2020-06-15 14:18:57 +00:00
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#ifndef COSMOPOLITAN_LIBC_X_H_
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#define COSMOPOLITAN_LIBC_X_H_
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Improve ZIP filesystem and change its prefix
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
2021-08-22 08:04:18 +00:00
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#include "libc/calls/struct/rusage.h"
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2020-11-25 16:19:00 +00:00
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#include "libc/calls/struct/sigaction.h"
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2020-06-15 14:18:57 +00:00
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#include "libc/calls/struct/timespec.h"
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#include "libc/calls/struct/timeval.h"
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#include "libc/fmt/pflink.h"
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2020-11-25 16:19:00 +00:00
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#include "libc/stdio/stdio.h"
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2020-06-15 14:18:57 +00:00
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│─╝
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Standard Library veneers for folks not building embedded RTOS */
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#define _XPNN paramsnonnull()
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Import C++ Standard Template Library
You can now use the hardest fastest and most dangerous language there is
with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few
breaking changes needed to be made to help this go smoothly.
- Rename nothrow to dontthrow
- Rename nodiscard to dontdiscard
- Add some libm functions, e.g. lgamma, nan, etc.
- Change intmax_t from int128 to int64 like everything else
- Introduce %jjd formatting directive for int128_t
- Introduce strtoi128(), strtou128(), etc.
- Rename bsrmax() to bsr128()
Some of the templates that should be working currently are std::vector,
std::string, std::map, std::set, std::deque, etc.
2022-03-22 12:51:41 +00:00
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#define _XRET dontthrow nocallback dontdiscard returnsnonnull
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2020-06-15 14:18:57 +00:00
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#define _XMAL returnspointerwithnoaliases _XRET
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#define _XMALPG returnsaligned((PAGESIZE)) _XMAL
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » system calls ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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int xsigaction(int, void *, uint64_t, uint64_t, struct sigaction *);
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int xwrite(int, const void *, uint64_t);
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » memory ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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2020-12-05 20:20:41 +00:00
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void xdie(void) wontreturn;
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2021-02-26 02:30:17 +00:00
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char *xdtoa(double) _XMAL;
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2021-02-21 19:06:18 +00:00
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char *xdtoaf(float) _XMAL;
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2021-02-26 02:30:17 +00:00
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char *xdtoal(long double) _XMAL;
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2020-06-15 14:18:57 +00:00
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char *xasprintf(const char *, ...) printfesque(1) paramsnonnull((1)) _XMAL;
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char *xvasprintf(const char *, va_list) _XPNN _XMAL;
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char *xgetline(struct FILE *) _XPNN mallocesque;
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void *xmalloc(size_t) attributeallocsize((1)) _XMAL;
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2021-04-18 18:34:59 +00:00
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void *xrealloc(void *, size_t)
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Import C++ Standard Template Library
You can now use the hardest fastest and most dangerous language there is
with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few
breaking changes needed to be made to help this go smoothly.
- Rename nothrow to dontthrow
- Rename nodiscard to dontdiscard
- Add some libm functions, e.g. lgamma, nan, etc.
- Change intmax_t from int128 to int64 like everything else
- Introduce %jjd formatting directive for int128_t
- Introduce strtoi128(), strtou128(), etc.
- Rename bsrmax() to bsr128()
Some of the templates that should be working currently are std::vector,
std::string, std::map, std::set, std::deque, etc.
2022-03-22 12:51:41 +00:00
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attributeallocsize((2)) dontthrow nocallback dontdiscard;
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2020-06-15 14:18:57 +00:00
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void *xcalloc(size_t, size_t) attributeallocsize((1, 2)) _XMAL;
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void *xvalloc(size_t) attributeallocsize((1)) _XMALPG;
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void *xmemalign(size_t, size_t) attributeallocalign((1))
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attributeallocsize((2)) _XMAL;
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2020-10-11 04:18:53 +00:00
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void *xmemalignzero(size_t, size_t) attributeallocalign((1))
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attributeallocsize((2)) _XMAL;
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2020-06-15 14:18:57 +00:00
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char *xstrdup(const char *) _XPNN _XMAL;
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2020-06-21 07:10:11 +00:00
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char *xstrndup(const char *, size_t) _XPNN _XMAL;
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2020-06-15 14:18:57 +00:00
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char *xstrcat(const char *, ...) paramsnonnull((1)) nullterminated() _XMAL;
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char *xstrmul(const char *, size_t) paramsnonnull((1)) _XMAL;
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2021-01-29 09:27:09 +00:00
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char *xinet_ntop(int, const void *) _XPNN _XMAL;
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2021-02-01 11:33:13 +00:00
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void *xunbinga(size_t, const char16_t *) attributeallocalign((1)) _XMAL _XRET;
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void *xunbing(const char16_t *) _XMAL _XRET;
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Import C++ Standard Template Library
You can now use the hardest fastest and most dangerous language there is
with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few
breaking changes needed to be made to help this go smoothly.
- Rename nothrow to dontthrow
- Rename nodiscard to dontdiscard
- Add some libm functions, e.g. lgamma, nan, etc.
