Add android support, that uses new swift-foundation for Android

CMakeLists.txt

@@ -42,7 +42,7 @@ if(NOT SWIFT_SYSTEM_NAME)
 endif()
 
 # Don't enable WMO on Windows due to linker failures
-if(NOT CMAKE_SYSTEM_NAME STREQUAL Windows)
+if(NOT CMAKE_HOST_SYSTEM_NAME STREQUAL Windows)
     # Enable whole module optimization for release builds & incremental for debug builds
     if(POLICY CMP0157)
         set(CMAKE_Swift_COMPILATION_MODE "$<IF:$<CONFIG:Release>,wholemodule,incremental>")
@@ -150,6 +150,12 @@ if(NOT CMAKE_SYSTEM_NAME STREQUAL "WASI")
             "-I${DISPATCH_INCLUDE_PATH}/Block")
     endif()
 endif()
+if(ANDROID)
+  # LibXml2 looks for the Threads package, so
+  # ensure that it doesn't try to use the `-pthread`
+  # flag on Android.
+  set(CMAKE_HAVE_LIBC_PTHREAD YES)
+endif()
 find_package(LibXml2 REQUIRED)
 if(FOUNDATION_BUILD_NETWORKING)
     find_package(CURL REQUIRED)

Sources/CoreFoundation/include/ForSwiftFoundationOnly.h

@@ -69,6 +69,13 @@
 #include <sys/stat.h>
 #include <sys/syscall.h>
 #include <termios.h>
+#include <linux/fcntl.h>
+#ifdef __swift__
+// The linux/stat header is private in the Android modulemap.
+#pragma clang module import posix_filesystem.linux_stat
+#else
+#include <linux/stat.h>
+#endif
 #elif TARGET_OS_WASI
 #include <fcntl.h>
 #include <sys/stat.h>

Sources/CoreFoundation/internalInclude/CoreFoundation_Prefix.h

@@ -200,9 +200,9 @@ static dispatch_queue_t __ ## PREFIX ## Queue(void) {			\
 #endif
 
 // We know some things (Darwin, WASI, Glibc >= 2.38) have strlcpy/strlcat
-#if TARGET_OS_MAC || TARGET_OS_WASI                     \
-  || (defined(__GLIBC__) &&                             \
-      ((__GLIBC_MAJOR__ == 2 && __GLIBC_MINOR__ >= 38)  \
+#if TARGET_OS_MAC || TARGET_OS_WASI || TARGET_OS_ANDROID \
+  || (defined(__GLIBC__) &&                              \
+      ((__GLIBC_MAJOR__ == 2 && __GLIBC_MINOR__ >= 38)   \
        || __GLIBC_MAJOR__ > 2))
 #define HAVE_STRLCPY 1
 #define HAVE_STRLCAT 1

Sources/Foundation/CGFloat.swift

@@ -7,6 +7,10 @@
 // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 //
 
+#if canImport(Android)
+import Android
+#endif
+
 @frozen
 public struct CGFloat: Sendable {
 #if arch(i386) || arch(arm) || arch(wasm32)

Sources/Foundation/FileHandle.swift

@@ -34,6 +34,11 @@ import WASILibc
 fileprivate let _read = WASILibc.read(_:_:_:)
 fileprivate let _write = WASILibc.write(_:_:_:)
 fileprivate let _close = WASILibc.close(_:)
+#elseif canImport(Android)
+import Android
+fileprivate let _read = Android.read(_:_:_:)
+fileprivate let _write = Android.write(_:_:_:)
+fileprivate let _close = Android.close(_:)
 #endif
 
 #if canImport(WinSDK)
@@ -324,7 +329,7 @@ open class FileHandle : NSObject, @unchecked Sendable {
                 let data = mmap(nil, mapSize, PROT_READ, MAP_PRIVATE, _fd, 0)
                 // Swift does not currently expose MAP_FAILURE
                 if data != UnsafeMutableRawPointer(bitPattern: -1) {
-                    return NSData.NSDataReadResult(bytes: data!, length: mapSize) { buffer, length in
+                    return NSData.NSDataReadResult(bytes: data, length: mapSize) { buffer, length in
                         munmap(buffer, length)
                     }
                 }

Sources/Foundation/FileManager+POSIX.swift

@@ -7,6 +7,10 @@
 //
 #if !os(Windows)
 
+#if canImport(Android)
+import Android
+#endif
+
 #if os(Android) && (arch(i386) || arch(arm)) // struct stat.st_mode is UInt32
 internal func &(left: UInt32, right: mode_t) -> mode_t {
     return mode_t(left) & right
@@ -398,13 +402,13 @@ extension FileManager {
 
