2bfeeed885
. all invocations were S or D, so can safely be dropped to prepare for the segmentless world . still assign D to the SCP_SEG field in the message to make previous kernels usable
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
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#include "syslib.h"
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#include <minix/safecopies.h>
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int sys_safecopyfrom(endpoint_t src_e,
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cp_grant_id_t gr_id, vir_bytes offset,
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vir_bytes address, size_t bytes)
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{
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/* Transfer a block of data for which the other process has previously
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* given permission.
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*/
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message copy_mess;
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copy_mess.SCP_FROM_TO = src_e;
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copy_mess.SCP_GID = gr_id;
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copy_mess.SCP_OFFSET = (long) offset;
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copy_mess.SCP_ADDRESS = (char *) address;
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copy_mess.SCP_BYTES = (long) bytes;
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/* for older kernels that still need the 'seg' field
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* provide the right value.
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*/
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copy_mess.SCP_SEG_OBSOLETE = D;
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return(_kernel_call(SYS_SAFECOPYFROM, ©_mess));
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}
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int sys_safecopyto(endpoint_t dst_e,
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cp_grant_id_t gr_id, vir_bytes offset,
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vir_bytes address, size_t bytes)
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{
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/* Transfer a block of data for which the other process has previously
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* given permission.
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*/
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message copy_mess;
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copy_mess.SCP_FROM_TO = dst_e;
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copy_mess.SCP_GID = gr_id;
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copy_mess.SCP_OFFSET = (long) offset;
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copy_mess.SCP_ADDRESS = (char *) address;
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copy_mess.SCP_BYTES = (long) bytes;
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/* for older kernels that still need the 'seg' field
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* provide the right value.
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*/
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copy_mess.SCP_SEG_OBSOLETE = D;
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return(_kernel_call(SYS_SAFECOPYTO, ©_mess));
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}
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