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Improve ZIP filesystem and change its prefix

Browse source 
The ZIP filesystem has a breaking change. You now need to use /zip/ to
open() / opendir() / etc. assets within the ZIP structure of your APE
binary, instead of the previous convention of using zip: or zip! URIs.
This is needed because Python likes to use absolute paths, and having
ZIP paths encoded like URIs simply broke too many things.

Many more system calls have been updated to be able to operate on ZIP
files and file descriptors. In particular fcntl() and ioctl() since
Python would do things like ask if a ZIP file is a terminal and get
confused when the old implementation mistakenly said yes, because the
fastest way to guarantee native file descriptors is to dup(2). This
change also improves the async signal safety of zipos and ensures it
doesn't maintain any open file descriptors beyond that which the user
has opened.

This change makes a lot of progress towards adding magic numbers that
are specific to platforms other than Linux. The philosophy here is that,
if you use an operating system like FreeBSD, then you should be able to
take advantage of FreeBSD exclusive features, even if we don't polyfill
them on other platforms. For example, you can now open() a file with the
O_VERIFY flag. If your program runs on other platforms, then Cosmo will
automatically set O_VERIFY to zero. This lets you safely use it without
the need for #ifdef or ifstatements which detract from readability.

One of the blindspots of the ASAN memory hardening we use to offer Rust
like assurances has always been that memory passed to the kernel via
system calls (e.g. writev) can't be checked automatically since the
kernel wasn't built with MODE=asan. This change makes more progress
ensuring that each system call will verify the soundness of memory
before it's passed to the kernel. The code for doing these checks is
fast, particularly for buffers, where it can verify 64 bytes a cycle.

- Correct O_LOOP definition on NT
- Introduce program_executable_name
- Add ASAN guards to more system calls
- Improve termios compatibility with BSDs
- Fix bug in Windows auxiliary value encoding
- Add BSD and XNU specific errnos and open flags
- Add check to ensure build doesn't talk to internet
This commit is contained in:
Justine Tunney 2021-08-22 01:04:18 -07:00
parent 2730c66f4a
commit 00611e9b06
319 changed files with 4418 additions and 2599 deletions
Download patch file Download diff file Expand all files Collapse all files

