2006-01-17 00:50:04 +08:00
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/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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*/
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/namei.h>
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#include <linux/utsname.h>
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#include <linux/mm.h>
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#include <linux/xattr.h>
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#include <linux/posix_acl.h>
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2006-02-28 06:23:27 +08:00
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#include <linux/gfs2_ondisk.h>
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2006-03-29 03:14:04 +08:00
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#include <linux/crc32.h>
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2006-01-17 00:50:04 +08:00
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#include <asm/semaphore.h>
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#include <asm/uaccess.h>
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#include "gfs2.h"
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2006-02-28 06:23:27 +08:00
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#include "lm_interface.h"
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#include "incore.h"
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2006-01-17 00:50:04 +08:00
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#include "acl.h"
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#include "bmap.h"
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#include "dir.h"
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#include "eaops.h"
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#include "eattr.h"
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#include "glock.h"
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#include "inode.h"
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#include "meta_io.h"
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#include "ops_dentry.h"
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#include "ops_inode.h"
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#include "page.h"
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#include "quota.h"
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#include "rgrp.h"
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#include "trans.h"
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#include "unlinked.h"
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2006-02-28 06:23:27 +08:00
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#include "util.h"
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2006-01-17 00:50:04 +08:00
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/**
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* gfs2_create - Create a file
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* @dir: The directory in which to create the file
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* @dentry: The dentry of the new file
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* @mode: The mode of the new file
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*
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* Returns: errno
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*/
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static int gfs2_create(struct inode *dir, struct dentry *dentry,
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int mode, struct nameidata *nd)
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{
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2006-02-28 06:23:27 +08:00
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struct gfs2_inode *dip = dir->u.generic_ip;
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2006-01-17 00:50:04 +08:00
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struct gfs2_sbd *sdp = dip->i_sbd;
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struct gfs2_holder ghs[2];
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struct inode *inode;
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int new = 1;
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gfs2_holder_init(dip->i_gl, 0, 0, ghs);
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for (;;) {
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2006-02-13 20:27:43 +08:00
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inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode);
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if (!IS_ERR(inode)) {
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2006-01-17 00:50:04 +08:00
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gfs2_trans_end(sdp);
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if (dip->i_alloc.al_rgd)
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gfs2_inplace_release(dip);
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gfs2_quota_unlock(dip);
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gfs2_alloc_put(dip);
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gfs2_glock_dq_uninit_m(2, ghs);
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break;
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2006-02-13 20:27:43 +08:00
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} else if (PTR_ERR(inode) != -EEXIST ||
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2006-01-17 00:50:04 +08:00
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(nd->intent.open.flags & O_EXCL)) {
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gfs2_holder_uninit(ghs);
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2006-02-13 20:27:43 +08:00
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return PTR_ERR(inode);
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2006-01-17 00:50:04 +08:00
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}
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2006-03-21 01:30:04 +08:00
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inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
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if (inode) {
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if (!IS_ERR(inode)) {
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new = 0;
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gfs2_holder_uninit(ghs);
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break;
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} else {
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gfs2_holder_uninit(ghs);
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return PTR_ERR(inode);
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}
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2006-01-17 00:50:04 +08:00
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}
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}
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d_instantiate(dentry, inode);
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if (new)
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mark_inode_dirty(inode);
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return 0;
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}
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/**
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* gfs2_lookup - Look up a filename in a directory and return its inode
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* @dir: The directory inode
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* @dentry: The dentry of the new inode
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* @nd: passed from Linux VFS, ignored by us
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*
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* Called by the VFS layer. Lock dir and call gfs2_lookupi()
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*
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* Returns: errno
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*/
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static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
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struct nameidata *nd)
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{
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struct inode *inode = NULL;
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2006-03-21 01:30:04 +08:00
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dentry->d_op = &gfs2_dops;
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2006-01-17 00:50:04 +08:00
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2006-03-21 01:30:04 +08:00
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inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
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if (inode && IS_ERR(inode))
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return ERR_PTR(PTR_ERR(inode));
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2006-01-17 00:50:04 +08:00
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if (inode)
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return d_splice_alias(inode, dentry);
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d_add(dentry, inode);
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return NULL;
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}
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/**
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* gfs2_link - Link to a file
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* @old_dentry: The inode to link
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* @dir: Add link to this directory
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* @dentry: The name of the link
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*
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* Link the inode in "old_dentry" into the directory "dir" with the
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* name in "dentry".
