1 /******************************************************************************/ 2 /* Copyright (c) Crackerjack Project., 2007 */ 3 /* */ 4 /* This program is free software; you can redistribute it and/or modify */ 5 /* it under the terms of the GNU General Public License as published by */ 6 /* the Free Software Foundation; either version 2 of the License, or */ 7 /* (at your option) any later version. */ 8 /* */ 9 /* This program is distributed in the hope that it will be useful, */ 10 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ 11 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */ 12 /* the GNU General Public License for more details. */ 13 /* */ 14 /* You should have received a copy of the GNU General Public License */ 15 /* along with this program; if not, write to the Free Software Foundation, */ 16 /* Inc., 59 Temple Place, Suite TEST_SIG0, Boston, MA 02111-1307 USA */ 17 /* */ 18 /* History: Porting from Crackerjack to LTP is done by */ 19 /* Manas Kumar Nayak <maknayak (at) in.ibm.com> */ 20 /******************************************************************************/ 21 22 /******************************************************************************/ 23 /* Description: This tests the rt_sigprocmask() syscall */ 24 /* rt_sigprocmask changes the list of currently blocked signals. */ 25 /* The set value stores the signal mask of the pending signals. */ 26 /* The previous action on the signal is saved in oact. The value */ 27 /* of how indicates how the call should behave; its values are */ 28 /* as follows: */ 29 /* */ 30 /* SIG_BLOCK */ 31 /* The set of blocked signals is the union of the current set*/ 32 /* and the set argument. */ 33 /* SIG_UNBLOCK */ 34 /* The signals in set are removed from the current set of */ 35 /* blocked signals. It is okay to unblock a signal that is */ 36 /* not blocked. */ 37 /* SIG_SETMASK */ 38 /* The set of blocked signals is set to the set argument. */ 39 /* sigsetsize should indicate the size of a sigset_t type. */ 40 /******************************************************************************/ 41 42 #include <stdio.h> 43 #include <signal.h> 44 #include <errno.h> 45 46 #include "test.h" 47 #include "lapi/syscalls.h" 48 #include "lapi/rt_sigaction.h" 49 50 char *TCID = "rt_sigprocmask01"; 51 static int testno; 52 int TST_TOTAL = 8; 53 54 static volatile sig_atomic_t sig_count; 55 56 #define TEST_SIG SIGRTMIN+1 57 58 static void cleanup(void) 59 { 60 tst_rmdir(); 61 } 62 63 static void setup(void) 64 { 65 TEST_PAUSE; 66 tst_tmpdir(); 67 } 68 69 void sig_handler(int sig) 70 { 71 sig_count++; 72 } 73 74 int main(int ac, char **av) 75 { 76 struct sigaction act, oact; 77 memset(&act, 0, sizeof(act)); 78 memset(&oact, 0, sizeof(oact)); 79 act.sa_handler = sig_handler; 80 81 sigset_t set, oset; 82 int lc; 83 84 tst_parse_opts(ac, av, NULL, NULL); 85 86 setup(); 87 88 for (lc = 0; TEST_LOOPING(lc); ++lc) { 89 tst_count = 0; 90 for (testno = 0; testno < TST_TOTAL; ++testno) { 91 92 if (sigemptyset(&set) < 0) 93 tst_brkm(TFAIL | TERRNO, cleanup, 94 "sigemptyset call failed"); 95 96 if (sigaddset(&set, TEST_SIG) < 0) 97 tst_brkm(TFAIL | TERRNO, cleanup, 98 "sigaddset call failed"); 99 100 /* call rt_sigaction() */ 101 TEST(ltp_rt_sigaction(TEST_SIG, &act, &oact, 102 SIGSETSIZE)); 103 if (TEST_RETURN < 0) 104 tst_brkm(TFAIL | TTERRNO, cleanup, 105 "rt_sigaction call failed"); 106 107 /* call rt_sigprocmask() to block signal#TEST_SIG */ 108 TEST(ltp_syscall(__NR_rt_sigprocmask, SIG_BLOCK, &set, 109 &oset, SIGSETSIZE)); 110 if (TEST_RETURN == -1) 111 tst_brkm(TFAIL | TTERRNO, cleanup, 112 "rt_sigprocmask call failed"); 113 114 /* Make sure that the masked process is indeed 115 * masked. */ 116 if (kill(getpid(), TEST_SIG) < 0) 117 tst_brkm(TFAIL | TERRNO, cleanup, 118 "call to kill() failed"); 119 120 if (sig_count) { 121 tst_brkm(TFAIL | TERRNO, cleanup, 122 "rt_sigprocmask() failed to change " 123 "the process's signal mask"); 124 } else { 125 /* call rt_sigpending() */ 126 TEST(ltp_syscall(__NR_rt_sigpending, &oset, 127 SIGSETSIZE)); 128 if (TEST_RETURN == -1) 129 tst_brkm(TFAIL | TTERRNO, cleanup, 130 "rt_sigpending call failed"); 131 132 TEST(sigismember(&oset, TEST_SIG)); 133 if (TEST_RETURN == 0) 134 tst_brkm(TFAIL | TTERRNO, 135 cleanup, 136 "sigismember call failed"); 137 138 /* call rt_sigprocmask() to unblock 139 * signal#TEST_SIG */ 140 TEST(ltp_syscall(__NR_rt_sigprocmask, 141 SIG_UNBLOCK, &set, &oset, 142 SIGSETSIZE)); 143 if (TEST_RETURN == -1) 144 tst_brkm(TFAIL | TTERRNO, 145 cleanup, 146 "rt_sigprocmask call failed"); 147 148 if (sig_count) { 149 tst_resm(TPASS, 150 "rt_sigprocmask " 151 "functionality passed"); 152 break; 153 } else { 154 tst_brkm(TFAIL | TERRNO, 155 cleanup, 156 "rt_sigprocmask " 157 "functionality failed"); 158 } 159 } 160 161 } 162 163 tst_count++; 164 165 } 166 167 cleanup(); 168 tst_exit(); 169 } 170
