reorganization: first steps

14 files changed, 0 insertions, 1159 deletions

diff --git a/src/user/app/tests/kernel/fdlimit.c b/src/user/app/tests/kernel/fdlimit.c
deleted file mode 100644
index f332357..0000000
--- a/src/user/app/tests/kernel/fdlimit.c
+++ /dev/null
@@ -1,49 +0,0 @@
-#include "../tests.h"
-#include <camellia/flags.h>
-#include <errno.h>
-#include <unistd.h>
-
-static void test_fdlimit_pipe(void) {
-	hid_t ends[2];
-	hid_t h[2] = {-1, -1};
-	for (;;) {
-		hid_t cur = _sys_open("/", 1, OPEN_READ);
-		if (cur == -EMFILE) break;
-		test(cur >= 0);
-		h[0] = h[1];
-		h[1] = cur;
-	}
-	test(h[0] >= 0); /* we need at least two handles */
-
-	test(_sys_pipe(ends, 0) == -EMFILE);
-	test(_sys_open("/", 1, OPEN_READ) == -EMFILE);
-
-	close(h[1]);
-	test(_sys_pipe(ends, 0) == -EMFILE);
-	test(_sys_open("/", 1, OPEN_READ) == h[1]);
-	test(_sys_open("/", 1, OPEN_READ) == -EMFILE);
-
-	close(h[0]);
-	close(h[1]);
-	test(_sys_pipe(ends, 0) == 0);
-}
-
-static void test_fdlimit_fork(void) {
-	for (;;) {
-		hid_t cur = _sys_open("/", 1, OPEN_READ);
-		if (cur == -EMFILE) break;
-		test(cur >= 0);
-	}
-
-	if (!_sys_fork(0, NULL)) _sys_exit(123);
-
-	test(_sys_fork(FORK_NEWFS, NULL) == -EMFILE);
-	test(_sys_await() == 123);
-	test(_sys_await() == ~0);
-}
-
-void r_k_fdlimit(void) {
-	/* all these tests implicitly test if the vfs returns -EMFILE */
-	run_test(test_fdlimit_pipe);
-	run_test(test_fdlimit_fork);
-}
diff --git a/src/user/app/tests/kernel/fs.c b/src/user/app/tests/kernel/fs.c
deleted file mode 100644
index b5684d7..0000000
--- a/src/user/app/tests/kernel/fs.c
+++ /dev/null
@@ -1,79 +0,0 @@
-#include "../tests.h"
-#include <camellia/flags.h>
-#include <camellia/syscalls.h>
-#include <stdbool.h>
-#include <string.h>
-
-static void test_unfinished_req(void) {
-	hid_t h = -1;
-	int ret = _sys_fork(FORK_NEWFS, &h);
-	test(0 <= ret);
-	if (ret == 0) {
-		// TODO make a similar test with all 0s passed to fs_wait
-		struct ufs_request res;
-		_sys_fs_wait(NULL, 0, &res);
-		// TODO second fs_wait
-		exit(0);
-	} else {
-		test(0 <= h);
-		test(_sys_mount(h, "/", 1) == 0);
-		int ret = _sys_open("/", 1, 0);
-		test(ret < 0);
-		// the handler quits while handling that call - but this syscall should return anyways
-	}
-}
-
-static void test_orphaned_fs(void) {
-	hid_t h = -1;
-	int ret = _sys_fork(FORK_NEWFS, &h);
-	test(0 <= ret);
-	if (ret == 0) {
-		exit(0);
-	} else {
-		test(0 <= h);
-		test(_sys_mount(h, "/", 1) == 0);
-		int ret = _sys_open("/", 1, 0);
-		test(ret < 0);
-	}
-}
-
-static void test_fs_cleanup(void) {
-	const char *msg = "success";
-	int msglen = 8;
-	char buf[16];
-	hid_t ends[2];
-	test(_sys_pipe(ends, 0) >= 0);
-	if (!_sys_fork(0, NULL)) {
-		hid_t h = -1;
-		if (_sys_fork(FORK_NEWFS, &h) == 0) {
-			for (;;) {
-				struct ufs_request req;
-				hid_t reqh = _sys_fs_wait(buf, sizeof buf, &req);
-				if (reqh < 0) break;
-				_sys_fs_respond(reqh, NULL, 0, 0); /* success */
-			}
-			/* this is the test: does it break out of the loop
-			 * when it should cleanup */
-			_sys_write(ends[1], msg, msglen, -1, 0);
-			exit(0);
-		} else {
-			test(_sys_mount(h, "/", 1) == 0);
-			h = _sys_open("/", 1, 0);
-			test(h >= 0);
-			_sys_close(h);
-			// TODO another test without the delay
-			_sys_sleep(0);
-			exit(0);
-		}
-	} else {
-		test(_sys_read(ends[0], buf, sizeof buf, 0) == msglen);
-		test(memcmp(buf, msg, msglen) == 0);
-	}
-}
-
-void r_k_fs(void) {
-	run_test(test_unfinished_req);
-	run_test(test_orphaned_fs);
-	run_test(test_fs_cleanup);
-	run_test(test_fs_cleanup);
-}
diff --git a/src/user/app/tests/kernel/misc.c b/src/user/app/tests/kernel/misc.c
deleted file mode 100644
index 5d6b531..0000000
--- a/src/user/app/tests/kernel/misc.c
+++ /dev/null
@@ -1,66 +0,0 @@
-#include "../tests.h"
-#include <camellia/errno.h>
-#include <camellia/flags.h>
-#include <camellia/syscalls.h>
-#include <string.h>
