1 #include "syslib.h"
2
3 /*===========================================================================*
4 * sys_umap_remote *
5 *===========================================================================*/
sys_umap_remote(proc_ep,grantee,seg,vir_addr,bytes,phys_addr)6 int sys_umap_remote(proc_ep, grantee, seg, vir_addr, bytes, phys_addr)
7 endpoint_t proc_ep; /* process number to do umap for */
8 endpoint_t grantee; /* process nr to check as grantee */
9 int seg; /* T, D, or S segment */
10 vir_bytes vir_addr; /* address in bytes with segment*/
11 vir_bytes bytes; /* number of bytes to be copied */
12 phys_bytes *phys_addr; /* placeholder for result */
13 {
14 message m;
15 int result;
16
17 /* Note about the grantee parameter:
18 * - Is ignored for non-grant umap calls, but should be SELF to
19 * pass the sanity check in that case;
20 * - May be SELF to get the same behaviour as sys_umap, namely that the
21 * caller must be the grantee;
22 * - In all other cases, should be a valid endpoint (neither ANY nor NONE).
23 */
24
25 m.m_lsys_krn_sys_umap.src_endpt = proc_ep;
26 m.m_lsys_krn_sys_umap.dst_endpt = grantee;
27 m.m_lsys_krn_sys_umap.segment = seg;
28 m.m_lsys_krn_sys_umap.src_addr = vir_addr;
29 m.m_lsys_krn_sys_umap.nr_bytes = bytes;
30
31 result = _kernel_call(SYS_UMAP_REMOTE, &m);
32 *phys_addr = m.m_krn_lsys_sys_umap.dst_addr;
33 return(result);
34 }
35
36