1 #include "fork.h"

     2 #include "strerr.h"

     3 #include "error.h"

     4 #include "wait.h"

     5 #include "sig.h"

     6 #include "exit.h"

     7 

     8 #define FATAL "bouncesaying: fatal: "

     9 

    10 void main(argc,argv)

    11 int argc;

    12 char **argv;

    13 {

    14   int pid;

    15   int wstat;

    16 

    17   if (!argv[1])

    18     strerr_die1x(100,"bouncesaying: usage: bouncesaying error [ program [ arg ... ] ]");

    19 

    20   if (argv[2]) {

    21     pid = fork();

    22     if (pid == -1)

    23       strerr_die2sys(111,FATAL,"unable to fork: ");

    24     if (pid == 0) {

    25       execvp(argv[2],argv + 2);

    26       if (error_temp(errno)) _exit(111);

    27       _exit(100);

    28     }

    29     if (wait_pid(&wstat,pid) == -1)

    30       strerr_die2x(111,FATAL,"wait failed");

    31     if (wait_crashed(wstat))

    32       strerr_die2x(111,FATAL,"child crashed");

    33     switch(wait_exitcode(wstat)) {

    34       case 0: break;

    35       case 111: strerr_die2x(111,FATAL,"temporary child error");

    36       default: _exit(0);

    37     }

    38   }

    39 

    40   strerr_die1x(100,argv[1]);

    41 }