-#include <unistd.h>
-
-static void test_fault_kill(void) {
-	if (!fork()) { /* invalid memory access */
-		asm volatile("movb $69, 0" ::: "memory");
-		test_fail();
-	}
-	if (!fork()) { /* #GP */
-		asm volatile("hlt" ::: "memory");
-		test_fail();
-	}
-
-	int await_cnt = 0;
-	while (_sys_await() != ~0) await_cnt++;
-	test(await_cnt == 2);
-}
-
-static void test_efault(void) {
-#if 0
-	const char *str = "o, 16 characters";
-	char str2[16];
-	char *invalid = (void*)0x1000;
-	hid_t h;
-
-	memcpy(str2, str, 16);
-
-	test((h = _sys_open(TMPFILEPATH, strlen(TMPFILEPATH), OPEN_CREATE | OPEN_WRITE)) >= 0);
-	test(_sys_write(h, str, 16, 0, 0) == 16);
-	test(_sys_write(h, str2, 16, 0, 0) == 16);
-
-	test(_sys_write(h, invalid, 16, 0, 0) == -EFAULT);
-
-	/* x64 non-canonical pointers */
-	test(_sys_write(h, (void*)((uintptr_t)str ^ 0x8000000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str ^ 0x1000000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str ^ 0x0100000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str ^ 0x0010000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str ^ 0x0001000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str ^ 0x0000800000000000), 16, 0, 0) == -EFAULT);
-
-	test(_sys_write(h, (void*)((uintptr_t)str2 ^ 0x8000000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str2 ^ 0x1000000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str2 ^ 0x0100000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str2 ^ 0x0010000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str2 ^ 0x0001000000000000), 16, 0, 0) == -EFAULT);
-	test(_sys_write(h, (void*)((uintptr_t)str2 ^ 0x0000800000000000), 16, 0, 0) == -EFAULT);
-
-	test(_sys_write(h, str, 16, 0, 0) == 16);
-	close(h);
-#endif
-}
-
-static void test_invalid_syscall(void) {
-	test(_syscall(~0, 0, 0, 0, 0, 0) < 0);
-}
-
-void r_k_misc(void) {
-	run_test(test_fault_kill);
-	run_test(test_efault);
-	run_test(test_invalid_syscall);
-}
diff --git a/src/user/app/tests/kernel/miscsyscall.c b/src/user/app/tests/kernel/miscsyscall.c
deleted file mode 100644
index 459da2a..0000000
--- a/src/user/app/tests/kernel/miscsyscall.c
+++ /dev/null
@@ -1,315 +0,0 @@
-#include "../tests.h"
-#include <camellia/errno.h>
-#include <camellia/execbuf.h>
-#include <camellia/flags.h>
-#include <camellia/syscalls.h>
-#include <string.h>
-#include <unistd.h>
-
-
-static void test_await(void) {
-	/* creates 16 child processes, each returning a different value. then checks
-	 * if await() returns every value exactly once */
-	int ret;
-	int counts[16] = {0};
-
-	for (int i = 0; i < 16; i++)
-		if (!fork())
-			exit(i);
-
-	while ((ret = _sys_await()) != ~0) {
-		test(0 <= ret && ret < 16);
-		counts[ret]++;
-	}
-
-	for (int i = 0; i < 16; i++)
-		test(counts[i] == 1);
-}
-
-static void test_await2(void) {
-	/* hangs on failure */
-	if (!fork()) {
-		if (!fork()) {
-			for (;;) _sys_sleep(1000000000);
-		} else {
-			exit(123);
-		}
-	}
-	test(_sys_await() == 123);
-	test(_sys_await() == ~0); /* don't wait for tombstone */
-	_sys_filicide();
-}
-
-static void test_wait2_basic(void) {
-	struct sys_wait2 data = {0};
-	int pid;
-	pid = fork();
-	if (pid == 0) {
-		exit(420);
-	}
-	test(_sys_wait2(-1, 0, &data) == pid);
-	test(data.status == 420);
-	test(_sys_wait2(-1, 0, NULL) == -ECHILD);
-}
-
-static void test_pipe(void) {
-	const char *pipe_msgs[2] = {"hello", "world"};
-	hid_t ends[2];
-	char buf[16];
-
-	/* test regular reads / writes */
-	test(_sys_pipe(ends, 0) >= 0);
-	if (!fork()) {
-		/* those repeated asserts ensure that you can't read/write to the wrong ends */
-		test(_sys_read(ends[1], buf, 16, 0) < 0);
-		test(_sys_write(ends[0], buf, 16, 0, 0) < 0);
-
-		test(5 == _sys_write(ends[1], pipe_msgs[0], 5, -1, 0));
-
-		test(_sys_read(ends[1], buf, 16, 0) < 0);
-		test(_sys_write(ends[0], buf, 16, 0, 0) < 0);
-
-		test(5 == _sys_write(ends[1], pipe_msgs[1], 5, -1, 0));
