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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>. | |
715f6251 | 6 | * UCRL-CODE-235197 |
7 | * | |
716154c5 | 8 | * This file is part of the SPL, Solaris Porting Layer. |
3d6af2dd | 9 | * For details, see <http://zfsonlinux.org/>. |
716154c5 BB |
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. | |
715f6251 | 15 | * |
716154c5 | 16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT |
715f6251 | 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 | |
716154c5 BB |
22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
23 | ***************************************************************************** | |
24 | * Solaris Porting Layer (SPL) Kobj Implementation. | |
25 | \*****************************************************************************/ | |
715f6251 | 26 | |
9490c148 | 27 | #include <sys/kobj.h> |
937879f1 | 28 | |
9490c148 | 29 | struct _buf * |
30 | kobj_open_file(const char *name) | |
31 | { | |
32 | struct _buf *file; | |
4b171585 | 33 | vnode_t *vp; |
34 | int rc; | |
9490c148 | 35 | |
54cccfc2 | 36 | file = kmalloc(sizeof(_buf_t), kmem_flags_convert(KM_SLEEP)); |
3bc9d50e | 37 | if (file == NULL) |
8d9a23e8 | 38 | return ((_buf_t *)-1UL); |
9490c148 | 39 | |
3bc9d50e | 40 | if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0))) { |
41 | kfree(file); | |
8d9a23e8 | 42 | return ((_buf_t *)-1UL); |
3bc9d50e | 43 | } |
44 | ||
4b171585 | 45 | file->vp = vp; |
9490c148 | 46 | |
8d9a23e8 | 47 | return (file); |
9490c148 | 48 | } /* kobj_open_file() */ |
49 | EXPORT_SYMBOL(kobj_open_file); | |
50 | ||
51 | void | |
52 | kobj_close_file(struct _buf *file) | |
53 | { | |
4b171585 | 54 | VOP_CLOSE(file->vp, 0, 0, 0, 0, 0); |
4b171585 | 55 | kfree(file); |
9490c148 | 56 | } /* kobj_close_file() */ |
57 | EXPORT_SYMBOL(kobj_close_file); | |
58 | ||
59 | int | |
be29e6a6 | 60 | kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) |
9490c148 | 61 | { |
be29e6a6 RY |
62 | ssize_t resid; |
63 | ||
64 | if (vn_rdwr(UIO_READ, file->vp, buf, size, (offset_t)off, | |
65 | UIO_SYSSPACE, 0, 0, 0, &resid) != 0) | |
66 | return (-1); | |
67 | ||
68 | return (size - resid); | |
9490c148 | 69 | } /* kobj_read_file() */ |
70 | EXPORT_SYMBOL(kobj_read_file); | |
71 | ||
72 | int | |
73 | kobj_get_filesize(struct _buf *file, uint64_t *size) | |
74 | { | |
4b171585 | 75 | vattr_t vap; |
9490c148 | 76 | int rc; |
77 | ||
4b171585 | 78 | rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL); |
9490c148 | 79 | if (rc) |
8d9a23e8 | 80 | return (rc); |
9490c148 | 81 | |
4b171585 | 82 | *size = vap.va_size; |
83 | ||
8d9a23e8 | 84 | return (rc); |
9490c148 | 85 | } /* kobj_get_filesize() */ |
86 | EXPORT_SYMBOL(kobj_get_filesize); |