220
third_party/python/Modules/signalmodule.c vendored
View file

@ -27,6 +27,7 @@
#include "third_party/python/Include/pymacro.h"
#include "third_party/python/Include/tupleobject.h"
#include "third_party/python/Modules/posixmodule.h"
#include "third_party/python/pyconfig.h"
/* clang-format off */
/* Signal module -- many thanks to Lance Ellinghaus */
@ -1230,18 +1231,9 @@ PyInit__signal(void)
goto finally;
Py_DECREF(x);
#ifdef SIG_BLOCK
if (PyModule_AddIntMacro(m, SIG_BLOCK))
goto finally;
#endif
#ifdef SIG_UNBLOCK
if (PyModule_AddIntMacro(m, SIG_UNBLOCK))
goto finally;
#endif
#ifdef SIG_SETMASK
if (PyModule_AddIntMacro(m, SIG_SETMASK))
goto finally;
#endif
if (PyModule_AddIntMacro(m, SIG_BLOCK)) goto finally;
if (PyModule_AddIntMacro(m, SIG_UNBLOCK)) goto finally;
if (PyModule_AddIntMacro(m, SIG_SETMASK)) goto finally;
x = IntHandler = PyDict_GetItemString(d, "default_int_handler");
if (!x)
@ -1268,173 +1260,47 @@ PyInit__signal(void)
PyOS_setsig(SIGINT, signal_handler);
}
#ifdef SIGHUP
if (PyModule_AddIntMacro(m, SIGHUP))
goto finally;
#endif
#ifdef SIGINT
if (PyModule_AddIntMacro(m, SIGINT))
goto finally;
#endif
#ifdef SIGBREAK
if (PyModule_AddIntMacro(m, SIGBREAK))
goto finally;
#endif
#ifdef SIGQUIT
if (PyModule_AddIntMacro(m, SIGQUIT))
goto finally;
#endif
#ifdef SIGILL
if (PyModule_AddIntMacro(m, SIGILL))
goto finally;
#endif
#ifdef SIGTRAP
if (PyModule_AddIntMacro(m, SIGTRAP))
goto finally;
#endif
#ifdef SIGIOT
if (PyModule_AddIntMacro(m, SIGIOT))
goto finally;
#endif
#ifdef SIGABRT
if (PyModule_AddIntMacro(m, SIGABRT))
goto finally;
#endif
#ifdef SIGEMT
if (PyModule_AddIntMacro(m, SIGEMT))
goto finally;
#endif
#ifdef SIGFPE
if (PyModule_AddIntMacro(m, SIGFPE))
goto finally;
#endif
#ifdef SIGKILL
if (PyModule_AddIntMacro(m, SIGKILL))
goto finally;
#endif
#ifdef SIGBUS
if (PyModule_AddIntMacro(m, SIGBUS))
goto finally;
#endif
#ifdef SIGSEGV
if (PyModule_AddIntMacro(m, SIGSEGV))
goto finally;
#endif
#ifdef SIGSYS
if (PyModule_AddIntMacro(m, SIGSYS))
goto finally;
#endif
#ifdef SIGPIPE
if (PyModule_AddIntMacro(m, SIGPIPE))
goto finally;
#endif
#ifdef SIGALRM
if (PyModule_AddIntMacro(m, SIGALRM))
goto finally;
#endif
#ifdef SIGTERM
if (PyModule_AddIntMacro(m, SIGTERM))
goto finally;
#endif
#ifdef SIGUSR1
if (PyModule_AddIntMacro(m, SIGUSR1))
goto finally;
#endif
#ifdef SIGUSR2
if (PyModule_AddIntMacro(m, SIGUSR2))
goto finally;
#endif
#ifdef SIGCLD
if (PyModule_AddIntMacro(m, SIGCLD))
goto finally;
#endif
#ifdef SIGCHLD
if (PyModule_AddIntMacro(m, SIGCHLD))
goto finally;
#endif
#ifdef SIGPWR
if (PyModule_AddIntMacro(m, SIGPWR))
goto finally;
#endif
#ifdef SIGIO
if (PyModule_AddIntMacro(m, SIGIO))
goto finally;
#endif
#ifdef SIGURG
if (PyModule_AddIntMacro(m, SIGURG))
goto finally;
#endif
#ifdef SIGWINCH
if (PyModule_AddIntMacro(m, SIGWINCH))
goto finally;
#endif
#ifdef SIGPOLL
if (PyModule_AddIntMacro(m, SIGPOLL))
goto finally;
#endif
#ifdef SIGSTOP
if (PyModule_AddIntMacro(m, SIGSTOP))
goto finally;
#endif
#ifdef SIGTSTP
if (PyModule_AddIntMacro(m, SIGTSTP))
goto finally;
#endif
#ifdef SIGCONT
if (PyModule_AddIntMacro(m, SIGCONT))
goto finally;
#endif
#ifdef SIGTTIN
