cosmopolitan/libc/runtime/winargs.internal.h

#ifndef COSMOPOLITAN_LIBC_RUNTIME_WINARGS_INTERNAL_H_
#define COSMOPOLITAN_LIBC_RUNTIME_WINARGS_INTERNAL_H_
#include "libc/limits.h"
COSMOPOLITAN_C_START_

struct WinArgs {
  union {
    struct {
      char *argv[8192];
      char *envp[512];
      intptr_t auxv[2][2];
      char argv0buf[256];
      char argblock[32767];
      char envblock[32767];
    };
    char16_t tmp16[257];
  };
} forcealign(16);

COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_LIBC_RUNTIME_WINARGS_INTERNAL_H_ */
Add torture test for zipos file descriptors This change hardens the code for opening /zip/ files using the system call interface. Thread safety and signal safety has been improved for file descriptors in general. We now document fixed addresses that are needed for low level allocations. 2022-06-15 16:19:50 -07:00			`#ifndef COSMOPOLITAN_LIBC_RUNTIME_WINARGS_INTERNAL_H_`
			`#define COSMOPOLITAN_LIBC_RUNTIME_WINARGS_INTERNAL_H_`
Make improvements - Invent openatemp() API - Invent O_UNLINK open flag - Introduce getenv_secure() API - Remove `git pull` from cosmocc - Fix utimes() when path is NULL - Fix mktemp() to never return NULL - Fix utimensat() UTIME_OMIT on XNU - Improve utimensat() code for RHEL5 - Turn `argv[0]` C:/ to /C/ on Windows - Introduce tmpnam() and tmpnam_r() APIs - Fix more const issues with internal APIs - Permit utimes() on WIN32 in O_RDONLY mode - Fix fdopendir() to check fd is a directory - Fix recent crash regression in landlock make - Fix futimens(AT_FDCWD, NULL) to return EBADF - Use workaround so `make -j` doesn't fork bomb - Rename dontdiscard to __wur (just like glibc) - Fix st_size for WIN32 symlinks containing UTF-8 - Introduce stdio ext APIs needed by GNU coreutils - Fix lstat() on WIN32 for symlinks to directories - Move some constants from normalize.inc to limits.h - Fix segv with memchr() and memcmp() overlapping page - Implement POSIX fflush() behavior for reader streams - Implement AT_SYMLINK_NOFOLLOW for utimensat() on WIN32 - Don't change read-only status of existing files on WIN32 - Correctly handle `0x[^[:xdigit:]]` case in strtol() functions 2023-09-06 03:54:42 -07:00			`#include "libc/limits.h"`
Add torture test for zipos file descriptors This change hardens the code for opening /zip/ files using the system call interface. Thread safety and signal safety has been improved for file descriptors in general. We now document fixed addresses that are needed for low level allocations. 2022-06-15 16:19:50 -07:00			`COSMOPOLITAN_C_START_`

			`struct WinArgs {`
Make improvements - Introduce portable sched_getcpu() api - Support GCC's __target_clones__ feature - Make fma() go faster on x86 in default mode - Remove some asan checks from core libraries - WinMain() now ensures $HOME and $USER are defined 2024-02-01 03:39:46 -08:00			`union {`
			`struct {`
			`char *argv[8192];`
			`char *envp[512];`
			`intptr_t auxv[2][2];`
			`char argv0buf[256];`
			`char argblock[32767];`
			`char envblock[32767];`
			`};`
			`char16_t tmp16[257];`
			`};`
Make improvements - We now serialize the file descriptor table when spawning / executing processes on Windows. This means you can now inherit more stuff than just standard i/o. It's needed by bash, which duplicates the console to file descriptor #255. We also now do a better job serializing the environment variables, so you're less likely to encounter E2BIG when using your bash shell. We also no longer coerce environ to uppercase - execve() on Windows now remotely controls its parent process to make them spawn a replacement for itself. Then it'll be able to terminate immediately once the spawn succeeds, without having to linger around for the lifetime as a shell process for proxying the exit code. When process worker thread running in the parent sees the child die, it's given a handle to the new child, to replace it in the process table. - execve() and posix_spawn() on Windows will now provide CreateProcess an explicit handle list. This allows us to remove handle locks which enables better fork/spawn concurrency, with seriously correct thread safety. Other codebases like Go use the same technique. On the other hand fork() still favors the conventional WIN32 inheritence approach which can be a little bit messy, but is controlled by guaranteeing perfectly clean slates at both the spawning and execution boundaries - sigset_t is now 64 bits. Having it be 128 bits was a mistake because there's no reason to use that and it's only supported by FreeBSD. By using the system word size, signal mask manipulation on Windows goes very fast. Furthermore @asyncsignalsafe funcs have been rewritten on Windows to take advantage of signal masking, now that it's much more pleasant to use. - All the overlapped i/o code on Windows has been rewritten for pretty good signal and cancelation safety. We're now able to ensure overlap data structures are cleaned up so long as you don't longjmp() out of out of a signal handler that interrupted an i/o operation. Latencies are also improved thanks to the removal of lots of "busy wait" code. Waits should be optimal for everything except poll(), which shall be the last and final demon we slay in the win32 i/o horror show. - getrusage() on Windows is now able to report RUSAGE_CHILDREN as well as RUSAGE_SELF, thanks to aggregation in the process manager thread. 2023-10-08 05:36:18 -07:00			`} forcealign(16);`
Add torture test for zipos file descriptors This change hardens the code for opening /zip/ files using the system call interface. Thread safety and signal safety has been improved for file descriptors in general. We now document fixed addresses that are needed for low level allocations. 2022-06-15 16:19:50 -07:00
			`COSMOPOLITAN_C_END_`
			`#endif /* COSMOPOLITAN_LIBC_RUNTIME_WINARGS_INTERNAL_H_ */`