54 lines
845 B
C
54 lines
845 B
C
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#include "block/rd.h"
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#include "kernel.h"
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ramdisk_t ramdisks[256];
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char rd_refs[256]; //number of references to each ramdisk
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void rd_init()
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{
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}
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int rd_register(byte *ramdisk, u32_t size)
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{
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int i;
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for (i = 0; i < 256; i++)
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{
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if (!rd_refs[i])
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{
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rd_refs[i]++;
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ramdisks[i].start = ramdisk;
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ramdisks[i].size = size;
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return i;
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}
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}
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return -1;
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}
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int rd_remove(minor_t minor)
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{
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if (rd_refs[minor] <= 0)
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return -1;
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rd_refs[minor]--;
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if (!rd_refs[minor])
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free(ramdisks[minor].start);
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}
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int rd_read_block(minor_t minor, u32_t blockNum, u32_t count, byte *buffer)
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{
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if (rd_refs[minor] <= 0)
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return -1;
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byte *copyFrom = ramdisks[minor] + (blockNum << 9);
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if (copyFrom > ramdisks[minor].start + ramdisks[minor].size)
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return -1;
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}
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int rd_write_block(minor_t minor, u32_t blockNum, u32_t count, byte *buffer)
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{
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}
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