Blame view
block/partitions/mac.c
3.52 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 5 6 7 |
/* * fs/partitions/mac.c * * Code extracted from drivers/block/genhd.c * Copyright (C) 1991-1998 Linus Torvalds * Re-organised Feb 1998 Russell King */ |
1da177e4c Linux-2.6.12-rc2 |
8 9 10 11 12 |
#include <linux/ctype.h> #include "check.h" #include "mac.h" #ifdef CONFIG_PPC_PMAC |
e8222502e [PATCH] powerpc: ... |
13 |
#include <asm/machdep.h> |
1da177e4c Linux-2.6.12-rc2 |
14 15 16 17 18 19 20 21 22 23 24 25 26 27 |
extern void note_bootable_part(dev_t dev, int part, int goodness); #endif /* * Code to understand MacOS partition tables. */ static inline void mac_fix_string(char *stg, int len) { int i; for (i = len - 1; i >= 0 && stg[i] == ' '; i--) stg[i] = 0; } |
1493bf217 block: use struct... |
28 |
int mac_partition(struct parsed_partitions *state) |
1da177e4c Linux-2.6.12-rc2 |
29 |
{ |
1da177e4c Linux-2.6.12-rc2 |
30 31 |
Sector sect; unsigned char *data; |
fa7ea87a0 fs/partitions: Va... |
32 |
int slot, blocks_in_map; |
02e2a5bfe mac: validate mac... |
33 |
unsigned secsize, datasize, partoffset; |
1da177e4c Linux-2.6.12-rc2 |
34 35 36 37 38 39 40 41 |
#ifdef CONFIG_PPC_PMAC int found_root = 0; int found_root_goodness = 0; #endif struct mac_partition *part; struct mac_driver_desc *md; /* Get 0th block and look at the first partition map entry. */ |
1493bf217 block: use struct... |
42 |
md = read_part_sector(state, 0, §); |
1da177e4c Linux-2.6.12-rc2 |
43 44 45 46 47 48 49 50 |
if (!md) return -1; if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC) { put_dev_sector(sect); return 0; } secsize = be16_to_cpu(md->block_size); put_dev_sector(sect); |
02e2a5bfe mac: validate mac... |
51 52 |
datasize = round_down(secsize, 512); data = read_part_sector(state, datasize / 512, §); |
1da177e4c Linux-2.6.12-rc2 |
53 54 |
if (!data) return -1; |
02e2a5bfe mac: validate mac... |
55 56 57 58 |
partoffset = secsize % 512; if (partoffset + sizeof(*part) > datasize) return -1; part = (struct mac_partition *) (data + partoffset); |
1da177e4c Linux-2.6.12-rc2 |
59 60 61 62 |
if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC) { put_dev_sector(sect); return 0; /* not a MacOS disk */ } |
1da177e4c Linux-2.6.12-rc2 |
63 |
blocks_in_map = be32_to_cpu(part->map_count); |
fa7ea87a0 fs/partitions: Va... |
64 65 66 67 |
if (blocks_in_map < 0 || blocks_in_map >= DISK_MAX_PARTS) { put_dev_sector(sect); return 0; } |
06004e6ee block/partitions/... |
68 69 70 |
if (blocks_in_map >= state->limit) blocks_in_map = state->limit - 1; |
fa7ea87a0 fs/partitions: Va... |
71 72 73 |
strlcat(state->pp_buf, " [mac]", PAGE_SIZE); for (slot = 1; slot <= blocks_in_map; ++slot) { int pos = slot * secsize; |
1da177e4c Linux-2.6.12-rc2 |
74 |
put_dev_sector(sect); |
1493bf217 block: use struct... |
75 |
data = read_part_sector(state, pos/512, §); |
1da177e4c Linux-2.6.12-rc2 |
76 77 78 79 80 81 82 83 |
if (!data) return -1; part = (struct mac_partition *) (data + pos%512); if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC) break; put_partition(state, slot, be32_to_cpu(part->start_block) * (secsize/512), be32_to_cpu(part->block_count) * (secsize/512)); |
582940508 block: Replace st... |
84 |
if (!strncasecmp(part->type, "Linux_RAID", 10)) |
cc9106247 fs/partitions: us... |
85 |
state->parts[slot].flags = ADDPART_FLAG_RAID; |
1da177e4c Linux-2.6.12-rc2 |
86 87 88 89 90 |
#ifdef CONFIG_PPC_PMAC /* * If this is the first bootable partition, tell the * setup code, in case it wants to make this the root. */ |
e8222502e [PATCH] powerpc: ... |
91 |
if (machine_is(powermac)) { |
1da177e4c Linux-2.6.12-rc2 |
92 93 94 95 96 97 98 99 100 101 102 |
int goodness = 0; mac_fix_string(part->processor, 16); mac_fix_string(part->name, 32); mac_fix_string(part->type, 32); if ((be32_to_cpu(part->status) & MAC_STATUS_BOOTABLE) && strcasecmp(part->processor, "powerpc") == 0) goodness++; if (strcasecmp(part->type, "Apple_UNIX_SVR2") == 0 |
582940508 block: Replace st... |
103 |
|| (strncasecmp(part->type, "Linux", 5) == 0 |
1da177e4c Linux-2.6.12-rc2 |
104 105 106 107 108 109 110 111 |
&& strcasecmp(part->type, "Linux_swap") != 0)) { int i, l; goodness++; l = strlen(part->name); if (strcmp(part->name, "/") == 0) goodness++; for (i = 0; i <= l - 4; ++i) { |
582940508 block: Replace st... |
112 |
if (strncasecmp(part->name + i, "root", |
1da177e4c Linux-2.6.12-rc2 |
113 114 115 116 117 |
4) == 0) { goodness += 2; break; } } |
582940508 block: Replace st... |
118 |
if (strncasecmp(part->name, "swap", 4) == 0) |
1da177e4c Linux-2.6.12-rc2 |
119 120 121 122 |
goodness--; } if (goodness > found_root_goodness) { |
fa7ea87a0 fs/partitions: Va... |
123 |
found_root = slot; |
1da177e4c Linux-2.6.12-rc2 |
124 125 126 127 |
found_root_goodness = goodness; } } #endif /* CONFIG_PPC_PMAC */ |
1da177e4c Linux-2.6.12-rc2 |
128 129 130 |
} #ifdef CONFIG_PPC_PMAC if (found_root_goodness) |
1493bf217 block: use struct... |
131 132 |
note_bootable_part(state->bdev->bd_dev, found_root, found_root_goodness); |
1da177e4c Linux-2.6.12-rc2 |
133 134 135 |
#endif put_dev_sector(sect); |
9c867fbe0 partitions: fix s... |
136 137 |
strlcat(state->pp_buf, " ", PAGE_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
138 139 |
return 1; } |