994-12-14 16:03:35 +03:00
|
|
|
/*
|
|
|
|
* Update cluster summary information.
|
|
|
|
*/
|
|
|
|
lp = &sump[fs->fs_contigsumsize];
|
|
|
|
for (i = fs->fs_contigsumsize; i > 0; i--)
|
|
|
|
if (*lp-- > 0)
|
|
|
|
break;
|
|
|
|
fs->fs_maxcluster[cgp->cg_cgx] = i;
|
1994-06-08 15:41:58 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fserr prints the name of a file system with an error diagnostic.
|
|
|
|
*
|
|
|
|
* The form of the error message is:
|
|
|
|
* fs: error message
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
ffs_fserr(fs, uid, cp)
|
|
|
|
struct fs *fs;
|
|
|
|
u_int uid;
|
|
|
|
char *cp;
|
|
|
|
{
|
|
|
|
|
|
|
|
log(LOG_ERR, "uid %d on %s: %s\n", uid, fs->fs_fsmnt, cp);
|
|
|
|
}
|