1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 #ifndef UV_UNIX_INTERNAL_H_
23 #define UV_UNIX_INTERNAL_H_
25 #include "uv-common.h"
28 #include <limits.h> /* _POSIX_PATH_MAX, PATH_MAX */
29 #include <stdlib.h> /* abort */
30 #include <string.h> /* strrchr */
31 #include <fcntl.h> /* O_CLOEXEC and O_NONBLOCK, if supported. */
34 #include <sys/socket.h>
36 #if defined(__STRICT_ANSI__)
37 # define inline __inline
40 #if defined(__linux__)
41 # include "linux-syscalls.h"
42 #endif /* __linux__ */
45 # include "os390-syscalls.h"
49 # include <sys/port.h>
54 # define reqevents events
55 # define rtnevents revents
56 # include <sys/poll.h>
61 #if defined(__APPLE__) && !TARGET_OS_IPHONE
62 # include <AvailabilityMacros.h>
66 * Define common detection for active Thread Sanitizer
67 * - clang uses __has_feature(thread_sanitizer)
68 * - gcc-7+ uses __SANITIZE_THREAD__
70 #if defined(__has_feature)
71 # if __has_feature(thread_sanitizer)
72 # define __SANITIZE_THREAD__ 1
77 # define UV__PATH_MAX PATH_MAX
79 # define UV__PATH_MAX 8192
82 #if defined(CMAKE_BOOTSTRAP)
83 # undef pthread_atfork
84 # define pthread_atfork(prepare, parent, child) \
85 uv__pthread_atfork(prepare, parent, child)
86 int uv__pthread_atfork(void (*prepare)(void), void (*parent)(void),
88 # undef pthread_sigmask
89 # define pthread_sigmask(how, set, oldset) \
90 uv__pthread_sigmask(how, set, oldset)
91 int uv__pthread_sigmask(int how, const sigset_t* set, sigset_t* oset);
92 #elif defined(__ANDROID__)
93 int uv__pthread_sigmask(int how, const sigset_t* set, sigset_t* oset);
94 # ifdef pthread_sigmask
95 # undef pthread_sigmask
97 # define pthread_sigmask(how, set, oldset) uv__pthread_sigmask(how, set, oldset)
100 #define ACCESS_ONCE(type, var) \
101 (*(volatile type*) &(var))
103 #define ROUND_UP(a, b) \
104 ((a) % (b) ? ((a) + (b)) - ((a) % (b)) : (a))
106 #define UNREACHABLE() \
108 assert(0 && "unreachable code"); \
113 #define SAVE_ERRNO(block) \
115 int _saved_errno = errno; \
116 do { block; } while (0); \
117 errno = _saved_errno; \
121 /* The __clang__ and __INTEL_COMPILER checks are superfluous because they
122 * define __GNUC__. They are here to convey to you, dear reader, that these
123 * macros are enabled when compiling with clang or icc.
125 #if defined(__clang__) || \
126 defined(__GNUC__) || \
127 defined(__INTEL_COMPILER)
128 # define UV_UNUSED(declaration) __attribute__((unused)) declaration
130 # define UV_UNUSED(declaration) declaration
133 /* Leans on the fact that, on Linux, POLLRDHUP == EPOLLRDHUP. */
135 # define UV__POLLRDHUP POLLRDHUP
137 # define UV__POLLRDHUP 0x2000
141 # define UV__POLLPRI POLLPRI
143 # define UV__POLLPRI 0
146 #if !defined(O_CLOEXEC) && defined(__FreeBSD__)
148 * It may be that we are just missing `__POSIX_VISIBLE >= 200809`.
