mirror of
https://github.com/jart/cosmopolitan.git
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Eliminate some flakes
- Get ASAN working on Windows. - Deleting directories and then recreating them with the same name in a short period of time appears to be a no-no on Windows. - There's no reason to call FlushFileBuffers on close() for pipes, and it's harmful since it might block indefinitely for no good reason.
This commit is contained in:
Justine Tunney
parent
27c899af56
commit
4e56d89dcd
60 changed files with 588 additions and 751 deletions
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@ -20,17 +20,19 @@
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#include "libc/bits/bits.h"
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#include "libc/bits/weaken.h"
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#include "libc/calls/calls.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/linux/exit.h"
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#include "libc/linux/write.h"
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#include "libc/log/log.h"
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#include "libc/macros.h"
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#include "libc/mem/hook/hook.h"
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#include "libc/nt/enum/version.h"
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#include "libc/nt/runtime.h"
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#include "libc/runtime/directmap.h"
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#include "libc/runtime/memtrack.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/auxv.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/prot.h"
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#include "third_party/dlmalloc/dlmalloc.internal.h"
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@ -409,29 +411,40 @@ static const char *__asan_describe_access_poison(char *p) {
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}
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}
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static textsyscall wontreturn void __asan_exit(int rc) {
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if (!IsWindows()) {
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asm volatile("syscall"
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: /* no outputs */
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: "a"(__NR_exit_group), "D"(rc)
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: "memory");
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unreachable;
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} else {
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ExitProcess(rc);
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}
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}
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static textsyscall ssize_t __asan_write(const void *data, size_t size) {
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ssize_t rc;
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if (weaken(write)) {
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if ((rc = weaken(write)(2, data, size)) != -1) {
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return rc;
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uint32_t wrote;
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if (!IsWindows()) {
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asm volatile("syscall"
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: "=a"(rc)
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: "0"(__NR_write), "D"(2), "S"(data), "d"(size)
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: "rcx", "r11", "memory");
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return rc;
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} else {
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if (WriteFile(GetStdHandle(kNtStdErrorHandle), data, size, &wrote, 0)) {
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return wrote;
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} else {
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return -1;
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}
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}
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return LinuxWrite(2, data, size);
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}
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static ssize_t __asan_write_string(const char *s) {
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return __asan_write(s, __asan_strlen(s));
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}
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static textsyscall wontreturn void __asan_exit(int rc) {
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if (weaken(_Exit)) {
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weaken(_Exit)(rc);
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} else {
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LinuxExit(rc);
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}
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for (;;) asm("hlt");
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}
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static wontreturn void __asan_abort(void) {
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if (weaken(__die)) weaken(__die)();
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if (weaken(abort)) weaken(abort)();
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@ -640,7 +653,9 @@ void __asan_stack_free(char *p, size_t size, int classid) {
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__asan_deallocate(p, kAsanStackFree);
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}
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void __asan_handle_no_return_impl(uintptr_t rsp) {
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void __asan_handle_no_return(void) {
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uintptr_t rsp;
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rsp = (uintptr_t)__builtin_frame_address(0);
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__asan_unpoison(rsp, ROUNDUP(rsp, STACKSIZE) - rsp);
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}
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@ -660,11 +675,11 @@ void __asan_unregister_globals(struct AsanGlobal g[], int n) {
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}
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}
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void __asan_report_load_impl(uint8_t *addr, int size) {
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void __asan_report_load(uint8_t *addr, int size) {
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__asan_report_memory_fault(addr, size, "load");
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}
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void __asan_report_store_impl(uint8_t *addr, int size) {
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void __asan_report_store(uint8_t *addr, int size) {
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__asan_report_memory_fault(addr, size, "store");
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}
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@ -790,6 +805,10 @@ textstartup void __asan_init(int argc, char **argv, char **envp,
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intptr_t *auxv) {
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static bool once;
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if (!cmpxchg(&once, false, true)) return;
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if (IsWindows() && NtGetVersion() < kNtVersionWindows10) {
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__asan_write_string("error: asan binaries require windows10\n");
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__asan_exit(0); /* So `make MODE=dbg test` passes w/ Windows7 */
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}
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REQUIRE(_mmi);
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REQUIRE(__mmap);
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REQUIRE(MAP_ANONYMOUS);
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@ -25,7 +25,9 @@ LIBC_INTRIN_A_CHECKS = \
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LIBC_INTRIN_A_DIRECTDEPS = \
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LIBC_STUBS \
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LIBC_NEXGEN32E
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LIBC_SYSV \
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LIBC_NEXGEN32E \
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LIBC_NT_KERNEL32
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LIBC_INTRIN_A_DEPS := \
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$(call uniq,$(foreach x,$(LIBC_INTRIN_A_DIRECTDEPS),$($(x))))
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24
libc/intrin/ntgetversion.c
Normal file
24
libc/intrin/ntgetversion.c
Normal file
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@ -0,0 +1,24 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nt/struct/teb.h"
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#include "libc/runtime/runtime.h"
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textwindows noasan int NtGetVersion(void) {
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return (NtGetPeb()->OSMajorVersion & 0xff) << 8 | NtGetPeb()->OSMinorVersion;
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}
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@ -25,6 +25,18 @@
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/ since ASAN has the same stylistic hugeness as UBSAN.
