[thirdparty/systemd.git] / src / test / test-fd-util.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <fcntl.h>
#include <unistd.h>

#include "alloc-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "macro.h"
#include "memory-util.h"
#include "path-util.h"
#include "process-util.h"
#include "random-util.h"
#include "serialize.h"
#include "string-util.h"
#include "tests.h"
#include "tmpfile-util.h"

static void test_close_many(void) {
        int fds[3];
        char name0[] = "/tmp/test-close-many.XXXXXX";
        char name1[] = "/tmp/test-close-many.XXXXXX";
        char name2[] = "/tmp/test-close-many.XXXXXX";

        fds[0] = mkostemp_safe(name0);
        fds[1] = mkostemp_safe(name1);
        fds[2] = mkostemp_safe(name2);

        close_many(fds, 2);

        assert_se(fcntl(fds[0], F_GETFD) == -1);
        assert_se(fcntl(fds[1], F_GETFD) == -1);
        assert_se(fcntl(fds[2], F_GETFD) >= 0);

        safe_close(fds[2]);

        unlink(name0);
        unlink(name1);
        unlink(name2);
}

static void test_close_nointr(void) {
        char name[] = "/tmp/test-test-close_nointr.XXXXXX";
        int fd;

        fd = mkostemp_safe(name);
        assert_se(fd >= 0);
        assert_se(close_nointr(fd) >= 0);
        assert_se(close_nointr(fd) < 0);

        unlink(name);
}

static void test_same_fd(void) {
        _cleanup_close_pair_ int p[2] = { -1, -1 };
        _cleanup_close_ int a = -1, b = -1, c = -1;

        assert_se(pipe2(p, O_CLOEXEC) >= 0);
        assert_se((a = fcntl(p[0], F_DUPFD, 3)) >= 0);
        assert_se((b = open("/dev/null", O_RDONLY|O_CLOEXEC)) >= 0);
        assert_se((c = fcntl(a, F_DUPFD, 3)) >= 0);

        assert_se(same_fd(p[0], p[0]) > 0);
        assert_se(same_fd(p[1], p[1]) > 0);
        assert_se(same_fd(a, a) > 0);
        assert_se(same_fd(b, b) > 0);

        assert_se(same_fd(a, p[0]) > 0);
        assert_se(same_fd(p[0], a) > 0);
        assert_se(same_fd(c, p[0]) > 0);
        assert_se(same_fd(p[0], c) > 0);
        assert_se(same_fd(a, c) > 0);
        assert_se(same_fd(c, a) > 0);

        assert_se(same_fd(p[0], p[1]) == 0);
        assert_se(same_fd(p[1], p[0]) == 0);
        assert_se(same_fd(p[0], b) == 0);
        assert_se(same_fd(b, p[0]) == 0);
        assert_se(same_fd(p[1], a) == 0);
        assert_se(same_fd(a, p[1]) == 0);
        assert_se(same_fd(p[1], b) == 0);
        assert_se(same_fd(b, p[1]) == 0);

        assert_se(same_fd(a, b) == 0);
        assert_se(same_fd(b, a) == 0);
}

static void test_open_serialization_fd(void) {
        _cleanup_close_ int fd = -1;

        fd = open_serialization_fd("test");
        assert_se(fd >= 0);

        assert_se(write(fd, "test\n", 5) == 5);
}

static void test_acquire_data_fd_one(unsigned flags) {
        char wbuffer[196*1024 - 7];
        char rbuffer[sizeof(wbuffer)];
        int fd;

        fd = acquire_data_fd("foo", 3, flags);
        assert_se(fd >= 0);

        zero(rbuffer);
        assert_se(read(fd, rbuffer, sizeof(rbuffer)) == 3);
        assert_se(streq(rbuffer, "foo"));

        fd = safe_close(fd);

        fd = acquire_data_fd("", 0, flags);
        assert_se(fd >= 0);

        zero(rbuffer);
        assert_se(read(fd, rbuffer, sizeof(rbuffer)) == 0);
        assert_se(streq(rbuffer, ""));

        fd = safe_close(fd);

        random_bytes(wbuffer, sizeof(wbuffer));

        fd = acquire_data_fd(wbuffer, sizeof(wbuffer), flags);
        assert_se(fd >= 0);

