1 files changed, 133 insertions, 0 deletions
diff --git a/lib/mlibc/tests/posix/realpath.c b/lib/mlibc/tests/posix/realpath.c
new file mode 100644
index 0000000..e44de81
--- /dev/null
+++ b/lib/mlibc/tests/posix/realpath.c
@@ -0,0 +1,133 @@
+#include <unistd.h>
+#include <sys/stat.h>
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+
+#ifdef USE_HOST_LIBC
+#define TEST_BASE "/tmp/mlibc-realpath-host-libc"
+#else
+#define TEST_BASE "/tmp/mlibc-realpath"
+#endif
+
+void prepare() {
+	assert(!mkdir(TEST_BASE "/", S_IRWXU));
+	assert(!mkdir(TEST_BASE "/dir1", S_IRWXU));
+	assert(!mkdir(TEST_BASE "/dir2", S_IRWXU));
+	assert(!symlink(TEST_BASE "/dir2/", TEST_BASE "/dir1/abs-link"));
+	assert(!chdir(TEST_BASE "/dir1"));
+	assert(!symlink("../dir2/", TEST_BASE "/dir1/rel-link"));
+}
+
+void cleanup(int do_assert) {
+	if (do_assert) {
+		assert(!unlink(TEST_BASE "/dir1/rel-link"));
+		assert(!unlink(TEST_BASE "/dir1/abs-link"));
+		assert(!rmdir(TEST_BASE "/dir2"));
+		assert(!rmdir(TEST_BASE "/dir1"));
+		assert(!rmdir(TEST_BASE "/"));
+	} else {
+		unlink(TEST_BASE "/dir1/rel-link");
+		unlink(TEST_BASE "/dir1/abs-link");
+		rmdir(TEST_BASE "/dir2");
+		rmdir(TEST_BASE "/dir1");
+		rmdir(TEST_BASE "/");
+	}
+}
+
+void signal_handler(int sig, siginfo_t *info, void *ctx) {
+	(void)sig;
+	(void)info;
+	(void)ctx;
+
+	cleanup(0);
+
+	struct sigaction sa;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_handler = SIG_DFL;
+	sa.sa_flags = 0;
+
+	sigaction(SIGABRT, &sa, NULL);
+	abort();
+}
+
+int main() {
+	char *path;
+
+	struct sigaction sa;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_sigaction = signal_handler;
+	sa.sa_flags = SA_SIGINFO;
+	sigaction(SIGABRT, &sa, NULL);
+
+	prepare();
+
+	path = realpath(TEST_BASE "/dir1/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir1"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/../dir2", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/abs-link/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/rel-link/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/abs-link/../", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE ""));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/rel-link/../", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE ""));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/abs-link/../dir1/abs-link/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/rel-link/../dir1/rel-link/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/abs-link/../dir1/rel-link/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath(TEST_BASE "/dir1/rel-link/../dir1/abs-link/", NULL);
+	assert(path);
+	assert(!strcmp(path, TEST_BASE "/dir2"));
+	free(path);
+
+	path = realpath("/tmp", NULL);
+	assert(path);
+	assert(!strcmp(path, "/tmp"));
+	free(path);
+
+	path = realpath("/", NULL);
+	assert(path);
+	assert(!strcmp(path, "/"));
+	free(path);
+
+	path = realpath("//", NULL);
+	assert(path);
+	assert(!strcmp(path, "/"));
+	free(path);
+
+	cleanup(1);
+}