1 #include "lib.h" 2 #include <stdlib.h> 3 #include <stdio.h> 4 #include <sys/wait.h> 5 #include <unistd.h> 6 7 int 8 system(const char *s) 9 { 10 int w, status; 11 pid_t pid; 12 char cmd[30], *oty; 13 14 oty = getenv("objtype"); 15 if(!oty) 16 return -1; 17 if(!s) 18 return 1; /* a command interpreter is available */ 19 pid = fork(); 20 sprintf(cmd, "/%s/bin/ape/sh", oty); 21 if(pid == 0) { 22 execl(cmd, "sh", "-c", s, 0); 23 _exit(1); 24 } 25 if(pid < 0){ 26 _syserrno(); 27 return -1; 28 } 29 for(;;) { 30 w = wait(&status); 31 if(w == -1 || w == pid) 32 break; 33 } 34 35 if(w == -1){ 36 _syserrno(); 37 return w; 38 } 39 return status; 40 } 41