From 1811e7e6c96844a8381e6a69017948cae0b8b261 Mon Sep 17 00:00:00 2001
From: Marcio Giaxa <i@mgxm.me>
Date: Tue, 18 Dec 2018 02:42:54 -0200
Subject: [PATCH] freebsd: remove getrandom dependency from libc

The system call getrandom(2) just landed on FreeBSD 12, so if we want to
support some earlier version or at least FreeBSD 11, we can't depend on
the system call.
---
 std/c/freebsd.zig        | 1 -
 std/os/freebsd/index.zig | 4 ----
 std/os/index.zig         | 4 ++--
 3 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/std/c/freebsd.zig b/std/c/freebsd.zig
index 32cd48748..86213ee1b 100644
--- a/std/c/freebsd.zig
+++ b/std/c/freebsd.zig
@@ -15,7 +15,6 @@ pub extern "c" fn sysctlbyname(name: [*]const u8, oldp: ?*c_void, oldlenp: ?*usi
 pub extern "c" fn sysctlnametomib(name: [*]const u8, mibp: ?*c_int, sizep: ?*usize) c_int;
 pub extern "c" fn getdirentries(fd: c_int, buf_ptr: [*]u8, nbytes: usize, basep: *i64) usize;
 pub extern "c" fn pipe2(arg0: *[2]c_int, arg1: u32) c_int;
-pub extern "c" fn getrandom(buf: [*]u8, count: usize, flags: u32) c_int;
 
 /// Renamed from `kevent` to `Kevent` to avoid conflict with function name.
 pub const Kevent = extern struct {
diff --git a/std/os/freebsd/index.zig b/std/os/freebsd/index.zig
index 9191dc321..9f9f7f9de 100644
--- a/std/os/freebsd/index.zig
+++ b/std/os/freebsd/index.zig
@@ -672,10 +672,6 @@ pub fn exit(code: i32) noreturn {
     c.exit(code);
 }
 
-pub fn getrandom(buf: [*]u8, count: usize, flags: u32) usize {
-    return errnoWrap(c.getrandom(buf, count, flags));
-}
-
 pub fn kill(pid: i32, sig: i32) usize {
     return arch.syscall2(SYS_kill, @bitCast(usize, isize(pid)), @bitCast(usize, isize(sig)));
 }
diff --git a/std/os/index.zig b/std/os/index.zig
index 778ab156b..b49b46e8e 100644
--- a/std/os/index.zig
+++ b/std/os/index.zig
@@ -103,7 +103,7 @@ const math = std.math;
 /// library implementation.
 pub fn getRandomBytes(buf: []u8) !void {
     switch (builtin.os) {
-        Os.linux, Os.freebsd => while (true) {
+        Os.linux => while (true) {
             // TODO check libc version and potentially call c.getrandom.
             // See #397
             const errno = posix.getErrno(posix.getrandom(buf.ptr, buf.len, 0));
@@ -116,7 +116,7 @@ pub fn getRandomBytes(buf: []u8) !void {
                 else => return unexpectedErrorPosix(errno),
             }
         },
-        Os.macosx, Os.ios => return getRandomBytesDevURandom(buf),
+        Os.macosx, Os.ios, Os.freebsd => return getRandomBytesDevURandom(buf),
         Os.windows => {
             // Call RtlGenRandom() instead of CryptGetRandom() on Windows
             // https://github.com/rust-lang-nursery/rand/issues/111