X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fjfs%2Fnamei.c;h=8c3a8e78d0f8cece26e645654f505f193aad3269;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=998410cccaa03e6d07a8fb32fc89fa4218207ac4;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git

diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 998410ccc..8c3a8e78d 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1,5 +1,5 @@
 /*
- *   Copyright (C) International Business Machines Corp., 2000-2003
+ *   Copyright (C) International Business Machines Corp., 2000-2004
  *   Portions Copyright (C) Christoph Hellwig, 2001-2002
  *
  *   This program is free software;  you can redistribute it and/or modify
@@ -18,6 +18,7 @@
  */
 
 #include <linux/fs.h>
+#include <linux/ctype.h>
 #include "jfs_incore.h"
 #include "jfs_superblock.h"
 #include "jfs_inode.h"
@@ -43,6 +44,7 @@ extern int jfs_init_acl(struct inode *, struct inode *);
  */
 struct inode_operations jfs_dir_inode_operations;
 struct file_operations jfs_dir_operations;
+struct dentry_operations jfs_ci_dentry_operations;
 
 static s64 commitZeroLink(tid_t, struct inode *);
 
@@ -702,7 +704,7 @@ int freeZeroLink(struct inode *ip)
 		pxdlock->flag = mlckFREEPXD;
 		PXDaddress(&pxdlock->pxd, xaddr);
 		PXDlength(&pxdlock->pxd, xlen);
-		txFreeMap(ip, pxdlock, 0, COMMIT_WMAP);
+		txFreeMap(ip, pxdlock, NULL, COMMIT_WMAP);
 	}
 
 	/*
@@ -722,7 +724,7 @@ int freeZeroLink(struct inode *ip)
 		pxdlock->flag = mlckFREEPXD;
 		PXDaddress(&pxdlock->pxd, xaddr);
 		PXDlength(&pxdlock->pxd, xlen);
-		txFreeMap(ip, pxdlock, 0, COMMIT_WMAP);
+		txFreeMap(ip, pxdlock, NULL, COMMIT_WMAP);
 	}
 
 	/*
@@ -1422,7 +1424,15 @@ static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, struc
 		return ERR_PTR(-EACCES);
 	}
 
-	return d_splice_alias(ip, dentry);
+	if (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2)
+		dentry->d_op = &jfs_ci_dentry_operations;
+
+	dentry = d_splice_alias(ip, dentry);
+
+	if (dentry && (JFS_SBI(dip->i_sb)->mntflag & JFS_OS2))
+		dentry->d_op = &jfs_ci_dentry_operations;
+
+	return dentry;
 }
 
 struct dentry *jfs_get_parent(struct dentry *dentry)
@@ -1476,3 +1486,46 @@ struct file_operations jfs_dir_operations = {
 	.readdir	= jfs_readdir,
 	.fsync		= jfs_fsync,
 };
+
+static int jfs_ci_hash(struct dentry *dir, struct qstr *this)
+{
+	unsigned long hash;
+	int i;
+
+	hash = init_name_hash();
+	for (i=0; i < this->len; i++)
+		hash = partial_name_hash(tolower(this->name[i]), hash);
+	this->hash = end_name_hash(hash);
+
+	return 0;
+}
+
+static int jfs_ci_compare(struct dentry *dir, struct qstr *a, struct qstr *b)
+{
+	int i, result = 1;
+
+	if (a->len != b->len)
+		goto out;
+	for (i=0; i < a->len; i++) {
+		if (tolower(a->name[i]) != tolower(b->name[i]))
+			goto out;
+	}
+	result = 0;
+
+	/*
+	 * We want creates to preserve case.  A negative dentry, a, that
+	 * has a different case than b may cause a new entry to be created
+	 * with the wrong case.  Since we can't tell if a comes from a negative
+	 * dentry, we blindly replace it with b.  This should be harmless if
+	 * a is not a negative dentry.
+	 */
+	memcpy((unsigned char *)a->name, b->name, a->len);
+out:
+	return result;
+}
+
+struct dentry_operations jfs_ci_dentry_operations =
+{
+	.d_hash = jfs_ci_hash,
+	.d_compare = jfs_ci_compare,
+};