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In the function ufs_readlink(), check read permission before 

reading link.
This commit is contained in:
enami 1997-10-03 16:45:49 +00:00
parent 1611699624
commit 164890a9fc
1 changed files with 6 additions and 2 deletions
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8
sys/ufs/ufs/ufs_vnops.c
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@ -1,4 +1,4 @@
/* $NetBSD: ufs_vnops.c,v 1.28 1997/06/30 20:16:31 fvdl Exp $ */ /* $NetBSD: ufs_vnops.c,v 1.29 1997/10/03 16:45:49 enami Exp $ */
/* /*
* Copyright (c) 1982, 1986, 1989, 1993 * Copyright (c) 1982, 1986, 1989, 1993
@ -1495,7 +1495,11 @@ ufs_readlink(v)
} */ *ap = v; } */ *ap = v;
register struct vnode *vp = ap->a_vp; register struct vnode *vp = ap->a_vp;
register struct inode *ip = VTOI(vp); register struct inode *ip = VTOI(vp);
int isize; int isize, error;
error = VOP_ACCESS(vp, VREAD, ap->a_cred, ap->a_uio->uio_procp);
if (error != 0)
return (error);
isize = ip->i_ffs_size; isize = ip->i_ffs_size;
if (isize < vp->v_mount->mnt_maxsymlinklen || if (isize < vp->v_mount->mnt_maxsymlinklen ||