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Fsck needs to check each CG's rotor values to ensure thay are not -ve.

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It seems a common corruption to have them -ve (I've seen it several times)
and if fsck doesn't fix it, it leads to a kernel pagefault.

Reviewd by: kirk
Submitted by: Eric Jacobs <eaja@erols.com> and me independently.
MFC in: 2 days
PR: bin/40967
Approved by: re
This commit is contained in:
Julian Elischer
2002-11-24 21:41:42 +00:00
parent 560d1fbc99
commit bbed4456c1
1 changed files with 3 additions and 3 deletions
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sbin/fsck_ffs/pass5.c
+3 -3
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@@ -184,15 +184,15 @@ pass5(void)
newcg->cg_cs.cs_nffree = 0;
newcg->cg_cs.cs_nbfree = 0;
newcg->cg_cs.cs_nifree = fs->fs_ipg;
if (cg->cg_rotor < newcg->cg_ndblk)
if ((cg->cg_rotor >= 0) && (cg->cg_rotor < newcg->cg_ndblk))
newcg->cg_rotor = cg->cg_rotor;
else
newcg->cg_rotor = 0;
if (cg->cg_frotor < newcg->cg_ndblk)
if ((cg->cg_frotor >= 0) && (cg->cg_frotor < newcg->cg_ndblk))
newcg->cg_frotor = cg->cg_frotor;
else
newcg->cg_frotor = 0;
if (cg->cg_irotor < fs->fs_ipg)
if ((cg->cg_irotor >= 0) && (cg->cg_irotor < fs->fs_ipg))
newcg->cg_irotor = cg->cg_irotor;
else
newcg->cg_irotor = 0;