| //===--- LibcOverlayShims.h - Static inline shims for POSIX functions. --*- C++ -*-===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Provide small wrappers for POSIX functionality that can't be used |
| // directly from Swift due to varargs or other issues. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SWIFT_STDLIB_SHIMS_LIBCOVERLAYSHIMS_H |
| #define SWIFT_STDLIB_SHIMS_LIBCOVERLAYSHIMS_H |
| |
| #include "Visibility.h" |
| |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| #include <errno.h> |
| #include <io.h> |
| typedef int mode_t; |
| #else |
| #include <semaphore.h> |
| #include <sys/ioctl.h> |
| #include <sys/types.h> |
| #endif |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| |
| #if __has_feature(nullability) |
| #pragma clang assume_nonnull begin |
| #endif |
| |
| // File control <fcntl.h> |
| #if !defined(_WIN32) || defined(__CYGWIN__) |
| static inline int _swift_stdlib_fcntl(int fd, int cmd, int value) { |
| return fcntl(fd, cmd, value); |
| } |
| |
| static inline int _swift_stdlib_fcntlPtr(int fd, int cmd, void* ptr) { |
| return fcntl(fd, cmd, ptr); |
| } |
| #endif |
| |
| // Environment |
| #if defined(__FreeBSD__) |
| static inline char * _Nullable * _Null_unspecified _swift_stdlib_getEnviron() { |
| extern char **environ; |
| return environ; |
| } |
| #elif defined(__APPLE__) |
| static inline char * _Nullable *_swift_stdlib_getEnviron() { |
| extern char * _Nullable **_NSGetEnviron(void); |
| return *_NSGetEnviron(); |
| } |
| #endif |
| |
| // System error numbers <errno.h> |
| static inline int _swift_stdlib_getErrno() { |
| return errno; |
| } |
| |
| static inline void _swift_stdlib_setErrno(int value) { |
| errno = value; |
| } |
| |
| // Semaphores <semaphore.h> |
| #if !defined(_WIN32) || defined(__CYGWIN__) |
| static inline sem_t *_stdlib_sem_open2(const char *name, int oflag) { |
| return sem_open(name, oflag); |
| } |
| |
| static inline sem_t *_stdlib_sem_open4(const char *name, int oflag, |
| mode_t mode, unsigned int value) { |
| return sem_open(name, oflag, mode, value); |
| } |
| |
| #endif // !(defined(_WIN32) && !defined(__CYGWIN__)) |
| |
| // I/O control <ioctl.h> |
| #if !defined(_WIN32) || defined(__CYGWIN__) |
| static inline int _swift_stdlib_ioctl(int fd, unsigned long int request, int value) { |
| return ioctl(fd, request, value); |
| } |
| |
| static inline int _swift_stdlib_ioctlPtr(int fd, unsigned long int request, void* ptr) { |
| return ioctl(fd, request, ptr); |
| } |
| #endif |
| |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| // Windows |
| static inline int _swift_stdlib_open(const char *path, int oflag, mode_t mode) { |
| return _open(path, oflag, (int)mode); |
| } |
| |
| #else |
| // not Windows |
| int static inline _swift_stdlib_open(const char *path, int oflag, mode_t mode) { |
| return open(path, oflag, mode); |
| } |
| |
| int static inline _swift_stdlib_openat(int fd, const char *path, int oflag, |
| mode_t mode) { |
| return openat(fd, path, oflag, mode); |
| } |
| #endif |
| |
| #if __has_feature(nullability) |
| #pragma clang assume_nonnull end |
| #endif |
| |
| #endif // SWIFT_STDLIB_SHIMS_LIBCOVERLAYSHIMS_H |