| /* |
| * 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> |
| |
| struct _buf * |
| kobj_open_file(const char *name) |
| { |
| struct _buf *file; |
| vnode_t *vp; |
| int rc; |
| |
| file = kmalloc(sizeof (_buf_t), kmem_flags_convert(KM_SLEEP)); |
| if (file == NULL) |
| return ((_buf_t *)-1UL); |
| |
| if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0))) { |
| kfree(file); |
| return ((_buf_t *)-1UL); |
| } |
| |
| file->vp = vp; |
| |
| return (file); |
| } /* kobj_open_file() */ |
| EXPORT_SYMBOL(kobj_open_file); |
| |
| void |
| kobj_close_file(struct _buf *file) |
| { |
| VOP_CLOSE(file->vp, 0, 0, 0, 0, 0); |
| kfree(file); |
| } /* kobj_close_file() */ |
| EXPORT_SYMBOL(kobj_close_file); |
| |
| int |
| kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) |
| { |
| ssize_t resid; |
| |
| if (vn_rdwr(UIO_READ, file->vp, buf, size, (offset_t)off, |
| UIO_SYSSPACE, 0, 0, 0, &resid) != 0) |
| return (-1); |
| |
| return (size - resid); |
| } /* kobj_read_file() */ |
| EXPORT_SYMBOL(kobj_read_file); |
| |
| int |
| kobj_get_filesize(struct _buf *file, uint64_t *size) |
| { |
| vattr_t vap; |
| int rc; |
| |
| rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL); |
| if (rc) |
| return (rc); |
| |
| *size = vap.va_size; |
| |
| return (rc); |
| } /* kobj_get_filesize() */ |
| EXPORT_SYMBOL(kobj_get_filesize); |