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Apply patch from PR#5542: buffer overflow in lfs_markv().

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This commit is contained in:
pk 1998-09-15 10:53:22 +00:00
parent f1c16a1b25
commit 3059ae05ba
1 changed files with 10 additions and 1 deletions
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11
sys/ufs/lfs/lfs_syscalls.c
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@ -1,4 +1,4 @@
/* $NetBSD: lfs_syscalls.c,v 1.18 1998/06/24 20:58:48 sommerfe Exp $ */ /* $NetBSD: lfs_syscalls.c,v 1.19 1998/09/15 10:53:22 pk Exp $ */
/*- /*-
* Copyright (c) 1991, 1993, 1994 * Copyright (c) 1991, 1993, 1994
@ -193,6 +193,15 @@ lfs_markv(p, v, retval)
v_daddr = LFS_UNUSED_DADDR; v_daddr = LFS_UNUSED_DADDR;
continue; continue;
} }
if(((SEGSUM *)(sp->segsum))->ss_nfinfo == 0) {
sp->sum_bytes_left -=
sizeof(FINFO) - sizeof(ufs_daddr_t);
INC_FINFO(sp);
sp->start_lbp = &sp->fip->fi_blocks[0];
sp->fip->fi_version = blkp->bi_version;
sp->fip->fi_nblocks = 0;
sp->fip->fi_ino = blkp->bi_inode;
}
sp->vp = vp; sp->vp = vp;
ip = VTOI(vp); ip = VTOI(vp);
} else if (v_daddr == LFS_UNUSED_DADDR) } else if (v_daddr == LFS_UNUSED_DADDR)