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From: arisawa@ar.aichi-u.ac.jp
Date: Tue, 22 Aug 2006 23:39:17 +0900
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: [9fans] exit message
Topicbox-Message-UUID: a4f9b98c-ead1-11e9-9d60-3106f5b1d025

Hello,

Do we have any way to find exit message of child process in the  
following case?
That is, parent waits child to finish by reading output of child  
process.

         Biobuf ib;
         int fd[2];
         pipe(fd);
         switch(fork()){
         case -1:
                 return -1;
         case 0:
                 dup(fd[1], 1);
                 dup(fd[1], 2);
                 close(fd[1]);
                 exec(path, argv);
         default:
                 close(fd[1]);
                 break;
         }

         Binit(&ib, fd[0], OREAD);
         while((p = Brdstr(&ib,'\n',1))){
                 ...
         }
	/* how to find exit message of child process here? */

Kenji Arisawa