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*
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* Returns: errno
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*/
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static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
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struct dentry *dentry)
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{
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2006-02-28 06:23:27 +08:00
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struct gfs2_inode *dip = dir->u.generic_ip;
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2006-01-17 00:50:04 +08:00
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struct gfs2_sbd *sdp = dip->i_sbd;
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struct inode *inode = old_dentry->d_inode;
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2006-02-28 06:23:27 +08:00
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struct gfs2_inode *ip = inode->u.generic_ip;
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2006-01-17 00:50:04 +08:00
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struct gfs2_holder ghs[2];
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int alloc_required;
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int error;
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if (S_ISDIR(ip->i_di.di_mode))
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return -EPERM;
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gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
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gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
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error = gfs2_glock_nq_m(2, ghs);
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if (error)
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goto out;
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error = gfs2_repermission(dir, MAY_WRITE | MAY_EXEC, NULL);
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if (error)
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goto out_gunlock;
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2006-03-21 01:30:04 +08:00
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error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
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2006-01-17 00:50:04 +08:00
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switch (error) {
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case -ENOENT:
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break;
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case 0:
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error = -EEXIST;
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default:
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goto out_gunlock;
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}
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error = -EINVAL;
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if (!dip->i_di.di_nlink)
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goto out_gunlock;
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error = -EFBIG;
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if (dip->i_di.di_entries == (uint32_t)-1)
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goto out_gunlock;
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error = -EPERM;
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if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
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goto out_gunlock;
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error = -EINVAL;
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if (!ip->i_di.di_nlink)
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goto out_gunlock;
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error = -EMLINK;
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if (ip->i_di.di_nlink == (uint32_t)-1)
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goto out_gunlock;
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2006-03-21 01:30:04 +08:00
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alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
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if (error < 0)
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2006-01-17 00:50:04 +08:00
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goto out_gunlock;
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2006-03-21 01:30:04 +08:00
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error = 0;
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2006-01-17 00:50:04 +08:00
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if (alloc_required) {
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struct gfs2_alloc *al = gfs2_alloc_get(dip);
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error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
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if (error)
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goto out_alloc;
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error = gfs2_quota_check(dip, dip->i_di.di_uid,
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dip->i_di.di_gid);
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if (error)
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goto out_gunlock_q;
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al->al_requested = sdp->sd_max_dirres;
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error = gfs2_inplace_reserve(dip);
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if (error)
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goto out_gunlock_q;
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error = gfs2_trans_begin(sdp,
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sdp->sd_max_dirres +