-
-		exit(0);
-	} else {
-		test(_sys_read(ends[1], buf, 16, 0) < 0);
-		test(_sys_write(ends[0], buf, 16, 0, 0) < 0);
-
-		test(5 == _sys_read(ends[0], buf, 16, 0));
-		test(!memcmp(buf, pipe_msgs[0], 5));
-
-		test(_sys_read(ends[1], buf, 16, 0) < 0);
-		test(_sys_write(ends[0], buf, 16, 0, 0) < 0);
-
-		test(5 == _sys_read(ends[0], buf, 16, 0));
-		test(!memcmp(buf, pipe_msgs[1], 5));
-
-		_sys_await();
-	}
-	close(ends[0]);
-	close(ends[1]);
-
-
-	/* writing to pipes with one end closed */
-	test(_sys_pipe(ends, 0) >= 0);
-	for (int i = 0; i < 16; i++) {
-		if (!fork()) {
-			close(ends[1]);
-			test(_sys_read(ends[0], buf, 16, 0) < 0);
-			exit(0);
-		}
-	}
-	close(ends[1]);
-	for (int i = 0; i < 16; i++)
-		_sys_await();
-	close(ends[0]);
-
-	test(_sys_pipe(ends, 0) >= 0);
-	for (int i = 0; i < 16; i++) {
-		if (!fork()) {
-			close(ends[0]);
-			test(_sys_write(ends[1], buf, 16, 0, 0) < 0);
-			exit(0);
-		}
-	}
-	close(ends[0]);
-	for (int i = 0; i < 16; i++)
-		_sys_await();
-	close(ends[1]);
-
-
-	/* queueing */
-	test(_sys_pipe(ends, 0) >= 0);
-	for (int i = 0; i < 16; i++) {
-		if (!fork()) {
-			test(_sys_write(ends[1], pipe_msgs[0], 5, -1, 0) == 5);
-			exit(0);
-		}
-	}
-	close(ends[1]);
-	for (int i = 0; i < 16; i++) {
-		test(_sys_read(ends[0], buf, sizeof buf, 0) == 5);
-		_sys_await();
-	}
-	test(_sys_read(ends[0], buf, sizeof buf, 0) < 0);
-	close(ends[0]);
-
-	test(_sys_pipe(ends, 0) >= 0);
-	for (int i = 0; i < 16; i++) {
-		if (!fork()) {
-			memset(buf, 0, sizeof buf);
-			test(_sys_read(ends[0], buf, 5, -1) == 5);
-			test(!memcmp(buf, pipe_msgs[1], 5));
-			exit(0);
-		}
-	}
-	close(ends[0]);
-	for (int i = 0; i < 16; i++) {
-		test(_sys_write(ends[1], pipe_msgs[1], 5, -1, 0) == 5);
-		_sys_await();
-	}
-	test(_sys_write(ends[1], pipe_msgs[1], 5, -1, 0) < 0);
-	close(ends[1]);
-
-
-	// not a to.do detect when all processes that can read are stuck on writing to the pipe and vice versa
-	// it seems like linux just lets the process hang endlessly.
-}
-
-static void test_memflag(void) {
-	void *page = (void*)0x77777000;
-	_sys_memflag(page, 4096, MEMFLAG_PRESENT); // allocate page
-	memset(page, 77, 4096); // write to it
-	_sys_memflag(page, 4096, 0); // free it
-
-	if (!fork()) {
-		memset(page, 11, 4096); // should segfault
-		exit(0);
-	} else {
-		test(_sys_await() != 0); // test if the process crashed
-	}
-
-	char *pages[4];
-	for (size_t i = 0; i < 4; i++) {
-		pages[i] = _sys_memflag(NULL, 4096, MEMFLAG_FINDFREE);
-		test(pages[i] == _sys_memflag(NULL, 4096, MEMFLAG_FINDFREE | MEMFLAG_PRESENT));
-		if (i > 0) test(pages[i] != pages[i-1]);
-		*pages[i] = 0x77;
-	}
-
-	for (size_t i = 0; i < 4; i++)
-		_sys_memflag(pages, 4096, MEMFLAG_PRESENT);
-}
-
-static void test_dup(void) {
-	hid_t pipe[2];
-	hid_t h1, h2;
-	test(_sys_pipe(pipe, 0) >= 0);
-
-	if (!fork()) {
-		close(pipe[0]);
-
-		h1 = _sys_dup(pipe[1], -1, 0);
-		test(h1 >= 0);
-		test(h1 != pipe[1]);
-		h2 = _sys_dup(h1, -1, 0);
-		test(h2 >= 0);
-		test(h2 != pipe[1] && h2 != h1);
-
-		_sys_write(pipe[1], "og", 2, 0, 0);
-		_sys_write(h1, "h1", 2, 0, 0);
-		_sys_write(h2, "h2", 2, 0, 0);
-
-		close(pipe[1]);
-		_sys_write(h1, "h1", 2, 0, 0);
-		_sys_write(h2, "h2", 2, 0, 0);
-
-		test(_sys_dup(h1, pipe[1], 0) == pipe[1]);
-		test(_sys_dup(h2, pipe[1], 0) == pipe[1]);
-		test(_sys_dup(h1, pipe[1], 0) == pipe[1]);
-		test(_sys_dup(h2, pipe[1], 0) == pipe[1]);
-		close(h1);
-		close(h2);
-
-		test(_sys_dup(pipe[1], h2, 0) == h2);
-		_sys_write(h2, "h2", 2, 0, 0);
-		close(h2);
-
-		test(_sys_dup(pipe[1], h1, 0) == h1);
-		_sys_write(h1, "h1", 2, 0, 0);
-		close(h1);
-
-		exit(0);
-	} else {
-		char buf[16];
-		size_t count = 0;
-		close(pipe[1]);
-		while (_sys_read(pipe[0], buf, sizeof buf, 0) >= 0)
-			count++;
-		test(count == 7);
-		_sys_await();
-	}
-
-
-	close(pipe[0]);
-}
-
-static void test_execbuf(void) {
-	if (!fork()) {
