package os_old foreign import dl "system:dl" foreign import libc "system:c" import "base:runtime" import "core:strings" import "core:c" import "core:sys/freebsd" Handle :: 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, EBEADLK = 11, ENOMEM = 12, EACCESS = 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, /* Result too large */ EAGAIN = 35, 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, ETIMEDOUT = 60, ECONNREFUSED = 61, ELOOP = 62, ENAMETOOLING = 63, EHOSTDOWN = 64, EHOSTUNREACH = 65, ENOTEMPTY = 66, EPROCLIM = 67, EUSERS = 68, EDQUOT = 69, ESTALE = 70, EBADRPC = 72, ERPCMISMATCH = 73, EPROGUNAVAIL = 74, EPROGMISMATCH = 75, EPROCUNAVAIL = 76, ENOLCK = 77, ENOSYS = 78, EFTYPE = 79, EAUTH = 80, ENEEDAUTH = 81, EIDRM = 82, ENOMSG = 83, EOVERFLOW = 84, ECANCELED = 85, EILSEQ = 86, ENOATTR = 87, EDOOFUS = 88, EBADMSG = 89, EMULTIHOP = 90, ENOLINK = 91, EPROTO = 92, ENOTCAPABLE = 93, ECAPMODE = 94, ENOTRECOVERABLE = 95, EOWNERDEAD = 96, } 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 EBEADLK :: Platform_Error.EBEADLK ENOMEM :: Platform_Error.ENOMEM EACCESS :: Platform_Error.EACCESS 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 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 ETIMEDOUT :: Platform_Error.ETIMEDOUT ECONNREFUSED :: Platform_Error.ECONNREFUSED ELOOP :: Platform_Error.ELOOP ENAMETOOLING :: Platform_Error.ENAMETOOLING 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 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 EIDRM :: Platform_Error.EIDRM ENOMSG :: Platform_Error.ENOMSG EOVERFLOW :: Platform_Error.EOVERFLOW ECANCELED :: Platform_Error.ECANCELED EILSEQ :: Platform_Error.EILSEQ ENOATTR :: Platform_Error.ENOATTR EDOOFUS :: Platform_Error.EDOOFUS EBADMSG :: Platform_Error.EBADMSG EMULTIHOP :: Platform_Error.EMULTIHOP ENOLINK :: Platform_Error.ENOLINK EPROTO :: Platform_Error.EPROTO ENOTCAPABLE :: Platform_Error.ENOTCAPABLE ECAPMODE :: Platform_Error.ECAPMODE ENOTRECOVERABLE :: Platform_Error.ENOTRECOVERABLE EOWNERDEAD :: Platform_Error.EOWNERDEAD 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 :: 0100000 SEEK_DATA :: 3 SEEK_HOLE :: 4 SEEK_MAX :: SEEK_HOLE // NOTE: These are OS specific! // Do not mix these up! RTLD_LAZY :: 0x001 RTLD_NOW :: 0x002 //RTLD_BINDING_MASK :: 0x3 // Called MODEMASK in dlfcn.h RTLD_GLOBAL :: 0x100 RTLD_LOCAL :: 0x000 RTLD_TRACE :: 0x200 RTLD_NODELETE :: 0x01000 RTLD_NOLOAD :: 0x02000 MAX_PATH :: 1024 KINFO_FILE_SIZE :: 1392 args := _alloc_command_line_arguments() Unix_File_Time :: struct { seconds: time_t, nanoseconds: c.long, } dev_t :: u64 ino_t :: u64 nlink_t :: u64 off_t :: i64 mode_t :: u16 pid_t :: u32 uid_t :: u32 gid_t :: u32 blkcnt_t :: i64 blksize_t :: i32 fflags_t :: u32 when ODIN_ARCH == .amd64 || ODIN_ARCH == .arm64 /* LP64 */ { time_t :: i64 } else { time_t :: i32 } OS_Stat :: struct { device_id: dev_t, serial: ino_t, nlink: nlink_t, mode: mode_t, _padding0: i16, 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: u64, lspare: [10]u64, } KInfo_File :: struct { structsize: c.int, type: c.int, fd: c.int, ref_count: c.int, flags: c.int, pad0: c.int, offset: i64, // NOTE(Feoramund): This field represents a complicated union that I am // avoiding implementing for now. I only need the path data below. _union: [336]byte, path: [MAX_PATH]c.char, } // since FreeBSD v12 Dirent :: struct { ino: ino_t, off: off_t, reclen: u16, type: u8, _pad0: u8, namlen: u16, _pad1: u16, name: [256]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 //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_ISVTX :: 0o1000 // Directory restrcted delete @(require_results) S_ISLNK :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFLNK } @(require_results) S_ISREG :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFREG } @(require_results) S_ISDIR :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFDIR } @(require_results) S_ISCHR :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFCHR } @(require_results) S_ISBLK :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFBLK } @(require_results) S_ISFIFO :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFIFO } @(require_results) S_ISSOCK :: #force_inline proc(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 F_KINFO :: 22 foreign libc { @(link_name="__error") __Error_location :: proc() -> ^c.int --- @(link_name="open") _unix_open :: proc(path: cstring, flags: c.int, #c_vararg mode: ..u16) -> 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="lstat") _unix_lstat :: proc(path: cstring, sb: ^OS_Stat) -> c.int --- @(link_name="fstat") _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, #c_vararg args: ..any) -> c.int --- @(link_name="dup") _unix_dup :: proc(fd: Handle) -> Handle --- @(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="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 --- @(link_name="pthread_getthreadid_np") pthread_getthreadid_np :: proc() -> c.int --- } @(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_location()^) } @(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), u16(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 { return cast(_Platform_Error)freebsd.fsync(cast(freebsd.Fd)fd) } // If you read or write more than `INT_MAX` bytes, FreeBSD 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, errno := freebsd.pread(cast(freebsd.Fd)fd, data[:to_read], cast(freebsd.off_t)offset) return bytes_read, cast(_Platform_Error)errno } 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, errno := freebsd.pwrite(cast(freebsd.Fd)fd, data[:to_write], cast(freebsd.off_t)offset) return bytes_written, cast(_Platform_Error)errno } 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 case: 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} @(require_results) 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 } // 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) -> (File_Time, Error) { s, err := _fstat(fd) if err != nil { return 0, err } 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) -> (File_Time, Error) { s, err := _stat(name) if err != nil { return 0, err } modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds return File_Time(modified), nil } @(private, require_results, no_sanitize_memory) _stat :: proc(path: string) -> (OS_Stat, Error) { 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, get_last_error() } return s, nil } @(private, require_results, no_sanitize_memory) _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, no_sanitize_memory) _fstat :: proc(fd: Handle) -> (OS_Stat, Error) { s: OS_Stat = --- result := _unix_fstat(fd, &s) if result == -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 } 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 } } return "", Error{} } @(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 } @(require_results) absolute_path_from_handle :: proc(fd: Handle) -> (string, Error) { // NOTE(Feoramund): The situation isn't ideal, but this was the best way I // could find to implement this. There are a couple outstanding bug reports // regarding the desire to retrieve an absolute path from a handle, but to // my knowledge, there hasn't been any work done on it. // // https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198570 // // This may be unreliable, according to a comment from 2023. kinfo: KInfo_File kinfo.structsize = KINFO_FILE_SIZE res := _unix_fcntl(fd, F_KINFO, cast(uintptr)&kinfo) if res == -1 { return "", get_last_error() } path := strings.clone_from_cstring_bounded(cast(cstring)&kinfo.path[0], len(kinfo.path)) return path, nil } @(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) result := _unix_access(cstr, c.int(mask)) if result == -1 { return false, get_last_error() } return true, nil } @(require_results) lookup_env_alloc :: 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) // NOTE(tetra): Lifetime of 'cstr' is unclear, but _unix_free(cstr) segfaults. cstr := _unix_getenv(path_str) if cstr == nil { return "", false } return strings.clone(string(cstr), allocator), true } @(require_results) lookup_env_buffer :: proc(buf: []u8, key: string) -> (value: string, err: Error) { if len(key) + 1 > len(buf) { return "", .Buffer_Full } else { copy(buf, key) buf[len(key)] = 0 } if value = string(_unix_getenv(cstring(raw_data(buf)))); value == "" { return "", .Env_Var_Not_Found } else { if len(value) > len(buf) { return "", .Buffer_Full } else { copy(buf, value) return string(buf[:len(value)]), nil } } } lookup_env :: proc{lookup_env_alloc, lookup_env_buffer} @(require_results) get_env_alloc :: proc(key: string, allocator := context.allocator) -> (value: string) { value, _ = lookup_env(key, allocator) return } @(require_results) get_env_buf :: proc(buf: []u8, key: string) -> (value: string) { value, _ = lookup_env(buf, key) return } get_env :: proc{get_env_alloc, get_env_buf} @(require_results) get_current_directory :: proc(allocator := context.allocator) -> string { context.allocator = allocator // 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 get_last_error() != ERANGE { delete(buf) return "" } resize(&buf, len(buf)+page_size) } 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 cast(int) pthread_getthreadid_np() } @(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 } 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 } @(private, require_results) _processor_core_count :: proc() -> int { count : int = 0 count_size := size_of(count) if _sysctlbyname("hw.ncpu", &count, &count_size, nil, 0) == 0 { if count > 0 { return count } } return 1 } @(private, require_results) _alloc_command_line_arguments :: proc "contextless" () -> []string { context = runtime.default_context() res := make([]string, len(runtime.args__)) for _, i in res { res[i] = string(runtime.args__[i]) } return res } @(private, fini) _delete_command_line_arguments :: proc "contextless" () { context = runtime.default_context() delete(args) }