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al->al_rgd->rd_ri.ri_length +
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2 * RES_DINODE + RES_STATFS +
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RES_QUOTA, 0);
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if (error)
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goto out_ipres;
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} else {
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error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
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if (error)
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goto out_ipres;
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}
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2006-03-21 01:30:04 +08:00
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error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
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2006-01-17 00:50:04 +08:00
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IF2DT(ip->i_di.di_mode));
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if (error)
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goto out_end_trans;
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error = gfs2_change_nlink(ip, +1);
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out_end_trans:
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gfs2_trans_end(sdp);
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out_ipres:
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if (alloc_required)
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gfs2_inplace_release(dip);
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out_gunlock_q:
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if (alloc_required)
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gfs2_quota_unlock(dip);
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out_alloc:
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if (alloc_required)
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gfs2_alloc_put(dip);
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out_gunlock:
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gfs2_glock_dq_m(2, ghs);
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out:
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gfs2_holder_uninit(ghs);
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gfs2_holder_uninit(ghs + 1);
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if (!error) {
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atomic_inc(&inode->i_count);
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d_instantiate(dentry, inode);
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mark_inode_dirty(inode);
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}
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return error;
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}
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/**
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* gfs2_unlink - Unlink a file
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* @dir: The inode of the directory containing the file to unlink
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* @dentry: The file itself
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*
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* Unlink a file. Call gfs2_unlinki()
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*
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* Returns: errno
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*/
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static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
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{
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2006-02-28 06:23:27 +08:00
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struct gfs2_inode *dip = dir->u.generic_ip;
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2006-01-17 00:50:04 +08:00
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struct gfs2_sbd *sdp = dip->i_sbd;
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2006-02-28 06:23:27 +08:00
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struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
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2006-01-17 00:50:04 +08:00
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struct gfs2_unlinked *ul;
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struct gfs2_holder ghs[2];
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int error;
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error = gfs2_unlinked_get(sdp, &ul);
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if (error)
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return error;
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gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
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gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
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error = gfs2_glock_nq_m(2, ghs);
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if (error)
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goto out;
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error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
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if (error)
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goto out_gunlock;
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error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF +
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RES_UNLINKED, 0);
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if (error)
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goto out_gunlock;
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error = gfs2_unlinki(dip, &dentry->d_name, ip,ul);
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gfs2_trans_end(sdp);