                 _current = fts_read(stream)
                 while let current = _current {
-                    let filename = FileManager.default.string(withFileSystemRepresentation: current.pointee.fts_path, length: Int(current.pointee.fts_pathlen))
+                    let filename = FileManager.default.string(withFileSystemRepresentation: current.pointee.fts_path!, length: Int(current.pointee.fts_pathlen))
 
                     switch Int32(current.pointee.fts_info) {
                         case FTS_D:
                             let (showFile, skipDescendants) = match(filename: filename, to: _options, isDir: true)
                             if skipDescendants {
-                                fts_set(_stream, _current, FTS_SKIP)
+                                fts_set(stream, current, FTS_SKIP)
                             }
                             if showFile {
                                  return URL(fileURLWithPath: filename, isDirectory: true)
@@ -578,7 +582,7 @@ extension FileManager {
             let finalErrno = originalItemURL.withUnsafeFileSystemRepresentation { (originalFS) -> Int32? in
                 return newItemURL.withUnsafeFileSystemRepresentation { (newItemFS) -> Int32? in
                     // This is an atomic operation in many OSes, but is not guaranteed to be atomic by the standard.
-                    if rename(newItemFS, originalFS) == 0 {
+                    if rename(newItemFS!, originalFS!) == 0 {
                         return nil
                     } else {
                         return errno

Sources/Foundation/FileManager.swift

@@ -21,6 +21,8 @@ import WinSDK
 
 #if os(WASI)
 import WASILibc
+#elseif canImport(Android)
+import Android
 #endif
 
 #if os(Windows)

Sources/Foundation/Host.swift

@@ -12,8 +12,9 @@
 import WinSDK
 #endif
 
-#if os(Android)
-    // Android Glibc differs a little with respect to the Linux Glibc.
+#if canImport(Android)
+    import Android
+    // Android Bionic differs a little with respect to the Linux Glibc.
 
     // IFF_LOOPBACK is part of the enumeration net_device_flags, which needs to
     // convert to UInt32.
@@ -24,8 +25,8 @@ import WinSDK
     }
 
     // getnameinfo uses size_t for its 4th and 6th arguments.
-    private func getnameinfo(_ addr: UnsafePointer<sockaddr>?, _ addrlen: socklen_t, _ host: UnsafeMutablePointer<Int8>?, _ hostlen: socklen_t, _ serv: UnsafeMutablePointer<Int8>?, _ servlen: socklen_t, _ flags: Int32) -> Int32 {
-        return Glibc.getnameinfo(addr, addrlen, host, Int(hostlen), serv, Int(servlen), flags)
+    private func getnameinfo(_ addr: UnsafePointer<sockaddr>, _ addrlen: socklen_t, _ host: UnsafeMutablePointer<Int8>?, _ hostlen: socklen_t, _ serv: UnsafeMutablePointer<Int8>?, _ servlen: socklen_t, _ flags: Int32) -> Int32 {
+        return Android.getnameinfo(addr, addrlen, host, Int(hostlen), serv, Int(servlen), flags)
     }
 
     // getifaddrs and freeifaddrs are not available in Android 6.0 or earlier, so call these functions dynamically.

Sources/Foundation/NSData.swift

@@ -11,6 +11,9 @@
 #if !os(WASI)
 import Dispatch
 #endif
+#if canImport(Android)
+import Android
+#endif
 
 extension NSData {
     public typealias ReadingOptions = Data.ReadingOptions
@@ -469,6 +472,8 @@ open class NSData : NSObject, NSCopying, NSMutableCopying, NSSecureCoding {
             let createMode = Int(Musl.S_IRUSR) | Int(Musl.S_IWUSR) | Int(Musl.S_IRGRP) | Int(Musl.S_IWGRP) | Int(Musl.S_IROTH) | Int(Musl.S_IWOTH)
 #elseif canImport(WASILibc)
             let createMode = Int(WASILibc.S_IRUSR) | Int(WASILibc.S_IWUSR) | Int(WASILibc.S_IRGRP) | Int(WASILibc.S_IWGRP) | Int(WASILibc.S_IROTH) | Int(WASILibc.S_IWOTH)
+#elseif canImport(Android)
+            let createMode = Int(Android.S_IRUSR) | Int(Android.S_IWUSR) | Int(Android.S_IRGRP) | Int(Android.S_IWGRP) | Int(Android.S_IROTH) | Int(Android.S_IWOTH)
 #endif
             guard let fh = FileHandle(path: path, flags: flags, createMode: createMode) else {
                 throw _NSErrorWithErrno(errno, reading: false, path: path)

Sources/Foundation/NSError.swift

@@ -16,6 +16,8 @@ import Darwin
 import Glibc
 #elseif canImport(CRT)
 import CRT
+#elseif canImport(Android)
+import Android
 #endif
 
