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Address PR bin/7623: if the filesystem is so small (or segment size so large) 

that not enough segments are available for the second superblock, or to have
MIN_FREE_SEGS free for work room for the cleaner, newfs_lfs will now exit
with an error.
This commit is contained in:
perseant 1999-07-22 20:14:29 +00:00
parent 805851f4c7
commit eda6e4cca4
1 changed files with 11 additions and 2 deletions
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13
sbin/newfs_lfs/lfs.c
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@ -1,4 +1,4 @@
/* $NetBSD: lfs.c,v 1.4 1999/06/24 16:45:14 perseant Exp $ */
/* $NetBSD: lfs.c,v 1.5 1999/07/22 20:14:29 perseant Exp $ */
/*-
* Copyright (c) 1991, 1993
@ -38,7 +38,7 @@
#if 0
static char sccsid[] = "@(#)lfs.c 8.5 (Berkeley) 5/24/95";
#else
__RCSID("$NetBSD: lfs.c,v 1.4 1999/06/24 16:45:14 perseant Exp $");
__RCSID("$NetBSD: lfs.c,v 1.5 1999/07/22 20:14:29 perseant Exp $");
#endif
#endif /* not lint */
@ -290,6 +290,9 @@ make_lfs(fd, lp, partp, minfree, block_size, frag_size, seg_size)
lfsp->lfs_nclean = lfsp->lfs_nseg = lfsp->lfs_dsize / lfsp->lfs_ssize;
lfsp->lfs_maxfilesize = maxtable[lfsp->lfs_bshift] << lfsp->lfs_bshift;
if(lfsp->lfs_nseg < MIN_FREE_SEGS + 1)
fatal("Could not allocate %d segments; please decrease the segment size\n", MIN_FREE_SEGS+1);
/*
* The number of free blocks is set from the number of segments times
* the segment size - MIN_FREE_SEGS (that we never write because we need to make
@ -324,6 +327,12 @@ make_lfs(fd, lp, partp, minfree, block_size, frag_size, seg_size)
break;
lfsp->lfs_sboffs[i] = sb_addr;
}
/* We need >= 2 superblocks */
if(lfsp->lfs_sboffs[1] == 0x0) {
fatal("Could not assign a disk adress for the second superblock.\nPlease decrease the segment size.\n");
}
last_sb_addr = lfsp->lfs_sboffs[i - 1];
lfsp->lfs_lastseg = lfsp->lfs_sboffs[0];
lfsp->lfs_nextseg =