bouncesaying.c

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#include <unistd.h>
#include "logmsg.h"
#include "buffer.h"
#include "wait.h"
#include "sig.h"
#include "exit.h"
 
#define WHO "bouncesaying"
 
int main(int argc,char * const *argv)
{
  int pid;
  int wstat;
 
  if (!argv[1])
    logmsg(WHO,100,USAGE,"bouncesaying error [ program [ arg ... ] ]");
 
  if (argv[2]) {
    pid = fork();
    if (pid == -1)
      logmsg(WHO,111,FATAL,"unable to fork: ");
    if (pid == 0) {
      execvp(argv[2],argv + 2);
      if (errno) _exit(111);
      _exit(100);
    }
    if (wait_pid(&wstat,pid) == -1)
      logmsg(WHO,111,FATAL,"wait failed");
    if (wait_crashed(wstat))
      logmsg(WHO,111,FATAL,"child crashed");
    switch (wait_exitcode(wstat)) {
      case 0: break;
      case 111: logmsg(WHO,111,FATAL,"temporary child error");
      default: _exit(0);
    }
  }
 
  buffer_puts(buffer_2,WHO);
  buffer_puts(buffer_2,": ");
  buffer_puts(buffer_2,argv[1]);
  buffer_puts(buffer_2,"\n");
  buffer_flush(buffer_2);
  _exit(100); 
}