minix/lib/libminlib/getnprocnr.c

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#include <lib.h>
#include <unistd.h>
PUBLIC int getnprocnr(pid_t pid)
{
message m;
int t = GETPROCNR;
m.m1_i1 = pid; /* pass pid >=0 to search for */
m.m1_i2 = 0; /* don't pass name to search for */
if (_syscall(PM_PROC_NR, t, &m) < 0) return(-1);
return(m.m1_i1); /* return search result */
}