[src/trunk]: src/sbin/clri Calculate sector size from superblock and use that...

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e0d812fc8ee7
branches:  trunk
changeset: 810424:e0d812fc8ee7
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Sun Aug 30 05:23:17 2015 +0000

description:
Calculate sector size from superblock and use that instead of DEV_BSIZE.

diffstat:

 sbin/clri/clri.c |  10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diffs (45 lines):

diff -r 2f6c0193426e -r e0d812fc8ee7 sbin/clri/clri.c
--- a/sbin/clri/clri.c  Sun Aug 30 05:12:00 2015 +0000
+++ b/sbin/clri/clri.c  Sun Aug 30 05:23:17 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: clri.c,v 1.23 2013/06/23 02:06:04 dholland Exp $       */
+/*     $NetBSD: clri.c,v 1.24 2015/08/30 05:23:17 mlelstv Exp $        */
 
 /*
  * Copyright (c) 1990, 1993
@@ -42,7 +42,7 @@
 #if 0
 static char sccsid[] = "@(#)clri.c     8.3 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: clri.c,v 1.23 2013/06/23 02:06:04 dholland Exp $");
+__RCSID("$NetBSD: clri.c,v 1.24 2015/08/30 05:23:17 mlelstv Exp $");
 #endif
 #endif /* not lint */
 
@@ -84,6 +84,7 @@
        char *fs, sblock[SBLOCKSIZE];
        int needswap = 0, is_ufs2 = 0;
        int i, imax;
+       long dev_bsize;
 
        if (argc < 3) {
                (void)fprintf(stderr, "usage: clri filesystem inode ...\n");
@@ -151,6 +152,9 @@
        if (needswap)
                ffs_sb_swap(sbp, sbp);
 
+       /* compute disk block size from superblock parameters */
+       dev_bsize = sbp->fs_fsize / FFS_FSBTODB(sbp, 1);
+
        bsize = sbp->fs_bsize;
        ibuf = malloc(bsize);
        if (ibuf == NULL) {
@@ -166,7 +170,7 @@
                /* read in the appropriate block. */
                offset = ino_to_fsba(sbp, inonum);      /* inode to fs blk */
                offset = FFS_FSBTODB(sbp, offset);      /* fs blk disk blk */
-               offset *= DEV_BSIZE;                    /* disk blk to bytes */
+               offset *= dev_bsize;                    /* disk blk to bytes */
 
                /* seek and read the block */
                if (lseek(fd, offset, SEEK_SET) < 0)