main/musl: cherry-pick fixes and compatibility improvements from upstream

1 files changed, 39 insertions, 0 deletions

diff --git a/main/musl/0012-fix-uninitialized-output-from-sched_getaffinity.patch b/main/musl/0012-fix-uninitialized-output-from-sched_getaffinity.patch
new file mode 100644
index 0000000000..8e99597be3
--- /dev/null
+++ b/main/musl/0012-fix-uninitialized-output-from-sched_getaffinity.patch
@@ -0,0 +1,39 @@
+From a56e339419c1a90f8a85f86621f3c73945e07b23 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Tue, 2 Dec 2014 21:54:36 -0500
+Subject: [PATCH] fix uninitialized output from sched_getaffinity
+
+the sched_getaffinity syscall only fills a cpu set up to the set size
+used/supported by the kernel. the rest is left untouched and userspace
+is responsible for zero-filling it based on the return value of the
+syscall.
+---
+ src/sched/affinity.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/sched/affinity.c b/src/sched/affinity.c
+index 3b40211..737e41b 100644
+--- a/src/sched/affinity.c
++++ b/src/sched/affinity.c
+@@ -1,5 +1,6 @@
+ #define _GNU_SOURCE
+ #include <sched.h>
++#include <string.h>
+ #include "pthread_impl.h"
+ #include "syscall.h"
+ 
+@@ -16,7 +17,10 @@ int pthread_setaffinity_np(pthread_t td, size_t size, const cpu_set_t *set)
+ int sched_getaffinity(pid_t tid, size_t size, cpu_set_t *set)
+ {
+ 	long ret = __syscall(SYS_sched_getaffinity, tid, size, set);
+-	if (ret > 0) ret = 0;
++	if (ret > 0) {
++		if (ret < size) memset((char *)set+ret, 0, size-ret);
++		ret = 0;
++	}
+ 	return __syscall_ret(ret);
+ }
+ 
+-- 
+2.2.0
+