1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/*
* File...........: s390-tools/fdasd/fdasd.h
* Author(s)......: Volker Sameske <sameske@de.ibm.com>
* Horst Hummel <Horst.Hummel@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2001-2002
*
* History of changes (starts March 2001)
* version 1.01 - menu entry 's' to show mapping devnode - DS name
* 1.02 - DS names count now from 0001 instead from 0000
* 1.03 - volser checks: 'AA AAA' to 'AAAAA '
* - removed dependency to kernel headers.
* 1.04 - added -p option
* 1.05 - new API policy, set it back to 0
*/
#ifndef FDASD_H
#define FDASD_H
#include <parted/vtoc.h>
/*****************************************************************************
* SECTION: Definitions needed for DASD-API (see dasd.h) *
*****************************************************************************/
#define DASD_IOCTL_LETTER 'D'
#define DASD_PARTN_BITS 2
#define PARTITION_LINUX_SWAP 0x82
#define PARTITION_LINUX 0x83
#define PARTITION_LINUX_EXT 0x85
#define PARTITION_LINUX_LVM 0x8e
#define PARTITION_LINUX_RAID 0xfd
#define PARTITION_LINUX_LVM_OLD 0xfe
#define PART_TYPE_NATIVE "NATIVE"
#define PART_TYPE_SWAP "SWAP "
#define PART_TYPE_RAID "RAID "
#define PART_TYPE_LVM "LVM "
#ifdef DEBUG_DASD
#define PDEBUG fprintf(stderr, "%s:%d:%s\n", \
__FILE__, \
__LINE__, \
__PRETTY_FUNCTION__);
#else
#define PDEBUG
#endif
/*
* struct dasd_information_t
* represents any data about the device, which is visible to userspace.
* including foramt and featueres.
*/
typedef struct dasd_information_t {
unsigned int devno; /* S/390 devno */
unsigned int real_devno; /* for aliases */
unsigned int schid; /* S/390 subchannel identifier */
unsigned int cu_type : 16; /* from SenseID */
unsigned int cu_model : 8; /* from SenseID */
unsigned int dev_type : 16; /* from SenseID */
unsigned int dev_model : 8; /* from SenseID */
unsigned int open_count;
unsigned int req_queue_len;
unsigned int chanq_len; /* length of chanq */
char type[4]; /* from discipline.name, 'none' for */
/* unknown */
unsigned int status; /* current device level */
unsigned int label_block; /* where to find the VOLSER */
unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
unsigned int characteristics_size;
unsigned int confdata_size;
char characteristics[64]; /* from read_device_characteristics */
char configuration_data[256]; /* from read_configuration_data */
} dasd_information_t;
/*
* struct format_data_t
* represents all data necessary to format a dasd
*/
typedef struct format_data_t {
int start_unit; /* from track */
int stop_unit; /* to track */
int blksize; /* sectorsize */
int intensity;
} format_data_t;
/*
* values to be used for format_data_t.intensity
* 0/8: normal format
* 1/9: also write record zero
* 3/11: also write home address
* 4/12: invalidate track
*/
#define DASD_FMT_INT_FMT_R0 1 /* write record zero */
#define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */
#define DASD_FMT_INT_INVAL 4 /* invalidate tracks */
#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */
/* Disable the volume (for Linux) */
#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0)
/* Enable the volume (for Linux) */
#define BIODASDENABLE _IO(DASD_IOCTL_LETTER,1)
/* retrieve API version number */
#define DASDAPIVER _IOR(DASD_IOCTL_LETTER,0,int)
/* Get information on a dasd device (enhanced) */
#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
/*****************************************************************************
* SECTION: Further IOCTL Definitions (see fs.h) *
*****************************************************************************/
/* re-read partition table */
#define BLKRRPART _IO(0x12,95)
/* get block device sector size */
#define BLKSSZGET _IO(0x12,104)
/*****************************************************************************
* SECTION: Definition from hdreq.h *
*****************************************************************************/
struct fdasd_hd_geometry {
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
unsigned long start;
};
/* get device geometry */
#define HDIO_GETGEO 0x0301
/*****************************************************************************
* SECTION: FDASD internal types *
*****************************************************************************/
#define DASD_MIN_API_VERSION 0
#define DEFAULT_FDASD_CONF "/etc/fdasd.conf" /* default config file */
#define PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
#define USABLE_PARTITIONS ((1 << DASD_PARTN_BITS) - 1)
#define FDASD_VERSION "1.05"
#define DEVICE "device"
#define DISC "disc"
#define PART "part"
#define ALTERNATE_CYLINDERS_USED 0x10
typedef struct partition_info {
u_int8_t used;
unsigned long start_trk;
unsigned long end_trk;
unsigned long len_trk;
unsigned long fspace_trk;
format1_label_t *f1;
struct partition_info *next;
struct partition_info *prev;
u_int8_t type;
} partition_info_t;
typedef struct config_data {
unsigned long start;
unsigned long stop;
} config_data_t;
typedef struct fdasd_anchor {
int vlabel_changed;
int vtoc_changed;
int devname_specified;
int volid_specified;
int config_specified;
int auto_partition;
int print_table;
int big_disk;
int silent;
int verbose;
int devno;
int option_reuse;
int option_recreate;
int partno[USABLE_PARTITIONS];
u_int16_t dev_type;
unsigned int used_partitions;
unsigned long label_pos;
unsigned int blksize;
unsigned long fspace_trk;
format4_label_t *f4;
format5_label_t *f5;
format7_label_t *f7;
partition_info_t *first;
partition_info_t *last;
volume_label_t *vlabel;
config_data_t confdata[USABLE_PARTITIONS];
struct fdasd_hd_geometry geo;
} fdasd_anchor_t;
enum offset {lower, upper};
enum fdasd_failure {
unable_to_open_disk,
unable_to_seek_disk,
unable_to_read_disk,
read_only_disk,
unable_to_ioctl,
api_version_mismatch,
wrong_disk_type,
wrong_disk_format,
disk_in_use,
config_syntax_error,
vlabel_corrupted,
dsname_corrupted,
malloc_failed,
device_verification_failed
};
void fdasd_cleanup (fdasd_anchor_t *anchor);
void fdasd_initialize_anchor (fdasd_anchor_t * anc);
void fdasd_get_geometry (const PedDevice *dev, fdasd_anchor_t *anc, int fd);
void fdasd_check_api_version (fdasd_anchor_t *anc, int fd);
int fdasd_check_volume (fdasd_anchor_t *anc, int fd);
int fdasd_write_labels (fdasd_anchor_t *anc, int fd);
int fdasd_invalid_vtoc_pointer(fdasd_anchor_t *anc);
void fdasd_recreate_vtoc(fdasd_anchor_t *anc);
partition_info_t * fdasd_add_partition (fdasd_anchor_t *anc,
unsigned int start, unsigned int stop);
int fdasd_prepare_labels (fdasd_anchor_t *anc, int fd) ;
#endif /* FDASD_H */
|