- Change intmax_t from int128 to int64 like everything else
- Introduce %jjd formatting directive for int128_t
- Introduce strtoi128(), strtou128(), etc.
- Rename bsrmax() to bsr128()
Some of the templates that should be working currently are std::vector,
std::string, std::map, std::set, std::deque, etc.
2022-03-22 12:51:41 +00:00
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char16_t *utf8toutf16(const char *, size_t, size_t *) dontdiscard;
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char *utf16toutf8(const char16_t *, size_t, size_t *) dontdiscard;
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wchar_t *utf8toutf32(const char *, size_t, size_t *) dontdiscard;
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wchar_t *utf16to32(const char16_t *, size_t, size_t *) dontdiscard;
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char *xhomedir(void) dontdiscard;
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char *xstripext(const char *) dontdiscard;
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char *xstripexts(const char *) dontdiscard;
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2021-10-02 15:17:04 +00:00
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void *xload(bool *, void **, const void *, size_t, size_t);
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void *xloadzd(bool *, void **, const void *, size_t, size_t, size_t, size_t,
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uint32_t);
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2021-01-29 09:27:09 +00:00
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » files ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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int rmrf(const char *);
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2021-01-30 03:49:34 +00:00
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int makedirs(const char *, unsigned);
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2020-12-24 07:42:56 +00:00
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char *xdirname(const char *) paramsnonnull() _XMAL;
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2020-09-28 08:13:56 +00:00
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char *xjoinpaths(const char *, const char *) paramsnonnull() _XMAL;
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2021-08-26 04:35:58 +00:00
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char *xreadlink(const char *) paramsnonnull() _XMAL;
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char *xreadlinkat(int, const char *) paramsnonnull() _XMAL;
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2020-06-15 14:18:57 +00:00
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » time ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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char *xiso8601i(int) mallocesque;
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char *xiso8601tv(struct timeval *) mallocesque;
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char *xiso8601ts(struct timespec *) mallocesque;
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » input / output ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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2021-07-06 20:39:18 +00:00
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void *xslurp(const char *, size_t *)
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2021-06-24 19:31:26 +00:00
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paramsnonnull((1)) returnspointerwithnoaliases
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Import C++ Standard Template Library
You can now use the hardest fastest and most dangerous language there is
with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few
breaking changes needed to be made to help this go smoothly.
- Rename nothrow to dontthrow
- Rename nodiscard to dontdiscard
- Add some libm functions, e.g. lgamma, nan, etc.
- Change intmax_t from int128 to int64 like everything else
- Introduce %jjd formatting directive for int128_t
- Introduce strtoi128(), strtou128(), etc.
- Rename bsrmax() to bsr128()
Some of the templates that should be working currently are std::vector,
std::string, std::map, std::set, std::deque, etc.
2022-03-22 12:51:41 +00:00
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returnsaligned((PAGESIZE)) dontdiscard;
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2020-09-28 08:13:56 +00:00
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int xbarf(const char *, const void *, size_t);
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2020-06-15 14:18:57 +00:00
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » safety ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#define xstrcat(...) (xstrcat)(__VA_ARGS__, NULL)
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Improve ZIP filesystem and change its prefix
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
2021-08-22 08:04:18 +00:00
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » processes ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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int xspawn(struct rusage *);
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int xvspawn(void (*)(void *), void *, struct rusage *);
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2020-06-15 14:18:57 +00:00
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » generic typing ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#if __STDC_VERSION__ + 0 >= 201112
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#define xiso8601(TS) \
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_Generic(*(TS), struct timeval : xiso8601tv, default : xiso8601ts)(TS)
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#endif /* C11 */
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § eXtended apis » link-time optimizations ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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#define xasprintf(FMT, ...) (xasprintf)(PFLINK(FMT), ##__VA_ARGS__)
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#define xvasprintf(FMT, VA) (xvasprintf)(PFLINK(FMT), VA)
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Introduce --strace flag for system call tracing
This is similar to the --ftrace (c function call trace) flag, except
it's less noisy since it only logs system calls to stderr. Having this
flag is valuable because (1) system call tracing tells us a lot about
the behavior of complex programs and (2) it's usually very hard to get
system call tracing on various operating systems, e.g. strace, ktrace,
dtruss, truss, nttrace, etc. Especially on Apple platforms where even
with the special boot trick, debuggers still aren't guaranteed to work.
make -j8 o//examples
o//examples/hello.com --strace
This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg
extra information will be printed.
make -j8 MODE=dbg o/dbg/examples
o/dbg/examples/hello.com --strace |& less
This change also changes:
- Rename IsText() → _istext()
- Rename IsUtf8() → _isutf8()
- Fix madvise() on Windows NT
- Fix empty string case of inet_ntop()
- vfork() wrapper now saves and restores errno
- Update xsigaction() to yoink syscall support
2022-03-19 01:07:28 +00:00
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#define xsigaction(SIG, HANDLER, FLAGS, MASK, OLD) \
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({ \
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__SIGACTION_YOINK(SIG); \
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xsigaction(SIG, HANDLER, FLAGS, MASK, OLD); \
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})
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2020-06-15 14:18:57 +00:00
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#endif
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_X_H_ */
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