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out_gunlock:
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gfs2_glock_dq_m(2, ghs);
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out:
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gfs2_holder_uninit(ghs);
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gfs2_holder_uninit(ghs + 1);
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gfs2_unlinked_put(sdp, ul);
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return error;
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}
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/**
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* gfs2_symlink - Create a symlink
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* @dir: The directory to create the symlink in
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* @dentry: The dentry to put the symlink in
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* @symname: The thing which the link points to
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*
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* Returns: errno
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*/
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static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
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const char *symname)
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{
|
2006-02-28 06:23:27 +08:00
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struct gfs2_inode *dip = dir->u.generic_ip, *ip;
|
2006-01-17 00:50:04 +08:00
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struct gfs2_sbd *sdp = dip->i_sbd;
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struct gfs2_holder ghs[2];
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struct inode *inode;
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struct buffer_head *dibh;
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int size;
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int error;
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/* Must be stuffed with a null terminator for gfs2_follow_link() */
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size = strlen(symname);
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if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
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return -ENAMETOOLONG;
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gfs2_holder_init(dip->i_gl, 0, 0, ghs);
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2006-02-13 20:27:43 +08:00
|
|
|
inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO);
|
|
|
|
if (IS_ERR(inode)) {
|
2006-01-17 00:50:04 +08:00
|
|
|
gfs2_holder_uninit(ghs);
|
2006-02-13 20:27:43 +08:00
|
|
|
return PTR_ERR(inode);
|
2006-01-17 00:50:04 +08:00
|
|
|
}
|
|
|
|
|
2006-02-28 06:23:27 +08:00
|
|
|
ip = ghs[1].gh_gl->gl_object;
|
2006-01-17 00:50:04 +08:00
|
|
|
|
|
|
|
ip->i_di.di_size = size;
|
|
|
|
|
|
|
|
error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
|
|
|
|
|
if (!gfs2_assert_withdraw(sdp, !error)) {
|
|
|
|
gfs2_dinode_out(&ip->i_di, dibh->b_data);
|
|
|
|
memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
|
|
|
|
size);
|
|
|
|
brelse(dibh);
|
|
|
|
}
|
|
|
|
|
|
|
|
gfs2_trans_end(sdp);
|
|
|
|
if (dip->i_alloc.al_rgd)
|
|
|
|
gfs2_inplace_release(dip);
|
|
|
|
gfs2_quota_unlock(dip);
|
|
|
|
gfs2_alloc_put(dip);
|
|
|
|
|
|
|
|
gfs2_glock_dq_uninit_m(2, ghs);
|
|
|
|
|
|
|
|
d_instantiate(dentry, inode);
|
|
|
|
mark_inode_dirty(inode);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_mkdir - Make a directory
|
|
|
|
* @dir: The parent directory of the new one
|
|
|
|
* @dentry: The dentry of the new directory
|
|
|
|
* @mode: The mode of the new directory
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *dip = dir->u.generic_ip, *ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_sbd *sdp = dip->i_sbd;
|
|
|
|
struct gfs2_holder ghs[2];
|
|
|
|
struct inode *inode;
|
|
|
|
struct buffer_head *dibh;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
gfs2_holder_init(dip->i_gl, 0, 0, ghs);
|
|
|
|
|
2006-02-13 20:27:43 +08:00
|
|
|
inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode);
|
|
|
|
if (IS_ERR(inode)) {
|
2006-01-17 00:50:04 +08:00
|
|
|
gfs2_holder_uninit(ghs);
|
2006-02-13 20:27:43 +08:00
|
|
|
return PTR_ERR(inode);
|
2006-01-17 00:50:04 +08:00
|
|
|
}
|
|
|
|
|
2006-02-28 06:23:27 +08:00
|
|
|
ip = ghs[1].gh_gl->gl_object;
|
2006-01-17 00:50:04 +08:00
|
|
|
|
|
|
|
ip->i_di.di_nlink = 2;
|
|
|
|
ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
|
|
|
|
ip->i_di.di_flags |= GFS2_DIF_JDATA;
|
|
|
|
ip->i_di.di_payload_format = GFS2_FORMAT_DE;
|
|
|
|
ip->i_di.di_entries = 2;
|
|
|
|
|
|
|
|
error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
|
|
|
|
|
if (!gfs2_assert_withdraw(sdp, !error)) {
|
|
|
|
struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
|
2006-03-21 01:30:04 +08:00
|
|
|
struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
|
2006-03-29 03:14:04 +08:00
|
|
|
struct qstr str;
|
2006-01-17 00:50:04 +08:00
|
|
|
|
2006-03-29 03:14:04 +08:00
|
|
|
gfs2_str2qstr(&str, ".");
|
2006-03-21 01:30:04 +08:00
|
|
|
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
|
|
|
|
gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent);
|
2006-01-17 00:50:04 +08:00
|
|
|
dent->de_inum = di->di_num; /* already GFS2 endian */
|
|
|
|
dent->de_type = DT_DIR;
|
|
|
|
di->di_entries = cpu_to_be32(1);
|
|
|
|
|
2006-03-29 03:14:04 +08:00
|
|
|
gfs2_str2qstr(&str, "..");
|
2006-03-21 01:30:04 +08:00
|
|
|
dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
|
|
|
|
gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
|
2006-01-17 00:50:04 +08:00
|
|
|
|
|
|
|
gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum);
|
|
|
|
dent->de_type = DT_DIR;
|
|
|
|
|
|
|
|
gfs2_dinode_out(&ip->i_di, (char *)di);
|
|
|
|
|
|
|
|
brelse(dibh);
|
|
|
|
}
|
|
|
|
|
|
|