        zero(rbuffer);
        assert_se(read(fd, rbuffer, sizeof(rbuffer)) == sizeof(rbuffer));
        assert_se(memcmp(rbuffer, wbuffer, sizeof(rbuffer)) == 0);

        fd = safe_close(fd);
}

static void test_acquire_data_fd(void) {

        test_acquire_data_fd_one(0);
        test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL);
        test_acquire_data_fd_one(ACQUIRE_NO_MEMFD);
        test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL|ACQUIRE_NO_MEMFD);
        test_acquire_data_fd_one(ACQUIRE_NO_PIPE);
        test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL|ACQUIRE_NO_PIPE);
        test_acquire_data_fd_one(ACQUIRE_NO_MEMFD|ACQUIRE_NO_PIPE);
        test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL|ACQUIRE_NO_MEMFD|ACQUIRE_NO_PIPE);
        test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL|ACQUIRE_NO_MEMFD|ACQUIRE_NO_PIPE|ACQUIRE_NO_TMPFILE);
}

static void test_fd_move_above_stdio(void) {
        int original_stdin, new_fd;

        original_stdin = fcntl(0, F_DUPFD, 3);
        assert_se(original_stdin >= 3);
        assert_se(close_nointr(0) != EBADF);

        new_fd = open("/dev/null", O_RDONLY);
        assert_se(new_fd == 0);

        new_fd = fd_move_above_stdio(new_fd);
        assert_se(new_fd >= 3);

        assert_se(dup(original_stdin) == 0);
        assert_se(close_nointr(original_stdin) != EBADF);
        assert_se(close_nointr(new_fd) != EBADF);
}

static void test_rearrange_stdio(void) {
        pid_t pid;
        int r;

        r = safe_fork("rearrange", FORK_WAIT|FORK_LOG, &pid);
        assert_se(r >= 0);

        if (r == 0) {
                _cleanup_free_ char *path = NULL;
                char buffer[10];

                /* Child */

                safe_close(STDERR_FILENO); /* Let's close an fd < 2, to make it more interesting */

                assert_se(rearrange_stdio(-1, -1, -1) >= 0);

                assert_se(fd_get_path(STDIN_FILENO, &path) >= 0);
                assert_se(path_equal(path, "/dev/null"));
                path = mfree(path);

                assert_se(fd_get_path(STDOUT_FILENO, &path) >= 0);
                assert_se(path_equal(path, "/dev/null"));
                path = mfree(path);

                assert_se(fd_get_path(STDOUT_FILENO, &path) >= 0);
                assert_se(path_equal(path, "/dev/null"));
                path = mfree(path);

                safe_close(STDIN_FILENO);
                safe_close(STDOUT_FILENO);
                safe_close(STDERR_FILENO);

                {
                        int pair[2];
                        assert_se(pipe(pair) >= 0);
                        assert_se(pair[0] == 0);
                        assert_se(pair[1] == 1);
                        assert_se(fd_move_above_stdio(0) == 3);
                }
                assert_se(open("/dev/full", O_WRONLY|O_CLOEXEC) == 0);
                assert_se(acquire_data_fd("foobar", 6, 0) == 2);

                assert_se(rearrange_stdio(2, 0, 1) >= 0);

                assert_se(write(1, "x", 1) < 0 && errno == ENOSPC);
                assert_se(write(2, "z", 1) == 1);
                assert_se(read(3, buffer, sizeof(buffer)) == 1);
                assert_se(buffer[0] == 'z');
                assert_se(read(0, buffer, sizeof(buffer)) == 6);
                assert_se(memcmp(buffer, "foobar", 6) == 0);

                assert_se(rearrange_stdio(-1, 1, 2) >= 0);
                assert_se(write(1, "a", 1) < 0 && errno == ENOSPC);
                assert_se(write(2, "y", 1) == 1);
                assert_se(read(3, buffer, sizeof(buffer)) == 1);
                assert_se(buffer[0] == 'y');

                assert_se(fd_get_path(0, &path) >= 0);
                assert_se(path_equal(path, "/dev/null"));
                path = mfree(path);

