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memset ump->um_e2fs to 0 after malloc, it is bigger than SBSIZE and thus some

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parts were left uninitialised. The symptom was that a read-only mount tried
to rewrite back the superblock.
This commit is contained in:
bouyer 1999-06-01 13:18:49 +00:00
parent eb947d2f5e
commit 466d1747ff
1 changed files with 2 additions and 1 deletions
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3
sys/ufs/ext2fs/ext2fs_vfsops.c
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@ -1,4 +1,4 @@
/* $NetBSD: ext2fs_vfsops.c,v 1.24 1999/02/26 23:44:49 wrstuden Exp $ */
/* $NetBSD: ext2fs_vfsops.c,v 1.25 1999/06/01 13:18:49 bouyer Exp $ */
/*
* Copyright (c) 1997 Manuel Bouyer.
@ -545,6 +545,7 @@ ext2fs_mountfs(devvp, mp, p)
ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK);
memset((caddr_t)ump, 0, sizeof *ump);
ump->um_e2fs = malloc(sizeof(struct m_ext2fs), M_UFSMNT, M_WAITOK);
memset((caddr_t)ump->um_e2fs, 0, sizeof(struct m_ext2fs));
e2fs_sbload((struct ext2fs*)bp->b_data, &ump->um_e2fs->e2fs);
brelse(bp);
bp = NULL;