[hackers] [scroll] ptty: error handling of close(2) || Jan Klemkow

[git]

commit e96f0b9671d12a6977225ea22f7edf455331aa6e
Author:     Jan Klemkow <j.klem...@wemelug.de>
AuthorDate: Thu Apr 16 22:03:04 2020 +0200
Commit:     Jan Klemkow <j.klem...@wemelug.de>
CommitDate: Thu Apr 16 22:03:04 2020 +0200

    ptty: error handling of close(2)

diff --git a/ptty.c b/ptty.c
index 95adc3c..9d7ee3b 100644
--- a/ptty.c
+++ b/ptty.c
@@ -112,7 +112,8 @@ main(int argc, char *argv[])
                                die("read:");
                        if (n == 0) {
                                pfd[0].fd = -1;
-                               close(mfd);
+                               if (close(mfd) == -1)
+                                       die("close:");
                                break;
                        }
                        if (write(mfd, buf, n) == -1)
@@ -129,7 +130,8 @@ main(int argc, char *argv[])
 
                if (pfd[0].revents & POLLHUP) {
                        pfd[0].fd = -1;
-                       close(mfd);
+                       if (close(mfd) == -1)
+                               die("close:");
                        break;
                }
                if (pfd[1].revents & POLLHUP)