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zig/lib/std/c.zig

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`@import("builtin")` instead of `@compileVar` See #226 Closes #220
2017-05-02 01:12:38 +08:00
const builtin = @import("builtin");
behavior tests passing on Linux
2019-05-27 07:56:37 +08:00
const std = @import("std");
const page_size = std.mem.page_size;
extract posix functions from std/os.zig to std/os/posix.zig See #2380
2019-05-19 12:53:24 +08:00
run zig fmt to update `use` to `usingnamespace`
2019-05-30 06:55:42 +08:00
pub usingnamespace @import("os/bits.zig");
improvements for windows and libc integration * standard library knows if it is linking against libc and will sometimes call libc functions in that case instead of providing redundant definitions * fix infinite loop bug when resolving use declarations * allow calling the same C function from different C imports. closes #277 * push more logic from compiler to std/bootstrap.zig * standard library provides way to access errno closes #274 * fix compile error in standard library for windows * add implementation of getRandomBytes for windows
2017-03-23 14:59:58 +08:00
run zig fmt to update `use` to `usingnamespace`
2019-05-30 06:55:42 +08:00
pub usingnamespace switch (builtin.os) {
rename "posix" to "bits"
2019-05-25 07:36:09 +08:00
.linux => @import("c/linux.zig"),
extract posix functions from std/os.zig to std/os/posix.zig See #2380
2019-05-19 12:53:24 +08:00
.windows => @import("c/windows.zig"),
.macosx, .ios, .tvos, .watchos => @import("c/darwin.zig"),
.freebsd => @import("c/freebsd.zig"),
.netbsd => @import("c/netbsd.zig"),
this empty import workaround no longer necessary
2019-03-14 01:45:51 +08:00
else => struct {},
improvements for windows and libc integration * standard library knows if it is linking against libc and will sometimes call libc functions in that case instead of providing redundant definitions * fix infinite loop bug when resolving use declarations * allow calling the same C function from different C imports. closes #277 * push more logic from compiler to std/bootstrap.zig * standard library provides way to access errno closes #274 * fix compile error in standard library for windows * add implementation of getRandomBytes for windows
2017-03-23 14:59:58 +08:00
};
fixes for windows to build self hosted compiler
2019-05-28 03:34:46 +08:00
pub fn getErrno(rc: var) u16 {
extract posix functions from std/os.zig to std/os/posix.zig See #2380
2019-05-19 12:53:24 +08:00
if (rc == -1) {
fixes for windows to build self hosted compiler
2019-05-28 03:34:46 +08:00
return @intCast(u16, _errno().*);
extract posix functions from std/os.zig to std/os/posix.zig See #2380
2019-05-19 12:53:24 +08:00
} else {
return 0;
}
}
std.os.getrandom does a libc version check closes #397
2019-07-09 02:26:40 +08:00
/// The return type is `type` to force comptime function call execution.
/// TODO: https://github.com/ziglang/zig/issues/425
/// If not linking libc, returns struct{pub const ok = false;}
/// If linking musl libc, returns struct{pub const ok = true;}
/// If linking gnu libc (glibc), the `ok` value will be true if the target
/// version is greater than or equal to `glibc_version`.
/// If linking a libc other than these, returns `false`.
