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/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL 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; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************
* Solaris Porting Layer (SPL) Kobj Implementation.
\*****************************************************************************/
#include <sys/kobj.h>
#include <spl-debug.h>
#ifdef SS_DEBUG_SUBSYS
#undef SS_DEBUG_SUBSYS
#endif
#define SS_DEBUG_SUBSYS SS_KOBJ
struct _buf *
kobj_open_file(const char *name)
{
struct _buf *file;
vnode_t *vp;
int rc;
SENTRY;
file = kmalloc(sizeof(_buf_t), GFP_KERNEL);
if (file == NULL)
SRETURN((_buf_t *)-1UL);
if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0))) {
kfree(file);
SRETURN((_buf_t *)-1UL);
}
file->vp = vp;
SRETURN(file);
} /* kobj_open_file() */
EXPORT_SYMBOL(kobj_open_file);
void
kobj_close_file(struct _buf *file)
{
SENTRY;
VOP_CLOSE(file->vp, 0, 0, 0, 0, 0);
kfree(file);
SEXIT;
} /* kobj_close_file() */
EXPORT_SYMBOL(kobj_close_file);
int
kobj_read_file(struct _buf *file, char *buf, ssize_t size, offset_t off)
{
SENTRY;
SRETURN(vn_rdwr(UIO_READ, file->vp, buf, size, off,
UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL));
} /* kobj_read_file() */
EXPORT_SYMBOL(kobj_read_file);
int
kobj_get_filesize(struct _buf *file, uint64_t *size)
{
vattr_t vap;
int rc;
SENTRY;
rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL);
if (rc)
SRETURN(rc);
*size = vap.va_size;
SRETURN(rc);
} /* kobj_get_filesize() */
EXPORT_SYMBOL(kobj_get_filesize);
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