From 7b8ce267d97d4137f53fa661fbb6667a7dc0af8b Mon Sep 17 00:00:00 2001
From: Greg Alexander <gitgreg@galexander.org>
Date: Sat, 28 Oct 2017 14:20:35 -0400
Subject: [PATCH] disable use of sigprocmask() in rsync, because Android Oreo
 (quite inappropriately) seems to terminate the process when it is called.

---
 rsync/config.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/rsync/config.h b/rsync/config.h
index 78dbfce..925dcf0 100644
--- a/rsync/config.h
+++ b/rsync/config.h
@@ -47,7 +47,15 @@
 #define HAVE_GETADDRINFO 1
 #define HAVE_CHMOD 1
 #define HAVE_SIGACTION 1
+/* Bionic supplies sigprocmask() but in Android Oreo and beyond, it seems to be:
+ *    fprintf(stderr, "Bad system call\n");
+ *    exit(0);
+ * When it should probably be:
+ *    errno=ENOSYS;
+ *    return -1;
+ * WTF, Bionic.
 #define HAVE_SIGPROCMASK 1
+*/
 #define SUPPORT_LINKS 1
 #define SUPPORT_HARD_LINKS 1
 #define HAVE_LINK 1