cosmopolitan/libc
Justine Tunney 281a0f2730 Implement raw system call for redbean lua code
You can now call functions like fork() from Lua and it'll work across
all supported platforms, including Windows. This gives you a level of
control of the system that Lua traditionally hasn't been able to have
due to its focus on old portable stdio rather modern POSIX APIs. Demo
code has been added to redbean-demo.com to show how it works.

This change also modifies Lua so that integer literals with a leading
zero will be interpreted as octal. That should help avoid shooting in
the foot with POSIX APIs that frequently use octal mode bits.

This change fixes a bug in opendir(".") on New Technology.

Lastly, redbean will now serve crash reports to private network IPs.
This is consistent with other frameworks. However that isn't served
to public IPs unless the -E flag is passed to redbean at startup.
2022-04-13 08:53:24 -07:00
..
alg Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
bits Improve locks and signals 2022-04-12 05:20:17 -07:00
calls Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
crt Fix more things 2022-03-24 00:12:29 -07:00
dns Change noinline to dontinline (#312) 2021-11-12 15:12:18 -08:00
elf Improve signals and memory protection 2022-04-12 22:11:00 -07:00
fmt Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
integral Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
intrin Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
isystem Fix some win32 definitions 2022-03-22 19:54:36 -07:00
linux [WIP] Threading (#282) 2021-10-13 11:26:05 -07:00
log Improve signals and memory protection 2022-04-12 22:11:00 -07:00
mem Improve system call support on NT 2022-04-07 20:30:04 -07:00
nexgen32e Improve locks and signals 2022-04-12 05:20:17 -07:00
nt Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
rand Improve locks and signals 2022-04-12 05:20:17 -07:00
runtime Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
sock Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
stdio Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
str Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
stubs Get Redbean fork() working on the New Technology 2022-03-20 08:01:14 -07:00
sysv Implement raw system call for redbean lua code 2022-04-13 08:53:24 -07:00
testlib Improve system call support on NT 2022-04-07 20:30:04 -07:00
thread Improve locks and signals 2022-04-12 05:20:17 -07:00
time Improve locks and signals 2022-04-12 05:20:17 -07:00
tinymath Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
unicode Fix more things 2022-03-24 00:12:29 -07:00
x Improve locks and signals 2022-04-12 05:20:17 -07:00
zipos Add support for symbol table in .com files 2022-03-23 06:34:46 -07:00
assert.h Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
complex.h Make improvements 2020-12-01 03:43:40 -08:00
dce.h Restart CI for New Technology and UBSAN hunting 2022-03-21 04:32:57 -07:00
disclaimer.inc Improve Libc by making Python work even better 2021-08-18 22:16:23 -07:00
dos.h Mold the redbean binary to minimize page faults 2021-05-03 12:14:13 -07:00
errno.h Improve ZIP filesystem and change its prefix 2021-08-22 01:11:53 -07:00
inttypes.h Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
libc.mk Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
limits.h Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
literal.h Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
mach.h Perform some minor fixups 2021-03-16 22:19:51 -07:00
macho.internal.h Get Cosmopolitan into releasable state 2020-11-25 08:19:00 -08:00
macros-cpp.internal.inc Restart CI for New Technology and UBSAN hunting 2022-03-21 04:32:57 -07:00
macros.internal.h Make fixes, improvements, and chibicc python bindings 2021-10-08 08:41:57 -07:00
macros.internal.inc Clean old .source directive out of asm code 2022-03-18 12:43:21 -07:00
math.h Import C++ Standard Template Library 2022-03-22 06:41:54 -07:00
notice.inc Improve Libc by making Python work even better 2021-08-18 22:16:23 -07:00
notice.internal.h Add epoll and do more release readiness changes 2020-11-28 12:01:51 -08:00
paths.h Initial import 2020-06-15 07:18:57 -07:00
README.md Add x86_64-linux-gnu emulator 2020-08-25 04:43:42 -07:00
zip.h Add MODE=optlinux build mode (#141) 2021-10-14 19:36:49 -07:00

SYNOPSIS

Cosmopolitan Standard Library.

OVERVIEW

This directory defines static archives defining functions, like printf(), mmap(), win32, etc. Please note that the Cosmopolitan build configuration doesn't link any C/C++ library dependencies by default, so you still have the flexibility to choose the one provided by your system. If you'd prefer Cosmopolitan, just add $(LIBC) and $(CRT) to your linker arguments.

Your library is compromised of many bite-sized static archives. We use the checkdeps tool to guarantee that the contents of the archives are organized in a logical way that's easy to use with or without our makefile infrastructure, since there's no cyclic dependencies.

The Cosmopolitan Library exports only the most stable canonical system calls for all supported operating systems, regardless of which platform is used for compilation. We polyfill many of the APIs, e.g. read(), write() so they work consistently everywhere while other apis, e.g. CreateWindowEx(), might only work on one platform, in which case they become no-op functions on others.

Cosmopolitan polyfill wrappers will usually use the dollar sign naming convention, so they may be bypassed when necessary. This same convention is used when multiple implementations of string library and other performance-critical function are provided to allow Cosmopolitan to go fast on both old and newer computers.

We take an approach to configuration that relies heavily on the compiler's dead code elimination pass (libc/dce.h). Most of the code is written so that, for example, folks not wanting support for OpenBSD can flip a bit in SUPPORT_VECTOR and that code will be omitted from the build. The same is true for builds that are tuned using -march=native which effectively asks the library to not include runtime support hooks for x86 processors older than what you use.

Please note that, unlike Cygwin or MinGW, Cosmopolitan does not achieve broad support by bolting on a POSIX emulation layer. We do nothing more than (in most cases) stateless API translations that get you 90% of the way there in a fast lightweight manner. We therefore can't address some of the subtle differences, such as the nuances of absolute paths on Windows. Our approach could be compared to something more along the lines of, "the Russians just used a pencil to write in space", versus spending millions researching a pen like NASA.