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-rw-r--r--kernel4/symlink.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/kernel4/symlink.c b/kernel4/symlink.c
new file mode 100644
index 0000000..b42955f
--- /dev/null
+++ b/kernel4/symlink.c
@@ -0,0 +1,58 @@
+/* -*- linux-c -*- --------------------------------------------------------- *
+ *
+ * linux/fs/autofs/symlink.c
+ *
+ * Copyright 1997 Transmeta Corporation -- All Rights Reserved
+ *
+ * This file is part of the Linux kernel and is made available under
+ * the terms of the GNU General Public License, version 2, or at your
+ * option, any later version, incorporated herein by reference.
+ *
+ * ------------------------------------------------------------------------- */
+
+#include <linux/string.h>
+#include <linux/sched.h>
+#include "autofs_i.h"
+
+static int autofs_readlink(struct inode *inode, char *buffer, int buflen)
+{
+ struct autofs_symlink *sl;
+ int len;
+
+ sl = (struct autofs_symlink *)inode->u.generic_ip;
+ len = sl->len;
+ if (len > buflen) len = buflen;
+ copy_to_user(buffer,sl->data,len);
+ return len;
+}
+
+static struct dentry * autofs_follow_link(struct inode *inode, struct dentry *base)
+{
+ struct autofs_symlink *sl;
+
+ sl = (struct autofs_symlink *)inode->u.generic_ip;
+ return lookup_dentry(sl->data, base, 1);
+}
+
+struct inode_operations autofs_symlink_inode_operations = {
+ NULL, /* file operations */
+ NULL, /* create */
+ NULL, /* lookup */
+ NULL, /* link */
+ NULL, /* unlink */
+ NULL, /* symlink */
+ NULL, /* mkdir */
+ NULL, /* rmdir */
+ NULL, /* mknod */
+ NULL, /* rename */
+ autofs_readlink, /* readlink */
+ autofs_follow_link, /* follow_link */
+ NULL, /* readpage */
+ NULL, /* writepage */
+ NULL, /* bmap */
+ NULL, /* truncate */
+ NULL, /* permission */
+ NULL, /* smap */
+ NULL, /* updatepage */
+ NULL /* revalidate */
+};