87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
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/*
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*
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* Solaris Porting Layer (SPL) Kobj Implementation.
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*/
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#include <sys/kobj.h>
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struct _buf *
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kobj_open_file(const char *name)
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{
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struct _buf *file;
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vnode_t *vp;
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int rc;
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file = kmalloc(sizeof (_buf_t), kmem_flags_convert(KM_SLEEP));
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if (file == NULL)
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return ((_buf_t *)-1UL);
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if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0))) {
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kfree(file);
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return ((_buf_t *)-1UL);
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}
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file->vp = vp;
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return (file);
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} /* kobj_open_file() */
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EXPORT_SYMBOL(kobj_open_file);
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void
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kobj_close_file(struct _buf *file)
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{
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VOP_CLOSE(file->vp, 0, 0, 0, 0, 0);
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kfree(file);
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} /* kobj_close_file() */
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EXPORT_SYMBOL(kobj_close_file);
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int
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kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off)
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{
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ssize_t resid;
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if (vn_rdwr(UIO_READ, file->vp, buf, size, (offset_t)off,
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UIO_SYSSPACE, 0, 0, 0, &resid) != 0)
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return (-1);
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return (size - resid);
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} /* kobj_read_file() */
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EXPORT_SYMBOL(kobj_read_file);
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int
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kobj_get_filesize(struct _buf *file, uint64_t *size)
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{
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vattr_t vap;
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int rc;
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rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL);
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if (rc)
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return (rc);
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*size = vap.va_size;
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return (rc);
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} /* kobj_get_filesize() */
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EXPORT_SYMBOL(kobj_get_filesize);
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