/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#ifndef UV_UNIX_H

#define UV_UNIX_H

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <dirent.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <netinet/tcp.h>

#include <arpa/inet.h>

#include <netdb.h>  /* MAXHOSTNAMELEN on Solaris */

#include <termios.h>

#include <pwd.h>

#if !defined(__MVS__)

#include <semaphore.h>

#include <sys/param.h> /* MAXHOSTNAMELEN on Linux and the BSDs */

#endif

#include <pthread.h>

#include <signal.h>

#include "uv/threadpool.h"

#if defined(__linux__)

# include "uv/linux.h"

#elif defined (__MVS__)

# include "uv/os390.h"

#elif defined(__PASE__)  /* __PASE__ and _AIX are both defined on IBM i */

# include "uv/posix.h"  /* IBM i needs uv/posix.h, not uv/aix.h */

#elif defined(_AIX)

# include "uv/aix.h"

#elif defined(__sun)

# include "uv/sunos.h"

#elif defined(__APPLE__)

# include "uv/darwin.h"

#elif defined(__DragonFly__)       || \

      defined(__FreeBSD__)         || \

      defined(__FreeBSD_kernel__)  || \

      defined(__OpenBSD__)         || \

      defined(__NetBSD__)

# include "uv/bsd.h"

#elif defined(__CYGWIN__) || \

      defined(__MSYS__)   || \

      defined(__GNU__)

# include "uv/posix.h"

#elif defined(__HAIKU__)

# include "uv/posix.h"

#endif

#ifndef NI_MAXHOST

# define NI_MAXHOST 1025

#endif

#ifndef NI_MAXSERV

# define NI_MAXSERV 32

#endif

#ifndef UV_IO_PRIVATE_PLATFORM_FIELDS

# define UV_IO_PRIVATE_PLATFORM_FIELDS /* empty */

#endif

struct uv__io_s;

struct uv_loop_s;

typedef void (*uv__io_cb)(struct uv_loop_s* loop,

                          struct uv__io_s* w,

                          unsigned int events);

typedef struct uv__io_s uv__io_t;

struct uv__io_s {

  uv__io_cb cb;

  void* pending_queue[2];

  void* watcher_queue[2];

  unsigned int pevents; /* Pending event mask i.e. mask at next tick. */

  unsigned int events;  /* Current event mask. */

  int fd;

  UV_IO_PRIVATE_PLATFORM_FIELDS

};

#ifndef UV_PLATFORM_SEM_T

# define UV_PLATFORM_SEM_T sem_t

#endif

#ifndef UV_PLATFORM_LOOP_FIELDS

# define UV_PLATFORM_LOOP_FIELDS /* empty */

#endif

#ifndef UV_PLATFORM_FS_EVENT_FIELDS

# define UV_PLATFORM_FS_EVENT_FIELDS /* empty */

#endif

#ifndef UV_STREAM_PRIVATE_PLATFORM_FIELDS

# define UV_STREAM_PRIVATE_PLATFORM_FIELDS /* empty */

#endif

/* Note: May be cast to struct iovec. See writev(2). */

typedef struct uv_buf_t {

  char* base;

  size_t len;

} uv_buf_t;

typedef int uv_file;

typedef int uv_os_sock_t;

typedef int uv_os_fd_t;

typedef pid_t uv_pid_t;

#define UV_ONCE_INIT PTHREAD_ONCE_INIT

typedef pthread_once_t uv_once_t;

typedef pthread_t uv_thread_t;

typedef pthread_mutex_t uv_mutex_t;

typedef pthread_rwlock_t uv_rwlock_t;

typedef UV_PLATFORM_SEM_T uv_sem_t;

typedef pthread_cond_t uv_cond_t;

typedef pthread_key_t uv_key_t;

/* Note: guard clauses should match uv_barrier_init's in src/unix/thread.c. */

#if defined(_AIX) || \

    defined(__OpenBSD__) || \

    !defined(PTHREAD_BARRIER_SERIAL_THREAD)

/* TODO(bnoordhuis) Merge into uv_barrier_t in v2. */

struct _uv_barrier {

  uv_mutex_t mutex;

  uv_cond_t cond;

  unsigned threshold;

  unsigned in;

  unsigned out;

};

typedef struct {

  struct _uv_barrier* b;

