[hackers] [blind] Use stdin rather than stdout if - is opened with O_RDWR because <> defaults to stdin || Mattias Andrée

[git]

commit 17bc0390ace0e29abd4eb47e5032df81bf3ef2b3
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Mon May 1 23:22:11 2017 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Mon May 1 23:22:11 2017 +0200

    Use stdin rather than stdout if - is opened with O_RDWR because <> defaults 
to stdin
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/src/util.c b/src/util.c
index a30f0f0..de520de 100644
--- a/src/util.c
+++ b/src/util.c
@@ -244,10 +244,10 @@ xenopen(int status, const char *path, int flags, int 
mode, ...)
        } else if (!strcmp(path, "/dev/stderr")) {
                return STDERR_FILENO;
        } else if (!strcmp(path, "-")) {
-               if ((flags & O_ACCMODE) == O_RDONLY)
-                       return STDIN_FILENO;
-               else
+               if ((flags & O_ACCMODE) == O_WRONLY)
                        return STDOUT_FILENO;
+               else
+                       return STDIN_FILENO;
        }
        fd = open(path, flags, mode);
        if (fd < 0)