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1 /* Copyright libuv project contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "uv.h"
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23 #include "task.h"
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24
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25 #ifdef _WIN32
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26
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27 TEST_IMPL(iouring_pollhup) {
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28 RETURN_SKIP("Not on Windows.");
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29 }
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30
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31 #else /* !_WIN32 */
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32
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33 #include <unistd.h> /* close() */
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34
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35 static uv_pipe_t p1;
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36 static uv_pipe_t p2;
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37 static uv_idle_t idle_handle;
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38 static int iters;
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39 static int duped_fd;
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40 static int newpipefds[2];
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41
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42 static void alloc_buffer(uv_handle_t* handle,
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43 size_t suggested_size,
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44 uv_buf_t* buf) {
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45 static char slab[32];
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46 *buf = uv_buf_init(slab, sizeof(slab));
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47 }
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48
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49 static void read_data2(uv_stream_t* stream,
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50 ssize_t nread,
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51 const uv_buf_t* buf) {
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52 if (nread < 0) {
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53 ASSERT_EQ(nread, UV_EOF);
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54 ASSERT_OK(close(duped_fd));
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55 duped_fd = -1;
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56 uv_close((uv_handle_t*) &p2, NULL);
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57 uv_close((uv_handle_t*) &idle_handle, NULL);
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58 } else {
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59 /* If nread == 0 is because of POLLHUP received still from pipefds[0] file
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60 * description which is still referenced in duped_fd. It should not happen
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61 * if close(p1) was called after EPOLL_CTL_DEL.
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62 */
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63 ASSERT_GT(nread, 0);
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64 }
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65 }
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66
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67 static void idle_cb(uv_idle_t* handle) {
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68 if (++iters == 1) {
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69 ASSERT_OK(uv_pipe_open(&p2, newpipefds[0]));
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70 ASSERT_OK(uv_read_start((uv_stream_t*) &p2, alloc_buffer, read_data2));
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71 } else {
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72 ASSERT_OK(uv_idle_stop(handle));
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73 ASSERT_OK(close(newpipefds[1]));
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74 newpipefds[1] = -1;
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75 }
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76 }
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77
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78 static void read_data(uv_stream_t* stream,
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79 ssize_t nread,
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80 const uv_buf_t* buf) {
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81 ASSERT_EQ(nread, UV_EOF);
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82 uv_close((uv_handle_t*) stream, NULL);
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83 ASSERT_OK(uv_idle_start(&idle_handle, idle_cb));
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84 }
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85
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86 TEST_IMPL(iouring_pollhup) {
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87 uv_loop_t* loop;
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88 int pipefds[2];
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89
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90 loop = uv_default_loop();
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91 ASSERT_OK(uv_pipe_init(loop, &p1, 0));
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92 ASSERT_OK(uv_pipe_init(loop, &p2, 0));
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93 ASSERT_OK(uv_idle_init(loop, &idle_handle));
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94 ASSERT_OK(pipe(pipefds));
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95 ASSERT_OK(pipe(newpipefds));
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96
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97 ASSERT_OK(uv_pipe_open(&p1, pipefds[0]));
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98 duped_fd = dup(pipefds[0]);
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99 ASSERT_NE(duped_fd, -1);
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100
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101 ASSERT_OK(uv_read_start((uv_stream_t*) &p1, alloc_buffer, read_data));
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102 ASSERT_OK(close(pipefds[1])); /* Close write end, generate POLLHUP. */
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103 pipefds[1] = -1;
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104
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105 ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
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106
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107 MAKE_VALGRIND_HAPPY(uv_default_loop());
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108 return 0;
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109 }
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110
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111 #endif /* !_WIN32 */
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