# if defined(PTHREAD_BARRIER_SERIAL_THREAD)

  /* TODO(bnoordhuis) Remove padding in v2. */

  char pad[sizeof(pthread_barrier_t) - sizeof(struct _uv_barrier*)];

# endif

} uv_barrier_t;

#else

typedef pthread_barrier_t uv_barrier_t;

#endif

/* Platform-specific definitions for uv_spawn support. */

typedef gid_t uv_gid_t;

typedef uid_t uv_uid_t;

typedef struct dirent uv__dirent_t;

#define UV_DIR_PRIVATE_FIELDS \

  DIR* dir;

#if defined(DT_UNKNOWN)

# define HAVE_DIRENT_TYPES

# if defined(DT_REG)

#  define UV__DT_FILE DT_REG

# else

#  define UV__DT_FILE -1

# endif

# if defined(DT_DIR)

#  define UV__DT_DIR DT_DIR

# else

#  define UV__DT_DIR -2

# endif

# if defined(DT_LNK)

#  define UV__DT_LINK DT_LNK

# else

#  define UV__DT_LINK -3

# endif

# if defined(DT_FIFO)

#  define UV__DT_FIFO DT_FIFO

# else

#  define UV__DT_FIFO -4

# endif

# if defined(DT_SOCK)

#  define UV__DT_SOCKET DT_SOCK

# else

#  define UV__DT_SOCKET -5

# endif

# if defined(DT_CHR)

#  define UV__DT_CHAR DT_CHR

# else

#  define UV__DT_CHAR -6

# endif

# if defined(DT_BLK)

#  define UV__DT_BLOCK DT_BLK

# else

#  define UV__DT_BLOCK -7

# endif

#endif

/* Platform-specific definitions for uv_dlopen support. */

#define UV_DYNAMIC /* empty */

typedef struct {

  void* handle;

  char* errmsg;

} uv_lib_t;

