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AdminSpaceContainer
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AdminSpaceContainers are used to store the location and bitmap of each administration space. The AdminSpaceContainers are located
in a double linked list and they contain an array of fsAdminSpace structures. There
is one fsAdminSpace structure for every administration space on disk.
| Field |
Type |
Description |
| bheader |
struct fsBlockHeader |
Standard block header. |
| next |
BLCK |
The next AdminSpaceContainer, or zero if it is the last in the chain. |
| previous |
BLCK |
The previous AdminSpaceContainer, or zero if it is the first
AdminSpaceContainer. |
| bits |
UBYTE |
The number of bits in each in the bits ULONG in the fsAdminSpace
structure. |
| pad1 |
UBYTE |
Reserved, leave zero. |
| pad2 |
UWORD |
Reserved, leave zero. |
| adminspace |
struct fsAdminSpace |
An array of fsAdminSpace structures. The size of the array is
determined by the current blocksize. |
struct fsAdminSpaceContainer {
struct fsBlockHeader bheader;
BLCK next;
BLCK previous;
UBYTE bits;
UBYTE pad1;
UWORD pad2;
struct fsAdminSpace adminspace[0];
};
| Field |
Type |
Description |
| space |
BLCK |
The first block of an administration space. |
| bits |
ULONG |
A small bitmap which is used to determine which blocks in an
administration space are already in use. The number of bits in this bitmap is
determined by the bits field in the AdminSpaceContainer. |
struct fsAdminSpace {
BLCK space;
ULONG bits;
};
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