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/ We also guard all the functions, against reentrancy.
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.rodata.cst4
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__asan_option_detect_stack_use_after_return:
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.long 0
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.endobj __asan_option_detect_stack_use_after_return,globl
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.previous
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.bss
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__asan_noreentry:
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.byte 0
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.endobj __asan_noreentry
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.previous
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__asan_report_load1:
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push $1
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jmp OnReportLoad
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@ -43,14 +55,18 @@ __asan_report_load8:
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.endfn __asan_report_load8,globl
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__asan_report_load16:
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push $16
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/ 𝑠𝑙𝑖𝑑𝑒
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jmp OnReportLoad
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.endfn __asan_report_load16,globl
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__asan_report_load32:
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push $32
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/ 𝑠𝑙𝑖𝑑𝑒
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.endfn __asan_report_load32,globl
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OnReportLoad:
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pop %rsi
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/ 𝑠𝑙𝑖𝑑𝑒
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.endfn OnReportLoad
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__asan_report_load_n:
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lea __asan_report_load_impl(%rip),%r11
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lea __asan_report_load(%rip),%r11
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jmp __asan_report_noreentry
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.endfn __asan_report_load_n,globl
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@ -83,7 +99,7 @@ ReportStore:
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/ 𝑠𝑙𝑖𝑑𝑒
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.endfn ReportStore
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__asan_report_store_n:
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lea __asan_report_store_impl(%rip),%r11
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lea __asan_report_store(%rip),%r11
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/ 𝑠𝑙𝑖𝑑𝑒
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.endfn __asan_report_store_n,globl
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@ -198,31 +214,6 @@ OnStackMalloc:
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jmp __asan_stack_malloc
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.endfn OnStackMalloc
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__asan_handle_no_return:
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push %rbp
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mov %rsp,%rbp
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lea 8(%rsp),%rdi
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call __asan_handle_no_return_impl
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pop %rbp
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ret
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.endfn __asan_handle_no_return,globl
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__asan_before_dynamic_init:
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push %rbp
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mov %rsp,%rbp
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ud2
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pop %rbp
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ret
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.endfn __asan_before_dynamic_init,globl
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__asan_after_dynamic_init:
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push %rbp
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mov %rsp,%rbp
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ud2
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pop %rbp
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ret
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.endfn __asan_after_dynamic_init,globl
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__asan_version_mismatch_check_v8:
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ret
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.endfn __asan_version_mismatch_check_v8,globl
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@ -240,14 +231,76 @@ __asan_version_mismatch_check_v8:
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pop %rdi
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.init.end 301,_init_asan
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.rodata.cst4
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__asan_option_detect_stack_use_after_return:
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.long 0
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.endobj __asan_option_detect_stack_use_after_return,globl
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.previous
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__asan_before_dynamic_init:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_before_dynamic_init,globl
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.bss
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__asan_noreentry:
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.byte 0
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.endobj __asan_noreentry
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.previous
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__asan_after_dynamic_init:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_after_dynamic_init,globl
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__asan_load1:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_load1,globl
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__asan_load2:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_load2,globl
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__asan_load4:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_load4,globl
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__asan_load8:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_load8,globl
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__asan_load16:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_load16,globl
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__asan_load32:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_load32,globl
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__asan_store1:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_store1,globl
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__asan_store2:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_store2,globl
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__asan_store4:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_store4,globl
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__asan_store8:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_store8,globl
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__asan_store16:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_store16,globl
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__asan_store32:
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push %rbp
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mov %rsp,%rbp
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ud2
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.endfn __asan_store32,globl
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