                _exit(EXIT_SUCCESS);
        }
}

static void assert_equal_fd(int fd1, int fd2) {

        for (;;) {
                uint8_t a[4096], b[4096];
                ssize_t x, y;

                x = read(fd1, a, sizeof(a));
                assert(x >= 0);

                y = read(fd2, b, sizeof(b));
                assert(y >= 0);

                assert(x == y);

                if (x == 0)
                        break;

                assert(memcmp(a, b, x) == 0);
        }
}

static void test_fd_duplicate_data_fd(void) {
        _cleanup_close_ int fd1 = -1, fd2 = -1;
        _cleanup_(close_pairp) int sfd[2] = { -1, -1 };
        _cleanup_(sigkill_waitp) pid_t pid = -1;
        uint64_t i, j;
        int r;

        fd1 = open("/etc/fstab", O_RDONLY|O_CLOEXEC);
        if (fd1 >= 0) {

                fd2 = fd_duplicate_data_fd(fd1);
                assert_se(fd2 >= 0);

                assert_se(lseek(fd1, 0, SEEK_SET) == 0);
                assert_equal_fd(fd1, fd2);
        }

        fd1 = safe_close(fd1);
        fd2 = safe_close(fd2);

        fd1 = acquire_data_fd("hallo", 6,  0);
        assert_se(fd1 >= 0);

        fd2 = fd_duplicate_data_fd(fd1);
        assert_se(fd2 >= 0);

        safe_close(fd1);
        fd1 = acquire_data_fd("hallo", 6,  0);
        assert_se(fd1 >= 0);

        assert_equal_fd(fd1, fd2);

        fd1 = safe_close(fd1);
        fd2 = safe_close(fd2);

        assert_se(socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, sfd) >= 0);

        r = safe_fork("(sd-pipe)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_LOG, &pid);
        assert_se(r >= 0);

        if (r == 0) {
                /* child */

                sfd[0] = safe_close(sfd[0]);

                for (i = 0; i < 1536*1024 / sizeof(uint64_t); i++)
                        assert_se(write(sfd[1], &i, sizeof(i)) == sizeof(i));

                sfd[1] = safe_close(sfd[1]);

                _exit(EXIT_SUCCESS);
        }

        sfd[1] = safe_close(sfd[1]);

        fd2 = fd_duplicate_data_fd(sfd[0]);
        assert_se(fd2 >= 0);

        for (i = 0; i < 1536*1024 / sizeof(uint64_t); i++) {
                assert_se(read(fd2, &j, sizeof(j)) == sizeof(j));
                assert_se(i == j);
        }

        assert_se(read(fd2, &j, sizeof(j)) == 0);
}

static void test_read_nr_open(void) {
        log_info("nr-open: %i", read_nr_open());
}

int main(int argc, char *argv[]) {

        test_setup_logging(LOG_DEBUG);

        test_close_many();
        test_close_nointr();
        test_same_fd();
        test_open_serialization_fd();
        test_acquire_data_fd();
        test_fd_move_above_stdio();
        test_rearrange_stdio();
        test_fd_duplicate_data_fd();
        test_read_nr_open();

