1 files changed, 121 insertions, 0 deletions

diff --git a/fs/hfs/attr.c b/fs/hfs/attr.c
new file mode 100644
index 000000000000..e057ec542a6a
--- /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;
+}