|
error = gfs2_change_nlink(dip, +1);
|
|
|
|
gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
|
|
|
|
|
|
|
|
gfs2_trans_end(sdp);
|
|
|
|
if (dip->i_alloc.al_rgd)
|
|
|
|
gfs2_inplace_release(dip);
|
|
|
|
gfs2_quota_unlock(dip);
|
|
|
|
gfs2_alloc_put(dip);
|
|
|
|
|
|
|
|
gfs2_glock_dq_uninit_m(2, ghs);
|
|
|
|
|
|
|
|
d_instantiate(dentry, inode);
|
|
|
|
mark_inode_dirty(inode);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_rmdir - Remove a directory
|
|
|
|
* @dir: The parent directory of the directory to be removed
|
|
|
|
* @dentry: The dentry of the directory to remove
|
|
|
|
*
|
|
|
|
* Remove a directory. Call gfs2_rmdiri()
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *dip = dir->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_sbd *sdp = dip->i_sbd;
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_unlinked *ul;
|
|
|
|
struct gfs2_holder ghs[2];
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = gfs2_unlinked_get(sdp, &ul);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
|
|
|
|
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
|
|
|
|
|
|
|
|
error = gfs2_glock_nq_m(2, ghs);
|
|
|
|
if (error)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
|
|
|
|
if (ip->i_di.di_entries < 2) {
|
|
|
|
if (gfs2_consist_inode(ip))
|
|
|
|
gfs2_dinode_print(&ip->i_di);
|
|
|
|
error = -EIO;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
if (ip->i_di.di_entries > 2) {
|
|
|
|
error = -ENOTEMPTY;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF +
|
|
|
|
RES_UNLINKED, 0);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
|
|
|
|
error = gfs2_rmdiri(dip, &dentry->d_name, ip, ul);
|
|
|
|
|
|
|
|
gfs2_trans_end(sdp);
|
|
|
|
|
|
|
|
out_gunlock:
|
|
|
|
gfs2_glock_dq_m(2, ghs);
|
|
|
|
|
|
|
|
out:
|
|
|
|
gfs2_holder_uninit(ghs);
|
|
|
|
gfs2_holder_uninit(ghs + 1);
|
|
|
|
|
|
|
|
gfs2_unlinked_put(sdp, ul);
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_mknod - Make a special file
|
|
|
|
* @dir: The directory in which the special file will reside
|
|
|
|
* @dentry: The dentry of the special file
|
|
|
|
* @mode: The mode of the special file
|
|
|
|
* @rdev: The device specification of the special file
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
|
|
|
|
dev_t dev)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *dip = dir->u.generic_ip, *ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_sbd *sdp = dip->i_sbd;
|
|
|
|
struct gfs2_holder ghs[2];
|
|
|
|
struct inode *inode;
|
|
|
|
struct buffer_head *dibh;
|
|
|
|
uint32_t major = 0, minor = 0;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
switch (mode & S_IFMT) {
|
|
|
|
case S_IFBLK:
|
|
|
|
case S_IFCHR:
|
|
|
|
major = MAJOR(dev);
|
|
|
|
minor = MINOR(dev);
|
|
|
|
break;
|
|
|
|
case S_IFIFO:
|
|
|
|
case S_IFSOCK:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
};
|
|
|
|
|
|
|
|
gfs2_holder_init(dip->i_gl, 0, 0, ghs);
|
|
|
|
|
2006-02-13 20:27:43 +08:00
|
|
|
inode = gfs2_createi(ghs, &dentry->d_name, mode);
|
|
|
|
if (IS_ERR(inode)) {
|
2006-01-17 00:50:04 +08:00
|
|
|
gfs2_holder_uninit(ghs);
|
2006-02-13 20:27:43 +08:00
|
|
|
return PTR_ERR(inode);
|
2006-01-17 00:50:04 +08:00
|
|
|
}
|
|
|
|
|
2006-02-28 06:23:27 +08:00
|
|
|
ip = ghs[1].gh_gl->gl_object;
|
2006-01-17 00:50:04 +08:00
|
|
|
|
|
|
|
ip->i_di.di_major = major;
|
|
|
|
ip->i_di.di_minor = minor;
|
|
|
|
|
|
|
|
error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
|
|
|
|
|
if (!gfs2_assert_withdraw(sdp, !error)) {
|
|
|
|
gfs2_dinode_out(&ip->i_di, dibh->b_data);
|
|
|
|
brelse(dibh);
|
|
|
|
}
|
|
|
|
|
|
|
|
gfs2_trans_end(sdp);
|
|
|
|
if (dip->i_alloc.al_rgd)
|
|
|
|
gfs2_inplace_release(dip);
|
|
|
|
gfs2_quota_unlock(dip);
|
|
|
|
gfs2_alloc_put(dip);
|
|
|
|
|
|
|
|
gfs2_glock_dq_uninit_m(2, ghs);
|
|
|
|
|
|
|
|
d_instantiate(dentry, inode);
|
|
|
|
mark_inode_dirty(inode);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_rename - Rename a file
|
|
|
|
* @odir: Parent directory of old file name
|
|
|
|
* @odentry: The old dentry of the file
|
|
|
|
* @ndir: Parent directory of new file name
|
|
|
|
* @ndentry: The new dentry of the file
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_rename(struct inode *odir, struct dentry *odentry,
|
|
|
|
struct inode *ndir, struct dentry *ndentry)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *odip = odir->u.generic_ip;
|
|
|
|
struct gfs2_inode *ndip = ndir->u.generic_ip;
|
|
|
|
struct gfs2_inode *ip = odentry->d_inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_inode *nip = NULL;
|
|
|
|
struct gfs2_sbd *sdp = odip->i_sbd;
|
|
|
|
struct gfs2_unlinked *ul;
|
|
|
|
struct gfs2_holder ghs[4], r_gh;
|
|
|
|
unsigned int num_gh;
|
|
|
|
int dir_rename = 0;
|
|
|
|
int alloc_required;
|
|
|
|
unsigned int x;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (ndentry->d_inode) {
|
2006-02-28 06:23:27 +08:00
|
|
|
nip = ndentry->d_inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
if (ip == nip)
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = gfs2_unlinked_get(sdp, &ul);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
/* Make sure we aren't trying to move a dirctory into it's subdir */
|
|
|
|
|
|
|
|
if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
|
|
|
|
dir_rename = 1;
|
|
|
|
|
|
|
|
error = gfs2_glock_nq_init(sdp->sd_rename_gl,
|
|
|
|
LM_ST_EXCLUSIVE, 0,
|
|
|
|
&r_gh);
|
|
|
|
if (error)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
error = gfs2_ok_to_move(ip, ndip);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock_r;
|
|
|
|
}
|
|
|
|
|
|
|
|
gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
|
|
|
|
gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
|
|
|
|
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
|
|
|
|
num_gh = 3;
|
|
|
|
|
|
|
|
if (nip)
|
|
|
|
gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
|
|
|
|
|
|
|
|
error = gfs2_glock_nq_m(num_gh, ghs);
|
|
|
|
if (error)
|
|
|
|
goto out_uninit;
|
|
|
|
|