-		uint64_t buf[] = {
-			EXECBUF_SYSCALL, _SYS_EXIT, 123, 0, 0, 0, 0,
-		};
-		_sys_execbuf(buf, sizeof buf);
-		test_fail();
-	} else {
-		test(_sys_await() == 123);
-	}
-}
-
-static void test_sleep(void) {
-	hid_t reader;
-	FILE *writer;
-	if (!forkpipe(&writer, &reader)) {
-		if (!fork()) {
-			if (!fork()) {
-				_sys_sleep(100);
-				fprintf(writer, "1");
-				_sys_sleep(200);
-				fprintf(writer, "3");
-				_sys_sleep(200);
-				fprintf(writer, "5");
-				_sys_exit(0);
-			}
-			if (!fork()) {
-				fprintf(writer, "0");
-				_sys_sleep(200);
-				fprintf(writer, "2");
-				_sys_sleep(200);
-				fprintf(writer, "4");
-				/* get killed while asleep
-				* a peaceful death, i suppose. */
-				for (;;) _sys_sleep(1000000000);
-			}
-			_sys_await();
-			_sys_filicide();
-			_sys_exit(0);
-		}
-
-		/* this part checks if, after killing an asleep process,
-		* other processes can still wake up */
-		_sys_sleep(600);
-		fprintf(writer, "6");
-		exit(0);
-	} else {
-		const char *expected = "0123456";
-		size_t target = strlen(expected);
-		size_t pos = 0;
-		for (;;) {
-			char buf[128];
-			long ret = _sys_read(reader, buf, sizeof buf, 0);
-			if (ret < 0) break;
-			test(pos + ret <= target);
-			test(memcmp(buf, expected + pos, ret) == 0);
-			pos += ret;
-		}
-		test(pos == target);
-	}
-}
-
-static void test_badopen(void) {
-	test(_sys_open(TMPFILEPATH, strlen(TMPFILEPATH), OPEN_CREATE | OPEN_WRITE) >= 0);
-	test(_sys_open(TMPFILEPATH, strlen(TMPFILEPATH), OPEN_CREATE) == -EINVAL);
-}
-
-void r_k_miscsyscall(void) {
-	run_test(test_await);
-	run_test(test_await2);
-	run_test(test_wait2_basic);
-	run_test(test_pipe);
-	run_test(test_memflag);
-	run_test(test_dup);
-	run_test(test_execbuf);
-	run_test(test_sleep);
-	run_test(test_badopen);
-}
diff --git a/src/user/app/tests/kernel/path.c b/src/user/app/tests/kernel/path.c
deleted file mode 100644
index 5a22c36..0000000
--- a/src/user/app/tests/kernel/path.c
+++ /dev/null
@@ -1,108 +0,0 @@
-#include "../tests.h"
-#include <camellia/path.h>
-#include <string.h>
-#include <camellia/compat.h>
-#include <camellia/fs/misc.h>
-
-static void test_path_simplify(void) {
-	const char *testcases[][2] = {
-		{"/",         "/"},
-		{"/.",        "/"},
-		{"//",        "/"},
-		{"/asdf",     "/asdf"},
-		{"/asdf/",    "/asdf/"},
-		{"/asdf//",   "/asdf/"},
-		{"/asdf/./",  "/asdf/"},
-		{"/a/./b",    "/a/b"},
-		{"/a/./b/",   "/a/b/"},
-
-		// some slightly less easy cases
-		{"/asdf/..",  "/"},
-		{"/asdf/../", "/"},
-		{"/asdf/.",   "/asdf/"},
-		{"/asdf//.",  "/asdf/"},
-
-		{"/foo/bar/..", "/foo/"},
-		{"/foo/bar/../baz",  "/foo/baz"},
-		{"/foo/bar/../baz/", "/foo/baz/"},
-		{"/foo/bar/xyz/..",  "/foo/bar/"},
-		{"/foo/bar/xyz/../", "/foo/bar/"},
-
-		// going under the root or close to it
-		{"/..",        NULL},
-		{"/../asdf",   NULL},
-		{"/../asdf/",  NULL},
-		{"/./a/../..", NULL},
-		{"/a/a/../..", "/"},
-		{"/a/../a/..", "/"},
-		{"/a/../../a", NULL},
-		{"/../a/../a", NULL},
-		{"/../../a/a", NULL},
-		{"/////../..", NULL},
-		{"//a//../..", NULL},
-
-		// relative paths aren't allowed
-		{"relative",   NULL},
-		{"some/stuff", NULL},
-		{"./stuff",    NULL},
-		{"../stuff",   NULL},
-		{"",           NULL},
-	};
-
-	char buf[256];
-	for (size_t i = 0; i < sizeof(testcases) / sizeof(testcases[0]); i++) {
-		const char *input    = testcases[i][0];
-		const char *expected = testcases[i][1];
-		int len = path_simplify(input, buf, strlen(input));
-		if (expected == NULL) {
-			test(len == 0);
-		} else {
-			// TODO an argument for printing info on test failure
-			test(len == (int)strlen(expected) && !memcmp(expected, buf, len));
-		}
-	}
-}
-
-static void mount_resolve_drv(const char *path) {
-	if (mount_at(path) != 0) return;
-
-	struct ufs_request res;
-	while (!c0_fs_wait(NULL, 0, &res)) {
-		// TODO does the first argument of c0_fs_respond need to be non-const?
