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Fix lossage noticed by jmmv (mostly for -t 0 mounts) and make sure 

a node always has the inode number set.  And since I'm feeling
generous, sprinkle a few comments around the affected areas (mostly
so that I'd remember what in the world the code is trying to do).
This commit is contained in:
pooka 2007-12-12 16:04:35 +00:00
parent eb3500dc11
commit 00b48f3e40
1 changed files with 35 additions and 4 deletions
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39
usr.sbin/puffs/mount_psshfs/subr.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: subr.c,v 1.41 2007/12/07 14:59:22 pooka Exp $ */
/* $NetBSD: subr.c,v 1.42 2007/12/12 16:04:35 pooka Exp $ */
/*
* Copyright (c) 2006 Antti Kantee. All Rights Reserved.
@ -27,7 +27,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: subr.c,v 1.41 2007/12/07 14:59:22 pooka Exp $");
__RCSID("$NetBSD: subr.c,v 1.42 2007/12/12 16:04:35 pooka Exp $");
#endif /* !lint */
#include <assert.h>
@ -336,14 +336,45 @@ sftp_readdir(struct puffs_usermount *pu, struct psshfs_ctx *pctx,
free(longname);
longname = NULL;
/*
* Check if we already have a psshfs_dir for the
* name we are processing. If so, use the old one.
* If not, create a new one
*/
testd = lookup(olddir, nent, psn->dir[idx].entryname);
if (testd) {
psn->dir[idx].entry = testd->entry;
if (testd->entry)
/*
* Has entry. Update attributes to what
* we just got from the server.
*/
if (testd->entry) {
setpnva(pu, testd->entry,
&psn->dir[idx].va);
else
/*
* No entry. This can happen in two cases:
* 1) the file was created "behind our back"
* on the server
* 2) we do two readdirs before we instantiate
* the node (or run with -t 0).
*
* Cache attributes from the server in
* case we want to instantiate this node
* soon. Also give it a new inode number
* (the node has not been instantiated
* yet so this doesn't matter).
*
* XXX: theoretically we can make the inode
* space wrap because of this.
*/
} else {
testd->va = psn->dir[idx].va;
psn->dir[idx].va.va_fileid
= pctx->nextino++;
}
/* No previous entry? Initialize this one. */
} else {
psn->dir[idx].entry = NULL;
psn->dir[idx].va.va_fileid = pctx->nextino++;