|
|
|
/* Check out the old directory */
|
|
|
|
|
|
|
|
error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
|
|
|
|
/* Check out the new directory */
|
|
|
|
|
|
|
|
if (nip) {
|
|
|
|
error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
|
|
|
|
if (S_ISDIR(nip->i_di.di_mode)) {
|
|
|
|
if (nip->i_di.di_entries < 2) {
|
|
|
|
if (gfs2_consist_inode(nip))
|
|
|
|
gfs2_dinode_print(&nip->i_di);
|
|
|
|
error = -EIO;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
if (nip->i_di.di_entries > 2) {
|
|
|
|
error = -ENOTEMPTY;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
error = gfs2_repermission(ndir, MAY_WRITE | MAY_EXEC, NULL);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
|
2006-03-21 01:30:04 +08:00
|
|
|
error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
|
2006-01-17 00:50:04 +08:00
|
|
|
switch (error) {
|
|
|
|
case -ENOENT:
|
|
|
|
error = 0;
|
|
|
|
break;
|
|
|
|
case 0:
|
|
|
|
error = -EEXIST;
|
|
|
|
default:
|
|
|
|
goto out_gunlock;
|
|
|
|
};
|
|
|
|
|
|
|
|
if (odip != ndip) {
|
|
|
|
if (!ndip->i_di.di_nlink) {
|
|
|
|
error = -EINVAL;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
if (ndip->i_di.di_entries == (uint32_t)-1) {
|
|
|
|
error = -EFBIG;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
if (S_ISDIR(ip->i_di.di_mode) &&
|
|
|
|
ndip->i_di.di_nlink == (uint32_t)-1) {
|
|
|
|
error = -EMLINK;
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check out the dir to be renamed */
|
|
|
|
|
|
|
|
if (dir_rename) {
|
|
|
|
error = gfs2_repermission(odentry->d_inode, MAY_WRITE, NULL);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
|
2006-03-21 01:30:04 +08:00
|
|
|
alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
|
|
|
|
if (error < 0)
|
2006-01-17 00:50:04 +08:00
|
|
|
goto out_gunlock;
|
2006-03-21 01:30:04 +08:00
|
|
|
error = 0;
|
2006-01-17 00:50:04 +08:00
|
|
|
|
|
|
|
if (alloc_required) {
|
|
|
|
struct gfs2_alloc *al = gfs2_alloc_get(ndip);
|
|
|
|
|
|
|
|
error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
|
|
|
|
if (error)
|
|
|
|
goto out_alloc;
|
|
|
|
|
|
|
|
error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
|
|
|
|
ndip->i_di.di_gid);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock_q;
|
|
|
|
|
|
|
|
al->al_requested = sdp->sd_max_dirres;
|
|
|
|
|
|
|
|
error = gfs2_inplace_reserve(ndip);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock_q;
|
|
|
|
|
|
|
|
error = gfs2_trans_begin(sdp,
|
|
|
|
sdp->sd_max_dirres +
|
|
|
|
al->al_rgd->rd_ri.ri_length +
|
|
|
|
4 * RES_DINODE + 4 * RES_LEAF +
|
|
|
|
RES_UNLINKED + RES_STATFS +
|
|
|
|
RES_QUOTA, 0);
|
|
|
|
if (error)
|
|
|
|
goto out_ipreserv;
|
|
|
|
} else {
|
|
|
|
error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
|
|
|
|
5 * RES_LEAF +
|
|
|
|
RES_UNLINKED, 0);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Remove the target file, if it exists */
|
|
|
|
|
|
|
|
if (nip) {
|
|
|
|
if (S_ISDIR(nip->i_di.di_mode))
|
|
|
|
error = gfs2_rmdiri(ndip, &ndentry->d_name, nip, ul);
|
|
|
|
else
|
|
|
|
error = gfs2_unlinki(ndip, &ndentry->d_name, nip, ul);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dir_rename) {
|
|
|
|
struct qstr name;
|
2006-03-29 03:14:04 +08:00
|
|
|
gfs2_str2qstr(&name, "..");
|
2006-01-17 00:50:04 +08:00
|
|
|
|
|
|
|
error = gfs2_change_nlink(ndip, +1);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
error = gfs2_change_nlink(odip, -1);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
|
|
|
|
error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
} else {
|
|
|
|
struct buffer_head *dibh;
|
|
|
|
error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
ip->i_di.di_ctime = get_seconds();
|
2006-01-18 19:19:28 +08:00
|
|
|
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
|
2006-01-17 00:50:04 +08:00
|
|
|
gfs2_dinode_out(&ip->i_di, dibh->b_data);
|
|
|
|
brelse(dibh);
|
|
|
|
}
|
|
|
|
|
|
|
|
error = gfs2_dir_del(odip, &odentry->d_name);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
|
2006-03-21 01:30:04 +08:00
|
|
|
error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
|
2006-01-17 00:50:04 +08:00
|
|
|
IF2DT(ip->i_di.di_mode));
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
|
|
|
|
out_end_trans:
|
|
|
|
gfs2_trans_end(sdp);
|
|
|
|
|
|
|
|
out_ipreserv:
|
|
|
|
if (alloc_required)
|
|
|
|
gfs2_inplace_release(ndip);
|
|
|
|
|
|
|
|
out_gunlock_q:
|
|
|
|
if (alloc_required)
|
|
|
|
gfs2_quota_unlock(ndip);
|
|
|
|
|
|
|
|
out_alloc:
|
|
|
|
if (alloc_required)
|
|
|
|
gfs2_alloc_put(ndip);
|
|
|
|
|
|
|
|
out_gunlock:
|
|
|
|
gfs2_glock_dq_m(num_gh, ghs);
|
|
|
|
|
|
|
|
out_uninit:
|
|
|
|
for (x = 0; x < num_gh; x++)
|
|
|
|
gfs2_holder_uninit(ghs + x);
|
|
|
|
|
|
|
|
out_gunlock_r:
|
|
|
|
if (dir_rename)
|
|
|
|
gfs2_glock_dq_uninit(&r_gh);
|
|
|
|
|
|
|
|
out:
|
|
|
|
gfs2_unlinked_put(sdp, ul);
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_readlink - Read the value of a symlink
|
|
|
|
* @dentry: the symlink
|
|
|
|
* @buf: the buffer to read the symlink data into
|
|
|
|
* @size: the size of the buffer
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
|
|
|
|
int user_size)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
char array[GFS2_FAST_NAME_SIZE], *buf = array;
|
|
|
|
unsigned int len = GFS2_FAST_NAME_SIZE;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = gfs2_readlinki(ip, &buf, &len);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
if (user_size > len - 1)
|
|
|
|
user_size = len - 1;
|
|
|
|
|
|
|
|
if (copy_to_user(user_buf, buf, user_size))
|
|
|
|
error = -EFAULT;
|
|
|
|
else
|
|
|
|
error = user_size;
|
|
|
|
|
|
|
|
if (buf != array)
|
|
|
|
kfree(buf);
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_follow_link - Follow a symbolic link
|
|
|
|
* @dentry: The dentry of the link
|
|
|
|
* @nd: Data that we pass to vfs_follow_link()
|
|
|
|
*
|
|
|
|
* This can handle symlinks of any size. It is optimised for symlinks
|
|
|
|
* under GFS2_FAST_NAME_SIZE.
