xref: /freebsd/lib/libufs/inode.c (revision 5e53a4f90f82c4345f277dd87cc9292f26e04a29)
1*5e53a4f9SPedro F. Giffuni /*-
2*5e53a4f9SPedro F. Giffuni  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3*5e53a4f9SPedro F. Giffuni  *
420938dbfSJuli Mallett  * Copyright (c) 2002 Juli Mallett.  All rights reserved.
520938dbfSJuli Mallett  *
620938dbfSJuli Mallett  * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
720938dbfSJuli Mallett  * FreeBSD project.  Redistribution and use in source and binary forms, with
820938dbfSJuli Mallett  * or without modification, are permitted provided that the following
920938dbfSJuli Mallett  * conditions are met:
1020938dbfSJuli Mallett  *
1120938dbfSJuli Mallett  * 1. Redistribution of source code must retain the above copyright notice,
1220938dbfSJuli Mallett  *    this list of conditions and the following disclaimer.
1320938dbfSJuli Mallett  * 2. Redistribution in binary form must reproduce the above copyright
1420938dbfSJuli Mallett  *    notice, this list of conditions and the following disclaimer in the
1520938dbfSJuli Mallett  *    documentation and/or other materials provided with the distribution.
1620938dbfSJuli Mallett  *
1720938dbfSJuli Mallett  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1820938dbfSJuli Mallett  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1920938dbfSJuli Mallett  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2020938dbfSJuli Mallett  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
2120938dbfSJuli Mallett  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2220938dbfSJuli Mallett  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2320938dbfSJuli Mallett  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2420938dbfSJuli Mallett  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2520938dbfSJuli Mallett  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
2620938dbfSJuli Mallett  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2720938dbfSJuli Mallett  * POSSIBILITY OF SUCH DAMAGE.
2820938dbfSJuli Mallett  */
2920938dbfSJuli Mallett 
3020938dbfSJuli Mallett #include <sys/cdefs.h>
3120938dbfSJuli Mallett __FBSDID("$FreeBSD$");
3220938dbfSJuli Mallett 
3320938dbfSJuli Mallett #include <sys/param.h>
3420938dbfSJuli Mallett #include <sys/mount.h>
3520938dbfSJuli Mallett #include <sys/disklabel.h>
3620938dbfSJuli Mallett #include <sys/stat.h>
3720938dbfSJuli Mallett 
3820938dbfSJuli Mallett #include <ufs/ufs/ufsmount.h>
3920938dbfSJuli Mallett #include <ufs/ufs/dinode.h>
4020938dbfSJuli Mallett #include <ufs/ffs/fs.h>
4120938dbfSJuli Mallett 
4220938dbfSJuli Mallett #include <errno.h>
4320938dbfSJuli Mallett #include <fcntl.h>
4420938dbfSJuli Mallett #include <stdio.h>
4520938dbfSJuli Mallett #include <stdlib.h>
4620938dbfSJuli Mallett #include <string.h>
4720938dbfSJuli Mallett #include <unistd.h>
4820938dbfSJuli Mallett 
4920938dbfSJuli Mallett #include <libufs.h>
5020938dbfSJuli Mallett 
5120938dbfSJuli Mallett int
5220938dbfSJuli Mallett getino(struct uufsd *disk, void **dino, ino_t inode, int *mode)
5320938dbfSJuli Mallett {
5420938dbfSJuli Mallett 	ino_t min, max;
5520938dbfSJuli Mallett 	caddr_t inoblock;
5620938dbfSJuli Mallett 	struct ufs1_dinode *dp1;
5720938dbfSJuli Mallett 	struct ufs2_dinode *dp2;
5820938dbfSJuli Mallett 	struct fs *fs;
5920938dbfSJuli Mallett 
6049b2a686SJuli Mallett 	ERROR(disk, NULL);
6120938dbfSJuli Mallett 
6220938dbfSJuli Mallett 	fs = &disk->d_fs;
6320938dbfSJuli Mallett 	inoblock = disk->d_inoblock;
6420938dbfSJuli Mallett 	min = disk->d_inomin;
6520938dbfSJuli Mallett 	max = disk->d_inomax;
6620938dbfSJuli Mallett 
6720938dbfSJuli Mallett 	if (inoblock == NULL) {
6820938dbfSJuli Mallett 		inoblock = malloc(fs->fs_bsize);
6920938dbfSJuli Mallett 		if (inoblock == NULL) {
7049b2a686SJuli Mallett 			ERROR(disk, "unable to allocate inode block");
711081253fSJuli Mallett 			return (-1);
7220938dbfSJuli Mallett 		}
7320938dbfSJuli Mallett 		disk->d_inoblock = inoblock;
7420938dbfSJuli Mallett 	}
7520938dbfSJuli Mallett 	if (inode >= min && inode < max)
7620938dbfSJuli Mallett 		goto gotit;
7720938dbfSJuli Mallett 	bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock,
7820938dbfSJuli Mallett 	    fs->fs_bsize);
79913111f1SMatthew N. Dodd 	disk->d_inomin = min = inode - (inode % INOPB(fs));
80cf6c0643SJuli Mallett 	disk->d_inomax = max = min + INOPB(fs);
8120938dbfSJuli Mallett gotit:	switch (disk->d_ufs) {
8220938dbfSJuli Mallett 	case 1:
8320938dbfSJuli Mallett 		dp1 = &((struct ufs1_dinode *)inoblock)[inode - min];
8420938dbfSJuli Mallett 		*mode = dp1->di_mode & IFMT;
8520938dbfSJuli Mallett 		*dino = dp1;
861081253fSJuli Mallett 		return (0);
8720938dbfSJuli Mallett 	case 2:
8820938dbfSJuli Mallett 		dp2 = &((struct ufs2_dinode *)inoblock)[inode - min];
8920938dbfSJuli Mallett 		*mode = dp2->di_mode & IFMT;
9020938dbfSJuli Mallett 		*dino = dp2;
911081253fSJuli Mallett 		return (0);
9220938dbfSJuli Mallett 	default:
9320938dbfSJuli Mallett 		break;
9420938dbfSJuli Mallett 	}
9549b2a686SJuli Mallett 	ERROR(disk, "unknown UFS filesystem type");
961081253fSJuli Mallett 	return (-1);
9720938dbfSJuli Mallett }
98113db2ddSJeff Roberson 
99113db2ddSJeff Roberson int
100113db2ddSJeff Roberson putino(struct uufsd *disk)
101113db2ddSJeff Roberson {
102113db2ddSJeff Roberson 	struct fs *fs;
103113db2ddSJeff Roberson 
104113db2ddSJeff Roberson 	fs = &disk->d_fs;
105113db2ddSJeff Roberson 	if (disk->d_inoblock == NULL) {
106113db2ddSJeff Roberson 		ERROR(disk, "No inode block allocated");
107113db2ddSJeff Roberson 		return (-1);
108113db2ddSJeff Roberson 	}
109113db2ddSJeff Roberson 	if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)),
110113db2ddSJeff Roberson 	    disk->d_inoblock, disk->d_fs.fs_bsize) <= 0)
111113db2ddSJeff Roberson 		return (-1);
112113db2ddSJeff Roberson 	return (0);
113113db2ddSJeff Roberson }
114