minix/lib/nbsd_libc/sys-minix/priority.c
Gianluca Guida 4f294c247f Add NBSDLibc Minix specific files.
This patch mainly copies and modifies files existing in
the current libc implementing minix specific functions.

To keep consisten with the NetBSD libc, we remove 
namespace stubs and we use "namespace.h" and weak
links.
2011-02-17 17:11:09 +00:00

48 lines
826 B
C

/*
priority.c
*/
#include <sys/cdefs.h>
#include "namespace.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/resource.h>
#include <lib.h>
#include <unistd.h>
#include <string.h>
#include <stddef.h>
int getpriority(int which, int who)
{
int v;
message m;
m.m1_i1 = which;
m.m1_i2 = who;
/* GETPRIORITY returns negative for error.
* Otherwise, it returns the priority plus the minimum
* priority, to distiginuish from error. We have to
* correct for this. (The user program has to check errno
* to see if something really went wrong.)
*/
if((v = _syscall(PM_PROC_NR, GETPRIORITY, &m)) < 0) {
return v;
}
return v + PRIO_MIN;
}
int setpriority(int which, int who, int prio)
{
message m;
m.m1_i1 = which;
m.m1_i2 = who;
m.m1_i3 = prio;
return _syscall(PM_PROC_NR, SETPRIORITY, &m);
}