|
|
|
|
*
|
|
|
|
* Returns: 0 on success or error code
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
char array[GFS2_FAST_NAME_SIZE], *buf = array;
|
|
|
|
unsigned int len = GFS2_FAST_NAME_SIZE;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = gfs2_readlinki(ip, &buf, &len);
|
|
|
|
if (!error) {
|
|
|
|
error = vfs_follow_link(nd, buf);
|
|
|
|
if (buf != array)
|
|
|
|
kfree(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ERR_PTR(error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_permission -
|
|
|
|
* @inode:
|
|
|
|
* @mask:
|
|
|
|
* @nd: passed from Linux VFS, ignored by us
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_holder i_gh;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (ip->i_vn == ip->i_gl->gl_vn)
|
|
|
|
return generic_permission(inode, mask, gfs2_check_acl);
|
|
|
|
|
|
|
|
error = gfs2_glock_nq_init(ip->i_gl,
|
|
|
|
LM_ST_SHARED, LM_FLAG_ANY,
|
|
|
|
&i_gh);
|
|
|
|
if (!error) {
|
|
|
|
error = generic_permission(inode, mask, gfs2_check_acl_locked);
|
|
|
|
gfs2_glock_dq_uninit(&i_gh);
|
|
|
|
}
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int setattr_size(struct inode *inode, struct iattr *attr)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
int error;
|
|
|
|
|
|
|
|
if (attr->ia_size != ip->i_di.di_size) {
|
|
|
|
error = vmtruncate(inode, attr->ia_size);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2006-01-24 18:37:06 +08:00
|
|
|
error = gfs2_truncatei(ip, attr->ia_size);
|
2006-01-17 00:50:04 +08:00
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int setattr_chown(struct inode *inode, struct iattr *attr)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_sbd *sdp = ip->i_sbd;
|
|
|
|
struct buffer_head *dibh;
|
|
|
|
uint32_t ouid, ogid, nuid, ngid;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
ouid = ip->i_di.di_uid;
|
|
|
|
ogid = ip->i_di.di_gid;
|
|
|
|
nuid = attr->ia_uid;
|
|
|
|
ngid = attr->ia_gid;
|
|
|
|
|
|
|
|
if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
|
|
|
|
ouid = nuid = NO_QUOTA_CHANGE;
|
|
|
|
if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
|
|
|
|
ogid = ngid = NO_QUOTA_CHANGE;
|
|
|
|
|
|
|
|
gfs2_alloc_get(ip);
|
|
|
|
|
|
|
|
error = gfs2_quota_lock(ip, nuid, ngid);
|
|
|
|
if (error)
|
|
|
|
goto out_alloc;
|
|
|
|
|
|
|
|
if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
|
|
|
|
error = gfs2_quota_check(ip, nuid, ngid);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock_q;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
|
|
|
|
if (error)
|
|
|
|
goto out_gunlock_q;
|
|
|
|
|
|
|
|
error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
|
if (error)
|
|
|
|
goto out_end_trans;
|
|
|
|
|
|
|
|
error = inode_setattr(inode, attr);
|
|
|
|
gfs2_assert_warn(sdp, !error);
|
|
|
|
gfs2_inode_attr_out(ip);
|
|
|
|
|
2006-01-18 19:19:28 +08:00
|
|
|
gfs2_trans_add_bh(ip->i_gl, dibh, 1);
|
2006-01-17 00:50:04 +08:00
|
|
|
gfs2_dinode_out(&ip->i_di, dibh->b_data);
|
|
|
|
brelse(dibh);
|
|
|
|
|
|
|
|
if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
|
|
|
|
gfs2_quota_change(ip, -ip->i_di.di_blocks,
|
|
|
|
ouid, ogid);
|
|
|
|
gfs2_quota_change(ip, ip->i_di.di_blocks,
|
|
|
|
nuid, ngid);
|
|
|
|
}
|
|
|
|
|
|
|
|
out_end_trans:
|
|
|
|
gfs2_trans_end(sdp);
|
|
|
|
|
|
|
|
out_gunlock_q:
|
|
|
|
gfs2_quota_unlock(ip);
|
|
|
|
|
|
|
|
out_alloc:
|
|
|
|
gfs2_alloc_put(ip);
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_setattr - Change attributes on an inode
|
|
|
|
* @dentry: The dentry which is changing
|
|
|
|
* @attr: The structure describing the change
|
|
|
|
*
|
|
|
|
* The VFS layer wants to change one or more of an inodes attributes. Write
|
|
|
|
* that change out to disk.
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
|
|
|
|
{
|
|
|
|
struct inode *inode = dentry->d_inode;
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_holder i_gh;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
error = -EPERM;
|
|
|
|
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
error = inode_change_ok(inode, attr);
|
|
|
|
if (error)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (attr->ia_valid & ATTR_SIZE)
|
|
|
|
error = setattr_size(inode, attr);
|
|
|
|
else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
|
|
|
|
error = setattr_chown(inode, attr);
|
|
|
|
else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
|
|
|
|
error = gfs2_acl_chmod(ip, attr);
|
|
|
|
else
|
|
|
|
error = gfs2_setattr_simple(ip, attr);
|
|
|
|
|
|
|
|
out:
|
|
|
|
gfs2_glock_dq_uninit(&i_gh);
|
|
|
|
|
|
|
|
if (!error)
|
|
|
|
mark_inode_dirty(inode);
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gfs2_getattr - Read out an inode's attributes
|
|
|
|
* @mnt: ?