        return 0;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
0999c8ad RC	2
	3	#include <fcntl.h>
	4	#include <unistd.h>
	5
	6	#include "alloc-util.h"
	7	#include "fd-util.h"
	8	#include "fileio.h"
	9	#include "macro.h"
0a970718	10	#include "memory-util.h"
aa11e28b LP	11	#include "path-util.h"
aa11e28b LP	12	#include "process-util.h"
a548e14d	13	#include "random-util.h"
0a2152f0	14	#include "serialize.h"
a548e14d	15	#include "string-util.h"
6d7c4033	16	#include "tests.h"
e4de7287	17	#include "tmpfile-util.h"
0999c8ad RC	18
	19	static void test_close_many(void) {
	20	int fds[3];
	21	char name0[] = "/tmp/test-close-many.XXXXXX";
	22	char name1[] = "/tmp/test-close-many.XXXXXX";
	23	char name2[] = "/tmp/test-close-many.XXXXXX";
	24
646853bd TM	25	fds[0] = mkostemp_safe(name0);
	26	fds[1] = mkostemp_safe(name1);
	27	fds[2] = mkostemp_safe(name2);
0999c8ad RC	28
	29	close_many(fds, 2);
	30
	31	assert_se(fcntl(fds[0], F_GETFD) == -1);
	32	assert_se(fcntl(fds[1], F_GETFD) == -1);
	33	assert_se(fcntl(fds[2], F_GETFD) >= 0);
	34
	35	safe_close(fds[2]);
	36
	37	unlink(name0);
	38	unlink(name1);
	39	unlink(name2);
	40	}
	41
	42	static void test_close_nointr(void) {
	43	char name[] = "/tmp/test-test-close_nointr.XXXXXX";
	44	int fd;
	45
646853bd	46	fd = mkostemp_safe(name);
0999c8ad RC	47	assert_se(fd >= 0);
	48	assert_se(close_nointr(fd) >= 0);
	49	assert_se(close_nointr(fd) < 0);
	50
	51	unlink(name);
	52	}
	53
	54	static void test_same_fd(void) {
	55	_cleanup_close_pair_ int p[2] = { -1, -1 };
	56	_cleanup_close_ int a = -1, b = -1, c = -1;
	57
	58	assert_se(pipe2(p, O_CLOEXEC) >= 0);
43dc7aa2	59	assert_se((a = fcntl(p[0], F_DUPFD, 3)) >= 0);
0999c8ad	60	assert_se((b = open("/dev/null", O_RDONLY\|O_CLOEXEC)) >= 0);
43dc7aa2	61	assert_se((c = fcntl(a, F_DUPFD, 3)) >= 0);
0999c8ad RC	62
	63	assert_se(same_fd(p[0], p[0]) > 0);
	64	assert_se(same_fd(p[1], p[1]) > 0);
	65	assert_se(same_fd(a, a) > 0);
	66	assert_se(same_fd(b, b) > 0);
	67
	68	assert_se(same_fd(a, p[0]) > 0);
	69	assert_se(same_fd(p[0], a) > 0);
	70	assert_se(same_fd(c, p[0]) > 0);
	71	assert_se(same_fd(p[0], c) > 0);
	72	assert_se(same_fd(a, c) > 0);
	73	assert_se(same_fd(c, a) > 0);
	74
	75	assert_se(same_fd(p[0], p[1]) == 0);
	76	assert_se(same_fd(p[1], p[0]) == 0);
	77	assert_se(same_fd(p[0], b) == 0);
	78	assert_se(same_fd(b, p[0]) == 0);
	79	assert_se(same_fd(p[1], a) == 0);
	80	assert_se(same_fd(a, p[1]) == 0);
	81	assert_se(same_fd(p[1], b) == 0);
	82	assert_se(same_fd(b, p[1]) == 0);
	83
	84	assert_se(same_fd(a, b) == 0);
	85	assert_se(same_fd(b, a) == 0);
	86	}
	87
504afd7c ZJS	88	static void test_open_serialization_fd(void) {
	89	_cleanup_close_ int fd = -1;
	90
	91	fd = open_serialization_fd("test");
	92	assert_se(fd >= 0);
	93
ca9b2b4d	94	assert_se(write(fd, "test\n", 5) == 5);
504afd7c ZJS	95	}
504afd7c ZJS	96
a548e14d LP	97	static void test_acquire_data_fd_one(unsigned flags) {
	98	char wbuffer[196*1024 - 7];
	99	char rbuffer[sizeof(wbuffer)];
	100	int fd;
	101
	102	fd = acquire_data_fd("foo", 3, flags);
	103	assert_se(fd >= 0);
	104
	105	zero(rbuffer);
	106	assert_se(read(fd, rbuffer, sizeof(rbuffer)) == 3);
	107	assert_se(streq(rbuffer, "foo"));
	108
