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exofs: symlink_inode and fast_symlink_inode operations

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Generic implementation of symlink ops.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
This commit is contained in:
Boaz Harrosh 2008-10-27 19:04:34 +02:00
parent e806271916
commit 982980d753
3 changed files with 62 additions and 1 deletions
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2
fs/exofs/Kbuild
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@ -12,5 +12,5 @@
# Kbuild - Gets included from the Kernels Makefile and build system # Kbuild - Gets included from the Kernels Makefile and build system
# #
exofs-y := osd.o inode.o file.o exofs-y := osd.o inode.o file.o symlink.o
obj-$(CONFIG_EXOFS_FS) += exofs.o obj-$(CONFIG_EXOFS_FS) += exofs.o

4
fs/exofs/exofs.h
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@ -138,4 +138,8 @@ int exofs_setattr(struct dentry *, struct iattr *);
extern const struct inode_operations exofs_file_inode_operations; extern const struct inode_operations exofs_file_inode_operations;
extern const struct file_operations exofs_file_operations; extern const struct file_operations exofs_file_operations;
/* symlink.c */
extern const struct inode_operations exofs_symlink_inode_operations;
extern const struct inode_operations exofs_fast_symlink_inode_operations;
#endif #endif

57
fs/exofs/symlink.c Normal file
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@ -0,0 +1,57 @@
/*
* Copyright (C) 2005, 2006
* Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
* Copyright (C) 2005, 2006
* International Business Machines
* Copyright (C) 2008, 2009
* Boaz Harrosh <bharrosh@panasas.com>
*
* 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;
}
const struct inode_operations exofs_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = page_follow_link_light,
.put_link = page_put_link,
};
const struct inode_operations exofs_fast_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = exofs_follow_link,
};