|
|
|
|
* @dentry: The dentry to stat
|
|
|
|
* @stat: The inode's stats
|
|
|
|
*
|
|
|
|
* Returns: errno
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
|
|
|
|
struct kstat *stat)
|
|
|
|
{
|
|
|
|
struct inode *inode = dentry->d_inode;
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_holder gh;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
|
|
|
|
if (!error) {
|
|
|
|
generic_fillattr(inode, stat);
|
|
|
|
gfs2_glock_dq_uninit(&gh);
|
|
|
|
}
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int gfs2_setxattr(struct dentry *dentry, const char *name,
|
|
|
|
const void *data, size_t size, int flags)
|
|
|
|
{
|
2006-02-28 06:23:27 +08:00
|
|
|
struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
|
2006-01-17 00:50:04 +08:00
|
|
|
struct gfs2_ea_request er;
|
|
|
|
|
|
|
|
memset(&er, 0, sizeof(struct gfs2_ea_request));
|
|
|
|
er.er_type = gfs2_ea_name2type(name, &er.er_name);
|
|
|
|
if (er.er_type == GFS2_EATYPE_UNUSED)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
er.er_data = (char *)data;
|
|
|
|
er.er_name_len = strlen(er.er_name);
|
|
|
|
er.er_data_len = size;
|
|
|
|
er.er_flags = flags;
|
|
|
|
|
|
|
|
gfs2_assert_warn(ip->i_sbd, !(er.er_flags & GFS2_ERF_MODE));
|
|
|
|
|
|
|
|
return gfs2_ea_set(ip, &er);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
|
|
|
|
void *data, size_t size)
|
|
|
|
{
|
|
|
|
struct gfs2_ea_request er;
|
|
|
|
|
|
|
|
memset(&er, 0, sizeof(struct gfs2_ea_request));
|
|
|
|
er.er_type = gfs2_ea_name2type(name, &er.er_name);
|
|
|
|
if (er.er_type == GFS2_EATYPE_UNUSED)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
er.er_data = data;
|
|
|
|
er.er_name_len = strlen(er.er_name);
|
|
|
|
er.er_data_len = size;
|
|
|
|
|
2006-02-28 06:23:27 +08:00
|
|
|
return gfs2_ea_get(dentry->d_inode->u.generic_ip, &er);
|
2006-01-17 00:50:04 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
|
|
|
|
{
|
|
|
|
struct gfs2_ea_request er;
|
|
|
|
|
|
|
|
memset(&er, 0, sizeof(struct gfs2_ea_request));
|
|
|
|
er.er_data = (size) ? buffer : NULL;
|
|
|
|
er.er_data_len = size;
|
|
|
|
|
2006-02-28 06:23:27 +08:00
|
|
|
return gfs2_ea_list(dentry->d_inode->u.generic_ip, &er);
|
2006-01-17 00:50:04 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static int gfs2_removexattr(struct dentry *dentry, const char *name)
|
|
|
|
{
|
|
|
|
struct gfs2_ea_request er;
|
|
|
|
|
|
|
|
memset(&er, 0, sizeof(struct gfs2_ea_request));
|
|
|
|
er.er_type = gfs2_ea_name2type(name, &er.er_name);
|
|
|
|
if (er.er_type == GFS2_EATYPE_UNUSED)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
er.er_name_len = strlen(er.er_name);
|
|
|
|
|
2006-02-28 06:23:27 +08:00
|
|
|
return gfs2_ea_remove(dentry->d_inode->u.generic_ip, &er);
|
2006-01-17 00:50:04 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
struct inode_operations gfs2_file_iops = {
|
|
|
|
.permission = gfs2_permission,
|
|
|
|
.setattr = gfs2_setattr,
|
|
|
|
.getattr = gfs2_getattr,
|
|
|
|
.setxattr = gfs2_setxattr,
|
|
|
|
.getxattr = gfs2_getxattr,
|
|
|
|
.listxattr = gfs2_listxattr,
|
|
|
|
.removexattr = gfs2_removexattr,
|
|
|
|
};
|
|
|
|
|
|
|
|
struct inode_operations gfs2_dev_iops = {
|
|
|
|
.permission = gfs2_permission,
|
|
|
|
.setattr = gfs2_setattr,
|
|
|
|
.getattr = gfs2_getattr,
|
|
|
|
.setxattr = gfs2_setxattr,
|
|
|
|
.getxattr = gfs2_getxattr,
|
|
|
|
.listxattr = gfs2_listxattr,
|
|
|
|
.removexattr = gfs2_removexattr,
|
|
|
|
};
|
|
|
|
|
|
|
|
struct inode_operations gfs2_dir_iops = {
|
|
|
|
.create = gfs2_create,
|
|
|
|
.lookup = gfs2_lookup,
|
|
|
|
.link = gfs2_link,
|
|
|
|
.unlink = gfs2_unlink,
|
|
|
|
.symlink = gfs2_symlink,
|
|
|
|
.mkdir = gfs2_mkdir,
|
|
|
|
.rmdir = gfs2_rmdir,
|
|
|
|
.mknod = gfs2_mknod,
|
|
|
|
.rename = gfs2_rename,
|
|
|
|
.permission = gfs2_permission,
|
|
|
|
.setattr = gfs2_setattr,
|
|
|
|
.getattr = gfs2_getattr,
|
|
|
|
.setxattr = gfs2_setxattr,
|
|
|
|
.getxattr = gfs2_getxattr,
|
|
|
|
.listxattr = gfs2_listxattr,
|
|
|
|
.removexattr = gfs2_removexattr,
|
|
|
|
};
|
|
|
|
|
|
|
|
struct inode_operations gfs2_symlink_iops = {
|
|
|
|
.readlink = gfs2_readlink,
|
|
|
|
.follow_link = gfs2_follow_link,
|
|
|
|
.permission = gfs2_permission,
|
|
|
|
.setattr = gfs2_setattr,
|
|
|
|
.getattr = gfs2_getattr,
|
|
|
|
.setxattr = gfs2_setxattr,
|
|
|
|
.getxattr = gfs2_getxattr,
|
|
|
|
.listxattr = gfs2_listxattr,
|
|
|
|
.removexattr = gfs2_removexattr,
|
|
|
|
};
|
|
|
|
|