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[src/trunk]: src Factor out the lookup results from struct denode.
details: https://anonhg.NetBSD.org/src/rev/de22a13fc7c0
branches: trunk
changeset: 989996:de22a13fc7c0
user: hannken <hannken%NetBSD.org@localhost>
date: Sat Oct 23 07:38:33 2021 +0000
description:
Factor out the lookup results from struct denode.
No functional change.
diffstat:
sys/fs/msdosfs/denode.h | 18 +++++++++---
sys/fs/msdosfs/msdosfs_lookup.c | 46 +++++++++++++++++++---------------
sys/fs/msdosfs/msdosfs_vnops.c | 35 +++++++++++++------------
usr.sbin/makefs/msdos/msdosfs_vnops.c | 20 +++++++-------
4 files changed, 66 insertions(+), 53 deletions(-)
diffs (truncated from 413 to 300 lines):
diff -r 75f300c60d10 -r de22a13fc7c0 sys/fs/msdosfs/denode.h
--- a/sys/fs/msdosfs/denode.h Sat Oct 23 06:49:46 2021 +0000
+++ b/sys/fs/msdosfs/denode.h Sat Oct 23 07:38:33 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: denode.h,v 1.26 2021/07/18 23:57:14 dholland Exp $ */
+/* $NetBSD: denode.h,v 1.27 2021/10/23 07:38:33 hannken Exp $ */
/*-
* Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
@@ -147,7 +147,14 @@
(dep)->de_fc[FC_NEXTTOLASTFC].fc_frcn = (dep)->de_fc[FC_LASTFC].fc_frcn; \
(dep)->de_fc[FC_NEXTTOLASTFC].fc_fsrcn = (dep)->de_fc[FC_LASTFC].fc_fsrcn; \
} while (0)
-
+
+/*
+ * Auxiliary results from an msdosfs_lookup operation
+ */
+struct msdosfs_lookup_results {
+ u_long mlr_fndoffset; /* offset of found dir entry */
+ int mlr_fndcnt; /* number of slots before de_fndoffset */
+};
/*
* This is the in memory variant of a dos directory entry. It is usually
@@ -168,8 +175,7 @@
#define de_dirclust de_key.dk_dirclust
#define de_diroffset de_key.dk_diroffset
#define de_dirgen de_key.dk_dirgen
- u_long de_fndoffset; /* offset of found dir entry */
- int de_fndcnt; /* number of slots before de_fndoffset */
+ struct msdosfs_lookup_results de_crap; /* results from lookup */
long de_refcnt; /* reference count */
struct msdosfsmount *de_pmp; /* addr of our mount struct */
struct lockf *de_lockf; /* byte level lock list */
@@ -302,6 +308,7 @@
int msdosfs_update(struct vnode *, const struct timespec *,
const struct timespec *, int);
int createde(struct denode *, struct denode *,
+ const struct msdosfs_lookup_results *,
struct denode **, struct componentname *);
int deextend(struct denode *, u_long, struct kauth_cred *);
#ifdef MAKEFS
@@ -316,7 +323,8 @@
int readde(struct denode *, struct buf **, struct direntry **);
int readep(struct msdosfsmount *, u_long, u_long,
struct buf **, struct direntry **);
-int removede(struct denode *, struct denode *);
+int removede(struct denode *, struct denode *,
+ const struct msdosfs_lookup_results *);
int uniqdosname(struct denode *, struct componentname *, u_char *);
int findwin95(struct denode *);
int msdosfs_gop_alloc(struct vnode *, off_t, off_t, int, struct kauth_cred *);
diff -r 75f300c60d10 -r de22a13fc7c0 sys/fs/msdosfs/msdosfs_lookup.c
--- a/sys/fs/msdosfs/msdosfs_lookup.c Sat Oct 23 06:49:46 2021 +0000
+++ b/sys/fs/msdosfs/msdosfs_lookup.c Sat Oct 23 07:38:33 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: msdosfs_lookup.c,v 1.37 2021/07/24 21:31:38 andvar Exp $ */
+/* $NetBSD: msdosfs_lookup.c,v 1.38 2021/10/23 07:38:33 hannken Exp $ */
/*-
* Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
@@ -52,7 +52,7 @@
#endif
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: msdosfs_lookup.c,v 1.37 2021/07/24 21:31:38 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: msdosfs_lookup.c,v 1.38 2021/10/23 07:38:33 hannken Exp $");
#include <sys/param.h>
@@ -320,21 +320,21 @@
* entry came from for whoever did
* this lookup.
