sys-apps/rng-tools: remove unused patch

Signed-off-by: Michael Mair-Keimberger <m.mairkeimberger@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/11552
Signed-off-by: Aaron Bauman <bman@gentoo.org>

diff --git a/sys-apps/rng-tools/files/rng-tools-6-fix-noctty.patch b/sys-apps/rng-tools/files/rng-tools-6-fix-noctty.patch
deleted file mode 100644 (file)
index e915150..0000000
--- a/sys-apps/rng-tools/files/rng-tools-6-fix-noctty.patch
+++ /dev/null
@@ -1,45 +0,0 @@
-From: Gokturk Yuksek <gokturk@binghamton.edu>
-Subject: [PATCH] Fix rngd to open the entropy source with 'O_NOCTTY' flag
-
-When start-stop-daemon starts a rngd instance configured to use a tty
-device as its entropy source, the application crashes due to not being
-able to read from the entropy device. This is caused by
-start-stop-daemon calling setsid() before executing rngd, which
-disassociates the controlling terminal. When rngd attempts to open a
-hardware entropy source that's a tty device, per POSIX rules, the
-device becomes the controlling terminal for the process. Then rngd
-calls daemon(), which internally calls setsid(), and consequently
-disassociates the controlling terminal for the child. Meanwhile the
-parent rngd process exits. This results in tty device hanging up. By
-looking at the strace logs attached to the bug, it can be observed
-that although the parent rngd process is able to read() from the
-entropy source successfully, further attempts to read() by the child
-rngd process return 0. This complies with the POSIX, which states that
-read() calls on a hung up terminal shall return 0.
-
-Note that when rngd is started without start-stop-daemon, this problem
-does not happen because at the time of opening the entropy source rngd
-already has a controlling terminal.
-
-Prevent the entropy source from becoming the controlling terminal by
-passing 'O_NOCTTY' flag to open() when opening an entropy source. This
-flag prevents a tty device from becoming the controlling terminal for
-a process without a controlling terminal at the time of open().
-
-Thanks to John Bowler <jbowler@acm.org> for debugging the problem and
-pinpointing the issue as well as confirming the fix.
-
-Gentoo-Bug-URL: https://bugs.gentoo.org/556456
-Reported-By: John Bowler <jbowler@acm.org>
-
---- rng-tools-rng-tools-6/rngd_entsource.c
-+++ rng-tools-rng-tools-6/rngd_entsource.c
-@@ -162,7 +162,7 @@
-       struct sysfs_attribute *rngavail;
-       char buf[16];
- 
--      ent_src->rng_fd = open(ent_src->rng_fname, O_RDONLY);
-+      ent_src->rng_fd = open(ent_src->rng_fname, O_RDONLY | O_NOCTTY);
-       if (ent_src->rng_fd == -1) {
-               message(LOG_DAEMON|LOG_DEBUG, "Unable to open file: %s", ent_src->rng_fname);
-               return 1;