minix/lib/libsys/getsysinfo.c

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#include "syslib.h"
#include <string.h>
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#include <minix/sysinfo.h>
#include <minix/com.h>
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int getsysinfo(
endpoint_t who, /* from whom to request info */
int what, /* what information is requested */
void *where, /* where to put it */
size_t size /* how big it should be */
)
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{
message m;
int call_nr;
switch (who) {
case PM_PROC_NR: call_nr = PM_GETSYSINFO; break;
case VFS_PROC_NR: call_nr = VFS_GETSYSINFO; break;
case RS_PROC_NR: call_nr = RS_GETSYSINFO; break;
case DS_PROC_NR: call_nr = DS_GETSYSINFO; break;
default:
return ENOSYS;
}
memset(&m, 0, sizeof(m));
m.m_lsys_getsysinfo.what = what;
m.m_lsys_getsysinfo.where = where;
m.m_lsys_getsysinfo.size = size;
return _taskcall(who, call_nr, &m);
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}