pub fn versionCheck(glibc_version: builtin.Version) type {
return struct {
pub const ok = blk: {
if (!builtin.link_libc) break :blk false;
switch (builtin.abi) {
.musl, .musleabi, .musleabihf => break :blk true,
.gnu, .gnuabin32, .gnuabi64, .gnueabi, .gnueabihf, .gnux32 => {
const ver = builtin.glibc_version orelse break :blk false;
if (ver.major < glibc_version.major) break :blk false;
if (ver.major > glibc_version.major) break :blk true;
if (ver.minor < glibc_version.minor) break :blk false;
if (ver.minor > glibc_version.minor) break :blk true;
break :blk ver.patch >= glibc_version.patch;
},
else => break :blk false,
}
};
};
}
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
// TODO https://github.com/ziglang/zig/issues/265 on this whole file
add preliminary windows support to std.io.COutStream
2019-04-25 12:24:25 +08:00
pub extern "c" fn fopen(filename: [*]const u8, modes: [*]const u8) ?*FILE;
pub extern "c" fn fclose(stream: *FILE) c_int;
translate-c: a little closer to self-hosted implementation
2019-04-22 05:24:58 +08:00
pub extern "c" fn fwrite(ptr: [*]const u8, size_of_type: usize, item_count: usize, stream: *FILE) usize;
pub extern "c" fn fread(ptr: [*]u8, size_of_type: usize, item_count: usize, stream: *FILE) usize;
add std.c.printf
2019-08-21 02:42:39 +08:00
pub extern "c" fn printf(format: [*]const u8, ...) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 17:10:11 +08:00
pub extern "c" fn abort() noreturn;
pub extern "c" fn exit(code: c_int) noreturn;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn isatty(fd: fd_t) c_int;
pub extern "c" fn close(fd: fd_t) c_int;
use close$NOCANCEL on darwin
2019-05-28 02:41:13 +08:00
pub extern "c" fn @"close$NOCANCEL"(fd: fd_t) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn fstat(fd: fd_t, buf: *Stat) c_int;
pub extern "c" fn @"fstat$INODE64"(fd: fd_t, buf: *Stat) c_int;
significantly increase test coverage * add zig build option `-Dskip-libc` to skip tests that build libc (e.g. if you don't want to wait for musl to build) * add `-Denable-wine` option which uses wine to run cross compiled windows tests on non-windows hosts * add `-Denable-qemu` option which uses qemu to run cross compiled foreign architecture tests * add `-Denable-foreign-glibc=path` option which combined with `-Denable-qemu` enables running cross compiled tests that link against glibc. See https://github.com/ziglang/zig/wiki/Updating-libc#glibc for how to produce this directory. * the test matrix is done manually. release test builds are only enabled by default for the native target. this should save us some CI time, while still providing decent coverage of release builds. - add test coverage for `x86_64-linux-musl -lc` (building musl libc) - add test coverage for `x86_64-linux-gnu -lc` (building glibc) - add test coverage for `aarch64v8_5a-linux-none` - add test coverage for `aarch64v8_5a-linux-musl -lc` (building musl libc) - add test coverage for `aarch64v8_5a-linux-gnu -lc` (building glibc) - add test coverage for `arm-linux-none` - test coverage for `arm-linux-musleabihf -lc` (building musl libc) is disabled due to #3286 - test coverage for `arm-linux-gnueabihf -lc` (building glibc) is disabled due to #3287 - test coverage for `x86_64-windows-gnu -lc` (building mingw-w64) is disabled due to #3285 * enable qemu testing on the Linux CI job. There's not really a good reason to enable wine, since we have a Windows CI job as well. * remove the no longer needed `--build-file ../build.zig` from CI scripts * fix bug in glibc compilation where it wasn't properly reading the abi list txt files, resulting in "key not found" error. * std.build.Target gains: - isNetBSD - isLinux - osRequiresLibC - getArchPtrBitWidth - getExternalExecutor * zig build system gains support for enabling wine and enabling qemu. `artifact.enable_wine = true;`, `artifact.enable_qemu = true;`. This communicates that the system has these tools installed and the build system will use them to run tests. * zig build system gains support for overriding the dynamic linker of an executable artifact. * fix std.c.lseek prototype. makes behavior tests for arm-linux-musleabihf pass. * disable std lib tests that are failing on ARM. See #3288, #3289 * provide `std.os.off_t`. * disable some of the compiler_rt symbols for arm 32 bit. Fixes compiler_rt tests for arm 32 bit * add __stack_chk_guard when linking against glibc. Fixes std lib tests for aarch64-linux-gnu * workaround for "unable to inline function" using `@inlineCall`. Fixes compiler_rt tests for arm 32 bit.
