d1d7e2689d
The vast majority of these changes are in Linux specific code. They are the result of not having an automated style checker to validate the code when it was originally written. Others were caused when the common code was slightly adjusted for Linux. This patch contains no functional changes. It only refreshes the code to conform to style guide. Everyone submitting patches for inclusion upstream should now run 'make checkstyle' and resolve any warning prior to opening a pull request. The automated builders have been updated to fail a build if when 'make checkstyle' detects an issue. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1821
149 lines
3.4 KiB
C
149 lines
3.4 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright (c) 2011 Gunnar Beutner
|
|
* Copyright (c) 2012 Cyril Plisko. All rights reserved.
|
|
*/
|
|
|
|
|
|
#include <sys/zfs_vnops.h>
|
|
#include <sys/zfs_znode.h>
|
|
#include <sys/zfs_ctldir.h>
|
|
#include <sys/zpl.h>
|
|
|
|
|
|
static int
|
|
#ifdef HAVE_ENCODE_FH_WITH_INODE
|
|
zpl_encode_fh(struct inode *ip, __u32 *fh, int *max_len, struct inode *parent)
|
|
{
|
|
#else
|
|
zpl_encode_fh(struct dentry *dentry, __u32 *fh, int *max_len, int connectable)
|
|
{
|
|
struct inode *ip = dentry->d_inode;
|
|
#endif /* HAVE_ENCODE_FH_WITH_INODE */
|
|
fid_t *fid = (fid_t *)fh;
|
|
int len_bytes, rc;
|
|
|
|
len_bytes = *max_len * sizeof (__u32);
|
|
|
|
if (len_bytes < offsetof(fid_t, fid_data))
|
|
return (255);
|
|
|
|
fid->fid_len = len_bytes - offsetof(fid_t, fid_data);
|
|
|
|
if (zfsctl_is_node(ip))
|
|
rc = zfsctl_fid(ip, fid);
|
|
else
|
|
rc = zfs_fid(ip, fid);
|
|
|
|
len_bytes = offsetof(fid_t, fid_data) + fid->fid_len;
|
|
*max_len = roundup(len_bytes, sizeof (__u32)) / sizeof (__u32);
|
|
|
|
return (rc == 0 ? FILEID_INO32_GEN : 255);
|
|
}
|
|
|
|
static struct dentry *
|
|
zpl_dentry_obtain_alias(struct inode *ip)
|
|
{
|
|
struct dentry *result;
|
|
|
|
#ifdef HAVE_D_OBTAIN_ALIAS
|
|
result = d_obtain_alias(ip);
|
|
#else
|
|
result = d_alloc_anon(ip);
|
|
|
|
if (result == NULL) {
|
|
iput(ip);
|
|
result = ERR_PTR(-ENOMEM);
|
|
}
|
|
#endif /* HAVE_D_OBTAIN_ALIAS */
|
|
|
|
return (result);
|
|
}
|
|
|
|
static struct dentry *
|
|
zpl_fh_to_dentry(struct super_block *sb, struct fid *fh,
|
|
int fh_len, int fh_type)
|
|
{
|
|
fid_t *fid = (fid_t *)fh;
|
|
struct inode *ip;
|
|
int len_bytes, rc;
|
|
|
|
len_bytes = fh_len * sizeof (__u32);
|
|
|
|
if (fh_type != FILEID_INO32_GEN ||
|
|
len_bytes < offsetof(fid_t, fid_data) ||
|
|
len_bytes < offsetof(fid_t, fid_data) + fid->fid_len)
|
|
return (ERR_PTR(-EINVAL));
|
|
|
|
rc = zfs_vget(sb, &ip, fid);
|
|
|
|
if (rc != 0)
|
|
return (ERR_PTR(-rc));
|
|
|
|
ASSERT((ip != NULL) && !IS_ERR(ip));
|
|
|
|
return (zpl_dentry_obtain_alias(ip));
|
|
}
|
|
|
|
static struct dentry *
|
|
zpl_get_parent(struct dentry *child)
|
|
{
|
|
cred_t *cr = CRED();
|
|
struct inode *ip;
|
|
int error;
|
|
|
|
crhold(cr);
|
|
error = -zfs_lookup(child->d_inode, "..", &ip, 0, cr, NULL, NULL);
|
|
crfree(cr);
|
|
ASSERT3S(error, <=, 0);
|
|
|
|
if (error)
|
|
return (ERR_PTR(error));
|
|
|
|
return (zpl_dentry_obtain_alias(ip));
|
|
}
|
|
|
|
#ifdef HAVE_COMMIT_METADATA
|
|
static int
|
|
zpl_commit_metadata(struct inode *inode)
|
|
{
|
|
cred_t *cr = CRED();
|
|
int error;
|
|
|
|
crhold(cr);
|
|
error = -zfs_fsync(inode, 0, cr);
|
|
crfree(cr);
|
|
ASSERT3S(error, <=, 0);
|
|
|
|
return (error);
|
|
}
|
|
#endif /* HAVE_COMMIT_METADATA */
|
|
|
|
const struct export_operations zpl_export_operations = {
|
|
.encode_fh = zpl_encode_fh,
|
|
.fh_to_dentry = zpl_fh_to_dentry,
|
|
.get_parent = zpl_get_parent,
|
|
#ifdef HAVE_COMMIT_METADATA
|
|
.commit_metadata = zpl_commit_metadata,
|
|
#endif /* HAVE_COMMIT_METADATA */
|
|
};
|