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-rw-r--r--src/test/test-data-fd-util.c148
1 files changed, 148 insertions, 0 deletions
diff --git a/src/test/test-data-fd-util.c b/src/test/test-data-fd-util.c
new file mode 100644
index 0000000..aa68132
--- /dev/null
+++ b/src/test/test-data-fd-util.c
@@ -0,0 +1,148 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "data-fd-util.h"
+#include "fd-util.h"
+#include "memory-util.h"
+#include "process-util.h"
+#include "tests.h"
+#include "random-util.h"
+
+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);
+}
+
+TEST(acquire_data_fd) {
+ 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 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_se(x >= 0);
+
+ y = read(fd2, b, sizeof(b));
+ assert_se(y >= 0);
+
+ assert_se(x == y);
+
+ if (x == 0)
+ break;
+
+ assert_se(memcmp(a, b, x) == 0);
+ }
+}
+
+TEST(copy_data_fd) {
+ _cleanup_close_ int fd1 = -EBADF, fd2 = -EBADF;
+ _cleanup_close_pair_ int sfd[2] = EBADF_PAIR;
+ _cleanup_(sigkill_waitp) pid_t pid = -1;
+ int r;
+
+ fd1 = open("/etc/fstab", O_RDONLY|O_CLOEXEC);
+ if (fd1 >= 0) {
+
+ fd2 = copy_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 = copy_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_SIGTERM|FORK_LOG, &pid);
+ assert_se(r >= 0);
+
+ if (r == 0) {
+ /* child */
+
+ sfd[0] = safe_close(sfd[0]);
+
+ for (uint64_t 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 = copy_data_fd(sfd[0]);
+ assert_se(fd2 >= 0);
+
+ uint64_t j;
+ for (uint64_t 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);
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);