2019-09-22 11:55:56 +08:00
pub extern "c" fn lseek(fd: fd_t, offset: off_t, whence: c_int) off_t;
behavior tests passing on Linux
2019-05-27 07:56:37 +08:00
pub extern "c" fn open(path: [*]const u8, oflag: c_uint, ...) c_int;
improvements to std lib for event-based I/O
2019-08-17 09:29:29 +08:00
pub extern "c" fn openat(fd: c_int, path: [*]const u8, oflag: c_uint, ...) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 17:10:11 +08:00
pub extern "c" fn raise(sig: c_int) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn read(fd: fd_t, buf: [*]u8, nbyte: usize) isize;
make the std lib support event-based I/O also add -fstack-report
2019-09-10 12:25:37 +08:00
pub extern "c" fn readv(fd: c_int, iov: [*]const iovec, iovcnt: c_uint) isize;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn pread(fd: fd_t, buf: [*]u8, nbyte: usize, offset: u64) isize;
enable test coverage for armv8-linux-musleabihf * fix libc prototypes of offsets to have correct integer sizes and signedness. This gets all behavior tests to pass for armv8-linux-musleabihf * fix linux mmap syscall to have correct integer size and signedness for offset * disable failing armv8-linux-musleabihf std lib tests. See 3289. I suspect compiler-rt issue. Note these tests fail with this target triple regardless of whether musl is actually linked (-lc).
2019-09-26 03:57:13 +08:00
pub extern "c" fn preadv(fd: c_int, iov: [*]const iovec, iovcnt: c_uint, offset: u64) isize;
std.event.Loop: fix not waking up after file system I/O for single threaded event loops
2019-08-17 11:19:13 +08:00
pub extern "c" fn writev(fd: c_int, iov: [*]const iovec_const, iovcnt: c_uint) isize;
enable test coverage for armv8-linux-musleabihf * fix libc prototypes of offsets to have correct integer sizes and signedness. This gets all behavior tests to pass for armv8-linux-musleabihf * fix linux mmap syscall to have correct integer size and signedness for offset * disable failing armv8-linux-musleabihf std lib tests. See 3289. I suspect compiler-rt issue. Note these tests fail with this target triple regardless of whether musl is actually linked (-lc).
2019-09-26 03:57:13 +08:00
pub extern "c" fn pwritev(fd: c_int, iov: [*]const iovec_const, iovcnt: c_uint, offset: u64) isize;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
pub extern "c" fn stat(noalias path: [*]const u8, noalias buf: *Stat) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn write(fd: fd_t, buf: [*]const u8, nbyte: usize) isize;
pub extern "c" fn pwrite(fd: fd_t, buf: [*]const u8, nbyte: usize, offset: u64) isize;
enable test coverage for armv8-linux-musleabihf * fix libc prototypes of offsets to have correct integer sizes and signedness. This gets all behavior tests to pass for armv8-linux-musleabihf * fix linux mmap syscall to have correct integer size and signedness for offset * disable failing armv8-linux-musleabihf std lib tests. See 3289. I suspect compiler-rt issue. Note these tests fail with this target triple regardless of whether musl is actually linked (-lc).
2019-09-26 03:57:13 +08:00
pub extern "c" fn mmap(addr: ?*align(page_size) c_void, len: usize, prot: c_uint, flags: c_uint, fd: fd_t, offset: u64) *c_void;
behavior tests passing on Linux
2019-05-27 07:56:37 +08:00
pub extern "c" fn munmap(addr: *align(page_size) c_void, len: usize) c_int;
pub extern "c" fn mprotect(addr: *align(page_size) c_void, len: usize, prot: c_uint) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
pub extern "c" fn unlink(path: [*]const u8) c_int;
pub extern "c" fn getcwd(buf: [*]u8, size: usize) ?[*]u8;
tests passing on linux
2019-05-27 11:35:26 +08:00
pub extern "c" fn waitpid(pid: c_int, stat_loc: *c_uint, options: c_uint) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 17:10:11 +08:00
pub extern "c" fn fork() c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
pub extern "c" fn access(path: [*]const u8, mode: c_uint) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn pipe(fds: *[2]fd_t) c_int;
pub extern "c" fn pipe2(fds: *[2]fd_t, flags: u32) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
pub extern "c" fn mkdir(path: [*]const u8, mode: c_uint) c_int;
pub extern "c" fn symlink(existing: [*]const u8, new: [*]const u8) c_int;
pub extern "c" fn rename(old: [*]const u8, new: [*]const u8) c_int;
pub extern "c" fn chdir(path: [*]const u8) c_int;
pub extern "c" fn execve(path: [*]const u8, argv: [*]const ?[*]const u8, envp: [*]const ?[*]const u8) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn dup(fd: fd_t) c_int;
pub extern "c" fn dup2(old_fd: fd_t, new_fd: fd_t) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
pub extern "c" fn readlink(noalias path: [*]const u8, noalias buf: [*]u8, bufsize: usize) isize;
pub extern "c" fn realpath(noalias file_name: [*]const u8, noalias resolved_name: [*]u8) ?[*]u8;
use * for pointer type instead of & See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
2018-05-31 22:56:59 +08:00
pub extern "c" fn sigprocmask(how: c_int, noalias set: *const sigset_t, noalias oset: ?*sigset_t) c_int;
darwin: fix incorrect timeval struct type closes #1648 I also added some more extern functions for darwin time functions, although nothing depends on them currently.