*/
- dp->de_fndoffset = diroff;
+ dp->de_crap.mlr_fndoffset = diroff;
if (chksum_ok && nameiop == RENAME) {
/*
* Target had correct long name
* directory entries, reuse them
* as needed.
*/
- dp->de_fndcnt = wincnt - 1;
+ dp->de_crap.mlr_fndcnt = wincnt - 1;
} else {
/*
* Long name directory entries
* not present or corrupt, can only
* reuse dos directory entry.
*/
- dp->de_fndcnt = 0;
+ dp->de_crap.mlr_fndcnt = 0;
}
goto found;
@@ -389,8 +389,8 @@
* Return an indication of where the new directory
* entry should be put.
*/
- dp->de_fndoffset = slotoffset;
- dp->de_fndcnt = wincnt - 1;
+ dp->de_crap.mlr_fndoffset = slotoffset;
+ dp->de_crap.mlr_fndcnt = wincnt - 1;
/*
* We return with the directory locked, so that
@@ -552,7 +552,9 @@
* cnp - componentname needed for Win95 long filenames
*/
int
-createde(struct denode *dep, struct denode *ddep, struct denode **depp, struct componentname *cnp)
+createde(struct denode *dep, struct denode *ddep,
+ const struct msdosfs_lookup_results *mlr,
+ struct denode **depp, struct componentname *cnp)
{
int error, rberror;
u_long dirclust, clusoffset;
@@ -581,9 +583,9 @@
* to extend the root directory. We just return an error in that
* case.
*/
- if (ddep->de_fndoffset >= ddep->de_FileSize) {
- u_long needlen = ddep->de_fndoffset + sizeof(struct direntry)
- - ddep->de_FileSize;
+ if (mlr->mlr_fndoffset >= ddep->de_FileSize) {
+ u_long needlen = ddep->de_crap.mlr_fndoffset
+ + sizeof(struct direntry) - ddep->de_FileSize;
dirclust = de_clcount(pmp, needlen);
if ((error = extendfile(ddep, dirclust, 0, 0, DE_CLEAR)) != 0) {
(void)detrunc(ddep, ddep->de_FileSize, 0, NOCRED);
@@ -601,11 +603,11 @@
* entry in. Then write it to disk. NOTE: DOS directories
* do not get smaller as clusters are emptied.
*/
- error = pcbmap(ddep, de_cluster(pmp, ddep->de_fndoffset),
+ error = pcbmap(ddep, de_cluster(pmp, mlr->mlr_fndoffset),
&bn, &dirclust, &blsize);
if (error)
goto err_norollback;
- clusoffset = ddep->de_fndoffset;
+ clusoffset = mlr->mlr_fndoffset;
if (dirclust != MSDOSFSROOT)
clusoffset &= pmp->pm_crbomask;
if ((error = bread(pmp->pm_devvp, de_bn2kb(pmp, bn), blsize,
@@ -619,14 +621,14 @@
/*
* Now write the Win95 long name
*/
- if (ddep->de_fndcnt > 0) {
+ if (mlr->mlr_fndcnt > 0) {
u_int8_t chksum = winChksum(ndep->deName);
const u_char *un = (const u_char *)cnp->cn_nameptr;
int unlen = cnp->cn_namelen;
u_long xhavecnt;
- fndoffset = ddep->de_fndoffset;
- xhavecnt = ddep->de_fndcnt + 1;
+ fndoffset = mlr->mlr_fndoffset;
+ xhavecnt = mlr->mlr_fndcnt + 1;
for(; wcnt < xhavecnt; wcnt++) {
if ((fndoffset & pmp->pm_crbomask) == 0) {
@@ -705,7 +707,7 @@
* can't just call removede(), since directory is not in
* consistent state.
*/
- fndoffset = ddep->de_fndoffset;
+ fndoffset = mlr->mlr_fndoffset;
rberror = pcbmap(ddep, de_cluster(pmp, fndoffset),
&bn, NULL, &blsize);
if (rberror)
@@ -716,7 +718,7 @@
}
ndep = bptoep(pmp, bp, clusoffset);
- havecnt = ddep->de_fndcnt + 1;
+ havecnt = mlr->mlr_fndcnt + 1;
for(i = wcnt; i <= havecnt; i++) {
/* mark entry as deleted */
ndep->deName[0] = SLOT_DELETED;
@@ -985,9 +987,11 @@
* msdosfs_reclaim() which will remove the denode from the denode cache.
