configure: add gettid() test
[fio.git] / oslib / libmtd_int.h
CommitLineData
94e9e396
DE
1/*
2 * Copyright (c) International Business Machines Corp., 2006
3 * Copyright (C) 2009 Nokia Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
fa07eaa6 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
94e9e396
DE
18 *
19 * Author: Artem Bityutskiy
20 *
21 * MTD library.
22 */
23
24/* Imported from mtd-utils by dehrenberg */
25
26#ifndef __LIBMTD_INT_H__
27#define __LIBMTD_INT_H__
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
33#define PROGRAM_NAME "libmtd"
34
35#define SYSFS_MTD "class/mtd"
36#define MTD_NAME_PATT "mtd%d"
37#define MTD_DEV "dev"
38#define MTD_NAME "name"
39#define MTD_TYPE "type"
40#define MTD_EB_SIZE "erasesize"
41#define MTD_SIZE "size"
42#define MTD_MIN_IO_SIZE "writesize"
43#define MTD_SUBPAGE_SIZE "subpagesize"
44#define MTD_OOB_SIZE "oobsize"
45#define MTD_REGION_CNT "numeraseregions"
46#define MTD_FLAGS "flags"
47
48#define OFFS64_IOCTLS_UNKNOWN 0
49#define OFFS64_IOCTLS_NOT_SUPPORTED 1
50#define OFFS64_IOCTLS_SUPPORTED 2
51
52/**
53 * libmtd - MTD library description data structure.
54 * @sysfs_mtd: MTD directory in sysfs
55 * @mtd: MTD device sysfs directory pattern
56 * @mtd_dev: MTD device major/minor numbers file pattern
57 * @mtd_name: MTD device name file pattern
58 * @mtd_type: MTD device type file pattern
59 * @mtd_eb_size: MTD device eraseblock size file pattern
60 * @mtd_size: MTD device size file pattern
61 * @mtd_min_io_size: minimum I/O unit size file pattern
62 * @mtd_subpage_size: sub-page size file pattern
63 * @mtd_oob_size: MTD device OOB size file pattern
64 * @mtd_region_cnt: count of additional erase regions file pattern
65 * @mtd_flags: MTD device flags file pattern
66 * @sysfs_supported: non-zero if sysfs is supported by MTD
67 * @offs64_ioctls: %OFFS64_IOCTLS_SUPPORTED if 64-bit %MEMERASE64,
68 * %MEMREADOOB64, %MEMWRITEOOB64 MTD device ioctls are
69 * supported, %OFFS64_IOCTLS_NOT_SUPPORTED if not, and
70 * %OFFS64_IOCTLS_UNKNOWN if it is not known yet;
71 *
72 * Note, we cannot find out whether 64-bit ioctls are supported by MTD when we
73 * are initializing the library, because this requires an MTD device node.
74 * Indeed, we have to actually call the ioctl and check for %ENOTTY to find
75 * out whether it is supported or not.
76 *
77 * Thus, we leave %offs64_ioctls uninitialized in 'libmtd_open()', and
78 * initialize it later, when corresponding libmtd function is used, and when
79 * we actually have a device node and can invoke an ioctl command on it.
80 */
81struct libmtd
82{
83 char *sysfs_mtd;
84 char *mtd;
85 char *mtd_dev;
86 char *mtd_name;
87 char *mtd_type;
88 char *mtd_eb_size;
89 char *mtd_size;
90 char *mtd_min_io_size;
91 char *mtd_subpage_size;
92 char *mtd_oob_size;
93 char *mtd_region_cnt;
94 char *mtd_flags;
95 unsigned int sysfs_supported:1;
96 unsigned int offs64_ioctls:2;
97};
98
99int legacy_libmtd_open(void);
100int legacy_dev_present(int mtd_num);
101int legacy_mtd_get_info(struct mtd_info *info);
102int legacy_get_dev_info(const char *node, struct mtd_dev_info *mtd);
103int legacy_get_dev_info1(int dev_num, struct mtd_dev_info *mtd);
104
105#ifdef __cplusplus
106}
107#endif
108
109#endif /* !__LIBMTD_INT_H__ */