-		c0_fs_respond((void*)path, strlen(path), 0);
-	}
-	exit(1);
-}
-
-static void test_mount_resolve(void) {
-	const char *testcases[][2] = {
-		{"/",              "/"},
-		{"/test",          "/"},
-		{"/dir",           "/dir"},
-		{"/dir/..",        "/"},
-		{"/dir/../dir",    "/dir"},
-		{"/dirry",         "/"},
-		{"/dir/",          "/dir"},
-		{"/dir/shadowed",  "/dir"},
-		{"/dir/shadowed/", "/dir"},
-	};
-	mount_resolve_drv("/");
-	mount_resolve_drv("/dir/shadowed");
-	mount_resolve_drv("/dir");
-
-	char buf[16];
-	for (size_t i = 0; i < sizeof(testcases) / sizeof(testcases[0]); i++) {
-		const char *input    = testcases[i][0];
-		const char *expected = testcases[i][1];
-		hid_t h = _sys_open(input, strlen(input), 0);
-		test(h >= 0);
-		int len = _sys_read(h, buf, sizeof buf, 0);
-		test(len == (int)strlen(expected) && !memcmp(expected, buf, len));
-		_sys_close(h);
-	}
-}
-
-void r_k_path(void) {
-	run_test(test_path_simplify);
-	run_test(test_mount_resolve);
-}
diff --git a/src/user/app/tests/kernel/threads.c b/src/user/app/tests/kernel/threads.c
deleted file mode 100644
index b3c1c06..0000000
--- a/src/user/app/tests/kernel/threads.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include "../tests.h"
-#include <camellia/flags.h>
-#include <camellia/syscalls.h>
-#include <string.h>
-#include <esemaphore.h>
-#include <thread.h>
-
-int global_n;
-static void basic_thread(void *sem) {
-	global_n = 10;
-	esem_signal(sem);
-}
-static void test_basic_thread(void) {
-	struct evil_sem *sem = esem_new(0);
-	global_n = 0;
-	thread_create(FORK_NOREAP, basic_thread, sem);
-	esem_wait(sem);
-	test(global_n == 10);
-}
-
-hid_t global_h;
-static void shared_handle(void *sem) {
-	hid_t ends[2];
-	test(_sys_pipe(ends, 0) >= 0);
-	global_h = ends[0];
-	esem_signal(sem);
-	_sys_write(ends[1], "Hello!", 7, -1, 0);
-}
-static void test_shared_handle(void) {
-	struct evil_sem *sem = esem_new(0);
-	char buf[16];
-	global_h = -1;
-	thread_create(FORK_NOREAP, shared_handle, sem);
-	esem_wait(sem);
-
-	test(global_h >= 0);
-	test(_sys_read(global_h, buf, sizeof buf, 0) == 7);
-	test(!strcmp("Hello!", buf));
-}
-
-static void many_thread(void *arg) {
-	*(uint64_t*)arg += 10;
-}
-static void test_many_threads(void) {
-	uint64_t n = 0;
-	for (int i = 0; i < 10; i++) thread_create(0, many_thread, &n);
-	for (int i = 0; i < 10; i++) _sys_await();
-	test(n == 100);
-}
-
-void r_k_threads(void) {
-	run_test(test_basic_thread);
-	run_test(test_shared_handle);
-	run_test(test_many_threads);
-}
diff --git a/src/user/app/tests/libc/esemaphore.c b/src/user/app/tests/libc/esemaphore.c
deleted file mode 100644
index f089f4f..0000000
--- a/src/user/app/tests/libc/esemaphore.c
+++ /dev/null
@@ -1,95 +0,0 @@
-#include "../tests.h"
-#include <camellia/flags.h>
-#include <camellia/syscalls.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <esemaphore.h>
-
-static void odd(hid_t out, struct evil_sem *sem1, struct evil_sem *sem2) {
-	_sys_write(out, "1", 1, -1, 0);
-	esem_signal(sem1);
-
-	esem_wait(sem2);
-	_sys_write(out, "3", 1, -1, 0);
-	esem_signal(sem1);
-
-	esem_wait(sem2);
-	_sys_write(out, "5", 1, -1, 0);
-	esem_signal(sem1);
-}
-
-static void even(hid_t out, struct evil_sem *sem1, struct evil_sem *sem2) {
-	esem_wait(sem1);
-	_sys_write(out, "2", 1, -1, 0);
-	esem_signal(sem2);
-
-	esem_wait(sem1);
-	_sys_write(out, "4", 1, -1, 0);
-	esem_signal(sem2);
-
-	esem_wait(sem1);
-	_sys_write(out, "6", 1, -1, 0);
-	esem_signal(sem2);
-}
-
-static void test_semaphore(void) {
-	struct evil_sem *sem1, *sem2;
-	hid_t pipe[2];
-	test(_sys_pipe(pipe, 0) >= 0);
-
-	if (!fork()) {
-		sem1 = esem_new(0);
-		sem2 = esem_new(0);
-		test(sem1 && sem2);
-		if (!fork()) {
-			odd(pipe[1], sem1, sem2);
-			exit(69);
-		} else {
-			even(pipe[1], sem1, sem2);
-			test(_sys_await() == 69);
-		}
-		esem_free(sem1);
-		esem_free(sem2);
-
-		_sys_write(pipe[1], "|", 1, -1, 0);
