1 files changed, 121 insertions, 0 deletions
diff --git a/fs/hfs/attr.c b/fs/hfs/attr.c
new file mode 100644
index 00000000000..e057ec542a6
--- /dev/null
+++ b/fs/hfs/attr.c
@@ -0,0 +1,121 @@
+/*
+ *  linux/fs/hfs/attr.c
+ *
+ * (C) 2003 Ardis Technologies <roman@ardistech.com>
+ *
+ * Export hfs data via xattr
+ */
+
+
+#include <linux/fs.h>
+#include <linux/xattr.h>
+
+#include "hfs_fs.h"
+#include "btree.h"
+
+int hfs_setxattr(struct dentry *dentry, const char *name,
+		 const void *value, size_t size, int flags)
+{
+	struct inode *inode = dentry->d_inode;
+	struct hfs_find_data fd;
+	hfs_cat_rec rec;
+	struct hfs_cat_file *file;
+	int res;
+
+	if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
+		return -EOPNOTSUPP;
+
+	res = hfs_find_init(HFS_SB(inode->i_sb)->cat_tree, &fd);
+	if (res)
+		return res;
+	fd.search_key->cat = HFS_I(inode)->cat_key;
+	res = hfs_brec_find(&fd);
+	if (res)
+		goto out;
+	hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
+			sizeof(struct hfs_cat_file));
+	file = &rec.file;
+
+	if (!strcmp(name, "hfs.type")) {
+		if (size == 4)
+			memcpy(&file->UsrWds.fdType, value, 4);
+		else
+			res = -ERANGE;
+	} else if (!strcmp(name, "hfs.creator")) {
+		if (size == 4)
+			memcpy(&file->UsrWds.fdCreator, value, 4);
+		else
+			res = -ERANGE;
+	} else
+		res = -EOPNOTSUPP;
+	if (!res)
+		hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
+				sizeof(struct hfs_cat_file));
+out:
+	hfs_find_exit(&fd);
+	return res;
+}
+
+ssize_t hfs_getxattr(struct dentry *dentry, const char *name,
+			 void *value, size_t size)
+{
+	struct inode *inode = dentry->d_inode;
+	struct hfs_find_data fd;
+	hfs_cat_rec rec;
+	struct hfs_cat_file *file;
+	ssize_t res = 0;
+
+	if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
+		return -EOPNOTSUPP;
+
+	if (size) {
+		res = hfs_find_init(HFS_SB(inode->i_sb)->cat_tree, &fd);
+		if (res)
+			return res;
+		fd.search_key->cat = HFS_I(inode)->cat_key;
+		res = hfs_brec_find(&fd);
+		if (res)
+			goto out;
+		hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
+				sizeof(struct hfs_cat_file));
+	}
+	file = &rec.file;
+
+	if (!strcmp(name, "hfs.type")) {
+		if (size >= 4) {
+			memcpy(value, &file->UsrWds.fdType, 4);
+			res = 4;
+		} else
+			res = size ? -ERANGE : 4;
+	} else if (!strcmp(name, "hfs.creator")) {
+		if (size >= 4) {
+			memcpy(value, &file->UsrWds.fdCreator, 4);
+			res = 4;
+		} else
+			res = size ? -ERANGE : 4;
+	} else
+		res = -ENODATA;
+out:
+	if (size)
+		hfs_find_exit(&fd);
+	return res;
+}
+
+#define HFS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type"))
+
+ssize_t hfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
+{
+	struct inode *inode = dentry->d_inode;
+
+	if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
+		return -EOPNOTSUPP;
+
+	if (!buffer || !size)
+		return HFS_ATTRLIST_SIZE;
+	if (size < HFS_ATTRLIST_SIZE)
+		return -ERANGE;
+	strcpy(buffer, "hfs.type");
+	strcpy(buffer + sizeof("hfs.type"), "hfs.creator");
+
+	return HFS_ATTRLIST_SIZE;
+}