[PATCH 3/9] exofs: symlink_inode and fast_symlink_inode operations

Boaz Harrosh
2008-12-16T15:21:35Z

Generic implementation of symlink ops.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
---
fs/exofs/Kbuild | 2 +-
fs/exofs/exofs.h | 4 +++
fs/exofs/symlink.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 59 insertions(+), 1 deletions(-)
create mode 100644 fs/exofs/symlink.c

diff --git a/fs/exofs/Kbuild b/fs/exofs/Kbuild
index d9dedc9..b372058 100644
--- a/fs/exofs/Kbuild
+++ b/fs/exofs/Kbuild
@@ -26,5 +26,5 @@ KBUILD_CPPFLAGS := -I$(OSD_INC) $(KBUILD_CPPFLAGS)

endif

-exofs-objs := osd.o inode.o file.o
+exofs-objs := osd.o inode.o file.o symlink.o
obj-$(CONFIG_EXOFS_FS) += exofs.o
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index f11250c..6f9b56c 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -191,4 +191,8 @@ int exofs_setattr(struct dentry *, struct iattr *);
extern struct inode_operations exofs_file_inode_operations;
extern struct file_operations exofs_file_operations;

+/* symlink.c */
+extern struct inode_operations exofs_symlink_inode_operations;
+extern struct inode_operations exofs_fast_symlink_inode_operations;
+
#endif
diff --git a/fs/exofs/symlink.c b/fs/exofs/symlink.c
new file mode 100644
index 0000000..4275451
--- /dev/null
+++ b/fs/exofs/symlink.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2005, 2006
+ * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
+ * Copyright (C) 2005, 2006
+ * International Business Machines
+ *
+ * Copyrights for code taken from ext2:
+ * 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/inode.c
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * This file is part of exofs.
+ *
+ * exofs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation. Since it is based on ext2, and the only
+ * valid version of GPL for the Linux kernel is version 2, the only valid
+ * version of GPL for exofs is version 2.
+ *
+ * exofs is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with exofs; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/namei.h>
+
+#include "exofs.h"
+
+static void *exofs_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ struct exofs_i_info *oi = EXOFS_I(dentry->d_inode);
+ nd_set_link(nd, (char *)oi->i_data);
+ return NULL;
+}
+
+struct inode_operations exofs_symlink_inode_operations = {
+ .readlink = generic_readlink,
+ .follow_link = page_follow_link_light,
+ .put_link = page_put_link,
+};
+
+struct inode_operations exofs_fast_symlink_inode_operations = {
+ .readlink = generic_readlink,
+ .follow_link = exofs_follow_link,
+};
--
1.6.0.1