-
-		sem1 = esem_new(0);
-		sem2 = esem_new(0);
-		test(sem1 && sem2);
-		if (!fork()) {
-			even(pipe[1], sem1, sem2);
-			exit(69);
-		} else {
-			odd(pipe[1], sem1, sem2);
-			test(_sys_await() == 69);
-			_sys_await();
-		}
-		esem_free(sem1);
-		esem_free(sem2);
-
-		_sys_filicide();
-		exit(0);
-	} else {
-		close(pipe[1]);
-
-		char buf[16];
-		size_t pos = 0;
-		for (;;) {
-			int ret = _sys_read(pipe[0], buf + pos, sizeof(buf) - pos, 0);
-			if (ret < 0) break;
-			pos += ret;
-		}
-		buf[pos] = '\0'; // idc about the "potential" overflow
-		if (strcmp(buf, "123456|123456")) {
-			printf("%s\n", buf);
-			test_fail();
-		}
-
-		_sys_await();
-	}
-}
-
-void r_libc_esemaphore(void) {
-	run_test(test_semaphore);
-}
diff --git a/src/user/app/tests/libc/setjmp.c b/src/user/app/tests/libc/setjmp.c
deleted file mode 100644
index 0dded9d..0000000
--- a/src/user/app/tests/libc/setjmp.c
+++ /dev/null
@@ -1,31 +0,0 @@
-#include "../tests.h"
-#include <stdbool.h>
-#include <setjmp.h>
-
-static void test_setjmp(void) {
-	jmp_buf env;
-	volatile bool inner;
-	int val;
-	inner = false;
-	if (!(val = setjmp(env))) {
-		inner = true;
-		longjmp(env, 1234);
-		test(0);
-	} else {
-		test(val == 1234);
-		test(inner);
-	}
-	inner = false;
-	if (!(val = setjmp(env))) {
-		inner = true;
-		longjmp(env, 0);
-		test(0);
-	} else {
-		test(val == 1);
-		test(inner);
-	}
-}
-
-void r_libc_setjmp(void) {
-	run_test(test_setjmp);
-}
diff --git a/src/user/app/tests/libc/string.c b/src/user/app/tests/libc/string.c
deleted file mode 100644
index 6afe350..0000000
--- a/src/user/app/tests/libc/string.c
+++ /dev/null
@@ -1,124 +0,0 @@
-#include "../tests.h"
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-
-static void test_memcmp(void) {
-	test(0 == memcmp("some", "thing", 0));
-	test(0 != memcmp("some", "thing", 1));
-	test(0 != memcmp("some", "thing", 4));
-
-	test(0 == memcmp("test", "tennis",  0));
-	test(0 == memcmp("test", "tennis",  1));
-	test(0 == memcmp("test", "tennis",  2));
-	test(0 != memcmp("test", "tennis",  3));
-	test(0 != memcmp("test", "tennis",  4));
-	test(0 != memcmp("test", "tennis",  5));
-
-	test(0 > memcmp("foo", "moo", 4));
-	test(0 < memcmp("moo", "foo", 4));
-	test(0 > memcmp("555", "654", 3));
-	test(0 < memcmp("654", "555", 3));
-}
-
-static bool memall(const unsigned char *s, unsigned char c, size_t n) {
-	for (size_t i = 0; i < n; i++)
-		if (s[i] != c) return false;
-	return true;
-}
-
-static void test_memset(void) {
-	const size_t buflen = 4096;
-	void *buf = malloc(buflen);
-	test(buf);
-	for (int i = 0; i < 257; i++) {
-		memset(buf, i, buflen);
-		test(memall(buf, i & 0xff, buflen));
-	}
-	free(buf);
-}
-
-static void test_memmove(void) {
-	const int partsize = 64;
-	char buf[partsize * 3];
-	for (int i = 0; i < partsize * 2; i++) {
-		memset(buf, 0, sizeof buf);
-		for (int j = 0; j < partsize; j++) buf[i + j] = j;
-		memmove(buf + partsize, buf + i, partsize);
-		for (int j = 0; j < partsize; j++) test(buf[partsize + j] == j);
-	}
-}
-
-static void test_strcmp(void) {
-	test(0 == strcmp("string", "string"));
-	test(0 > strcmp("str", "string"));
-	test(0 < strcmp("string", "str"));
-
-	test(0 != strcmp("stress", "string"));
-
-	test(0 != strncmp("abc", "ab", 3));
-	test(0 == strncmp("abc", "ab", 2));
-}
-
-static void test_strtol(void) {
-	char *end;
-	test(1234 == strtol("1234", NULL, 10));
-	test(1234 == strtol("+1234", NULL, 10));
-	test(-1234 == strtol("-1234", NULL, 10));
-
-	test(1234 == strtol("1234", &end, 10));
-	test(!strcmp("", end));
-	test(1234 == strtol("   1234hello", &end, 10));
-	test(!strcmp("hello", end));
-
-	test(1234 == strtol("   1234hello", &end, 0));
-	test(!strcmp("hello", end));
-	test(0xCAF3 == strtol("   0xCaF3hello", &end, 0));
-	test(!strcmp("hello", end));
-	test(01234 == strtol("   01234hello", &end, 0));
-	test(!strcmp("hello", end));
-}
-
