package os foreign import libc "system:c" import "core:strings" import "core:c" import "base:runtime" Handle :: distinct i32 Pid :: distinct i32 File_Time :: distinct u64 INVALID_HANDLE :: ~Handle(0) _Platform_Error :: enum i32 { NONE = 0, EPERM = 1, ENOENT = 2, ESRCH = 3, EINTR = 4, EIO = 5, ENXIO = 6, E2BIG = 7, ENOEXEC = 8, EBADF = 9, ECHILD = 10, EDEADLK = 11, ENOMEM = 12, EACCES = 13, EFAULT = 14, ENOTBLK = 15, EBUSY = 16, EEXIST = 17, EXDEV = 18, ENODEV = 19, ENOTDIR = 20, EISDIR = 21, EINVAL = 22, ENFILE = 23, EMFILE = 24, ENOTTY = 25, ETXTBSY = 26, EFBIG = 27, ENOSPC = 28, ESPIPE = 29, EROFS = 30, EMLINK = 31, EPIPE = 32, EDOM = 33, ERANGE = 34, EAGAIN = 35, EWOULDBLOCK = EAGAIN, EINPROGRESS = 36, EALREADY = 37, ENOTSOCK = 38, EDESTADDRREQ = 39, EMSGSIZE = 40, EPROTOTYPE = 41, ENOPROTOOPT = 42, EPROTONOSUPPORT = 43, ESOCKTNOSUPPORT = 44, EOPNOTSUPP = 45, EPFNOSUPPORT = 46, EAFNOSUPPORT = 47, EADDRINUSE = 48, EADDRNOTAVAIL = 49, ENETDOWN = 50, ENETUNREACH = 51, ENETRESET = 52, ECONNABORTED = 53, ECONNRESET = 54, ENOBUFS = 55, EISCONN = 56, ENOTCONN = 57, ESHUTDOWN = 58, ETOOMANYREFS = 59, ETIMEDOUT = 60, ECONNREFUSED = 61, ELOOP = 62, ENAMETOOLONG = 63, EHOSTDOWN = 64, EHOSTUNREACH = 65, ENOTEMPTY = 66, EPROCLIM = 67, EUSERS = 68, EDQUOT = 69, ESTALE = 70, EREMOTE = 71, EBADRPC = 72, ERPCMISMATCH = 73, EPROGUNAVAIL = 74, EPROGMISMATCH = 75, EPROCUNAVAIL = 76, ENOLCK = 77, ENOSYS = 78, EFTYPE = 79, EAUTH = 80, ENEEDAUTH = 81, EIPSEC = 82, ENOATTR = 83, EILSEQ = 84, ENOMEDIUM = 85, EMEDIUMTYPE = 86, EOVERFLOW = 87, ECANCELED = 88, EIDRM = 89, ENOMSG = 90, ENOTSUP = 91, EBADMSG = 92, ENOTRECOVERABLE = 93, EOWNERDEAD = 94, EPROTO = 95, } EPERM :: Platform_Error.EPERM ENOENT :: Platform_Error.ENOENT ESRCH :: Platform_Error.ESRCH EINTR :: Platform_Error.EINTR EIO :: Platform_Error.EIO ENXIO :: Platform_Error.ENXIO E2BIG :: Platform_Error.E2BIG ENOEXEC :: Platform_Error.ENOEXEC EBADF :: Platform_Error.EBADF ECHILD :: Platform_Error.ECHILD EDEADLK :: Platform_Error.EDEADLK ENOMEM :: Platform_Error.ENOMEM EACCES :: Platform_Error.EACCES EFAULT :: Platform_Error.EFAULT ENOTBLK :: Platform_Error.ENOTBLK EBUSY :: Platform_Error.EBUSY EEXIST :: Platform_Error.EEXIST EXDEV :: Platform_Error.EXDEV ENODEV :: Platform_Error.ENODEV ENOTDIR :: Platform_Error.ENOTDIR EISDIR :: Platform_Error.EISDIR EINVAL :: Platform_Error.EINVAL ENFILE :: Platform_Error.ENFILE EMFILE :: Platform_Error.EMFILE ENOTTY :: Platform_Error.ENOTTY ETXTBSY :: Platform_Error.ETXTBSY EFBIG :: Platform_Error.EFBIG ENOSPC :: Platform_Error.ENOSPC ESPIPE :: Platform_Error.ESPIPE EROFS :: Platform_Error.EROFS EMLINK :: Platform_Error.EMLINK EPIPE :: Platform_Error.EPIPE EDOM :: Platform_Error.EDOM ERANGE :: Platform_Error.ERANGE EAGAIN :: Platform_Error.EAGAIN EWOULDBLOCK :: Platform_Error.EWOULDBLOCK EINPROGRESS :: Platform_Error.EINPROGRESS EALREADY :: Platform_Error.EALREADY ENOTSOCK :: Platform_Error.ENOTSOCK EDESTADDRREQ :: Platform_Error.EDESTADDRREQ EMSGSIZE :: Platform_Error.EMSGSIZE EPROTOTYPE :: Platform_Error.EPROTOTYPE ENOPROTOOPT :: Platform_Error.ENOPROTOOPT EPROTONOSUPPORT :: Platform_Error.EPROTONOSUPPORT ESOCKTNOSUPPORT :: Platform_Error.ESOCKTNOSUPPORT EOPNOTSUPP :: Platform_Error.EOPNOTSUPP EPFNOSUPPORT :: Platform_Error.EPFNOSUPPORT EAFNOSUPPORT :: Platform_Error.EAFNOSUPPORT EADDRINUSE :: Platform_Error.EADDRINUSE EADDRNOTAVAIL :: Platform_Error.EADDRNOTAVAIL ENETDOWN :: Platform_Error.ENETDOWN ENETUNREACH :: Platform_Error.ENETUNREACH ENETRESET :: Platform_Error.ENETRESET ECONNABORTED :: Platform_Error.ECONNABORTED ECONNRESET :: Platform_Error.ECONNRESET ENOBUFS :: Platform_Error.ENOBUFS