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Fix several bugs in devfs_lookupx(). When we check the nameiop to

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make sure it's a correct operation for devfs, do it only in the
ISLASTCN case.  If we don't, we are assuming that the final file will
be in devfs, which is not true if another partition is mounted on top
of devfs or with special filenames (like /dev/net/../../foo).

Reviewed by:	phk
This commit is contained in:
Maxime Henrion 2002-05-10 15:41:14 +00:00
parent 2c6c9ea2bd
commit 8eee3a3d58
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=96356
1 changed files with 3 additions and 3 deletions
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6
sys/fs/devfs/devfs_vnops.c
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@ -276,7 +276,7 @@ devfs_lookupx(ap)
*vpp = NULLVP;
if (nameiop == RENAME)
if ((flags & ISLASTCN) && nameiop == RENAME)
return (EOPNOTSUPP);
if (dvp->v_type != VDIR)
@ -290,7 +290,7 @@ devfs_lookupx(ap)
return (error);
if (cnp->cn_namelen == 1 && *pname == '.') {
if (nameiop != LOOKUP)
if ((flags & ISLASTCN) && nameiop != LOOKUP)
return (EINVAL);
*vpp = dvp;
VREF(dvp);
@ -298,7 +298,7 @@ devfs_lookupx(ap)
}
if (flags & ISDOTDOT) {
if (nameiop != LOOKUP)
if ((flags & ISLASTCN) && nameiop != LOOKUP)
return (EINVAL);
VOP_UNLOCK(dvp, 0, td);
de = TAILQ_FIRST(&dd->de_dlist); /* "." */