package os foreign import dl "system:dl" foreign import libc "system:c" import "base:runtime" import "core:strings" import "core:c" Handle :: distinct i32 File_Time :: distinct u64 Errno :: distinct i32 INVALID_HANDLE :: ~Handle(0) ERROR_NONE: Errno : 0 /* No error */ EPERM: Errno : 1 /* Operation not permitted */ ENOENT: Errno : 2 /* No such file or directory */ EINTR: Errno : 4 /* Interrupted system call */ ESRCH: Errno : 3 /* No such process */ EIO: Errno : 5 /* Input/output error */ ENXIO: Errno : 6 /* Device not configured */ E2BIG: Errno : 7 /* Argument list too long */ ENOEXEC: Errno : 8 /* Exec format error */ EBADF: Errno : 9 /* Bad file descriptor */ ECHILD: Errno : 10 /* No child processes */ EDEADLK: Errno : 11 /* Resource deadlock avoided. 11 was EAGAIN */ ENOMEM: Errno : 12 /* Cannot allocate memory */ EACCES: Errno : 13 /* Permission denied */ EFAULT: Errno : 14 /* Bad address */ ENOTBLK: Errno : 15 /* Block device required */ EBUSY: Errno : 16 /* Device busy */ EEXIST: Errno : 17 /* File exists */ EXDEV: Errno : 18 /* Cross-device link */ ENODEV: Errno : 19 /* Operation not supported by device */ ENOTDIR: Errno : 20 /* Not a directory */ EISDIR: Errno : 21 /* Is a directory */ EINVAL: Errno : 22 /* Invalid argument */ ENFILE: Errno : 23 /* Too many open files in system */ EMFILE: Errno : 24 /* Too many open files */ ENOTTY: Errno : 25 /* Inappropriate ioctl for device */ ETXTBSY: Errno : 26 /* Text file busy */ EFBIG: Errno : 27 /* File too large */ ENOSPC: Errno : 28 /* No space left on device */ ESPIPE: Errno : 29 /* Illegal seek */ EROFS: Errno : 30 /* Read-only file system */ EMLINK: Errno : 31 /* Too many links */ EPIPE: Errno : 32 /* Broken pipe */ /* math software */ EDOM: Errno : 33 /* Numerical argument out of domain */ ERANGE: Errno : 34 /* Result too large or too small */ /* non-blocking and interrupt i/o */ EAGAIN: Errno : 35 /* Resource temporarily unavailable */ EWOULDBLOCK: Errno : EAGAIN /* Operation would block */ EINPROGRESS: Errno : 36 /* Operation now in progress */ EALREADY: Errno : 37 /* Operation already in progress */ /* ipc/network software -- argument errors */ ENOTSOCK: Errno : 38 /* Socket operation on non-socket */ EDESTADDRREQ: Errno : 39 /* Destination address required */ EMSGSIZE: Errno : 40 /* Message too long */ EPROTOTYPE: Errno : 41 /* Protocol wrong type for socket */ ENOPROTOOPT: Errno : 42 /* Protocol option not available */ EPROTONOSUPPORT: Errno : 43 /* Protocol not supported */ ESOCKTNOSUPPORT: Errno : 44 /* Socket type not supported */ EOPNOTSUPP: Errno : 45 /* Operation not supported */ EPFNOSUPPORT: Errno : 46 /* Protocol family not supported */ EAFNOSUPPORT: Errno : 47 /* Address family not supported by protocol family */ EADDRINUSE: Errno : 48 /* Address already in use */ EADDRNOTAVAIL: Errno : 49 /* Can't assign requested address */ /* ipc/network software -- operational errors */ ENETDOWN: Errno : 50 /* Network is down */ ENETUNREACH: Errno : 51 /* Network is unreachable */ ENETRESET: Errno : 52 /* Network dropped connection on reset */ ECONNABORTED: Errno : 53 /* Software caused connection abort */ ECONNRESET: Errno : 54 /* Connection reset by peer */ ENOBUFS: Errno : 55 /* No buffer space available */ EISCONN: Errno : 56 /* Socket is already connected */ ENOTCONN: Errno : 57 /* Socket is not connected */ ESHUTDOWN: Errno : 58 /* Can't send after socket shutdown */ ETOOMANYREFS: Errno : 59 /* Too many references: can't splice */ ETIMEDOUT: Errno : 60 /* Operation timed out */ ECONNREFUSED: Errno : 61 /* Connection refused */ ELOOP: Errno : 62 /* Too many levels of symbolic links */ ENAMETOOLONG: Errno : 