EISCONN :: Platform_Error.EISCONN ENOTCONN :: Platform_Error.ENOTCONN ESHUTDOWN :: Platform_Error.ESHUTDOWN ETOOMANYREFS :: Platform_Error.ETOOMANYREFS ETIMEDOUT :: Platform_Error.ETIMEDOUT ECONNREFUSED :: Platform_Error.ECONNREFUSED ELOOP :: Platform_Error.ELOOP ENAMETOOLONG :: Platform_Error.ENAMETOOLONG EHOSTDOWN :: Platform_Error.EHOSTDOWN EHOSTUNREACH :: Platform_Error.EHOSTUNREACH ENOTEMPTY :: Platform_Error.ENOTEMPTY EPROCLIM :: Platform_Error.EPROCLIM EUSERS :: Platform_Error.EUSERS EDQUOT :: Platform_Error.EDQUOT ESTALE :: Platform_Error.ESTALE EREMOTE :: Platform_Error.EREMOTE EBADRPC :: Platform_Error.EBADRPC ERPCMISMATCH :: Platform_Error.ERPCMISMATCH EPROGUNAVAIL :: Platform_Error.EPROGUNAVAIL EPROGMISMATCH :: Platform_Error.EPROGMISMATCH EPROCUNAVAIL :: Platform_Error.EPROCUNAVAIL ENOLCK :: Platform_Error.ENOLCK ENOSYS :: Platform_Error.ENOSYS EFTYPE :: Platform_Error.EFTYPE EAUTH :: Platform_Error.EAUTH ENEEDAUTH :: Platform_Error.ENEEDAUTH EIPSEC :: Platform_Error.EIPSEC ENOATTR :: Platform_Error.ENOATTR EILSEQ :: Platform_Error.EILSEQ ENOMEDIUM :: Platform_Error.ENOMEDIUM EMEDIUMTYPE :: Platform_Error.EMEDIUMTYPE EOVERFLOW :: Platform_Error.EOVERFLOW ECANCELED :: Platform_Error.ECANCELED EIDRM :: Platform_Error.EIDRM ENOMSG :: Platform_Error.ENOMSG ENOTSUP :: Platform_Error.ENOTSUP EBADMSG :: Platform_Error.EBADMSG ENOTRECOVERABLE :: Platform_Error.ENOTRECOVERABLE EOWNERDEAD :: Platform_Error.EOWNERDEAD EPROTO :: Platform_Error.EPROTO O_RDONLY :: 0x00000 O_WRONLY :: 0x00001 O_RDWR :: 0x00002 O_NONBLOCK :: 0x00004 O_APPEND :: 0x00008 O_ASYNC :: 0x00040 O_SYNC :: 0x00080 O_CREATE :: 0x00200 O_TRUNC :: 0x00400 O_EXCL :: 0x00800 O_NOCTTY :: 0x08000 O_CLOEXEC :: 0x10000 RTLD_LAZY :: 0x001 RTLD_NOW :: 0x002 RTLD_LOCAL :: 0x000 RTLD_GLOBAL :: 0x100 RTLD_TRACE :: 0x200 RTLD_NODELETE :: 0x400 MAX_PATH :: 1024 // "Argv" arguments converted to Odin strings args := _alloc_command_line_arguments() pid_t :: i32 time_t :: i64 mode_t :: u32 dev_t :: i32 ino_t :: u64 nlink_t :: u32 uid_t :: u32 gid_t :: u32 off_t :: i64 blkcnt_t :: u64 blksize_t :: i32 Unix_File_Time :: struct { seconds: time_t, nanoseconds: c.long, } OS_Stat :: struct { mode: mode_t, // inode protection mode device_id: dev_t, // inode's device serial: ino_t, // inode's number nlink: nlink_t, // number of hard links uid: uid_t, // user ID of the file's owner gid: gid_t, // group ID of the file's group rdev: dev_t, // device type last_access: Unix_File_Time, // time of last access modified: Unix_File_Time, // time of last data modification status_change: Unix_File_Time, // time of last file status change size: off_t, // file size, in bytes blocks: blkcnt_t, // blocks allocated for file block_size: blksize_t, // optimal blocksize for I/O flags: u32, // user defined flags for file gen: u32, // file generation number birthtime: Unix_File_Time, // time of file creation } MAXNAMLEN :: 255 // NOTE(laleksic, 2021-01-21): Comment and rename these to match OS_Stat above Dirent :: struct { ino: ino_t, // file number of entry off: off_t, // offset after this entry reclen: u16, // length of this record type: u8, // file type namlen: u8, // length of string in name _padding: [4]u8, name: [MAXNAMLEN + 1]byte, // name } 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 S_ISVTX :: 0o001000 // Save swapped text even after use // 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_ISTXT :: 0o1000 // Sticky bit @(require_results) S_ISLNK :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFLNK } @(require_results) S_ISREG :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFREG } @(require_results) S_ISDIR :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFDIR } @(require_results) S_ISCHR :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFCHR } @(require_results) S_ISBLK :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFBLK } @(require_results) S_ISFIFO :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFIFO } @(require_results) S_ISSOCK :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFSOCK } F_OK :: 0x00 // Test for file existance X_OK :: 0x01 // Test for execute permission W_OK :: 0x02 // Test for write permission R_OK :: 0x04 // Test for read permission AT_FDCWD :: -100 AT_EACCESS :: 0x01 AT_SYMLINK_NOFOLLOW :: 0x02 AT_SYMLINK_FOLLOW :: 0x04 AT_REMOVEDIR :: 0x08 @(default_calling_convention="c") foreign libc { @(link_name="__error") __error :: proc() -> ^c.int --- @(link_name="fork") _unix_fork :: proc() -> pid_t --- @(link_name="getthrid") _unix_getthrid :: proc() -> int --- @(link_name="open") _unix_open :: proc(path: cstring, flags: c.int, #c_vararg mode: ..u32) -> 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="pread") _unix_pread :: proc(fd: Handle, buf: rawptr, size: c.size_t, offset: i64) -> c.ssize_t --- @(link_name="write") _unix_write :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t --- @(link_name="pwrite") _unix_pwrite :: proc(fd: Handle, buf: rawptr, size: c.size_t, offset: i64) -> c.ssize_t --- @(link_name="lseek") _unix_seek :: proc(fd: Handle, offset: off_t, whence: c.int) -> off_t --- @(link_name="stat") _unix_stat :: proc(path: cstring, sb: ^OS_Stat) -> c.int --- @(link_name="fstat") _unix_fstat :: proc(fd: Handle, sb: ^OS_Stat) -> c.int --- @(link_name="lstat") _unix_lstat :: proc(path: cstring, sb: ^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(path: 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="fsync") _unix_fsync :: proc(fd: Handle) -> c.int --- @(link_name="dup") _unix_dup :: proc(fd: Handle) -> Handle --- @(link_name="getpagesize") _unix_getpagesize :: proc() -> c.int --- @(link_name="sysconf") _sysconf :: proc(name: c.int) -> c.long --- @(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: [^]byte = nil) -> cstring --- @(link_name="exit") _unix_exit :: proc(status: c.int) -> ! --- @(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 --- } @(require_results) is_path_separator :: proc(r: rune) -> bool { return r == '/' } @(require_results, no_instrumentation) get_last_error :: proc "contextless" () -> Error { return Platform_Error(__error()^) } @(require_results) fork :: proc() -> (Pid, Error) { pid := _unix_fork() if pid == -1 { return Pid(-1), get_last_error() } return Pid(pid), nil } @(require_results) open :: proc(path: string, flags: int = O_RDONLY, mode: int = 0) -> (Handle, Error) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) handle := _unix_open(cstr, c.int(flags), c.uint(mode)) if handle == -1 { return INVALID_HANDLE, get_last_error() } return handle, nil } close :: proc(fd: Handle) -> Error { result := _unix_close(fd) if result == -1 { return get_last_error() } return nil } flush :: proc(fd: Handle) -> Error { result := _unix_fsync(fd) if result == -1 { return get_last_error() } return nil } // If you read or write more than `SSIZE_MAX` bytes, OpenBSD returns `EINVAL`. // In practice a read/write call would probably never read/write these big buffers all at once, // which is why the number of bytes is returned and why there are procs that will call this in a // loop for you. // 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, Error) { 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, get_last_error() } return int(bytes_read), nil } write :: proc(fd: Handle, data: []byte) -> (int, Error) { if len(data) == 0 { return 0, nil } 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, get_last_error() } return int(bytes_written), nil } read_at :: proc(fd: Handle, data: []byte, offset: i64) -> (n: int, err: Error) { if len(data) == 0 { return 0, nil } to_read := min(uint(len(data)), MAX_RW) bytes_read := _unix_pread(fd, raw_data(data), to_read, offset) if bytes_read < 0 { return -1, get_last_error() } return bytes_read, nil } write_at :: proc(fd: Handle, data: []byte, offset: i64) -> (n: int, err: Error) { if len(data) == 0 { return 0, nil } to_write := min(uint(len(data)), MAX_RW) bytes_written := _unix_pwrite(fd, raw_data(data), to_write, offset) if bytes_written < 0 { return -1, get_last_error() } return bytes_written, nil } seek :: proc(fd: Handle, offset: i64, whence: int) -> (i64, Error) { switch whence { case SEEK_SET, SEEK_CUR, SEEK_END: break case: return 0, .Invalid_Whence } res := _unix_seek(fd, offset, c.int(whence)) if res == -1 { errno := get_last_error() switch errno { case .EINVAL: return 0, .Invalid_Offset } return 0, errno } return res, nil } @(require_results) file_size :: proc(fd: Handle) -> (size: i64, err: Error) { size = -1 s := _fstat(fd) or_return size = s.size return } rename :: proc(old_path, new_path: string) -> Error { 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 get_last_error() } return nil } remove :: proc(path: string) -> Error { 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 get_last_error() } return nil } make_directory :: proc(path: string, mode: mode_t = 0o775) -> Error { 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 get_last_error() } return nil } remove_directory :: proc(path: string) -> Error { 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 get_last_error() } return nil } @(require_results) is_file_handle :: proc(fd: Handle) -> bool { s, err := _fstat(fd) if err != nil { return false } return S_ISREG(s.mode) } @(require_results) is_file_path :: proc(path: string, follow_links: bool = true) -> bool { s: OS_Stat err: Error if follow_links { s, err = _stat(path) } else { s, err = _lstat(path) } if err != nil { return false } return S_ISREG(s.mode) } @(require_results) is_dir_handle :: proc(fd: Handle) -> bool { s, err := _fstat(fd) if err != nil { return false } return S_ISDIR(s.mode) } @(require_results) is_dir_path :: proc(path: string, follow_links: bool = true) -> bool { s: OS_Stat err: Error if follow_links { s, err = _stat(path) } else { s, err = _lstat(path) } if err != nil { 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} // NOTE(bill): Uses startup to initialize it stdin: Handle = 0 stdout: Handle = 1 stderr: Handle = 2 /* TODO(zangent): Implement these! last_write_time :: proc(fd: Handle) -> File_Time {} last_write_time_by_name :: proc(name: string) -> File_Time {} */ @(require_results) last_write_time :: proc(fd: Handle) -> (time: File_Time, err: Error) { s := _fstat(fd) or_return modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds return File_Time(modified), nil } @(require_results) last_write_time_by_name :: proc(name: string) -> (time: File_Time, err: Error) { s := _stat(name) or_return modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds return File_Time(modified), nil } @(private, require_results) _stat :: proc(path: string) -> (OS_Stat, Error) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) // deliberately uninitialized s: OS_Stat = --- res := _unix_stat(cstr, &s) if res == -1 { return s, get_last_error() } return s, nil } @(private, require_results) _lstat :: proc(path: string) -> (OS_Stat, Error) { 