minix/lib/libsys/sys_getinfo.c
Lionel Sambuc dcb7493a05 Message type for SYS_GETINFO and SYS_GETWHOAMI
Change-Id: I9cea3f65b29e30555c8b47865e12c7d19a74a3c3
2014-07-28 17:05:47 +02:00

55 lines
1.6 KiB
C

#include <string.h>
#include <sys/param.h>
#include "syslib.h"
/*===========================================================================*
* sys_getinfo *
*===========================================================================*/
int sys_getinfo(request, ptr, len, ptr2, len2)
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 */
{
message m;
m.m_lsys_krn_sys_getinfo.request = request;
m.m_lsys_krn_sys_getinfo.endpt = SELF; /* always store values at caller */
m.m_lsys_krn_sys_getinfo.val_ptr = ptr;
m.m_lsys_krn_sys_getinfo.val_len = len;
m.m_lsys_krn_sys_getinfo.val_ptr2 = ptr2;
m.m_lsys_krn_sys_getinfo.val_len2_e = len2;
return(_kernel_call(SYS_GETINFO, &m));
}
/*===========================================================================*
* sys_whoami *
*===========================================================================*/
int sys_whoami(endpoint_t *who_ep, char *who_name, int len,
int *priv_flags)
{
message m;
int r;
int lenmin;
m.m_lsys_krn_sys_getinfo.request = GET_WHOAMI;
if(len < 2)
return EINVAL;
if((r = _kernel_call(SYS_GETINFO, &m)) != OK)
return r;
lenmin = MIN((size_t) len, sizeof(m.m_krn_lsys_sys_getwhoami.name)) - 1;
strncpy(who_name, m.m_krn_lsys_sys_getwhoami.name, lenmin);
who_name[lenmin] = '\0';
*who_ep = m.m_krn_lsys_sys_getwhoami.endpt;
*priv_flags = m.m_krn_lsys_sys_getwhoami.privflags;
return OK;
}