patch-2.3.43 linux/fs/adfs/namei.c

• Lines: 114
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.42/linux/fs/adfs/namei.c
• Orig date: Thu May 13 10:53:59 1999

diff -u --recursive --new-file v2.3.42/linux/fs/adfs/namei.c linux/fs/adfs/namei.c
@@ -1,113 +0,0 @@
-/*
- *  linux/fs/adfs/namei.c
- *
- * Copyright (C) 1997 Russell King
- */
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/adfs_fs.h>
-#include <linux/fcntl.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/locks.h>
-
-/*
- * NOTE! unlike strncmp, ext2_match returns 1 for success, 0 for failure
- */
-static int adfs_match (int len, const char * const name, struct adfs_idir_entry *de)
-{
-	int i;
-
-	if (!de || len > ADFS_NAME_LEN)
-		return 0;
-	/*
-	 * "" means "." ---> so paths like "/usr/lib//libc.a" work
-	 */
-	if (!len && de->name_len == 1 && de->name[0] == '.' &&
-	    de->name[1] == '\0')
-		return 1;
-	if (len != de->name_len)
-		return 0;
-
-	for (i = 0; i < len; i++)
-		if ((de->name[i] ^ name[i]) & 0x5f)
-			return 0;
-	return 1;
-}
-
-static int adfs_find_entry (struct inode *dir, const char * const name, int namelen,
-			    struct adfs_idir_entry *ide)
-{
-	struct super_block *sb;
-	struct buffer_head *bh[4];
-	union  adfs_dirtail dt;
-	unsigned long parent_object_id, dir_object_id;
-	int buffers, pos;
-
-	sb = dir->i_sb;
-
-	if (adfs_inode_validate (dir)) {
-		adfs_error (sb, "adfs_find_entry",
-			    "invalid inode number: %lu", dir->i_ino);
-		return 0;
-	}
-
-	if (!(buffers = adfs_dir_read (dir, bh))) {
-		adfs_error (sb, "adfs_find_entry", "unable to read directory");
-		return 0;
-	}
-
-	if (adfs_dir_check (dir, bh, buffers, &dt)) {
-		adfs_dir_free (bh, buffers);
-		return 0;
-	}
-
-	parent_object_id = adfs_val (dt.new.dirparent, 3);
-	dir_object_id = adfs_inode_objid (dir);
-
-	if (namelen == 2 && name[0] == '.' && name[1] == '.') {
-		ide->name_len = 2;
-		ide->name[0] = ide->name[1] = '.';
-		ide->name[2] = '\0';
-		ide->inode_no = adfs_inode_generate (parent_object_id, 0);
-		adfs_dir_free (bh, buffers);
-		return 1;
-	}
-
-	pos = 5;
-
-	do {
-		if (!adfs_dir_get (sb, bh, buffers, pos, dir_object_id, ide))
-			break;
-
-		if (adfs_match (namelen, name, ide)) {
-			adfs_dir_free (bh, buffers);
-			return pos;
-		}
-		pos += 26;
-	} while (1);
-	adfs_dir_free (bh, buffers);
-	return 0;
-}
-
-struct dentry *adfs_lookup (struct inode *dir, struct dentry *dentry)
-{
-	struct inode *inode = NULL;
-	struct adfs_idir_entry de;
-	unsigned long ino;
-
-	if (dentry->d_name.len > ADFS_NAME_LEN)
-		return ERR_PTR(-ENAMETOOLONG);
-
-	if (adfs_find_entry (dir, dentry->d_name.name, dentry->d_name.len, &de)) {
-		ino = de.inode_no;
-		inode = iget (dir->i_sb, ino);
-
-		if (!inode)
-			return ERR_PTR(-EACCES);
-	}
-	d_add(dentry, inode);
-	return NULL;
-}