 @_implementationOnly import CoreFoundation

Sources/Foundation/NSLock.swift

@@ -11,6 +11,8 @@
 
 #if canImport(Glibc)
 import Glibc
+#elseif canImport(Android)
+import Android
 #endif
 
 #if os(Windows)

Sources/Foundation/NSPathUtilities.swift

@@ -10,6 +10,8 @@
 @_implementationOnly import CoreFoundation
 #if os(Windows)
 import WinSDK
+#elseif canImport(Android)
+import Android
 #elseif os(WASI)
 import WASILibc
 #endif

Sources/Foundation/NSPlatform.swift

@@ -10,6 +10,9 @@
 #if os(macOS) || os(iOS)
 fileprivate let _NSPageSize = Int(vm_page_size)
 #elseif os(Linux) || os(Android) || os(OpenBSD)
+#if canImport(Android)
+import Android
+#endif
 fileprivate let _NSPageSize = Int(getpagesize())
 #elseif os(Windows)
 import WinSDK

Sources/Foundation/NSSwiftRuntime.swift

@@ -19,6 +19,8 @@ internal import Synchronization
 @_exported import Glibc
 #elseif canImport(Musl)
 @_exported import Musl
+#elseif canImport(Bionic)
+@_exported import Bionic
 #elseif os(WASI)
 @_exported import WASILibc
 #elseif os(Windows)

Sources/Foundation/NSURL.swift

@@ -22,6 +22,8 @@ import Darwin
 import Glibc
 #elseif canImport(Musl)
 import Musl
+#elseif canImport(Android)
+import Android
 #endif
 
 // NOTE: this represents PLATFORM_PATH_STYLE

Sources/Foundation/Port.swift

@@ -107,7 +107,7 @@ fileprivate let FOUNDATION_SOCK_STREAM = SOCK_STREAM
 fileprivate let FOUNDATION_IPPROTO_TCP = IPPROTO_TCP
 #endif
 
-#if canImport(Glibc) && !os(Android) && !os(OpenBSD)
+#if canImport(Glibc) && !os(OpenBSD)
 import Glibc
 fileprivate let FOUNDATION_SOCK_STREAM = Int32(SOCK_STREAM.rawValue)
 fileprivate let FOUNDATION_IPPROTO_TCP = Int32(IPPROTO_TCP)
@@ -119,14 +119,19 @@ fileprivate let FOUNDATION_SOCK_STREAM = Int32(SOCK_STREAM)
 fileprivate let FOUNDATION_IPPROTO_TCP = Int32(IPPROTO_TCP)
 #endif
 
-#if canImport(Glibc) && os(Android) || os(OpenBSD)
+#if canImport(Glibc) && os(OpenBSD)
 import Glibc
 fileprivate let FOUNDATION_SOCK_STREAM = Int32(SOCK_STREAM)
 fileprivate let FOUNDATION_IPPROTO_TCP = Int32(IPPROTO_TCP)
 fileprivate let INADDR_ANY: in_addr_t = 0
-#if os(OpenBSD)
 fileprivate let INADDR_LOOPBACK = 0x7f000001
 #endif
+
+#if canImport(Android)
+import Android
+fileprivate let FOUNDATION_SOCK_STREAM = Int32(Android.SOCK_STREAM)
+fileprivate let FOUNDATION_IPPROTO_TCP = Int32(Android.IPPROTO_TCP)
+fileprivate let INADDR_ANY: in_addr_t = 0
 #endif
 
 

Sources/Foundation/Process.swift

@@ -18,6 +18,8 @@ import struct WinSDK.HANDLE
 
 #if canImport(Darwin)
 import Darwin
+#elseif canImport(Android)
+import Android
 #endif
 
 internal import Synchronization
@@ -940,6 +942,13 @@ open class Process: NSObject, @unchecked Sendable {
         var spawnAttrs: posix_spawnattr_t? = nil
 #else
         var spawnAttrs: posix_spawnattr_t = posix_spawnattr_t()
+#endif
+#if os(Android)
+        guard var spawnAttrs else {
+            throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno), userInfo: [
+                    NSURLErrorKey:self.executableURL!
+            ])
+        }
 #endif
         try _throwIfPosixError(posix_spawnattr_init(&spawnAttrs))
         try _throwIfPosixError(posix_spawnattr_setflags(&spawnAttrs, .init(POSIX_SPAWN_SETPGROUP)))

Sources/Foundation/Thread.swift

@@ -17,6 +17,8 @@ import WinSDK
 import Glibc
 #elseif canImport(Musl)
 import Musl
+#elseif canImport(Android)
+import Android
 #endif
 