2019-02-01 07:47:45 +08:00
pub extern "c" fn gettimeofday(noalias tv: ?*timeval, noalias tz: ?*timezone) c_int;
use * for pointer type instead of & See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
2018-05-31 22:56:59 +08:00
pub extern "c" fn sigaction(sig: c_int, noalias act: *const Sigaction, noalias oact: ?*Sigaction) c_int;
pub extern "c" fn nanosleep(rqtp: *const timespec, rmtp: ?*timespec) c_int;
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 17:10:11 +08:00
pub extern "c" fn setreuid(ruid: c_uint, euid: c_uint) c_int;
pub extern "c" fn setregid(rgid: c_uint, egid: c_uint) c_int;
disallow single-item pointer indexing add pointer arithmetic for unknown length pointer
2018-06-04 13:09:15 +08:00
pub extern "c" fn rmdir(path: [*]const u8) c_int;
extract posix functions from std/os.zig to std/os/posix.zig See #2380
2019-05-19 12:53:24 +08:00
pub extern "c" fn getenv(name: [*]const u8) ?[*]u8;
freebsd fixes
2019-05-28 05:28:59 +08:00
pub extern "c" fn sysctl(name: [*]const c_int, namelen: c_uint, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn sysctlbyname(name: [*]const u8, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
pub extern "c" fn sysctlnametomib(name: [*]const u8, mibp: ?*c_int, sizep: ?*usize) c_int;
libc implementation of gethostname
2019-09-23 03:36:11 +08:00
pub extern "c" fn gethostname(name: [*]u8, len: usize) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn bind(socket: fd_t, address: ?*const sockaddr, address_len: socklen_t) c_int;
tests passing on linux
2019-05-27 11:35:26 +08:00
pub extern "c" fn socket(domain: c_uint, sock_type: c_uint, protocol: c_uint) c_int;
pub extern "c" fn listen(sockfd: fd_t, backlog: c_uint) c_int;
pub extern "c" fn getsockname(sockfd: fd_t, noalias addr: *sockaddr, noalias addrlen: *socklen_t) c_int;
pub extern "c" fn connect(sockfd: fd_t, sock_addr: *const sockaddr, addrlen: socklen_t) c_int;
pub extern "c" fn accept4(sockfd: fd_t, addr: *sockaddr, addrlen: *socklen_t, flags: c_uint) c_int;
pub extern "c" fn getsockopt(sockfd: fd_t, level: c_int, optname: c_int, optval: *c_void, optlen: *socklen_t) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn kill(pid: pid_t, sig: c_int) c_int;
starting to fix the regressions
2019-05-25 10:52:07 +08:00
pub extern "c" fn getdirentries(fd: fd_t, buf_ptr: [*]u8, nbytes: usize, basep: *i64) isize;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn setgid(ruid: c_uint, euid: c_uint) c_int;
pub extern "c" fn setuid(uid: c_uint) c_int;
pub extern "c" fn clock_gettime(clk_id: c_int, tp: *timespec) c_int;
pub extern "c" fn clock_getres(clk_id: c_int, tp: *timespec) c_int;
Add c allocator (#542)
2017-10-17 20:13:04 +08:00
disallow unknown-length pointer to opaque This also means that translate-c has to detect when a pointer to opaque is happening, and use `*` instead of `[*]`. See #1059
2018-06-06 06:03:21 +08:00
pub extern "c" fn aligned_alloc(alignment: usize, size: usize) ?*c_void;
pub extern "c" fn malloc(usize) ?*c_void;
