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[src/trunk]: src/sys/ufs/ufs Remove ufs_checkpath() and ufs_readdotdot(). Th...
details: https://anonhg.NetBSD.org/src/rev/7100405ab111
branches: trunk
changeset: 796219:7100405ab111
user: hannken <hannken%NetBSD.org@localhost>
date: Sun May 25 13:48:40 2014 +0000
description:
Remove ufs_checkpath() and ufs_readdotdot(). These are relics
from the pre-genfs_rename era.
diffstat:
sys/ufs/ufs/ufs_extern.h | 5 +-
sys/ufs/ufs/ufs_lookup.c | 202 +----------------------------------------------
2 files changed, 3 insertions(+), 204 deletions(-)
diffs (242 lines):
diff -r bf8f494d8bcd -r 7100405ab111 sys/ufs/ufs/ufs_extern.h
--- a/sys/ufs/ufs/ufs_extern.h Sun May 25 13:47:22 2014 +0000
+++ b/sys/ufs/ufs/ufs_extern.h Sun May 25 13:48:40 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ufs_extern.h,v 1.74 2014/05/08 08:21:53 hannken Exp $ */
+/* $NetBSD: ufs_extern.h,v 1.75 2014/05/25 13:48:40 hannken Exp $ */
/*-
* Copyright (c) 1991, 1993, 1994
@@ -125,9 +125,6 @@
int ufs_dirrewrite(struct inode *, off_t,
struct inode *, ino_t, int, int, int);
int ufs_dirempty(struct inode *, ino_t, kauth_cred_t);
-int ufs_checkpath(struct inode *, struct inode *, kauth_cred_t);
-int ufs_parentcheck(struct vnode *, struct vnode *, kauth_cred_t,
- int *, struct vnode **);
int ufs_blkatoff(struct vnode *, off_t, char **, struct buf **, bool);
/* ufs_rename.c -- for lfs */
diff -r bf8f494d8bcd -r 7100405ab111 sys/ufs/ufs/ufs_lookup.c
--- a/sys/ufs/ufs/ufs_lookup.c Sun May 25 13:47:22 2014 +0000
+++ b/sys/ufs/ufs/ufs_lookup.c Sun May 25 13:48:40 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ufs_lookup.c,v 1.130 2014/05/08 08:21:53 hannken Exp $ */
+/* $NetBSD: ufs_lookup.c,v 1.131 2014/05/25 13:48:40 hannken Exp $ */
/*
* Copyright (c) 1989, 1993
@@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ufs_lookup.c,v 1.130 2014/05/08 08:21:53 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ufs_lookup.c,v 1.131 2014/05/25 13:48:40 hannken Exp $");
#ifdef _KERNEL_OPT
#include "opt_ffs.h"
@@ -1228,204 +1228,6 @@
return (1);
}
-/*
- * Check if source directory is in the path of the target directory.
- * Target is supplied locked, source is unlocked.
- * The target is always vput before returning.
- */
-int
-ufs_checkpath(struct inode *source, struct inode *target, kauth_cred_t cred)
-{
- struct vnode *nextvp, *vp;
- int error, rootino, namlen;
- struct dirtemplate dirbuf;
- const int needswap = UFS_MPNEEDSWAP(target->i_ump);
-
- vp = ITOV(target);
- if (target->i_number == source->i_number) {
- error = EEXIST;
- goto out;
- }
- rootino = UFS_ROOTINO;
- error = 0;
- if (target->i_number == rootino)
- goto out;
-
- for (;;) {
- if (vp->v_type != VDIR) {
- error = ENOTDIR;
- break;
- }
- error = vn_rdwr(UIO_READ, vp, (void *)&dirbuf,
- sizeof (struct dirtemplate), (off_t)0, UIO_SYSSPACE,
- IO_NODELOCKED, cred, NULL, NULL);
- if (error != 0)
- break;
-#if (BYTE_ORDER == LITTLE_ENDIAN)
- if (FSFMT(vp) && needswap == 0)
- namlen = dirbuf.dotdot_type;
- else
- namlen = dirbuf.dotdot_namlen;
-#else
- if (FSFMT(vp) && needswap != 0)
- namlen = dirbuf.dotdot_type;
- else
- namlen = dirbuf.dotdot_namlen;
-#endif
- if (namlen != 2 ||
- dirbuf.dotdot_name[0] != '.' ||
- dirbuf.dotdot_name[1] != '.') {
- error = ENOTDIR;
- break;
- }
- if (ufs_rw32(dirbuf.dotdot_ino, needswap) == source->i_number) {
- error = EINVAL;
- break;
- }
- if (ufs_rw32(dirbuf.dotdot_ino, needswap) == rootino)
- break;
- VOP_UNLOCK(vp);
- error = VFS_VGET(vp->v_mount,
- ufs_rw32(dirbuf.dotdot_ino, needswap), &nextvp);
- vrele(vp);
- if (error) {
- vp = NULL;
- break;
- }
- vp = nextvp;
- }
-
-out:
- if (error == ENOTDIR)
- printf("checkpath: .. not a directory\n");
- if (vp != NULL)
- vput(vp);
- return (error);
-}
-
-/*
- * Extract the inode number of ".." from a directory.