#define UV_LOOP_PRIVATE_FIELDS                                                \

  unsigned long flags;                                                        \

  int backend_fd;                                                             \

  void* pending_queue[2];                                                     \

  void* watcher_queue[2];                                                     \

  uv__io_t** watchers;                                                        \

  unsigned int nwatchers;                                                     \

  unsigned int nfds;                                                          \

  void* wq[2];                                                                \

  uv_mutex_t wq_mutex;                                                        \

  uv_async_t wq_async;                                                        \

  uv_rwlock_t cloexec_lock;                                                   \

  uv_handle_t* closing_handles;                                               \

  void* process_handles[2];                                                   \

  void* prepare_handles[2];                                                   \

  void* check_handles[2];                                                     \

  void* idle_handles[2];                                                      \

  void* async_handles[2];                                                     \

  void (*async_unused)(void);  /* TODO(bnoordhuis) Remove in libuv v2. */     \

  uv__io_t async_io_watcher;                                                  \

  int async_wfd;                                                              \

  struct {                                                                    \

    void* min;                                                                \

    unsigned int nelts;                                                       \

  } timer_heap;                                                               \

  uint64_t timer_counter;                                                     \

  uint64_t time;                                                              \

  int signal_pipefd[2];                                                       \

  uv__io_t signal_io_watcher;                                                 \

  uv_signal_t child_watcher;                                                  \

  int emfile_fd;                                                              \

  UV_PLATFORM_LOOP_FIELDS                                                     \

#define UV_REQ_TYPE_PRIVATE /* empty */

#define UV_REQ_PRIVATE_FIELDS  /* empty */

#define UV_PRIVATE_REQ_TYPES /* empty */

#define UV_WRITE_PRIVATE_FIELDS                                               \

  void* queue[2];                                                             \

  unsigned int write_index;                                                   \

  uv_buf_t* bufs;                                                             \

  unsigned int nbufs;                                                         \

  int error;                                                                  \

  uv_buf_t bufsml[4];                                                         \

#define UV_CONNECT_PRIVATE_FIELDS                                             \

  void* queue[2];                                                             \

#define UV_SHUTDOWN_PRIVATE_FIELDS /* empty */

#define UV_UDP_SEND_PRIVATE_FIELDS                                            \

  void* queue[2];                                                             \

  struct sockaddr_storage addr;                                               \

  unsigned int nbufs;                                                         \

  uv_buf_t* bufs;                                                             \

  ssize_t status;                                                             \

  uv_udp_send_cb send_cb;                                                     \

  uv_buf_t bufsml[4];                                                         \

#define UV_HANDLE_PRIVATE_FIELDS                                              \

  uv_handle_t* next_closing;                                                  \

  unsigned int flags;                                                         \

#define UV_STREAM_PRIVATE_FIELDS                                              \

  uv_connect_t *connect_req;                                                  \

  uv_shutdown_t *shutdown_req;                                                \

  uv__io_t io_watcher;                                                        \

  void* write_queue[2];                                                       \

  void* write_completed_queue[2];                                             \

  uv_connection_cb connection_cb;                                             \

  int delayed_error;                                                          \

  int accepted_fd;                                                            \

  void* queued_fds;                                                           \

  UV_STREAM_PRIVATE_PLATFORM_FIELDS                                           \

#define UV_TCP_PRIVATE_FIELDS /* empty */

#define UV_UDP_PRIVATE_FIELDS                                                 \

  uv_alloc_cb alloc_cb;                                                       \

  uv_udp_recv_cb recv_cb;                                                     \

  uv__io_t io_watcher;                                                        \

  void* write_queue[2];                                                       \

  void* write_completed_queue[2];                                             \

#define UV_PIPE_PRIVATE_FIELDS                                                \

  const char* pipe_fname; /* strdup'ed */

#define UV_POLL_PRIVATE_FIELDS                                                \

  uv__io_t io_watcher;

#define UV_PREPARE_PRIVATE_FIELDS                                             \

  uv_prepare_cb prepare_cb;                                                   \

  void* queue[2];                                                             \

#define UV_CHECK_PRIVATE_FIELDS                                               \

  uv_check_cb check_cb;                                                       \

  void* queue[2];                                                             \

#define UV_IDLE_PRIVATE_FIELDS                                                \

  uv_idle_cb idle_cb;                                                         \

  void* queue[2];                                                             \

#define UV_ASYNC_PRIVATE_FIELDS                                               \

  uv_async_cb async_cb;                                                       \

  void* queue[2];                                                             \

  int pending;                                                                \

#define UV_TIMER_PRIVATE_FIELDS                                               \

  uv_timer_cb timer_cb;                                                       \

  void* heap_node[3];                                                         \

  uint64_t timeout;                                                           \

  uint64_t repeat;                                                            \

  uint64_t start_id;

#define UV_GETADDRINFO_PRIVATE_FIELDS                                         \

  struct uv__work work_req;                                                   \

  uv_getaddrinfo_cb cb;                                                       \

  struct addrinfo* hints;                                                     \

  char* hostname;                                                             \

  char* service;                                                              \

  struct addrinfo* addrinfo;                                                  \

  int retcode;

#define UV_GETNAMEINFO_PRIVATE_FIELDS                                         \

  struct uv__work work_req;                                                   \

  uv_getnameinfo_cb getnameinfo_cb;                                           \

  struct sockaddr_storage storage;                                            \

  int flags;                                                                  \

  char host[NI_MAXHOST];                                                      \

  char service[NI_MAXSERV];                                                   \

  int retcode;

#define UV_PROCESS_PRIVATE_FIELDS                                             \

  void* queue[2];                                                             \

  int status;                                                                 \

#define UV_FS_PRIVATE_FIELDS                                                  \

  const char *new_path;                                                       \

  uv_file file;                                                               \

  int flags;                                                                  \

  mode_t mode;                                                                \

  unsigned int nbufs;                                                         \

  uv_buf_t* bufs;                                                             \

  off_t off;                                                                  \

  uv_uid_t uid;                                                               \

  uv_gid_t gid;                                                               \

  double atime;                                                               \

  double mtime;                                                               \

  struct uv__work work_req;                                                   \

  uv_buf_t bufsml[4];                                                         \

#define UV_WORK_PRIVATE_FIELDS                                                \

  struct uv__work work_req;

#define UV_TTY_PRIVATE_FIELDS                                                 \

  struct termios orig_termios;                                                \

  int mode;