*/
int
-removede(struct denode *pdep, struct denode *dep)
+removede(struct denode *pdep, struct denode *dep,
+ const struct msdosfs_lookup_results *mlr)
/* pdep: directory where the entry is removed */
/* dep: file to be removed */
+ /* mlr: position of dep in pdep from lookup */
{
int error;
struct direntry *ep;
@@ -995,7 +999,7 @@
daddr_t bn;
int blsize;
struct msdosfsmount *pmp = pdep->de_pmp;
- u_long offset = pdep->de_fndoffset;
+ u_long offset = mlr->mlr_fndoffset;
#ifdef _KERNEL
int async = pdep->de_pmp->pm_mountp->mnt_flag & MNT_ASYNC;
#else
@@ -1039,7 +1043,7 @@
* entry in this block is a longfilename entry, too.
*/
if (ep->deAttributes != ATTR_WIN95
- && offset != pdep->de_fndoffset) {
+ && offset != mlr->mlr_fndoffset) {
brelse(bp, 0);
break;
}
diff -r 75f300c60d10 -r de22a13fc7c0 sys/fs/msdosfs/msdosfs_vnops.c
--- a/sys/fs/msdosfs/msdosfs_vnops.c Sat Oct 23 06:49:46 2021 +0000
+++ b/sys/fs/msdosfs/msdosfs_vnops.c Sat Oct 23 07:38:33 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: msdosfs_vnops.c,v 1.107 2021/10/20 03:08:17 thorpej Exp $ */
+/* $NetBSD: msdosfs_vnops.c,v 1.108 2021/10/23 07:38:33 hannken Exp $ */
/*-
* Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
@@ -48,7 +48,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: msdosfs_vnops.c,v 1.107 2021/10/20 03:08:17 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: msdosfs_vnops.c,v 1.108 2021/10/23 07:38:33 hannken Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -125,7 +125,7 @@
* change size.
*/
if (pdep->de_StartCluster == MSDOSFSROOT
- && pdep->de_fndoffset >= pdep->de_FileSize) {
+ && pdep->de_crap.mlr_fndoffset >= pdep->de_FileSize) {
error = ENOSPC;
goto bad;
}
@@ -149,7 +149,7 @@
ndirent.de_pmp = pdep->de_pmp;
ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE;
DETIMES(&ndirent, NULL, NULL, NULL, pdep->de_pmp->pm_gmtoff);
- if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0)
+ if ((error = createde(&ndirent, pdep, &pdep->de_crap, &dep, cnp)) != 0)
goto bad;
*ap->a_vpp = DETOV(dep);
cache_enter(ap->a_dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen,
@@ -725,7 +725,7 @@
if (ap->a_vp->v_type == VDIR)
error = EPERM;
else
- error = removede(ddep, dep);
+ error = removede(ddep, dep, &ddep->de_crap);
#ifdef MSDOSFS_DEBUG
printf("msdosfs_remove(), dep %p, usecount %d\n",
dep, vrefcnt(ap->a_vp));
@@ -896,8 +896,8 @@
/*
* Remember direntry place to use for destination
*/
- to_diroffset = dp->de_fndoffset;
- to_count = dp->de_fndcnt;
+ to_diroffset = dp->de_crap.mlr_fndoffset;
+ to_count = dp->de_crap.mlr_fndcnt;
/*
* If ".." must be changed (ie the directory gets a new
@@ -957,7 +957,7 @@
error = EISDIR;
goto tdvpbad;
}
- if ((error = removede(dp, xp)) != 0)
+ if ((error = removede(dp, xp, &dp->de_crap)) != 0)
goto tdvpbad;
VN_KNOTE(tdvp, NOTE_WRITE);
VN_KNOTE(tvp, NOTE_DELETE);
@@ -1004,7 +1004,7 @@
VOP_UNLOCK(fdvp);
xp = VTODE(fvp);
zp = VTODE(fdvp);
- from_diroffset = zp->de_fndoffset;
+ from_diroffset = zp->de_crap.mlr_fndoffset;
/*
* Ensure that the directory entry still exists and has not
@@ -1033,17 +1033,18 @@
*/
memcpy(oldname, ip->de_Name, 11);
memcpy(ip->de_Name, toname, 11); /* update denode */
- dp->de_fndoffset = to_diroffset;
- dp->de_fndcnt = to_count;
- error = createde(ip, dp, (struct denode **)0, tcnp);
+ dp->de_crap.mlr_fndoffset = to_diroffset;
+ dp->de_crap.mlr_fndcnt = to_count;
+ error = createde(ip, dp, &dp->de_crap, (struct denode **)0,
+ tcnp);
if (error) {
memcpy(ip->de_Name, oldname, 11);
VOP_UNLOCK(fvp);
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