149 * Try using fixed value const and give up, if it doesn't work
151 # define O_CLOEXEC 0x00100000
154 typedef struct uv__stream_queued_fds_s uv__stream_queued_fds_t;
158 UV_LOOP_BLOCK_SIGPROF = 0x1,
159 UV_LOOP_REAP_CHILDREN = 0x2
162 /* flags of excluding ifaddr */
169 UV_CLOCK_PRECISE = 0, /* Use the highest resolution clock available. */
170 UV_CLOCK_FAST = 1 /* Use the fastest clock with <= 1ms granularity. */
173 struct uv__stream_queued_fds_s {
180 #if defined(_AIX) || \
181 defined(__APPLE__) || \
182 defined(__DragonFly__) || \
183 defined(__FreeBSD__) || \
184 defined(__FreeBSD_kernel__) || \
185 defined(__linux__) || \
186 defined(__OpenBSD__) || \
188 #define uv__nonblock uv__nonblock_ioctl
189 #define UV__NONBLOCK_IS_IOCTL 1
191 #define uv__nonblock uv__nonblock_fcntl
192 #define UV__NONBLOCK_IS_IOCTL 0
195 /* On Linux, uv__nonblock_fcntl() and uv__nonblock_ioctl() do not commute
196 * when O_NDELAY is not equal to O_NONBLOCK. Case in point: linux/sparc32
197 * and linux/sparc64, where O_NDELAY is O_NONBLOCK + another bit.
199 * Libuv uses uv__nonblock_fcntl() directly sometimes so ensure that it
200 * commutes with uv__nonblock().
202 #if defined(__linux__) && O_NDELAY != O_NONBLOCK
204 #define uv__nonblock uv__nonblock_fcntl
208 int uv__cloexec(int fd, int set);
209 int uv__nonblock_ioctl(int fd, int set);
210 int uv__nonblock_fcntl(int fd, int set);
211 int uv__close(int fd); /* preserves errno */
212 int uv__close_nocheckstdio(int fd);
213 int uv__close_nocancel(int fd);
214 int uv__socket(int domain, int type, int protocol);
215 ssize_t uv__recvmsg(int fd, struct msghdr *msg, int flags);
216 void uv__make_close_pending(uv_handle_t* handle);
217 int uv__getiovmax(void);
219 void uv__io_init(uv__io_t* w, uv__io_cb cb, int fd);
220 void uv__io_start(uv_loop_t* loop, uv__io_t* w, unsigned int events);
221 void uv__io_stop(uv_loop_t* loop, uv__io_t* w, unsigned int events);
222 void uv__io_close(uv_loop_t* loop, uv__io_t* w);
223 void uv__io_feed(uv_loop_t* loop, uv__io_t* w);
224 int uv__io_active(const uv__io_t* w, unsigned int events);
225 int uv__io_check_fd(uv_loop_t* loop, int fd);
226 void uv__io_poll(uv_loop_t* loop, int timeout); /* in milliseconds or -1 */
227 int uv__io_fork(uv_loop_t* loop);
228 int uv__fd_exists(uv_loop_t* loop, int fd);
231 void uv__async_stop(uv_loop_t* loop);
232 int uv__async_fork(uv_loop_t* loop);
236 void uv__run_idle(uv_loop_t* loop);
237 void uv__run_check(uv_loop_t* loop);
238 void uv__run_prepare(uv_loop_t* loop);
241 void uv__stream_init(uv_loop_t* loop, uv_stream_t* stream,
242 uv_handle_type type);
243 int uv__stream_open(uv_stream_t*, int fd, int flags);
244 void uv__stream_destroy(uv_stream_t* stream);
245 #if defined(__APPLE__)
246 int uv__stream_try_select(uv_stream_t* stream, int* fd);
247 #endif /* defined(__APPLE__) */
248 void uv__server_io(uv_loop_t* loop, uv__io_t* w, unsigned int events);
249 int uv__accept(int sockfd);
250 int uv__dup2_cloexec(int oldfd, int newfd);
251 int uv__open_cloexec(const char* path, int flags);
252 int uv__slurp(const char* filename, char* buf, size_t len);
255 int uv__tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb);
256 int uv__tcp_nodelay(int fd, int on);
257 int uv__tcp_keepalive(int fd, int on, unsigned int delay);
