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--- old/grub/grub-core/partmap/sun.c
+++ new/grub/grub-core/partmap/sun.c
1 1 /* sun.c - Read SUN style partition tables. */
2 2 /*
3 3 * GRUB -- GRand Unified Bootloader
4 4 * Copyright (C) 2002,2005,2006,2007 Free Software Foundation, Inc.
5 5 *
6 6 * GRUB is free software: you can redistribute it and/or modify
7 7 * it under the terms of the GNU General Public License as published by
8 8 * the Free Software Foundation, either version 3 of the License, or
9 9 * (at your option) any later version.
10 10 *
11 11 * GRUB is distributed in the hope that it will be useful,
12 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 14 * GNU General Public License for more details.
15 15 *
16 16 * You should have received a copy of the GNU General Public License
17 17 * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
18 18 */
19 19
20 20 #include <grub/partition.h>
21 21 #include <grub/disk.h>
22 22 #include <grub/mm.h>
23 23 #include <grub/misc.h>
24 24 #include <grub/dl.h>
25 25 #include <grub/symbol.h>
26 26 #include <grub/types.h>
27 27 #include <grub/err.h>
28 28
29 29 GRUB_MOD_LICENSE ("GPLv3+");
30 30
31 31 #define GRUB_PARTMAP_SUN_MAGIC 0xDABE
32 32 #define GRUB_PARTMAP_SUN_MAX_PARTS 8
33 33 #define GRUB_PARTMAP_SUN_WHOLE_DISK_ID 0x05
34 34
35 35 struct grub_sun_partition_info
36 36 {
37 37 grub_uint8_t spare1;
38 38 grub_uint8_t id;
39 39 grub_uint8_t spare2;
40 40 grub_uint8_t flags;
41 41 } __attribute__ ((packed));
42 42
43 43 struct grub_sun_partition_descriptor
44 44 {
45 45 grub_uint32_t start_cylinder;
46 46 grub_uint32_t num_sectors;
47 47 } __attribute__ ((packed));
48 48
49 49 struct grub_sun_block
50 50 {
51 51 grub_uint8_t info[128]; /* Informative text string. */
52 52 grub_uint8_t spare0[14];
53 53 struct grub_sun_partition_info infos[8];
54 54 grub_uint8_t spare1[246]; /* Boot information etc. */
55 55 grub_uint16_t rspeed; /* Disk rotational speed. */
56 56 grub_uint16_t pcylcount; /* Physical cylinder count. */
57 57 grub_uint16_t sparecyl; /* extra sects per cylinder. */
58 58 grub_uint8_t spare2[4]; /* More magic... */
59 59 grub_uint16_t ilfact; /* Interleave factor. */
60 60 grub_uint16_t ncyl; /* Data cylinder count. */
61 61 grub_uint16_t nacyl; /* Alt. cylinder count. */
62 62 grub_uint16_t ntrks; /* Tracks per cylinder. */
63 63 grub_uint16_t nsect; /* Sectors per track. */
64 64 grub_uint8_t spare3[4]; /* Even more magic... */
65 65 struct grub_sun_partition_descriptor partitions[8];
66 66 grub_uint16_t magic; /* Magic number. */
67 67 grub_uint16_t csum; /* Label xor'd checksum. */
68 68 } __attribute__ ((packed));
69 69
70 70 static struct grub_partition_map grub_sun_partition_map;
71 71
72 72 /* Verify checksum (true=ok). */
73 73 static int
74 74 grub_sun_is_valid (grub_uint16_t *label)
75 75 {
76 76 grub_uint16_t *pos;
77 77 grub_uint16_t sum = 0;
78 78
79 79 for (pos = label;
80 80 pos < (label + sizeof (struct grub_sun_block) / 2);
81 81 pos++)
82 82 sum ^= *pos;
83 83
84 84 return ! sum;
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85 85 }
86 86
87 87 static grub_err_t
88 88 sun_partition_map_iterate (grub_disk_t disk,
89 89 int (*hook) (grub_disk_t disk,
90 90 const grub_partition_t partition))
91 91 {
92 92 struct grub_partition p;
93 93 union
94 94 {
95 - struct grub_sun_block sun;
95 + struct grub_sun_block sunb;
96 96 grub_uint16_t raw[0];
97 97 } block;
98 98 int partnum;
99 99 grub_err_t err;
100 100
101 101 p.partmap = &grub_sun_partition_map;
102 102 err = grub_disk_read (disk, 0, 0, sizeof (struct grub_sun_block),
103 103 &block);
104 104 if (err)
105 105 return err;
106 106
107 - if (GRUB_PARTMAP_SUN_MAGIC != grub_be_to_cpu16 (block.sun.magic))
107 + if (GRUB_PARTMAP_SUN_MAGIC != grub_be_to_cpu16 (block.sunb.magic))
108 108 return grub_error (GRUB_ERR_BAD_PART_TABLE, "not a sun partition table");
109 109
110 110 if (! grub_sun_is_valid (block.raw))
111 111 return grub_error (GRUB_ERR_BAD_PART_TABLE, "invalid checksum");
112 112
113 113 /* Maybe another error value would be better, because partition
114 114 table _is_ recognized but invalid. */
115 115 for (partnum = 0; partnum < GRUB_PARTMAP_SUN_MAX_PARTS; partnum++)
116 116 {
117 117 struct grub_sun_partition_descriptor *desc;
118 118
119 - if (block.sun.infos[partnum].id == 0
120 - || block.sun.infos[partnum].id == GRUB_PARTMAP_SUN_WHOLE_DISK_ID)
119 + if (block.sunb.infos[partnum].id == 0
120 + || block.sunb.infos[partnum].id == GRUB_PARTMAP_SUN_WHOLE_DISK_ID)
121 121 continue;
122 122
123 - desc = &block.sun.partitions[partnum];
123 + desc = &block.sunb.partitions[partnum];
124 124 p.start = ((grub_uint64_t) grub_be_to_cpu32 (desc->start_cylinder)
125 - * grub_be_to_cpu16 (block.sun.ntrks)
126 - * grub_be_to_cpu16 (block.sun.nsect));
125 + * grub_be_to_cpu16 (block.sunb.ntrks)
126 + * grub_be_to_cpu16 (block.sunb.nsect));
127 127 p.len = grub_be_to_cpu32 (desc->num_sectors);
128 128 p.number = p.index = partnum;
129 129 if (p.len)
130 130 {
131 131 if (hook (disk, &p))
132 132 partnum = GRUB_PARTMAP_SUN_MAX_PARTS;
133 133 }
134 134 }
135 135
136 136 return grub_errno;
137 137 }
138 138
139 139 /* Partition map type. */
140 140 static struct grub_partition_map grub_sun_partition_map =
141 141 {
142 142 .name = "sun",
143 143 .iterate = sun_partition_map_iterate,
144 144 };
145 145
146 146 GRUB_MOD_INIT(part_sun)
147 147 {
148 148 grub_partition_map_register (&grub_sun_partition_map);
149 149 }
150 150
151 151 GRUB_MOD_FINI(part_sun)
152 152 {
153 153 grub_partition_map_unregister (&grub_sun_partition_map);
154 154 }
155 155
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