-static void test_strspn(void) {
-	test(0 == strspn("", "1234"));
-	test(0 == strspn("asdf", "1234"));
-	test(0 == strspn("a2df", "1234"));
-	test(2 == strspn("42df", "1234"));
-	test(4 == strspn("4211", "1234"));
-
-	test(0 == strcspn("", "1234"));
-	test(4 == strcspn("asdf", "1234"));
-	test(1 == strcspn("a2df", "1234"));
-}
-
-static void test_strtok(void) {
-	const char *sep = " \t";
-	{
-		char line[] = "LINE TO BE SEPARATED";
-		test(!strcmp(strtok(line, sep), "LINE"));
-		test(!strcmp(strtok(NULL, sep), "TO"));
-		test(!strcmp(strtok(NULL, sep), "BE"));
-		test(!strcmp(strtok(NULL, sep), "SEPARATED"));
-		for (int i = 0; i < 4; i++)
-			test(strtok(NULL, sep) == NULL);
-	}
-	{
-		char line[] = "  LINE TO\tBE  \t SEPARATED   ";
-		test(!strcmp(strtok(line, sep), "LINE"));
-		test(!strcmp(strtok(NULL, sep), "TO"));
-		test(!strcmp(strtok(NULL, sep), "BE"));
-		test(!strcmp(strtok(NULL, sep), "SEPARATED"));
-		for (int i = 0; i < 4; i++)
-			test(strtok(NULL, sep) == NULL);
-	}
-}
-
-void r_libc_string(void) {
-	run_test(test_memcmp);
-	run_test(test_memset);
-	run_test(test_memmove);
-	run_test(test_strcmp);
-	run_test(test_strtol);
-	run_test(test_strspn);
-	run_test(test_strtok);
-}
diff --git a/src/user/app/tests/shared/printf.c b/src/user/app/tests/shared/printf.c
deleted file mode 100644
index d8df48a..0000000
--- a/src/user/app/tests/shared/printf.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include "../tests.h"
-#include <stdio.h>
-#include <string.h>
-
-#pragma GCC diagnostic ignored "-Wformat-truncation"
-
-static void test_printf(void) {
-	char buf[64];
-	memset(buf, '?', 64);
-
-	/* test proper overflow handling in snprintf */
-	test(13 == snprintf(buf, 15, "That's 0x%x", 0x1337));
-	test(!memcmp(buf, "That's 0x1337\0??", 16));
-	test(17 == snprintf(buf, 15, "%05x %05x %05x", 0, 0, 0));
-	test(!memcmp(buf, "00000 00000 00\0?", 16));
-
-	/* all the other stuff */
-	snprintf(buf, sizeof buf, "%010x", 0x1BABE);
-	test(!strcmp(buf, "000001babe"));
-	snprintf(buf, sizeof buf, "%10x", 0x1BABE);
-	test(!strcmp(buf, "     1babe"));
-	snprintf(buf, sizeof buf, "%10s", "hello");
-	test(!strcmp(buf, "     hello"));
-
-	snprintf(buf, sizeof buf, "%s%%%s", "ab", "cd");
-	test(!strcmp(buf, "ab%cd"));
-
-	snprintf(buf, sizeof buf, "%05u,%05u", 1234, 56789);
-	test(!strcmp(buf, "01234,56789"));
-
-	snprintf(buf, sizeof buf, "%5d,%5d", 123, 4567);
-	test(!strcmp(buf, "  123, 4567"));
-	snprintf(buf, sizeof buf, "%5d,%5d", -123, -4567);
-	test(!strcmp(buf, " -123,-4567"));
-
-	snprintf(buf, sizeof buf, "%u,%d,%x", 0, 0, 0);
-	test(!strcmp(buf, "0,0,0"));
-
-	/* precision */
-	snprintf(buf, sizeof buf, "%5.2u,%5.2d,%5.2x", 0, 0, 0);
-	test(!strcmp(buf, "   00,   00,   00"));
-	snprintf(buf, sizeof buf, "%5.2u,%5.2d,%5.2x", 10, -10, 0x10);
-	test(!strcmp(buf, "   10,  -10,   10"));
-	snprintf(buf, sizeof buf, "%5.3d", -1);
-	test(!strcmp(buf, " -001"));
-	snprintf(buf, sizeof buf, "%.5d", 123);
-	test(!strcmp(buf, "00123"));
-
-	snprintf(buf, sizeof buf, "%.1s,%.10s,%.*s", "hello", "hello", 3, "hello");
-	test(!strcmp(buf, "h,hello,hel"));
-}
-
-void r_s_printf(void) {
-	run_test(test_printf);
-}
diff --git a/src/user/app/tests/shared/ringbuf.c b/src/user/app/tests/shared/ringbuf.c
deleted file mode 100644
index d2a35a1..0000000
--- a/src/user/app/tests/shared/ringbuf.c
+++ /dev/null
@@ -1,49 +0,0 @@
-#include "../tests.h"
-#include <shared/ring.h>
-#include <string.h>
-
-static void test_ringbuf(void) {
-	char backbuf[16], cmpbuf[16];
-	size_t num_read = 0, num_written = 0;
-	uint8_t c;
-
-	ring_t r = {backbuf, 16, 0, 0};
-
-	/* aliasing */
-	for (size_t i = 0; i < 16; i++) {
-		test(ring_used(&r) == 0);
-		test(ring_avail(&r) == 16);
-		ring_put(&r, "11 bytes...", 11);
-		test(ring_used(&r) == 11);
-		test(ring_avail(&r) == 5);
-
-		memset(cmpbuf, 0, sizeof cmpbuf);
-		test(ring_get(&r, cmpbuf, 16) == 11);