260 int uv__pipe_listen(uv_pipe_t* handle, int backlog, uv_connection_cb cb);
263 void uv__signal_close(uv_signal_t* handle);
264 void uv__signal_global_once_init(void);
265 void uv__signal_loop_cleanup(uv_loop_t* loop);
266 int uv__signal_loop_fork(uv_loop_t* loop);
268 /* platform specific */
269 uint64_t uv__hrtime(uv_clocktype_t type);
270 int uv__kqueue_init(uv_loop_t* loop);
271 int uv__epoll_init(uv_loop_t* loop);
272 int uv__platform_loop_init(uv_loop_t* loop);
273 void uv__platform_loop_delete(uv_loop_t* loop);
274 void uv__platform_invalidate_fd(uv_loop_t* loop, int fd);
277 void uv__async_close(uv_async_t* handle);
278 void uv__check_close(uv_check_t* handle);
279 void uv__fs_event_close(uv_fs_event_t* handle);
280 void uv__idle_close(uv_idle_t* handle);
281 void uv__pipe_close(uv_pipe_t* handle);
282 void uv__poll_close(uv_poll_t* handle);
283 void uv__prepare_close(uv_prepare_t* handle);
284 void uv__process_close(uv_process_t* handle);
285 void uv__stream_close(uv_stream_t* handle);
286 void uv__tcp_close(uv_tcp_t* handle);
287 size_t uv__thread_stack_size(void);
288 void uv__udp_close(uv_udp_t* handle);
289 void uv__udp_finish_close(uv_udp_t* handle);
290 FILE* uv__open_file(const char* path);
291 int uv__getpwuid_r(uv_passwd_t* pwd);
292 int uv__search_path(const char* prog, char* buf, size_t* buflen);
293 void uv__wait_children(uv_loop_t* loop);
296 int uv__random_devurandom(void* buf, size_t buflen);
297 int uv__random_getrandom(void* buf, size_t buflen);
298 int uv__random_getentropy(void* buf, size_t buflen);
299 int uv__random_readpath(const char* path, void* buf, size_t buflen);
300 int uv__random_sysctl(void* buf, size_t buflen);
302 #if defined(__APPLE__) && !defined(CMAKE_BOOTSTRAP)
303 int uv___stream_fd(const uv_stream_t* handle);
304 #define uv__stream_fd(handle) (uv___stream_fd((const uv_stream_t*) (handle)))
306 #define uv__stream_fd(handle) ((handle)->io_watcher.fd)
307 #endif /* defined(__APPLE__) */
309 int uv__make_pipe(int fds[2], int flags);
311 #if defined(__APPLE__)
313 int uv__fsevents_init(uv_fs_event_t* handle);
314 int uv__fsevents_close(uv_fs_event_t* handle);
315 void uv__fsevents_loop_delete(uv_loop_t* loop);
317 #endif /* defined(__APPLE__) */
319 UV_UNUSED(static void uv__update_time(uv_loop_t* loop)) {
320 /* Use a fast time source if available. We only need millisecond precision.
322 loop->time = uv__hrtime(UV_CLOCK_FAST) / 1000000;
325 UV_UNUSED(static char* uv__basename_r(const char* path)) {
328 s = strrchr(path, '/');
335 #if defined(__linux__)
336 int uv__inotify_fork(uv_loop_t* loop, void* old_watchers);
339 typedef int (*uv__peersockfunc)(int, struct sockaddr*, socklen_t*);
341 int uv__getsockpeername(const uv_handle_t* handle,
342 uv__peersockfunc func,
343 struct sockaddr* name,
346 #if defined(__linux__) || \
347 defined(__FreeBSD__) || \
348 defined(__FreeBSD_kernel__) || \
349 defined(__DragonFly__)
352 struct msghdr msg_hdr;
353 unsigned int msg_len;
356 int uv__recvmmsg(int fd, struct uv__mmsghdr* mmsg, unsigned int vlen);
357 int uv__sendmmsg(int fd, struct uv__mmsghdr* mmsg, unsigned int vlen);
363 #if !defined(_POSIX_VERSION) || _POSIX_VERSION < 200809L
364 size_t strnlen(const char* s, size_t maxlen);
368 #if defined(__FreeBSD__)
370 uv__fs_copy_file_range(int fd_in,
379 #endif /* UV_UNIX_INTERNAL_H_ */