[hackers] [sent] _exit() instead of exit() after failed exec || FRIGN

[git]

commit e8914d5d4bedb12bccf78a930b34b1564b3dbaac
Author:     FRIGN <d...@frign.de>
AuthorDate: Thu Aug 11 21:20:07 2016 +0200
Commit:     Markus Teich <markus.te...@stusta.mhn.de>
CommitDate: Thu Aug 11 23:42:09 2016 +0200

    _exit() instead of exit() after failed exec
    
    die() calls exit(), but actually at this point the program could be in a
    state not allowing this. It's better to call _exit to stop the libc from
    calling any handlers that might fail at this moment anyway.

diff --git a/sent.c b/sent.c
index f6c57fb..a4d0cd2 100644
--- a/sent.c
+++ b/sent.c
@@ -150,7 +150,8 @@ filter(int fd, const char *cmd)
                close(fds[0]);
                close(fds[1]);
                execlp("sh", "sh", "-c", cmd, (char *)0);
-               die("sent: execlp sh -c '%s':", cmd);
+               fprintf(stderr, "sent: execlp sh -c '%s': %s\n", cmd, 
strerror(errno));
+               _exit(1);
        }
        close(fds[1]);
        return fds[0];