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21 lines
576 B
21 lines
576 B
/* ramread.c - ramread */ |
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#include <xinu.h> |
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#include <ramdisk.h> |
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/*------------------------------------------------------------------------ |
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* ramread - Read a block from a ram disk |
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*------------------------------------------------------------------------ |
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*/ |
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devcall ramread ( |
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struct dentry *devptr, /* Entry in device switch table */ |
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char *buff, /* Buffer to hold disk block */ |
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int32 blk /* Block number of block to read*/ |
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) |
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{ |
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int32 bpos; /* Byte position of blk */ |
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bpos = RM_BLKSIZ * blk; |
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memcpy(buff, &Ram.disk[bpos], RM_BLKSIZ); |
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return OK; |
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}
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