initial support for haiku past stage0

1 files changed, 18 insertions, 1 deletions

diff --git a/lib/std/os.zig b/lib/std/os.zig
index 61d9749415..b7a471ef2c 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -32,6 +32,7 @@ const MAX_PATH_BYTES = std.fs.MAX_PATH_BYTES;
 pub const darwin = @import("os/darwin.zig");
 pub const dragonfly = @import("os/dragonfly.zig");
 pub const freebsd = @import("os/freebsd.zig");
+pub const haiku = @import("os/haiku.zig");
 pub const netbsd = @import("os/netbsd.zig");
 pub const openbsd = @import("os/openbsd.zig");
 pub const linux = @import("os/linux.zig");
@@ -66,6 +67,7 @@ else if (builtin.link_libc)
 else switch (builtin.os.tag) {
     .macos, .ios, .watchos, .tvos => darwin,
     .freebsd => freebsd,
+    .haiku => haiku,
     .linux => linux,
     .netbsd => netbsd,
     .openbsd => openbsd,
@@ -932,7 +934,7 @@ pub fn pwrite(fd: fd_t, bytes: []const u8, offset: u64) PWriteError!usize {
 /// If `iov.len` is larger than will fit in a `u31`, a partial write will occur.
 pub fn pwritev(fd: fd_t, iov: []const iovec_const, offset: u64) PWriteError!usize {
     const have_pwrite_but_not_pwritev = switch (std.Target.current.os.tag) {
-        .windows, .macos, .ios, .watchos, .tvos => true,
+        .windows, .macos, .ios, .watchos, .tvos, .haiku => true,
         else => false,
     };
 
@@ -3889,6 +3891,21 @@ pub fn pipe2(flags: u32) PipeError![2]fd_t {
             }
         }
     }
+    if (comptime std.Target.current.isHaiku()) {
+        var fds: [2]fd_t = try pipe();
+        if (flags == 0) return fds;
+        errdefer {
+            close(fds[0]);
+            close(fds[1]);
+        }
+        for (fds) |fd| switch (errno(system.fcntl(fd, F_SETFL, flags))) {
+            0 => {},
+            EINVAL => unreachable, // Invalid flags
+            EBADF => unreachable, // Always a race condition
+            else => |err| return unexpectedErrno(err),
+        };
+        return fds;
+    }
 
     const new_flags = flags & ~@as(u32, O_CLOEXEC);
     // Set every other flag affecting the file status using F_SETFL.