breaking changes to std.mem.Allocator interface API Before, allocator implementations had to provide `allocFn`, `reallocFn`, and `freeFn`. Now, they must provide only `reallocFn` and `shrinkFn`. Reallocating from a zero length slice is allocation, and shrinking to a zero length slice is freeing. When the new memory size is less than or equal to the previous allocation size, `reallocFn` now has the option to return `error.OutOfMemory` to indicate that the allocator would not be able to take advantage of the new size. For more details see #1306. This commit closes #1306. This commit paves the way to solving #2009. This commit also introduces a memory leak to all coroutines. There is an issue where a coroutine calls the function and it frees its own stack frame, but then the return value of `shrinkFn` is a slice, which is implemented as an sret struct. Writing to the return pointer causes invalid memory write. We could work around it by having a global helper function which has a void return type and calling that instead. But instead this hack will suffice until I rework coroutines to be non-allocating. Basically coroutines are not supported right now until they are reworked as in #1194.
2019-03-16 05:47:47 +08:00
pub extern "c" fn realloc(?*c_void, usize) ?*c_void;
disallow unknown-length pointer to opaque This also means that translate-c has to detect when a pointer to opaque is happening, and use `*` instead of `[*]`. See #1059
2018-06-06 06:03:21 +08:00
pub extern "c" fn free(*c_void) void;
pub extern "c" fn posix_memalign(memptr: **c_void, alignment: usize, size: usize) c_int;
*WIP* use pthreads when linking libc
2018-04-29 11:30:13 +08:00
move some of the installation from cmake to zig build This moves the installation of shipped source files from large CMakeLists.txt lists to zig build recursive directory installation. On my computer a cmake `make install` takes 2.4 seconds even when it has to do nothing, and prints a lot of unnecessary lines to stdout that say "up-to-date: [some file it is installing]". After this commit, the default output of `make` is down to 1 second, and it does not print any junk to stdout. Further, a `make install` is no longer required and `make` is sufficient. This closes #2874. It also closes #2585. `make` now always invokes `zig build` for installing files and libuserland.a, and zig's own caching system makes that go fast.
2019-07-14 15:06:20 +08:00
pub extern "c" fn utimensat(dirfd: fd_t, pathname: [*]const u8, times: *[2]timespec, flags: u32) c_int;
pub extern "c" fn futimens(fd: fd_t, times: *const [2]timespec) c_int;
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn pthread_create(noalias newthread: *pthread_t, noalias attr: ?*const pthread_attr_t, start_routine: extern fn (?*c_void) ?*c_void, noalias arg: ?*c_void) c_int;
pub extern "c" fn pthread_attr_init(attr: *pthread_attr_t) c_int;
pub extern "c" fn pthread_attr_setstack(attr: *pthread_attr_t, stackaddr: *c_void, stacksize: usize) c_int;
pub extern "c" fn pthread_attr_destroy(attr: *pthread_attr_t) c_int;
pub extern "c" fn pthread_self() pthread_t;
pub extern "c" fn pthread_join(thread: pthread_t, arg_return: ?*?*c_void) c_int;
*WIP* use pthreads when linking libc
2018-04-29 11:30:13 +08:00
more progress on posix API layer see #2380
2019-05-20 13:15:23 +08:00
pub extern "c" fn kqueue() c_int;
pub extern "c" fn kevent(
kq: c_int,
changelist: [*]const Kevent,
nchanges: c_int,
eventlist: [*]Kevent,
nevents: c_int,
timeout: ?*const timespec,
) c_int;
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