	109	fd = safe_close(fd);
	110
	111	fd = acquire_data_fd("", 0, flags);
	112	assert_se(fd >= 0);
	113
	114	zero(rbuffer);
	115	assert_se(read(fd, rbuffer, sizeof(rbuffer)) == 0);
	116	assert_se(streq(rbuffer, ""));
	117
	118	fd = safe_close(fd);
	119
	120	random_bytes(wbuffer, sizeof(wbuffer));
	121
	122	fd = acquire_data_fd(wbuffer, sizeof(wbuffer), flags);
	123	assert_se(fd >= 0);
	124
	125	zero(rbuffer);
	126	assert_se(read(fd, rbuffer, sizeof(rbuffer)) == sizeof(rbuffer));
	127	assert_se(memcmp(rbuffer, wbuffer, sizeof(rbuffer)) == 0);
	128
	129	fd = safe_close(fd);
	130	}
	131
	132	static void test_acquire_data_fd(void) {
	133
	134	test_acquire_data_fd_one(0);
	135	test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL);
	136	test_acquire_data_fd_one(ACQUIRE_NO_MEMFD);
	137	test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL\|ACQUIRE_NO_MEMFD);
	138	test_acquire_data_fd_one(ACQUIRE_NO_PIPE);
	139	test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL\|ACQUIRE_NO_PIPE);
	140	test_acquire_data_fd_one(ACQUIRE_NO_MEMFD\|ACQUIRE_NO_PIPE);
	141	test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL\|ACQUIRE_NO_MEMFD\|ACQUIRE_NO_PIPE);
	142	test_acquire_data_fd_one(ACQUIRE_NO_DEV_NULL\|ACQUIRE_NO_MEMFD\|ACQUIRE_NO_PIPE\|ACQUIRE_NO_TMPFILE);
	143	}
	144
7fe2903c LP	145	static void test_fd_move_above_stdio(void) {
	146	int original_stdin, new_fd;
	147
	148	original_stdin = fcntl(0, F_DUPFD, 3);
	149	assert_se(original_stdin >= 3);
	150	assert_se(close_nointr(0) != EBADF);
	151
	152	new_fd = open("/dev/null", O_RDONLY);
	153	assert_se(new_fd == 0);
	154
	155	new_fd = fd_move_above_stdio(new_fd);
	156	assert_se(new_fd >= 3);
	157
	158	assert_se(dup(original_stdin) == 0);
	159	assert_se(close_nointr(original_stdin) != EBADF);
	160	assert_se(close_nointr(new_fd) != EBADF);
	161	}
	162
aa11e28b LP	163	static void test_rearrange_stdio(void) {
	164	pid_t pid;
	165	int r;
	166
	167	r = safe_fork("rearrange", FORK_WAIT\|FORK_LOG, &pid);
	168	assert_se(r >= 0);
	169
	170	if (r == 0) {
	171	_cleanup_free_ char *path = NULL;
	172	char buffer[10];
	173
	174	/* Child */
	175
	176	safe_close(STDERR_FILENO); /* Let's close an fd < 2, to make it more interesting */
	177
	178	assert_se(rearrange_stdio(-1, -1, -1) >= 0);
	179
	180	assert_se(fd_get_path(STDIN_FILENO, &path) >= 0);
	181	assert_se(path_equal(path, "/dev/null"));
	182	path = mfree(path);
	183
	184	assert_se(fd_get_path(STDOUT_FILENO, &path) >= 0);
	185	assert_se(path_equal(path, "/dev/null"));
	186	path = mfree(path);
	187
	188	assert_se(fd_get_path(STDOUT_FILENO, &path) >= 0);
	189	assert_se(path_equal(path, "/dev/null"));
	190	path = mfree(path);
	191
	192	safe_close(STDIN_FILENO);
	193	safe_close(STDOUT_FILENO);
	194	safe_close(STDERR_FILENO);
	195
	196	{
	197	int pair[2];
	198	assert_se(pipe(pair) >= 0);
	199	assert_se(pair[0] == 0);
	200	assert_se(pair[1] == 1);
	201	assert_se(fd_move_above_stdio(0) == 3);
	202	}
	203	assert_se(open("/dev/full", O_WRONLY\|O_CLOEXEC) == 0);
	204	assert_se(acquire_data_fd("foobar", 6, 0) == 2);
	205
	206	assert_se(rearrange_stdio(2, 0, 1) >= 0);
	207
	208	assert_se(write(1, "x", 1) < 0 && errno == ENOSPC);
	209	assert_se(write(2, "z", 1) == 1);
