[hackers] [scroll] ptty: explicit wait for child || Jan Klemkow

[git]

commit d10c029b182fef1af4c6ec2713f9a8a3a5245edb
Author:     Jan Klemkow <j.klem...@wemelug.de>
AuthorDate: Thu Apr 16 23:19:21 2020 +0200
Commit:     Jan Klemkow <j.klem...@wemelug.de>
CommitDate: Thu Apr 16 23:19:21 2020 +0200

    ptty: explicit wait for child

diff --git a/ptty.c b/ptty.c
index 156e1a5..0c30fd5 100644
--- a/ptty.c
+++ b/ptty.c
@@ -138,11 +138,9 @@ main(int argc, char *argv[])
                        break;
        }
 
-       pid_t pid;
        int status;
-       while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
-               if (pid != child)
-                       continue;
+       if (waitpid(child, &status, 0) != child)
+               die("waitpid:");
 
        return WEXITSTATUS(status);
 }