#define UV_SIGNAL_PRIVATE_FIELDS                                              \

  /* RB_ENTRY(uv_signal_s) tree_entry; */                                     \

  struct {                                                                    \

    struct uv_signal_s* rbe_left;                                             \

    struct uv_signal_s* rbe_right;                                            \

    struct uv_signal_s* rbe_parent;                                           \

    int rbe_color;                                                            \

  } tree_entry;                                                               \

  /* Use two counters here so we don have to fiddle with atomics. */          \

  unsigned int caught_signals;                                                \

  unsigned int dispatched_signals;

#define UV_FS_EVENT_PRIVATE_FIELDS                                            \

  uv_fs_event_cb cb;                                                          \

  UV_PLATFORM_FS_EVENT_FIELDS                                                 \

/* fs open() flags supported on this platform: */

#if defined(O_APPEND)

# define UV_FS_O_APPEND       O_APPEND

#else

# define UV_FS_O_APPEND       0

#endif

#if defined(O_CREAT)

# define UV_FS_O_CREAT        O_CREAT

#else

# define UV_FS_O_CREAT        0

#endif

#if defined(__linux__) && defined(__arm__)

# define UV_FS_O_DIRECT       0x10000

#elif defined(__linux__) && defined(__m68k__)

# define UV_FS_O_DIRECT       0x10000

#elif defined(__linux__) && defined(__mips__)

# define UV_FS_O_DIRECT       0x08000

#elif defined(__linux__) && defined(__powerpc__)

# define UV_FS_O_DIRECT       0x20000

#elif defined(__linux__) && defined(__s390x__)

# define UV_FS_O_DIRECT       0x04000

#elif defined(__linux__) && defined(__x86_64__)

# define UV_FS_O_DIRECT       0x04000

#elif defined(O_DIRECT)

# define UV_FS_O_DIRECT       O_DIRECT

#else

# define UV_FS_O_DIRECT       0

#endif

#if defined(O_DIRECTORY)

# define UV_FS_O_DIRECTORY    O_DIRECTORY

#else

# define UV_FS_O_DIRECTORY    0

#endif

#if defined(O_DSYNC)

# define UV_FS_O_DSYNC        O_DSYNC

#else

# define UV_FS_O_DSYNC        0

#endif

#if defined(O_EXCL)

# define UV_FS_O_EXCL         O_EXCL

#else

# define UV_FS_O_EXCL         0

#endif

#if defined(O_EXLOCK)

# define UV_FS_O_EXLOCK       O_EXLOCK

#else

# define UV_FS_O_EXLOCK       0

#endif

#if defined(O_NOATIME)

# define UV_FS_O_NOATIME      O_NOATIME

#else

# define UV_FS_O_NOATIME      0

#endif

#if defined(O_NOCTTY)

# define UV_FS_O_NOCTTY       O_NOCTTY

#else

# define UV_FS_O_NOCTTY       0

#endif

#if defined(O_NOFOLLOW)

# define UV_FS_O_NOFOLLOW     O_NOFOLLOW

#else

# define UV_FS_O_NOFOLLOW     0

#endif

#if defined(O_NONBLOCK)

# define UV_FS_O_NONBLOCK     O_NONBLOCK

#else

# define UV_FS_O_NONBLOCK     0

#endif

#if defined(O_RDONLY)

# define UV_FS_O_RDONLY       O_RDONLY

#else

# define UV_FS_O_RDONLY       0

#endif

#if defined(O_RDWR)

# define UV_FS_O_RDWR         O_RDWR

#else

# define UV_FS_O_RDWR         0

#endif

#if defined(O_SYMLINK)

# define UV_FS_O_SYMLINK      O_SYMLINK

#else

# define UV_FS_O_SYMLINK      0

#endif

#if defined(O_SYNC)

# define UV_FS_O_SYNC         O_SYNC

#else

# define UV_FS_O_SYNC         0

#endif

#if defined(O_TRUNC)

# define UV_FS_O_TRUNC        O_TRUNC

#else

# define UV_FS_O_TRUNC        0

#endif

#if defined(O_WRONLY)

# define UV_FS_O_WRONLY       O_WRONLY

#else

# define UV_FS_O_WRONLY       0

#endif

/* fs open() flags supported on other platforms: */

#define UV_FS_O_FILEMAP       0

#define UV_FS_O_RANDOM        0

#define UV_FS_O_SHORT_LIVED   0

#define UV_FS_O_SEQUENTIAL    0

#define UV_FS_O_TEMPORARY     0

#endif /* UV_UNIX_H */