- * Helper for ufs_parentcheck.
- */
-static int
-ufs_readdotdot(struct vnode *vp, int needswap, kauth_cred_t cred, ino_t *result)
-{
- struct dirtemplate dirbuf;
- int namlen, error;
-
- error = vn_rdwr(UIO_READ, vp, &dirbuf,
- sizeof (struct dirtemplate), (off_t)0, UIO_SYSSPACE,
- IO_NODELOCKED, cred, NULL, NULL);
- if (error) {
- return error;
- }
-
-#if (BYTE_ORDER == LITTLE_ENDIAN)
- if (FSFMT(vp) && needswap == 0)
- namlen = dirbuf.dotdot_type;
- else
- namlen = dirbuf.dotdot_namlen;
-#else
- if (FSFMT(vp) && needswap != 0)
- namlen = dirbuf.dotdot_type;
- else
- namlen = dirbuf.dotdot_namlen;
-#endif
- if (namlen != 2 ||
- dirbuf.dotdot_name[0] != '.' ||
- dirbuf.dotdot_name[1] != '.') {
- printf("ufs_readdotdot: directory %llu contains "
- "garbage instead of ..\n",
- (unsigned long long) VTOI(vp)->i_number);
- return ENOTDIR;
- }
- *result = ufs_rw32(dirbuf.dotdot_ino, needswap);
- return 0;
-}
-
-/*
- * Check if LOWER is a descendent of UPPER. If we find UPPER, return
- * nonzero in FOUND and return a reference to the immediate descendent
- * of UPPER in UPPERCHILD. If we don't find UPPER (that is, if we
- * reach the volume root and that isn't UPPER), return zero in FOUND
- * and null in UPPERCHILD.
- *
- * Neither UPPER nor LOWER should be locked.
- *
- * On error (such as a permissions error checking up the directory
- * tree) fail entirely.
- *
- * Note that UPPER and LOWER must be on the same volume, and because
- * we inspect only that volume NEEDSWAP can be constant.
- */
-int
-ufs_parentcheck(struct vnode *upper, struct vnode *lower, kauth_cred_t cred,
- int *found_ret, struct vnode **upperchild_ret)
-{
- const int needswap = UFS_MPNEEDSWAP(VTOI(lower)->i_ump);
- ino_t upper_ino, found_ino = 0; /* XXX: gcc */
- struct vnode *current, *next;
- int error;
-
- if (upper == lower) {
- vref(upper);
- *found_ret = 1;
- *upperchild_ret = upper;
- return 0;
- }
- if (VTOI(lower)->i_number == UFS_ROOTINO) {
- *found_ret = 0;
- *upperchild_ret = NULL;
- return 0;
- }
-
- upper_ino = VTOI(upper)->i_number;
-
- current = lower;
- vref(current);
- vn_lock(current, LK_EXCLUSIVE | LK_RETRY);
-
- for (;;) {
- error = ufs_readdotdot(current, needswap, cred, &found_ino);
- if (error) {
- vput(current);
- return error;
- }
- if (found_ino == upper_ino) {
- VOP_UNLOCK(current);
- *found_ret = 1;
- *upperchild_ret = current;
- return 0;
- }
- if (found_ino == UFS_ROOTINO) {
- vput(current);
- *found_ret = 0;
- *upperchild_ret = NULL;
- return 0;
- }
- VOP_UNLOCK(current);
- error = VFS_VGET(current->v_mount, found_ino, &next);
- if (error) {
- vrele(current);
- return error;
- }
- KASSERT(VOP_ISLOCKED(next));
- if (next->v_type != VDIR) {
- printf("ufs_parentcheck: inode %llu reached via .. of "
- "inode %llu is not a directory\n",
- (unsigned long long)VTOI(next)->i_number,
- (unsigned long long)VTOI(current)->i_number);
- vput(next);
- vrele(current);
- return ENOTDIR;
- }
- vrele(current);
- current = next;
- }
-
- return 0;
-}
-
#define UFS_DIRRABLKS 0
int ufs_dirrablks = UFS_DIRRABLKS;
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