diff options
Diffstat (limited to 'misc/tst-select.c')
| -rw-r--r-- | misc/tst-select.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/misc/tst-select.c b/misc/tst-select.c index 534105b..52aa266 100644 --- a/misc/tst-select.c +++ b/misc/tst-select.c @@ -23,6 +23,7 @@ #include <support/timespec.h> #include <support/xunistd.h> #include <support/xtime.h> +#include <support/xsignal.h> struct child_args { @@ -31,6 +32,12 @@ struct child_args }; static void +alarm_handler (int signum) +{ + /* Do nothing. */ +} + +static void do_test_child (void *clousure) { struct child_args *args = (struct child_args *) clousure; @@ -59,6 +66,22 @@ do_test_child (void *clousure) xwrite (args->fds[1][1], "foo", 3); } +static void +do_test_child_alarm (void *clousure) +{ + struct sigaction act = { .sa_handler = alarm_handler }; + xsigaction (SIGALRM, &act, NULL); + alarm (1); + + struct timeval tv = { .tv_sec = 10, .tv_usec = 0 }; + int r = select (0, NULL, NULL, NULL, &tv); + TEST_COMPARE (r, -1); + TEST_COMPARE (errno, EINTR); + + if (support_select_modifies_timeout ()) + TEST_VERIFY (tv.tv_sec < 10); +} + static int do_test (void) { @@ -99,6 +122,13 @@ do_test (void) xclose (args.fds[1][1]); { + struct support_capture_subprocess result; + result = support_capture_subprocess (do_test_child_alarm, NULL); + support_capture_subprocess_check (&result, "tst-select-child", 0, + sc_allow_none); + } + + { fd_set rfds; FD_ZERO (&rfds); FD_SET (args.fds[1][0], &rfds); |