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1 | /*****************************************************************************\ |
2 | * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. | |
3 | * Copyright (C) 2007 The Regents of the University of California. | |
4 | * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). | |
5 | * Written by Brian Behlendorf <behlendorf1@llnl.gov>. | |
6 | * UCRL-CODE-235197 | |
7 | * | |
8 | * This file is part of the SPL, Solaris Porting Layer. | |
9 | * For details, see <http://zfsonlinux.org/>. | |
10 | * | |
11 | * The SPL is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT | |
17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | * for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. | |
23 | ***************************************************************************** | |
24 | * Solaris Porting Layer (SPL) Kobj Implementation. | |
25 | \*****************************************************************************/ | |
26 | ||
27 | #include <sys/kobj.h> | |
28 | ||
29 | struct _buf * | |
30 | kobj_open_file(const char *name) | |
31 | { | |
32 | struct _buf *file; | |
33 | vnode_t *vp; | |
34 | int rc; | |
35 | ||
36 | file = kmalloc(sizeof(_buf_t), kmem_flags_convert(KM_SLEEP)); | |
37 | if (file == NULL) | |
38 | return ((_buf_t *)-1UL); | |
39 | ||
40 | if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0))) { | |
41 | kfree(file); | |
42 | return ((_buf_t *)-1UL); | |
43 | } | |
44 | ||
45 | file->vp = vp; | |
46 | ||
47 | return (file); | |
48 | } /* kobj_open_file() */ | |
49 | EXPORT_SYMBOL(kobj_open_file); | |
50 | ||
51 | void | |
52 | kobj_close_file(struct _buf *file) | |
53 | { | |
54 | VOP_CLOSE(file->vp, 0, 0, 0, 0, 0); | |
55 | kfree(file); | |
56 | } /* kobj_close_file() */ | |
57 | EXPORT_SYMBOL(kobj_close_file); | |
58 | ||
59 | int | |
60 | kobj_read_file(struct _buf *file, char *buf, ssize_t size, offset_t off) | |
61 | { | |
62 | return (vn_rdwr(UIO_READ, file->vp, buf, size, off, | |
63 | UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL)); | |
64 | } /* kobj_read_file() */ | |
65 | EXPORT_SYMBOL(kobj_read_file); | |
66 | ||
67 | int | |
68 | kobj_get_filesize(struct _buf *file, uint64_t *size) | |
69 | { | |
70 | vattr_t vap; | |
71 | int rc; | |
72 | ||
73 | rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL); | |
74 | if (rc) | |
75 | return (rc); | |
76 | ||
77 | *size = vap.va_size; | |
78 | ||
79 | return (rc); | |
80 | } /* kobj_get_filesize() */ | |
81 | EXPORT_SYMBOL(kobj_get_filesize); |