user: implement mlibc as the libc, finally.

It's finally done.. Signed-off-by: kaguya <vpshinomiya@protonmail.com>
2026-05-02 03:31:49 -04:00
parent 2fa39ad85a
commit 9a9b91c940
2387 changed files with 152741 additions and 315 deletions
@@ -0,0 +1,100 @@
+#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(!symlink(TEST_BASE "/dir2///", TEST_BASE "/dir1/abs-link-trail"));
+	assert(!symlink(TEST_BASE "/dir2", TEST_BASE "/dir1/abs-link-no-trail"));
+	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(!unlink(TEST_BASE "/dir1/abs-link-trail"));
+		assert(!unlink(TEST_BASE "/dir1/abs-link-no-trail"));
+		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");
+		unlink(TEST_BASE "/dir1/abs-link-trail");
+		unlink(TEST_BASE "/dir1/abs-link-no-trail");
+		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();
+}
+
+#define TEST_PATH(rpath, expected) \
+	path = realpath(rpath, NULL); \
+	assert(path); \
+	assert(!strcmp(path, expected)); \
+	free(path);
+
+
+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();
+
+	TEST_PATH(TEST_BASE "/dir1/",                           TEST_BASE "/dir1");
+	TEST_PATH(TEST_BASE "/dir1/../dir2",                    TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/abs-link/",                  TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/rel-link/",                  TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/abs-link/../",               TEST_BASE "");
+	TEST_PATH(TEST_BASE "/dir1/rel-link/../",               TEST_BASE "");
+	TEST_PATH(TEST_BASE "/dir1/abs-link/../dir1/abs-link/", TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/rel-link/../dir1/rel-link/", TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/abs-link/../dir1/rel-link/", TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/rel-link/../dir1/abs-link/", TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/abs-link-no-trail/",         TEST_BASE "/dir2");
+	TEST_PATH(TEST_BASE "/dir1/abs-link-trail/",            TEST_BASE "/dir2");
+
+	TEST_PATH("/tmp", "/tmp");
+	TEST_PATH("/",    "/");
+	TEST_PATH("//",   "/");
+
+	cleanup(1);
+
+	return 0;
+}