-		test(memcmp(cmpbuf, "11 bytes...", 11) == 0);
-	}
-
-	test(ring_used(&r) == 0);
-	for (size_t i = 0; i < 7; i++)
-		ring_put1b(&r, num_written++);
-	test(ring_used(&r) == 7);
-	for (size_t i = 0; i < 3; i++) {
-		ring_get(&r, &c, 1);
-		test(num_read++ == c);
-	}
-	test(ring_used(&r) == 4);
-
-	for (size_t j = 0; j < 40; j++) {
-		for (size_t i = 0; i < 7; i++)
-			ring_put1b(&r, num_written++ & 0xff);
-		test(ring_used(&r) == 11);
-		for (size_t i = 0; i < 7; i++) {
-			ring_get(&r, &c, 1);
-			test((num_read++ & 0xff) == c);
-		}
-		test(ring_used(&r) == 4);
-	}
-}
-
-void r_s_ringbuf(void) {
-	run_test(test_ringbuf);
-}
diff --git a/src/user/app/tests/stress.c b/src/user/app/tests/stress.c
deleted file mode 100644
index 1ef018c..0000000
--- a/src/user/app/tests/stress.c
+++ /dev/null
@@ -1,28 +0,0 @@
-#include "tests.h"
-#include <camellia/flags.h>
-#include <camellia/syscalls.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-static void run_forked(void (*fn)()) {
-	if (!fork()) {
-		fn();
-		exit(0);
-	} else {
-		/* successful tests must return 0
-		 * TODO add a better fail msg */
-		if (_sys_await() != 0) test_fail();
-	}
-}
-
-
-static void stress_fork(void) {
-	for (size_t i = 0; i < 2048; i++) {
-		if (!fork()) exit(0);
-		_sys_await();
-	}
-}
-
-void stress_all(void) {
-	run_forked(stress_fork);
-}
diff --git a/src/user/app/tests/tests.c b/src/user/app/tests/tests.c
deleted file mode 100644
index 5cba682..0000000
--- a/src/user/app/tests/tests.c
+++ /dev/null
@@ -1,68 +0,0 @@
-#include "tests.h"
-#include <camellia/syscalls.h>
-#include <unistd.h>
-
-__attribute__((visibility("hidden")))
-extern char __executable_start[];
-
-FILE *fail_trig;
-
-void run_test(void (*fn)()) {
-	if (!fork()) {
-		fn();
-		_sys_filicide();
-		exit(0);
-	} else {
-		/* successful tests must return 0 */
-		if (_sys_await() != 0) {
-			test_failf("%p, base %p", (void*)((void*)fn - (void*)__executable_start), __executable_start);
-		}
-	}
-}
-
-int forkpipe(FILE **f, hid_t *h) {
-	hid_t ends[2];
-	if (_sys_pipe(ends, 0) < 0) {
-		fprintf(stderr, "couldn't create pipe\n");
-		exit(1);
-	}
-	int ret = fork();
-	if (!ret) {
-		close(ends[0]);
-		*f = fdopen(ends[1], "w");
-		*h = -1;
-	} else {
-		close(ends[1]);
-		*f = NULL;
-		*h = ends[0];
-	}
-	return ret;
-}
-
-int main(void) {
-	hid_t reader;
-	if (!forkpipe(&fail_trig, &reader)) {
-		r_k_miscsyscall();
-		r_k_fs();
-		r_k_fdlimit();
-		r_k_misc();
-		r_k_path();
-		r_k_threads();
-		r_libc_esemaphore();
-		r_libc_setjmp();
-		r_libc_string();
-		r_s_printf();
-		r_s_ringbuf();
-		exit(0);
-	} else {
-		for (;;) {
-			char buf[128];
-			long ret = _sys_read(reader, buf, sizeof buf, 0);
-			if (ret < 0) break;
-			printf("\033[31mFAIL\033[0m ");
-			fwrite(buf, ret, 1, stdout);
-			printf("\n");
-		}
-	}
-	return 0;
-}
diff --git a/src/user/app/tests/tests.h b/src/user/app/tests/tests.h
deleted file mode 100644
index 5037e1a..0000000
--- a/src/user/app/tests/tests.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#pragma once
-#include <camellia/syscalls.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#define TMPFILEPATH "/tmp/.test_internal"
-
-void run_test(void (*fn)());
-
-void r_k_fdlimit(void);
-void r_k_fs(void);
-void r_k_misc(void);
-void r_k_miscsyscall(void);
-void r_k_path(void);
-void r_k_threads(void);
-void r_libc_esemaphore(void);
-void r_libc_setjmp(void);
-void r_libc_string(void);
-void r_s_printf(void);
-void r_s_ringbuf(void);
-
-extern FILE *fail_trig;
-
-int forkpipe(FILE **f, hid_t *h);
-
-#define argify(str) str, sizeof(str) - 1
-#define test_fail() do { \
-	fprintf(fail_trig, "%s():%u", __func__, __LINE__); \
-	fflush(fail_trig); \
-	exit(0); \
-} while (0)
-#define test_failf(fmt, ...) do { \
-	fprintf(fail_trig, "%s():%u " fmt, __func__, __LINE__, __VA_ARGS__); \
-	fflush(fail_trig); \
-	exit(0); \
-} while (0)
-#define test(cond) if (!(cond)) test_fail();