 // WORKAROUND_SR9811

Sources/FoundationNetworking/HTTPCookie.swift

@@ -15,6 +15,8 @@ import Foundation
 
 #if os(Windows)
 import WinSDK
+#elseif canImport(Android)
+import Android
 #endif
 
 public struct HTTPCookiePropertyKey : RawRepresentable, Equatable, Hashable, Sendable {

Sources/plutil/main.swift

@@ -15,6 +15,9 @@ import Glibc
 #elseif canImport(Musl)
 import Foundation
 import Musl
+#elseif canImport(Android)
+import Foundation
+import Android
 #elseif canImport(CRT)
 import Foundation
 import CRT

Sources/xdgTestHelper/main.swift

@@ -19,6 +19,8 @@ import FoundationNetworking
 #endif
 #if os(Windows)
 import WinSDK
+#elseif os(Android)
+import Android
 #endif
 
 enum HelperCheckStatus : Int32 {

Tests/Foundation/FTPServer.swift

@@ -15,6 +15,8 @@ import Dispatch
     import Glibc
 #elseif canImport(Darwin)
     import Darwin
+#elseif canImport(Android)
+    import Android
 #endif
 
 final class ServerSemaphore : Sendable {

Tests/Foundation/HTTPServer.swift

@@ -21,6 +21,8 @@ import Dispatch
     import Darwin
 #elseif canImport(Glibc)
     import Glibc
+#elseif canImport(Android)
+    import Android
 #endif
 
 #if !os(Windows)

Tests/Foundation/TestFileHandle.swift

@@ -19,6 +19,8 @@
 import Dispatch
 #if os(Windows)
 import WinSDK
+#elseif canImport(Android)
+import Android
 #endif
 
 class TestFileHandle : XCTestCase {
@@ -111,7 +113,7 @@ class TestFileHandle : XCTestCase {
 #else
         var fds: [Int32] = [-1, -1]
         fds.withUnsafeMutableBufferPointer { (pointer) -> Void in
-            pipe(pointer.baseAddress)
+            pipe(pointer.baseAddress!)
         }
 
         close(fds[1])

Tests/Foundation/TestNSData.swift

@@ -10,6 +10,10 @@
 import XCTest
 @testable import Foundation
 
+#if canImport(Android)
+import Android
+#endif
+
 class TestNSData: XCTestCase {
 
     class AllOnesImmutableData : NSData {
@@ -213,6 +217,8 @@ class TestNSData: XCTestCase {
                 let permission = try fileManager.attributesOfItem(atPath: url.path)[.posixPermissions] as? Int
 #if canImport(Darwin)
                 let expected = Int(S_IRUSR) | Int(S_IWUSR) | Int(S_IRGRP) | Int(S_IWGRP) | Int(S_IROTH) | Int(S_IWOTH)
+#elseif canImport(Android)
+                let expected = Int(Android.S_IRUSR) | Int(Android.S_IWUSR) | Int(Android.S_IRGRP) | Int(Android.S_IWGRP) | Int(Android.S_IROTH) | Int(Android.S_IWOTH)
 #else
                 let expected = Int(Glibc.S_IRUSR) | Int(Glibc.S_IWUSR) | Int(Glibc.S_IRGRP) | Int(Glibc.S_IWGRP) | Int(Glibc.S_IROTH) | Int(Glibc.S_IWOTH)
 #endif
@@ -236,6 +242,8 @@ class TestNSData: XCTestCase {
                 let permission = try fileManager.attributesOfItem(atPath: url.path)[.posixPermissions] as? Int
 #if canImport(Darwin)
                 let expected = Int(S_IRUSR) | Int(S_IWUSR) | Int(S_IRGRP) | Int(S_IWGRP) | Int(S_IROTH) | Int(S_IWOTH)
+#elseif canImport(Android)
+                let expected = Int(Android.S_IRUSR) | Int(Android.S_IWUSR) | Int(Android.S_IRGRP) | Int(Android.S_IWGRP) | Int(Android.S_IROTH) | Int(Android.S_IWOTH)
 #else
                 let expected = Int(Glibc.S_IRUSR) | Int(Glibc.S_IWUSR) | Int(Glibc.S_IRGRP) | Int(Glibc.S_IWGRP) | Int(Glibc.S_IROTH) | Int(Glibc.S_IWOTH)
 #endif

Tests/Foundation/TestProcess.swift

@@ -8,6 +8,9 @@
 //
 
 import Synchronization
+#if canImport(Android)
+import Android
+#endif
 
 class TestProcess : XCTestCase {
 

Tests/Foundation/TestSocketPort.swift

@@ -8,6 +8,8 @@
 //
 #if os(Windows)
 import WinSDK
+#elseif canImport(Android)
+import Android
 #endif
 
 class TestPortDelegateWithBlock: NSObject, PortDelegate {