	210	assert_se(read(3, buffer, sizeof(buffer)) == 1);
	211	assert_se(buffer[0] == 'z');
	212	assert_se(read(0, buffer, sizeof(buffer)) == 6);
	213	assert_se(memcmp(buffer, "foobar", 6) == 0);
	214
	215	assert_se(rearrange_stdio(-1, 1, 2) >= 0);
	216	assert_se(write(1, "a", 1) < 0 && errno == ENOSPC);
	217	assert_se(write(2, "y", 1) == 1);
	218	assert_se(read(3, buffer, sizeof(buffer)) == 1);
	219	assert_se(buffer[0] == 'y');
	220
	221	assert_se(fd_get_path(0, &path) >= 0);
	222	assert_se(path_equal(path, "/dev/null"));
	223	path = mfree(path);
	224
	225	_exit(EXIT_SUCCESS);
	226	}
227	}
228
4960ce43 LP	229	static void assert_equal_fd(int fd1, int fd2) {
	230
	231	for (;;) {
	232	uint8_t a[4096], b[4096];
	233	ssize_t x, y;
	234
	235	x = read(fd1, a, sizeof(a));
	236	assert(x >= 0);
	237
	238	y = read(fd2, b, sizeof(b));
	239	assert(y >= 0);
	240
	241	assert(x == y);
	242
	243	if (x == 0)
	244	break;
	245
	246	assert(memcmp(a, b, x) == 0);
	247	}
	248	}
	249
	250	static void test_fd_duplicate_data_fd(void) {
	251	_cleanup_close_ int fd1 = -1, fd2 = -1;
	252	_cleanup_(close_pairp) int sfd[2] = { -1, -1 };
	253	_cleanup_(sigkill_waitp) pid_t pid = -1;
	254	uint64_t i, j;
	255	int r;
	256
	257	fd1 = open("/etc/fstab", O_RDONLY\|O_CLOEXEC);
	258	if (fd1 >= 0) {
	259
	260	fd2 = fd_duplicate_data_fd(fd1);
	261	assert_se(fd2 >= 0);
	262
	263	assert_se(lseek(fd1, 0, SEEK_SET) == 0);
	264	assert_equal_fd(fd1, fd2);
	265	}
	266
	267	fd1 = safe_close(fd1);
	268	fd2 = safe_close(fd2);
	269
	270	fd1 = acquire_data_fd("hallo", 6, 0);
	271	assert_se(fd1 >= 0);
	272
	273	fd2 = fd_duplicate_data_fd(fd1);
	274	assert_se(fd2 >= 0);
	275
	276	safe_close(fd1);
	277	fd1 = acquire_data_fd("hallo", 6, 0);
	278	assert_se(fd1 >= 0);
	279
	280	assert_equal_fd(fd1, fd2);
	281
	282	fd1 = safe_close(fd1);
	283	fd2 = safe_close(fd2);
	284
	285	assert_se(socketpair(AF_UNIX, SOCK_STREAM\|SOCK_CLOEXEC, 0, sfd) >= 0);
	286
	287	r = safe_fork("(sd-pipe)", FORK_RESET_SIGNALS\|FORK_DEATHSIG\|FORK_LOG, &pid);
	288	assert_se(r >= 0);
	289
	290	if (r == 0) {
	291	/* child */
	292
293	sfd[0] = safe_close(sfd[0]);
294
295	for (i = 0; i < 1536*1024 / sizeof(uint64_t); i++)
296	assert_se(write(sfd[1], &i, sizeof(i)) == sizeof(i));
297
298	sfd[1] = safe_close(sfd[1]);
299
300	_exit(EXIT_SUCCESS);
301	}
302
303	sfd[1] = safe_close(sfd[1]);
304
305	fd2 = fd_duplicate_data_fd(sfd[0]);
306	assert_se(fd2 >= 0);
307
308	for (i = 0; i < 1536*1024 / sizeof(uint64_t); i++) {
309	assert_se(read(fd2, &j, sizeof(j)) == sizeof(j));
310	assert_se(i == j);
311	}
312
313	assert_se(read(fd2, &j, sizeof(j)) == 0);
314	}
315
9264cc39 LP	316	static void test_read_nr_open(void) {
	317	log_info("nr-open: %i", read_nr_open());
	318	}
	319
0999c8ad	320	int main(int argc, char *argv[]) {
9264cc39	321
6d7c4033	322	test_setup_logging(LOG_DEBUG);
9264cc39	323
0999c8ad RC	324	test_close_many();
	325	test_close_nointr();
	326	test_same_fd();
504afd7c	327	test_open_serialization_fd();
a548e14d	328	test_acquire_data_fd();
7fe2903c	329	test_fd_move_above_stdio();
aa11e28b	330	test_rearrange_stdio();
4960ce43	331	test_fd_duplicate_data_fd();
9264cc39	332	test_read_nr_open();
0999c8ad RC	333
	334	return 0;
	335	}