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Merge nfsd's cut&paste copy of namei with the master one.

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This commit is contained in:
dholland 2011-04-11 01:35:55 +00:00
parent 8d22bcb871
commit 7f3a76e260
1 changed files with 11 additions and 62 deletions
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73
sys/kern/vfs_lookup.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_lookup.c,v 1.134 2011/04/11 01:35:00 dholland Exp $ */ /* $NetBSD: vfs_lookup.c,v 1.135 2011/04/11 01:35:55 dholland Exp $ */
/* /*
* Copyright (c) 1982, 1986, 1989, 1993 * Copyright (c) 1982, 1986, 1989, 1993
@ -37,7 +37,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_lookup.c,v 1.134 2011/04/11 01:35:00 dholland Exp $"); __KERNEL_RCSID(0, "$NetBSD: vfs_lookup.c,v 1.135 2011/04/11 01:35:55 dholland Exp $");
#include "opt_magiclinks.h" #include "opt_magiclinks.h"
@ -1372,72 +1372,21 @@ namei(struct nameidata *ndp)
* called from a different place in a different context. For now I * called from a different place in a different context. For now I
* want to be able to shuffle code in from one call site without * want to be able to shuffle code in from one call site without
* affecting the other. * affecting the other.
*
* It turns out that the "main" version was a cut and pasted copy of
* namei with a few changes; the "index" version on the other hand
* always takes a single component and is an elaborate form of calling
* VOP_LOOKUP once.
*/ */
static int
do_lookup_for_nfsd(struct namei_state *state, struct vnode *forcecwd,
int neverfollow, int inhibitmagic)
{
int error;
struct nameidata *ndp = state->ndp;
//struct componentname *cnp = state->cnp;
error = namei_start(state, forcecwd);
if (error) {
return error;
}
for (;;) {
error = do_lookup(state, state->namei_startdir);
if (error) {
if (ndp->ni_dvp) {
vput(ndp->ni_dvp);
}
return error;
}
/*
* Check for encountering a symbolic link
*/
if (namei_atsymlink(state)) {
if (neverfollow) {
error = EINVAL;
} else {
error = namei_follow(state, inhibitmagic);
}
if (error) {
KASSERT(ndp->ni_dvp != ndp->ni_vp);
vput(state->ndp->ni_vp);
vput(state->ndp->ni_dvp);
state->ndp->ni_vp = NULL;
return error;
}
} else {
break;
}
}
if ((state->cnp->cn_flags & LOCKPARENT) == 0 && state->ndp->ni_dvp) {
if (state->ndp->ni_dvp == state->ndp->ni_vp) {
vrele(state->ndp->ni_dvp);
} else {
vput(state->ndp->ni_dvp);
}
}
return (0);
}
int int
lookup_for_nfsd(struct nameidata *ndp, struct vnode *dp, int neverfollow) lookup_for_nfsd(struct nameidata *ndp, struct vnode *forcecwd, int neverfollow)
{ {
struct namei_state state; struct namei_state state;
int error; int error;
namei_init(&state, ndp); namei_init(&state, ndp);
error = do_lookup_for_nfsd(&state, dp, neverfollow, 1/*inhibitmagic*/); error = do_namei(&state, forcecwd, neverfollow, 1/*inhibitmagic*/);
namei_cleanup(&state); namei_cleanup(&state);
return error; return error;
@ -1450,8 +1399,8 @@ lookup_for_nfsd_index(struct nameidata *ndp, struct vnode *startdir)
int error; int error;
/* /*
* Note: the name sent in here is not/should not be allowed to * Note: the name sent in here (is not|should not be) allowed
* contain a slash. * to contain a slash.
*/ */
ndp->ni_pathlen = strlen(ndp->ni_pathbuf->pb_path) + 1; ndp->ni_pathlen = strlen(ndp->ni_pathbuf->pb_path) + 1;