Differential D21627 Diff 62044 tests/sys/file/closefrom_test.c

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tests/sys/file/closefrom_test.c

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int		int
main(void)		main(void)
{		{
struct shared_info *info;		struct shared_info *info;
pid_t pid;		pid_t pid;
int fd, i, start;		int fd, i, start;

printf("1..15\n");		printf("1..19\n");

/* We better start up with fd's 0, 1, and 2 open. */		/* We better start up with fd's 0, 1, and 2 open. */
start = devnull();		start = devnull();
if (start == -1)		if (start == -1)
fail("open", "bad descriptor %d", start);		fail("open", "bad descriptor %d", start);
ok("open");		ok("open");

/* Make sure highest_fd() works. */		/* Make sure highest_fd() works. */
▲ Show 20 Lines • Show All 107 Lines • ▼ Show 20 Lines	main(void)
ok("closefrom");		ok("closefrom");

/* Do a closefrom() beyond our highest open fd. */		/* Do a closefrom() beyond our highest open fd. */
closefrom(32);		closefrom(32);
fd = highest_fd();		fd = highest_fd();
if (fd != 3)		if (fd != 3)
fail("closefrom", "highest fd %d", fd);		fail("closefrom", "highest fd %d", fd);
ok("closefrom");		ok("closefrom");

		/* Chew up another 8 fd */
		for (i = 0; i < 8; i++)
		(void)devnull();
		fd = highest_fd();
		start = fd - 7;

		/* close_range() a hole in the middle */
		close_range(start + 3, start + 5, 0);
		for (i = start + 3; i < start + 6; ++i) {
		if (close(i) == 0 \|\| errno != EBADF) {
		--i;
		break;
		}
		}
		if (i != start + 6)
		fail("close_range", "failed to close at %d in %d - %d", i + 1,
		start + 3, start + 6);
		ok("close_range");

		/* close_range from the middle of the hole */
		close_range(start + 4, start + 6, 0);
		if ((i = highest_fd()) != fd)
		fail("close_range", "highest fd %d", i);
		ok("close_range");

		/* close_range to the end; effectively closefrom(2) */
		close_range(start + 3, ~0L, 0);
		if ((i = highest_fd()) != start + 2)
		fail("close_range", "highest fd %d", i);
		ok("close_range");

		/* Now close the rest */
		close_range(start, start + 4, 0);
		fd = highest_fd();
		if (fd != 3)
		fail("close_range", "highest fd %d", fd);
		ok("close_range");

return (0);		return (0);
}		}