63 /* File name too long */ /* should be rearranged */ EHOSTDOWN: Errno : 64 /* Host is down */ EHOSTUNREACH: Errno : 65 /* No route to host */ ENOTEMPTY: Errno : 66 /* Directory not empty */ /* quotas & mush */ EPROCLIM: Errno : 67 /* Too many processes */ EUSERS: Errno : 68 /* Too many users */ EDQUOT: Errno : 69 /* Disc quota exceeded */ /* Network File System */ ESTALE: Errno : 70 /* Stale NFS file handle */ EREMOTE: Errno : 71 /* Too many levels of remote in path */ EBADRPC: Errno : 72 /* RPC struct is bad */ ERPCMISMATCH: Errno : 73 /* RPC version wrong */ EPROGUNAVAIL: Errno : 74 /* RPC prog. not avail */ EPROGMISMATCH: Errno : 75 /* Program version wrong */ EPROCUNAVAIL: Errno : 76 /* Bad procedure for program */ ENOLCK: Errno : 77 /* No locks available */ ENOSYS: Errno : 78 /* Function not implemented */ EFTYPE: Errno : 79 /* Inappropriate file type or format */ EAUTH: Errno : 80 /* Authentication error */ ENEEDAUTH: Errno : 81 /* Need authenticator */ /* SystemV IPC */ EIDRM: Errno : 82 /* Identifier removed */ ENOMSG: Errno : 83 /* No message of desired type */ EOVERFLOW: Errno : 84 /* Value too large to be stored in data type */ /* Wide/multibyte-character handling, ISO/IEC 9899/AMD1:1995 */ EILSEQ: Errno : 85 /* Illegal byte sequence */ /* From IEEE Std 1003.1-2001 */ /* Base, Realtime, Threads or Thread Priority Scheduling option errors */ ENOTSUP: Errno : 86 /* Not supported */ /* Realtime option errors */ ECANCELED: Errno : 87 /* Operation canceled */ /* Realtime, XSI STREAMS option errors */ EBADMSG: Errno : 88 /* Bad or Corrupt message */ /* XSI STREAMS option errors */ ENODATA: Errno : 89 /* No message available */ ENOSR: Errno : 90 /* No STREAM resources */ ENOSTR: Errno : 91 /* Not a STREAM */ ETIME: Errno : 92 /* STREAM ioctl timeout */ /* File system extended attribute errors */ ENOATTR: Errno : 93 /* Attribute not found */ /* Realtime, XSI STREAMS option errors */ EMULTIHOP: Errno : 94 /* Multihop attempted */ ENOLINK: Errno : 95 /* Link has been severed */ EPROTO: Errno : 96 /* Protocol error */ /* Robust mutexes */ EOWNERDEAD: Errno : 97 /* Previous owner died */ ENOTRECOVERABLE: Errno : 98 /* State not recoverable */ ELAST: Errno : 98 /* Must equal largest errno */ /* end of errno */ O_RDONLY :: 0x000000000 O_WRONLY :: 0x000000001 O_RDWR :: 0x000000002 O_CREATE :: 0x000000200 O_EXCL :: 0x000000800 O_NOCTTY :: 0x000008000 O_TRUNC :: 0x000000400 O_NONBLOCK :: 0x000000004 O_APPEND :: 0x000000008 O_SYNC :: 0x000000080 O_ASYNC :: 0x000000040 O_CLOEXEC :: 0x000400000 RTLD_LAZY :: 0x001 RTLD_NOW :: 0x002 RTLD_GLOBAL :: 0x100 RTLD_LOCAL :: 0x200 RTLD_TRACE :: 0x200 RTLD_NODELETE :: 0x01000 RTLD_NOLOAD :: 0x02000 F_GETPATH :: 15 MAX_PATH :: 1024 MAXNAMLEN :: 511 args := _alloc_command_line_arguments() Unix_File_Time :: struct { seconds: time_t, nanoseconds: c.long, } dev_t :: u64 ino_t :: u64 nlink_t :: u32 off_t :: i64 mode_t :: u16 pid_t :: u32 uid_t :: u32 gid_t :: u32 blkcnt_t :: i64 blksize_t :: i32 fflags_t :: u32 time_t :: i64 OS_Stat :: struct { device_id: dev_t, mode: mode_t, _padding0: i16, ino: ino_t, nlink: nlink_t, uid: uid_t, gid: gid_t, _padding1: i32, rdev: dev_t, last_access: Unix_File_Time, modified: Unix_File_Time, status_change: Unix_File_Time, birthtime: Unix_File_Time, size: off_t, blocks: blkcnt_t, block_size: blksize_t, flags: fflags_t, gen: u32, lspare: [2]u32, } Dirent :: struct { ino: ino_t, reclen: u16, namlen: u16, type: u8, name: [MAXNAMLEN + 1]byte, } Dir :: distinct rawptr // DIR* // File type S_IFMT :: 0o170000 // Type of file mask S_IFIFO :: 0o010000 // Named pipe (fifo) S_IFCHR :: 0o020000 // Character special S_IFDIR :: 0o040000 // Directory S_IFBLK :: 0o060000 // Block special S_IFREG :: 0o100000 // Regular S_IFLNK :: 0o120000 // Symbolic link S_IFSOCK :: 0o140000 // Socket // File mode // Read, write, execute/search by owner S_IRWXU :: 0o0700 // RWX mask for owner S_IRUSR :: 0o0400 // R for owner S_IWUSR :: 0o0200 // W for owner S_IXUSR :: 0o0100 // X for owner // Read, write, execute/search by group S_IRWXG :: 0o0070 // RWX mask for group S_IRGRP :: 0o0040 // R for group S_IWGRP :: 0o0020 // W for group S_IXGRP :: 0o0010 // X for group // Read, write, execute/search by others S_IRWXO :: 0o0007 // RWX mask for other S_IROTH :: 0o0004 // R for other S_IWOTH :: 0o0002 // W for other S_IXOTH :: 0o0001 // X for other S_ISUID :: 0o4000 // Set user id on execution S_ISGID :: 0o2000 // Set group id on execution S_ISVTX :: 0o1000 // Directory restrcted delete S_ISLNK :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFLNK } S_ISREG :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFREG } S_ISDIR :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFDIR } S_ISCHR :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFCHR } S_ISBLK :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFBLK } S_ISFIFO :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFIFO } S_ISSOCK :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFSOCK } F_OK :: 0 // Test for file existance X_OK :: 1 // Test for execute permission W_OK :: 2 // Test for write permission R_OK :: 4 // Test for read permission foreign libc { @(link_name="__errno") __errno_location :: proc() -> ^c.int --- @(link_name="open") _unix_open :: proc(path: cstring, flags: c.int, mode: c.int) -> Handle --- @(link_name="close") _unix_close :: proc(fd: Handle) -> c.int --- @(link_name="read") _unix_read :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t --- @(link_name="write") _unix_write :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t --- @(link_name="lseek") _unix_seek :: proc(fd: Handle, offset: i64, whence: c.int) -> i64 --- @(link_name="getpagesize") _unix_getpagesize :: proc() -> c.int --- @(link_name="stat") _unix_stat :: proc(path: cstring, stat: ^OS_Stat) -> c.int --- @(link_name="__lstat50") _unix_lstat :: proc(path: cstring, sb: ^OS_Stat) -> c.int --- @(link_name="__fstat50") _unix_fstat :: proc(fd: Handle, stat: ^OS_Stat) -> c.int --- @(link_name="readlink") _unix_readlink :: proc(path: cstring, buf: ^byte, bufsiz: c.size_t) -> c.ssize_t --- @(link_name="access") _unix_access :: proc(path: cstring, mask: c.int) -> c.int --- @(link_name="getcwd") _unix_getcwd :: proc(buf: cstring, len: c.size_t) -> cstring --- @(link_name="chdir") _unix_chdir :: proc(buf: cstring) -> c.int --- @(link_name="rename") _unix_rename :: proc(old, new: cstring) -> c.int --- @(link_name="unlink") _unix_unlink :: proc(path: cstring) -> c.int --- @(link_name="rmdir") _unix_rmdir :: proc(path: cstring) -> c.int --- @(link_name="mkdir") _unix_mkdir :: proc(path: cstring, mode: mode_t) -> c.int --- @(link_name="fcntl") _unix_fcntl :: proc(fd: Handle, cmd: c.int, arg: uintptr) -> c.int --- @(link_name="fdopendir") _unix_fdopendir :: proc(fd: Handle) -> Dir --- @(link_name="closedir") _unix_closedir :: proc(dirp: Dir) -> c.int --- @(link_name="rewinddir") _unix_rewinddir :: proc(dirp: Dir) --- @(link_name="readdir_r") _unix_readdir_r :: proc(dirp: Dir, entry: ^Dirent, result: ^^Dirent) -> c.int --- @(link_name="malloc") _unix_malloc :: proc(size: c.size_t) -> rawptr --- @(link_name="calloc") _unix_calloc :: proc(num, size: c.size_t) -> rawptr --- @(link_name="free") _unix_free :: proc(ptr: rawptr) --- @(link_name="realloc") _unix_realloc :: proc(ptr: