| /* 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. |
| */ |
| |
| #if !defined(_WIN32) |
| |
| #include "uv.h" |
| #include "task.h" |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <sys/resource.h> |
| #include <unistd.h> |
| |
| static void connection_cb(uv_stream_t* server_handle, int status); |
| static void connect_cb(uv_connect_t* req, int status); |
| |
| static const int maxfd = 31; |
| static unsigned connect_cb_called; |
| static uv_tcp_t server_handle; |
| static uv_tcp_t client_handle; |
| |
| |
| TEST_IMPL(emfile) { |
| struct sockaddr_in addr; |
| struct rlimit limits; |
| uv_connect_t connect_req; |
| uv_loop_t* loop; |
| int first_fd; |
| |
| loop = uv_default_loop(); |
| addr = uv_ip4_addr("127.0.0.1", TEST_PORT); |
| ASSERT(0 == uv_tcp_init(loop, &server_handle)); |
| ASSERT(0 == uv_tcp_init(loop, &client_handle)); |
| ASSERT(0 == uv_tcp_bind(&server_handle, addr)); |
| ASSERT(0 == uv_listen((uv_stream_t*) &server_handle, 8, connection_cb)); |
| |
| /* Lower the file descriptor limit and use up all fds save one. */ |
| limits.rlim_cur = limits.rlim_max = maxfd + 1; |
| if (setrlimit(RLIMIT_NOFILE, &limits)) { |
| perror("setrlimit(RLIMIT_NOFILE)"); |
| ASSERT(0); |
| } |
| |
| /* Remember the first one so we can clean up afterwards. */ |
| do |
| first_fd = dup(0); |
| while (first_fd == -1 && errno == EINTR); |
| ASSERT(first_fd > 0); |
| |
| while (dup(0) != -1 || errno == EINTR); |
| ASSERT(errno == EMFILE); |
| close(maxfd); |
| |
| /* Now connect and use up the last available file descriptor. The EMFILE |
| * handling logic in src/unix/stream.c should ensure that connect_cb() runs |
| * whereas connection_cb() should *not* run. |
| */ |
| ASSERT(0 == uv_tcp_connect(&connect_req, &client_handle, addr, connect_cb)); |
| ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT)); |
| ASSERT(1 == connect_cb_called); |
| |
| /* Close the dups again. Ignore errors in the unlikely event that the |
| * file descriptors were not contiguous. |
| */ |
| while (first_fd < maxfd) { |
| close(first_fd); |
| first_fd += 1; |
| } |
| |
| MAKE_VALGRIND_HAPPY(); |
| return 0; |
| } |
| |
| |
| static void connection_cb(uv_stream_t* server_handle, int status) { |
| ASSERT(0 && "connection_cb should not be called."); |
| } |
| |
| |
| static void connect_cb(uv_connect_t* req, int status) { |
| /* |status| should equal 0 because the connection should have been accepted, |
| * it's just that the server immediately closes it again. |
| */ |
| ASSERT(0 == status); |
| connect_cb_called += 1; |
| uv_close((uv_handle_t*) &server_handle, NULL); |
| uv_close((uv_handle_t*) &client_handle, NULL); |
| } |
| |
| #endif /* !defined(_WIN32) */ |