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Import backup from 2004-12-24

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josh committed 2017-07-25 22:23:49 -04:00
1 parent b40a68f581
commit 51948ce081
8 files changed
+133 -74
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kernel/block/ramdisk.c
+2 -2
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@@ -80,7 +80,7 @@ int ramdisk_block_read(minor_t minor, u32_t blockNum, u32_t count, void *buffer)
if ((blockNum << BLOCK_SIZE_LOG) >= ramdisks[minor]->size)
return -2;
void *rdAddr = ramdisks[minor]->start + (blockNum << BLOCK_SIZE_LOG);
u32_t copyLen = min(count << BLOCK_SIZE_LOG, ramdisks[minor]->size - (u32_t)rdAddr);
u32_t copyLen = min(count << BLOCK_SIZE_LOG, ramdisks[minor]->size + (u32_t)ramdisks[minor]->start - (u32_t)rdAddr);
memcpyd(buffer, rdAddr, copyLen >> 2);
return copyLen;
}
@@ -92,7 +92,7 @@ int ramdisk_block_write(minor_t minor, u32_t blockNum, u32_t count, void *buffer
if ((blockNum << BLOCK_SIZE_LOG) >= ramdisks[minor]->size)
return -2;
void *rdAddr = ramdisks[minor]->start + (blockNum << BLOCK_SIZE_LOG);
u32_t copyLen = min(count << BLOCK_SIZE_LOG, ramdisks[minor]->size - (u32_t)rdAddr);
u32_t copyLen = min(count << BLOCK_SIZE_LOG, ramdisks[minor]->size + (u32_t)ramdisks[minor]->start - (u32_t)rdAddr);
memcpyd(rdAddr, buffer, copyLen >> 2);
return copyLen;
}