#include <u.h>#include <libc.h> Waitmsg*system(char *name, char **argv){ char err[ERRMAX]; Waitmsg *w; int pid; switch(pid = fork()){ /* assign = */ case -1: return nil; case 0: exec(name, argv); errstr(err, sizeof err); _exits(err); } for(;;){ w = wait(); if(w == nil) break; if(w->pid == pid) return w; free(w); } return nil;} Waitmsg*systeml(char *name, ...){ return system(name, &name+1);}
#include <u.h>
#include <libc.h>
Waitmsg*
system(char *name, char **argv)
{
char err[ERRMAX];
Waitmsg *w;
int pid;
switch(pid = fork()){ /* assign = */
case -1:
return nil;
case 0:
exec(name, argv);
errstr(err, sizeof err);
_exits(err);
}
for(;;){
w = wait();
if(w == nil)
break;
if(w->pid == pid)
return w;
free(w);
}
return nil;
}
Waitmsg*
systeml(char *name, ...)
{
return system(name, &name+1);
}