minix/lib/libsys/sys_umap.c

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#include "syslib.h"
/*===========================================================================*
* sys_umap *
*===========================================================================*/
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int sys_umap(proc_ep, seg, vir_addr, bytes, phys_addr)
endpoint_t proc_ep; /* process number to do umap for */
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int seg; /* T, D, or S segment */
vir_bytes vir_addr; /* address in bytes with segment*/
vir_bytes bytes; /* number of bytes to be copied */
phys_bytes *phys_addr; /* placeholder for result */
{
message m;
int result;
m.CP_SRC_ENDPT = proc_ep;
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m.CP_SRC_SPACE = seg;
m.CP_SRC_ADDR = vir_addr;
m.CP_NR_BYTES = bytes;
result = _kernel_call(SYS_UMAP, &m);
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*phys_addr = m.CP_DST_ADDR;
return(result);
}