if (PyModule_AddIntMacro(m, SIGTTIN))
goto finally;
#endif
#ifdef SIGTTOU
if (PyModule_AddIntMacro(m, SIGTTOU))
goto finally;
#endif
#ifdef SIGVTALRM
if (PyModule_AddIntMacro(m, SIGVTALRM))
goto finally;
#endif
#ifdef SIGPROF
if (PyModule_AddIntMacro(m, SIGPROF))
goto finally;
#endif
#ifdef SIGXCPU
if (PyModule_AddIntMacro(m, SIGXCPU))
goto finally;
#endif
#ifdef SIGXFSZ
if (PyModule_AddIntMacro(m, SIGXFSZ))
goto finally;
#endif
#ifdef SIGRTMIN
if (PyModule_AddIntMacro(m, SIGRTMIN))
goto finally;
#endif
#ifdef SIGRTMAX
if (PyModule_AddIntMacro(m, SIGRTMAX))
goto finally;
#endif
#ifdef SIGINFO
if (PyModule_AddIntMacro(m, SIGINFO))
goto finally;
#endif
#ifdef ITIMER_REAL
if (PyModule_AddIntMacro(m, ITIMER_REAL))
goto finally;
#endif
#ifdef ITIMER_VIRTUAL
if (PyModule_AddIntMacro(m, ITIMER_VIRTUAL))
goto finally;
#endif
#ifdef ITIMER_PROF
if (PyModule_AddIntMacro(m, ITIMER_PROF))
goto finally;
#endif
if (PyModule_AddIntMacro(m, SIGHUP)) goto finally;
if (PyModule_AddIntMacro(m, SIGINT)) goto finally;
if (PyModule_AddIntMacro(m, SIGQUIT)) goto finally;
if (PyModule_AddIntMacro(m, SIGILL)) goto finally;
if (PyModule_AddIntMacro(m, SIGTRAP)) goto finally;
if (PyModule_AddIntMacro(m, SIGIOT)) goto finally;
if (PyModule_AddIntMacro(m, SIGABRT)) goto finally;
if (PyModule_AddIntMacro(m, SIGFPE)) goto finally;
if (PyModule_AddIntMacro(m, SIGKILL)) goto finally;
if (PyModule_AddIntMacro(m, SIGBUS)) goto finally;
if (PyModule_AddIntMacro(m, SIGSEGV)) goto finally;
if (PyModule_AddIntMacro(m, SIGSYS)) goto finally;
if (PyModule_AddIntMacro(m, SIGPIPE)) goto finally;
if (PyModule_AddIntMacro(m, SIGALRM)) goto finally;
if (PyModule_AddIntMacro(m, SIGTERM)) goto finally;
if (PyModule_AddIntMacro(m, SIGUSR1)) goto finally;
if (PyModule_AddIntMacro(m, SIGUSR2)) goto finally;
if (PyModule_AddIntMacro(m, SIGCHLD)) goto finally;
if (PyModule_AddIntMacro(m, SIGPWR)) goto finally;
if (PyModule_AddIntMacro(m, SIGIO)) goto finally;
if (PyModule_AddIntMacro(m, SIGURG)) goto finally;
if (PyModule_AddIntMacro(m, SIGWINCH)) goto finally;
if (PyModule_AddIntMacro(m, SIGPOLL)) goto finally;
if (PyModule_AddIntMacro(m, SIGSTOP)) goto finally;
if (PyModule_AddIntMacro(m, SIGTSTP)) goto finally;
if (PyModule_AddIntMacro(m, SIGCONT)) goto finally;
if (PyModule_AddIntMacro(m, SIGTTIN)) goto finally;
if (PyModule_AddIntMacro(m, SIGTTOU)) goto finally;
if (PyModule_AddIntMacro(m, SIGVTALRM)) goto finally;
if (PyModule_AddIntMacro(m, SIGPROF)) goto finally;
if (PyModule_AddIntMacro(m, SIGXCPU)) goto finally;
if (PyModule_AddIntMacro(m, SIGXFSZ)) goto finally;
if (SIGEMT && PyModule_AddIntMacro(m, SIGEMT)) goto finally;
if (SIGINFO && PyModule_AddIntMacro(m, SIGINFO)) goto finally;
if (SIGRTMIN && PyModule_AddIntMacro(m, SIGRTMIN)) goto finally;
if (SIGRTMAX && PyModule_AddIntMacro(m, SIGRTMAX)) goto finally;
#if defined (HAVE_SETITIMER) || defined (HAVE_GETITIMER)
if (PyModule_AddIntMacro(m, ITIMER_REAL)) goto finally;
if (PyModule_AddIntMacro(m, ITIMER_VIRTUAL)) goto finally;
if (PyModule_AddIntMacro(m, ITIMER_PROF)) goto finally;
ItimerError = PyErr_NewException("signal.ItimerError",
PyExc_IOError, NULL);
if (ItimerError != NULL)