src/test/test-signal-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <unistd.h>
   4
   5 #include "log.h"
   6 #include "macro.h"
   7 #include "signal-util.h"
   8 #include "stdio-util.h"
   9 #include "string-util.h"
  10 #include "process-util.h"
  11
  12 #define info(sig) log_info(#sig " = " STRINGIFY(sig) " = %d", sig)
  13
  14 static void test_rt_signals(void) {
  15         info(SIGRTMIN);
  16         info(SIGRTMAX);
  17
  18         /* We use signals SIGRTMIN+0 to SIGRTMIN+24 unconditionally */
  19         assert(SIGRTMAX - SIGRTMIN >= 24);
  20 }
  21
  22 static void test_signal_to_string_one(int val) {
  23         const char *p;
  24
  25         assert_se(p = signal_to_string(val));
  26
  27         assert_se(signal_from_string(p) == val);
  28
  29         p = strjoina("SIG", p);
  30         assert_se(signal_from_string(p) == val);
  31 }
  32
  33 static void test_signal_from_string_one(const char *s, int val) {
  34         const char *p;
  35
  36         assert_se(signal_from_string(s) == val);
  37
  38         p = strjoina("SIG", s);
  39         assert_se(signal_from_string(p) == val);
  40 }
  41
  42 static void test_signal_from_string_number(const char *s, int val) {
  43         const char *p;
  44
  45         assert_se(signal_from_string(s) == val);
  46
  47         p = strjoina("SIG", s);
  48         assert_se(signal_from_string(p) == -EINVAL);
  49 }
  50
  51 static void test_signal_from_string(void) {
  52         char buf[STRLEN("RTMIN+") + DECIMAL_STR_MAX(int) + 1];
  53
  54         test_signal_to_string_one(SIGHUP);
  55         test_signal_to_string_one(SIGTERM);
  56         test_signal_to_string_one(SIGRTMIN);
  57         test_signal_to_string_one(SIGRTMIN+3);
  58         test_signal_to_string_one(SIGRTMAX-4);
  59
  60         test_signal_from_string_one("RTMIN", SIGRTMIN);
  61         test_signal_from_string_one("RTMAX", SIGRTMAX);
  62
  63         xsprintf(buf, "RTMIN+%d", SIGRTMAX-SIGRTMIN);
  64         test_signal_from_string_one(buf, SIGRTMAX);
  65
  66         xsprintf(buf, "RTMIN+%d", INT_MAX);
  67         test_signal_from_string_one(buf, -ERANGE);
  68
  69         xsprintf(buf, "RTMAX-%d", SIGRTMAX-SIGRTMIN);
  70         test_signal_from_string_one(buf, SIGRTMIN);
  71
  72         xsprintf(buf, "RTMAX-%d", INT_MAX);
  73         test_signal_from_string_one(buf, -ERANGE);
  74
  75         test_signal_from_string_one("", -EINVAL);
  76         test_signal_from_string_one("hup", -EINVAL);
  77         test_signal_from_string_one("HOGEHOGE", -EINVAL);
  78
  79         test_signal_from_string_one("RTMIN-5", -EINVAL);
  80         test_signal_from_string_one("RTMIN-    5", -EINVAL);
  81         test_signal_from_string_one("RTMIN    -5", -EINVAL);
  82         test_signal_from_string_one("RTMIN+    5", -EINVAL);
  83         test_signal_from_string_one("RTMIN    +5", -EINVAL);
  84         test_signal_from_string_one("RTMIN+100", -ERANGE);
  85         test_signal_from_string_one("RTMIN+-3", -EINVAL);
  86         test_signal_from_string_one("RTMIN++3", -EINVAL);
  87         test_signal_from_string_one("RTMIN+HUP", -EINVAL);
  88         test_signal_from_string_one("RTMIN3", -EINVAL);
  89
  90         test_signal_from_string_one("RTMAX+5", -EINVAL);
  91         test_signal_from_string_one("RTMAX+    5", -EINVAL);
  92         test_signal_from_string_one("RTMAX    +5", -EINVAL);
  93         test_signal_from_string_one("RTMAX-    5", -EINVAL);
  94         test_signal_from_string_one("RTMAX    -5", -EINVAL);
  95         test_signal_from_string_one("RTMAX-100", -ERANGE);
  96         test_signal_from_string_one("RTMAX-+3", -EINVAL);
  97         test_signal_from_string_one("RTMAX--3", -EINVAL);
  98         test_signal_from_string_one("RTMAX-HUP", -EINVAL);
  99
 100         test_signal_from_string_number("3", 3);
 101         test_signal_from_string_number("+5", 5);
 102         test_signal_from_string_number("  +5", 5);
 103         test_signal_from_string_number("10000", -ERANGE);
 104         test_signal_from_string_number("-2", -ERANGE);
 105 }
 106
 107 static void test_block_signals(void) {
 108         sigset_t ss;
 109
 110         assert_se(sigprocmask(0, NULL, &ss) >= 0);
 111
 112         assert_se(sigismember(&ss, SIGUSR1) == 0);
 113         assert_se(sigismember(&ss, SIGALRM) == 0);
 114         assert_se(sigismember(&ss, SIGVTALRM) == 0);
 115
 116         {
 117                 BLOCK_SIGNALS(SIGUSR1, SIGVTALRM);
 118
 119                 assert_se(sigprocmask(0, NULL, &ss) >= 0);
 120                 assert_se(sigismember(&ss, SIGUSR1) == 1);
 121                 assert_se(sigismember(&ss, SIGALRM) == 0);
 122                 assert_se(sigismember(&ss, SIGVTALRM) == 1);
 123
 124         }
 125
 126         assert_se(sigprocmask(0, NULL, &ss) >= 0);
 127         assert_se(sigismember(&ss, SIGUSR1) == 0);
 128         assert_se(sigismember(&ss, SIGALRM) == 0);
 129         assert_se(sigismember(&ss, SIGVTALRM) == 0);
 130 }
 131
 132 static void test_ignore_signals(void) {
 133         assert_se(ignore_signals(SIGINT, -1) >= 0);
 134         assert_se(kill(getpid_cached(), SIGINT) >= 0);
 135         assert_se(ignore_signals(SIGUSR1, SIGUSR2, SIGTERM, SIGPIPE, -1) >= 0);
 136         assert_se(kill(getpid_cached(), SIGUSR1) >= 0);
 137         assert_se(kill(getpid_cached(), SIGUSR2) >= 0);
 138         assert_se(kill(getpid_cached(), SIGTERM) >= 0);
 139         assert_se(kill(getpid_cached(), SIGPIPE) >= 0);
 140         assert_se(default_signals(SIGINT, SIGUSR1, SIGUSR2, SIGTERM, SIGPIPE, -1) >= 0);
 141 }
 142
 143 int main(int argc, char *argv[]) {
 144         test_rt_signals();
 145         test_signal_from_string();
 146         test_block_signals();
 147         test_ignore_signals();
 148
 149         return 0;
 150 }