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, get_last_error() } return s, nil } @(private, require_results) _fstat :: proc(fd: Handle) -> (OS_Stat, Error) { // deliberately uninitialized s: OS_Stat = --- res := _unix_fstat(fd, &s) if res == -1 { return s, get_last_error() } return s, nil } @(private, require_results) _fdopendir :: proc(fd: Handle) -> (Dir, Error) { dirp := _unix_fdopendir(fd) if dirp == cast(Dir)nil { return nil, get_last_error() } return dirp, nil } @(private) _closedir :: proc(dirp: Dir) -> Error { rc := _unix_closedir(dirp) if rc != 0 { return get_last_error() } return nil } @(private) _rewinddir :: proc(dirp: Dir) { _unix_rewinddir(dirp) } @(private, require_results) _readdir :: proc(dirp: Dir) -> (entry: Dirent, err: Error, end_of_stream: bool) { result: ^Dirent rc := _unix_readdir_r(dirp, &entry, &result) if rc != 0 { err = get_last_error() return } err = nil if result == nil { end_of_stream = true return } return } @(private, require_results) _readlink :: proc(path: string) -> (string, Error) { 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 "", 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), nil } } } @(private, require_results) _dup :: proc(fd: Handle) -> (Handle, Error) { dup := _unix_dup(fd) if dup == -1 { return INVALID_HANDLE, get_last_error() } return dup, nil } // XXX OpenBSD @(require_results) absolute_path_from_handle :: proc(fd: Handle) -> (string, Error) { return "", Error(ENOSYS) } @(require_results) absolute_path_from_relative :: proc(rel: string, allocator := context.allocator) -> (path: string, err: Error) { 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 "", get_last_error() } defer _unix_free(rawptr(path_ptr)) return strings.clone(string(path_ptr), allocator) } access :: proc(path: string, mask: int) -> (bool, Error) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_access(cstr, c.int(mask)) if res == -1 { return false, get_last_error() } return true, nil } @(require_results) 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 } @(require_results) get_env :: proc(key: string, allocator := context.allocator) -> (value: string) { value, _ = lookup_env(key, allocator) return } @(require_results) get_current_directory :: proc(allocator := context.allocator) -> string { context.allocator = allocator buf := make([dynamic]u8, MAX_PATH) for { cwd := _unix_getcwd(cstring(raw_data(buf)), c.size_t(len(buf))) if cwd != nil { return string(cwd) } if get_last_error() != ERANGE { delete(buf) return "" } resize(&buf, len(buf) + MAX_PATH) } unreachable() } set_current_directory :: proc(path: string) -> (err: Error) { runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD() cstr := strings.clone_to_cstring(path, context.temp_allocator) res := _unix_chdir(cstr) if res == -1 { return get_last_error() } return nil } exit :: proc "contextless" (code: int) -> ! { runtime._cleanup_runtime_contextless() _unix_exit(c.int(code)) } @(require_results) current_thread_id :: proc "contextless" () -> int { return _unix_getthrid() } @(require_results) 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 } @(require_results) 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 } @(require_results) dlerror :: proc() -> string { return string(_unix_dlerror()) } @(require_results) 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 } _SC_NPROCESSORS_ONLN :: 503 @(private, require_results) _processor_core_count :: proc() -> int { return int(_sysconf(_SC_NPROCESSORS_ONLN)) } @(require_results) _alloc_command_line_arguments :: proc() -> []string { res := make([]string, len(runtime.args__)) for arg, i in runtime.args__ { res[i] = string(arg) } return res }