minix/lib/syslib/sys_getinfo.c

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#include <string.h>
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#include "syslib.h"
/*===========================================================================*
* sys_getinfo *
*===========================================================================*/
PUBLIC int sys_getinfo(request, ptr, len, ptr2, len2)
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int request; /* system info requested */
void *ptr; /* pointer where to store it */
int len; /* max length of value to get */
void *ptr2; /* second pointer */
int len2; /* length or process nr */
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{
message m;
m.I_REQUEST = request;
m.I_ENDPT = SELF; /* always store values at caller */
m.I_VAL_PTR = ptr;
m.I_VAL_LEN = len;
m.I_VAL_PTR2 = ptr2;
m.I_VAL_LEN2_E = len2;
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return(_taskcall(SYSTASK, SYS_GETINFO, &m));
}
/*===========================================================================*
* sys_whoami *
*===========================================================================*/
PUBLIC int sys_whoami(endpoint_t *who_ep, char *who_name, int len)
{
message m;
int r;
int lenmin;
m.I_REQUEST = GET_WHOAMI;
if(len < 2)
return EINVAL;
if((r = _taskcall(SYSTASK, SYS_GETINFO, &m)) != OK)
return r;
lenmin = MIN(len, sizeof(m.GIWHO_NAME)) - 1;
strncpy(who_name, m.GIWHO_NAME, lenmin);
who_name[lenmin] = '\0';
*who_ep = m.GIWHO_EP;
return OK;
}
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