1 /* 2 * Copyright (c) 2016 Linux Test Project 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of 7 * the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * Check that pause() returns on signal with errno == EINTR. 15 */ 16 #include <errno.h> 17 #include <signal.h> 18 #include <stdlib.h> 19 #include "tst_test.h" 20 21 static void sig_handler(int sig LTP_ATTRIBUTE_UNUSED) 22 { 23 } 24 25 static void do_child(void) 26 { 27 SAFE_SIGNAL(SIGINT, sig_handler); 28 29 TST_CHECKPOINT_WAKE(0); 30 31 TEST(pause()); 32 if (TEST_RETURN != -1) 33 tst_res(TFAIL, "pause() succeeded unexpectedly"); 34 else if (TEST_ERRNO == EINTR) 35 tst_res(TPASS, "pause() interrupted with EINTR"); 36 else 37 tst_res(TFAIL | TTERRNO, "pause() unexpected errno"); 38 39 TST_CHECKPOINT_WAKE(0); 40 exit(0); 41 } 42 43 static void do_test(void) 44 { 45 int pid, status; 46 47 pid = SAFE_FORK(); 48 if (pid == 0) 49 do_child(); 50 51 TST_CHECKPOINT_WAIT(0); 52 TST_PROCESS_STATE_WAIT(pid, 'S'); 53 kill(pid, SIGINT); 54 55 /* 56 * TST_CHECKPOINT_WAIT has built-in timeout, if pause() doesn't return, 57 * this checkpoint call will reliably end the test. 58 */ 59 TST_CHECKPOINT_WAIT(0); 60 SAFE_WAIT(&status); 61 } 62 63 static struct tst_test test = { 64 .forks_child = 1, 65 .needs_checkpoints = 1, 66 .test_all = do_test, 67 }; 68
