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Made the module name compatible with the userland module loader - it requires

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the file path to be part of the module name (that's not the case for BeOS, is it?).
Also added some more debug output, and now only allocate a new rigid_disk_block
if we are going to need it.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4441 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2003-09-02 03:11:30 +00:00
parent 91b4829872
commit da1a45d3c0
1 changed files with 23 additions and 15 deletions
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38
src/add-ons/kernel/partitioning_systems/amiga/amiga_rdb.cpp
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@ -24,7 +24,7 @@
#endif
static const char *kPartitionModuleName = "partitioning_systems/amiga/rdb/v1";
static const char *kPartitionModuleName = "partitioning_systems/amiga_rdb/v1";
#if TRACE_AMIGA_RDB
static char *
@ -69,18 +69,21 @@ get_next_partition(int fd, rigid_disk_block &rdb, uint32 &cookie, partition_bloc
bool
search_rdb(int fd, rigid_disk_block *_rdb)
search_rdb(int fd, rigid_disk_block **_rdb)
{
rigid_disk_block *rdb;
uint8 buffer[512];
TRACE(("search_rdb()\n"));
for (int32 sector = 0; sector < RDB_LOCATION_LIMIT; sector++) {
ssize_t bytesRead = read(fd, buffer, sizeof(buffer));
if (bytesRead < (ssize_t)sizeof(buffer))
uint8 buffer[512];
ssize_t bytesRead = read_pos(fd, sector * 512, buffer, sizeof(buffer));
if (bytesRead < (ssize_t)sizeof(buffer)) {
TRACE(("search_rdb: read error: %ld\n", bytesRead));
return false;
}
rdb = (rigid_disk_block *)buffer;
if (rdb->id == RDB_DISK_ID && rdb->summed_longs == sizeof(rigid_disk_block) / sizeof(uint32)) {
rigid_disk_block *rdb = (rigid_disk_block *)buffer;
if (rdb->id == RDB_DISK_ID
&& rdb->summed_longs == sizeof(rigid_disk_block) / sizeof(uint32)) {
// check checksum
uint32 *longs = (uint32 *)buffer;
uint32 sum = 0;
@ -88,11 +91,15 @@ search_rdb(int fd, rigid_disk_block *_rdb)
sum += longs[i];
if (sum != 0) {
TRACE(("amiga_rdb: check sum is incorrect!\n"));
TRACE(("search_rdb: check sum is incorrect!\n"));
return false;
}
*_rdb = *rdb;
// copy the RDB to a new piece of memory
rdb = new rigid_disk_block();
memcpy(rdb, buffer, sizeof(rigid_disk_block));
*_rdb = rdb;
return true;
}
}
@ -121,12 +128,13 @@ amiga_rdb_std_ops(int32 op, ...)
static float
amiga_rdb_identify_partition(int fd, partition_data *partition, void **_cookie)
{
rigid_disk_block *rdb = new rigid_disk_block();
if (!search_rdb(fd, rdb)) {
delete rdb;
return B_ERROR;
}
TRACE(("amiga_rdb_identify_partition()\n"));
rigid_disk_block *rdb;
if (!search_rdb(fd, &rdb))
return B_ERROR;
TRACE(("amiga_rdb: found rdb!\n"));
*_cookie = (void *)rdb;
return 0.5f;
}