rawptr, size: c.size_t) -> rawptr --- @(link_name="getenv") _unix_getenv :: proc(cstring) -> cstring --- @(link_name="realpath") _unix_realpath :: proc(path: cstring, resolved_path: rawptr) -> rawptr --- @(link_name="sysctlbyname") _sysctlbyname :: proc(path: cstring, oldp: rawptr, oldlenp: rawptr, newp: rawptr, newlen: int) -> c.int --- @(link_name="exit") _unix_exit :: proc(status: c.int) -> ! --- } foreign dl { @(link_name="dlopen") _unix_dlopen :: proc(filename: cstring, flags: c.int) -> rawptr --- @(link_name="dlsym") _unix_dlsym :: proc(handle: rawptr, symbol: cstring) -> rawptr --- @(link_name="dlclose") _unix_dlclose :: proc(handle: rawptr) -> c.int --- @(link_name="dlerror") _unix_dlerror :: proc() -> cstring --- } @(private) foreign libc { _lwp_self :: proc() -> i32 --- } // NOTE(phix): Perhaps share the following functions with FreeBSD if they turn out to be the same in the end. is_path_separator :: proc(r: rune) -> bool { return r == '/' } get_last_error :: proc "contextless" () -> int { return int(__errno_location()^) } open :: proc(path: string, flags: int = O_RDONLY, mode: int = 0) -> (Handle, Errno) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) handle := _unix_open(cstr, c.int(flags), c.int(mode)) if handle == -1 { return INVALID_HANDLE, Errno(get_last_error()) } return handle, ERROR_NONE } close :: proc(fd: Handle) -> Errno { result := _unix_close(fd) if result == -1 { return Errno(get_last_error()) } return ERROR_NONE } // We set a max of 1GB to keep alignment and to be safe. @(private) MAX_RW :: 1 << 30 read :: proc(fd: Handle, data: []byte) -> (int, Errno) { to_read := min(c.size_t(len(data)), MAX_RW) bytes_read := _unix_read(fd, &data[0], to_read) if bytes_read == -1 { return -1, Errno(get_last_error()) } return int(bytes_read), ERROR_NONE } write :: proc(fd: Handle, data: []byte) -> (int, Errno) { if len(data) == 0 { return 0, ERROR_NONE } to_write := min(c.size_t(len(data)), MAX_RW) bytes_written := _unix_write(fd, &data[0], to_write) if bytes_written == -1 { return -1, Errno(get_last_error()) } return int(bytes_written), ERROR_NONE } seek :: proc(fd: Handle, offset: i64, whence: int) -> (i64, Errno) { res := _unix_seek(fd, offset, c.int(whence)) if res == -1 { return -1, Errno(get_last_error()) } return res, ERROR_NONE } file_size :: proc(fd: Handle) -> (i64, Errno) { s, err := _fstat(fd) if err != ERROR_NONE { return -1, err } return s.size, ERROR_NONE } rename :: proc(old_path, new_path: string) -> Errno { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() old_path_cstr := strings.clone_to_cstring(old_path, context.temp_allocator) new_path_cstr := strings.clone_to_cstring(new_path, context.temp_allocator) res := _unix_rename(old_path_cstr, new_path_cstr) if res == -1 { return Errno(get_last_error()) } return ERROR_NONE } remove :: proc(path: string) -> Errno { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() path_cstr := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_unlink(path_cstr) if res == -1 { return Errno(get_last_error()) } return ERROR_NONE } make_directory :: proc(path: string, mode: mode_t = 0o775) -> Errno { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() path_cstr := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_mkdir(path_cstr, mode) if res == -1 { return Errno(get_last_error()) } return ERROR_NONE } remove_directory :: proc(path: string) -> Errno { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() path_cstr := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_rmdir(path_cstr) if res == -1 { return Errno(get_last_error()) } return ERROR_NONE } is_file_handle :: proc(fd: Handle) -> bool { s, err := _fstat(fd) if err != ERROR_NONE { return false } return S_ISREG(s.mode) } is_file_path :: proc(path: string, follow_links: bool = true) -> bool { s: OS_Stat err: Errno if follow_links { s, err = _stat(path) } else { s, err = _lstat(path) } if err != ERROR_NONE { return false } return S_ISREG(s.mode) } is_dir_handle :: proc(fd: Handle) -> bool { s, err := _fstat(fd) if err != ERROR_NONE { return false } return S_ISDIR(s.mode) } is_dir_path :: proc(path: string, follow_links: bool = true) -> bool { s: OS_Stat err: Errno if follow_links { s, err = _stat(path) } else { s, err = _lstat(path) } if err != ERROR_NONE { return false } return S_ISDIR(s.mode) } is_file :: proc {is_file_path, is_file_handle} is_dir :: proc {is_dir_path, is_dir_handle} exists :: proc(path: string) -> bool { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cpath := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_access(cpath, O_RDONLY) return res == 0 } fcntl :: proc(fd: int, cmd: int, arg: int) -> (int, Errno) { result := _unix_fcntl(Handle(fd), c.int(cmd), uintptr(arg)) if result < 0 { return 0, Errno(get_last_error()) } return int(result), ERROR_NONE } // NOTE(bill): Uses startup to initialize it stdin: Handle = 0 stdout: Handle = 1 stderr: Handle = 2 last_write_time :: proc(fd: Handle) -> (File_Time, Errno) { s, err := _fstat(fd) if err != ERROR_NONE { return 0, err } modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds return File_Time(modified), ERROR_NONE } last_write_time_by_name :: proc(name: string) -> (File_Time, Errno) { s, err := _stat(name) if err != ERROR_NONE { return 0, err } modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds return File_Time(modified), ERROR_NONE } @private _stat :: proc(path: string) -> (OS_Stat, Errno) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) s: OS_Stat = --- result := _unix_lstat(cstr, &s) if result == -1 { return s, Errno(get_last_error()) } return s, ERROR_NONE } @private _lstat :: proc(path: string) -> (OS_Stat, Errno) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) // deliberately uninitialized s: OS_Stat = --- res := _unix_lstat(cstr, &s) if res == -1 { return s, Errno(get_last_error()) } return s, ERROR_NONE } @private _fstat :: proc(fd: Handle) -> (OS_Stat, Errno) { s: OS_Stat = --- result := _unix_fstat(fd, &s) if result == -1 { return s, Errno(get_last_error()) } return s, ERROR_NONE } @private _fdopendir :: proc(fd: Handle) -> (Dir, Errno) { dirp := _unix_fdopendir(fd) if dirp == cast(Dir)nil { return nil, Errno(get_last_error()) } return dirp, ERROR_NONE } @private _closedir :: proc(dirp: Dir) -> Errno { rc := _unix_closedir(dirp) if rc != 0 { return Errno(get_last_error()) } return ERROR_NONE } @private _rewinddir :: proc(dirp: Dir) { _unix_rewinddir(dirp) } @private _readdir :: proc(dirp: Dir) -> (entry: Dirent, err: Errno, end_of_stream: bool) { result: ^Dirent rc := _unix_readdir_r(dirp, &entry, &result) if rc != 0 { err = Errno(get_last_error()) return } err = ERROR_NONE if result == nil { end_of_stream = true return } return } @private _readlink :: proc(path: string) -> (string, Errno) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = context.temp_allocator == context.allocator) path_cstr := strings.clone_to_cstring(path, context.temp_allocator) bufsz : uint = MAX_PATH buf := make([]byte, MAX_PATH) for { rc := _unix_readlink(path_cstr, &(buf[0]), bufsz) if rc == -1 { delete(buf) return "", Errno(get_last_error()) } else if rc == int(bufsz) { bufsz += MAX_PATH delete(buf) buf = make([]byte, bufsz) } else { return strings.string_from_ptr(&buf[0], rc), ERROR_NONE } } return "", Errno{} } absolute_path_from_handle :: proc(fd: Handle) -> (string, Errno) { buf: [MAX_PATH]byte _, err := fcntl(int(fd), F_GETPATH, int(uintptr(&buf[0]))) if err != ERROR_NONE { return "", err } path := strings.clone_from_cstring(cstring(&buf[0])) return path, err } absolute_path_from_relative :: proc(rel: string) -> (path: string, err: Errno) { rel := rel if rel == "" { rel = "." } runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = context.temp_allocator == context.allocator) rel_cstr := strings.clone_to_cstring(rel, context.temp_allocator) path_ptr := _unix_realpath(rel_cstr, nil) if path_ptr == nil { return "", Errno(get_last_error()) } defer _unix_free(path_ptr) path = strings.clone(string(cstring(path_ptr))) return path, ERROR_NONE } access :: proc(path: string, mask: int) -> (bool, Errno) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) result := _unix_access(cstr, c.int(mask)) if result == -1 { return false, Errno(get_last_error()) } return true, ERROR_NONE } lookup_env :: proc(key: string, allocator := context.allocator) -> (value: string, found: bool) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = context.temp_allocator == allocator) path_str := strings.clone_to_cstring(key, context.temp_allocator) cstr := _unix_getenv(path_str) if cstr == nil { return "", false } return strings.clone(string(cstr), allocator), true } get_env :: proc(key: string, allocator := context.allocator) -> (value: string) { value, _ = lookup_env(key, allocator) return } get_current_directory :: proc() -> string { // NOTE(tetra): I would use PATH_MAX here, but I was not able to find // an authoritative value for it across all systems. // The largest value I could find was 4096, so might as well use the page size. page_size := get_page_size() buf := make([dynamic]u8, page_size) #no_bounds_check for { cwd := _unix_getcwd(cstring(&buf[0]), c.size_t(len(buf))) if cwd != nil { return string(cwd) } if Errno(get_last_error()) != ERANGE { delete(buf) return "" } resize(&buf, len(buf)+page_size) } unreachable() } set_current_directory :: proc(path: string) -> (err: Errno) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_chdir(cstr) if res == -1 { return Errno(get_last_error()) } return ERROR_NONE } exit :: proc "contextless" (code: int) -> ! { runtime._cleanup_runtime_contextless() _unix_exit(c.int(code)) } current_thread_id :: proc "contextless" () -> int { return int(_lwp_self()) } dlopen :: proc(filename: string, flags: int) -> rawptr { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(filename, context.temp_allocator) handle := _unix_dlopen(cstr, c.int(flags)) return handle } dlsym :: proc(handle: rawptr, symbol: string) -> rawptr { assert(handle != nil) runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(symbol, context.temp_allocator) proc_handle := _unix_dlsym(handle, cstr) return proc_handle } dlclose :: proc(handle: rawptr) -> bool { assert(handle != nil) return _unix_dlclose(handle) == 0 } dlerror :: proc() -> string { return string(_unix_dlerror()) } get_page_size :: proc() -> int { // NOTE(tetra): The page size never changes, so why do anything complicated // if we don't have to. @static page_size := -1 if page_size != -1 { return page_size } page_size = int(_unix_getpagesize()) return page_size } @(private) _processor_core_count :: proc() -> int { count : int = 0 count_size := size_of(count) if _sysctlbyname("hw.logicalcpu", &count, &count_size, nil, 0) == 0 { if count > 0 { return count } } return 1 } _alloc_command_line_arguments :: proc() -> []string { res := make([]string, len(runtime.args__)) for arg, i in runtime.args__ { res[i] = string(arg) } return res }