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 32cd48748c4dc609ab1884784aee3f404f716a3f..86213ee1b3392ccf1a704862a2b05f2d3bb17c17 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 9191dc3219e60d57b6d1d881ac1c5df17ef3659d..9f9f7f9de04b41929bd81e6bd6e8c2ce6a837544 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 778ab156b09cc6d344e3829d82fe5cca00420d4a..b49b46e8e55e81a7d46689a631ce0fbd12ea8de3 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
-- 
2.54.0