+/*
+ * linux/fs/ext2/symlink.c
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ * from
+ *
+ * linux/fs/minix/symlink.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * ext2 symlink handling code
+ *
+ * Modified for OBDFS:
+ * Copyright (C) 1999 Seagate Technology Inc. (author: braam@stelias.com)
+ */
+
+#include <asm/uaccess.h>
+
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/ext2_fs.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/stat.h>
+
+static int obdfs_readlink (struct dentry *, char *, int);
+static struct dentry *obdfs_follow_link(struct dentry *, struct dentry *, unsigned int);
+
+static struct dentry * ext2_follow_link(struct dentry * dentry,
+ struct dentry *base,
+ unsigned int follow)
+{
+ struct inode *inode = dentry->d_inode;
+ struct page *page = NULL;
+ int error;
+ char * link;
+
+ link = (char *) inode->u.ext2_i.i_data;
+ if (inode->i_blocks) {
+ if (!(page = obdfs_getpage(inode, 0, 0, &error))) {
+ dput(base);
+ return ERR_PTR(-EIO);
+ }
+ link = bh->b_data;
+ }
+ UPDATE_ATIME(inode);
+ base = lookup_dentry(link, base, follow);
+ if (bh)
+ brelse(bh);
+ return base;
+}
+
+static int ext2_readlink (struct dentry * dentry, char * buffer, int buflen)
+{
+ struct inode *inode = dentry->d_inode;
+ struct buffer_head * bh = NULL;
+ char * link;
+ int i;
+
+ if (buflen > inode->i_sb->s_blocksize - 1)
+ buflen = inode->i_sb->s_blocksize - 1;
+
+ link = (char *) inode->u.ext2_i.i_data;
+ if (inode->i_blocks) {
+ int err;
+ bh = ext2_bread (inode, 0, 0, &err);
+ if (!bh) {
+ if(err < 0) /* indicate type of error */
+ return err;
+ return 0;
+ }
+ link = bh->b_data;
+ }
+
+ i = 0;
+ while (i < buflen && link[i])
+ i++;
+ if (copy_to_user(buffer, link, i))
+ i = -EFAULT;
+ if (bh)
+ brelse (bh);
+ return i;
+}