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 INVALID_HANDLE :: ~Handle(0) _Platform_Error :: enum i32 { NONE = 0, EPERM = 1, /* Operation not permitted */ ENOENT = 2, /* No such file or directory */ EINTR = 4, /* Interrupted system call */ ESRCH = 3, /* No such process */ EIO = 5, /* Input/output error */ ENXIO = 6, /* Device not configured */ E2BIG = 7, /* Argument list too long */ ENOEXEC = 8, /* Exec format error */ EBADF = 9, /* Bad file descriptor */ ECHILD = 10, /* No child processes */ EDEADLK = 11, /* Resource deadlock avoided. 11 was EAGAIN */ ENOMEM = 12, /* Cannot allocate memory */ EACCES = 13, /* Permission denied */ EFAULT = 14, /* Bad address */ ENOTBLK = 15, /* Block device required */ EBUSY = 16, /* Device busy */ EEXIST = 17, /* File exists */ EXDEV = 18, /* Cross-device link */ ENODEV = 19, /* Operation not supported by device */ ENOTDIR = 20, /* Not a directory */ EISDIR = 21, /* Is a directory */ EINVAL = 22, /* Invalid argument */ ENFILE = 23, /* Too many open files in system */ EMFILE = 24, /* Too many open files */ ENOTTY = 25, /* Inappropriate ioctl for device */ ETXTBSY = 26, /* Text file busy */ EFBIG = 27, /* File too large */ ENOSPC = 28, /* No space left on device */ ESPIPE = 29, /* Illegal seek */ EROFS = 30, /* Read-only file system */ EMLINK = 31, /* Too many links */ EPIPE = 32, /* Broken pipe */ /* math software */ EDOM = 33, /* Numerical argument out of domain */ ERANGE = 34, /* Result too large or too small */ /* non-blocking and interrupt i/o */ EAGAIN = 35, /* Resource temporarily unavailable */ EWOULDBLOCK = EAGAIN, /* Operation would block */ EINPROGRESS = 36, /* Operation now in progress */ EALREADY = 37, /* Operation already in progress */ /* ipc/network software -- argument errors */ ENOTSOCK = 38, /* Socket operation on non-socket */ EDESTADDRREQ = 39, /* Destination address required */ EMSGSIZE = 40, /* Message too long */ EPROTOTYPE = 41, /* Protocol wrong type for socket */ ENOPROTOOPT = 42, /* Protocol option not available */ EPROTONOSUPPORT = 43, /* Protocol not supported */ ESOCKTNOSUPPORT = 44, /* Socket type not supported */ EOPNOTSUPP = 45, /* Operation not supported */ EPFNOSUPPORT = 46, /* Protocol family not supported */ EAFNOSUPPORT = 47, /* Address family not supported by protocol family */ EADDRINUSE = 48, /* Address already in use */ EADDRNOTAVAIL = 49, /* Can't assign requested address */ /* ipc/network software -- operational errors */ ENETDOWN = 50, /* Network is down */ ENETUNREACH = 51, /* Network is unreachable */ ENETRESET = 52, /* Network dropped connection on reset */ ECONNABORTED = 53, /* Software caused connection abort */ ECONNRESET = 54, /* Connection reset by peer */ ENOBUFS = 55, /* No buffer space available */ EISCONN = 56, /* Socket is already connected */ ENOTCONN = 57, /* Socket is not connected */ ESHUTDOWN = 58, /* Can't send after socket shutdown */ ETOOMANYREFS = 59, /* Too many references: can't splice */ ETIMEDOUT = 60, /* Operation timed out */ ECONNREFUSED = 61, /* Connection refused */ ELOOP = 62, /* Too many levels of symbolic links */ ENAMETOOLONG = 63, /* File name too long */ /* should be rearranged */ EHOSTDOWN = 64, /* Host is down */ EHOSTUNREACH = 65, /* No route to host */ ENOTEMPTY = 66, /* Directory not empty */ /* quotas & mush */ EPROCLIM = 67, /* Too many processes */ EUSERS = 68, /* Too many users */ EDQUOT = 69, /* Disc quota exceeded */ /* Network File System */ ESTALE = 70, /* Stale NFS file handle */ EREMOTE = 71, /* Too many levels of remote in path */ EBADRPC = 72, /* RPC struct is bad */ ERPCMISMATCH = 73, /* RPC version wrong */ EPROGUNAVAIL = 74, /* RPC prog. not avail */ EPROGMISMATCH = 75, /* Program version wrong */ EPROCUNAVAIL = 76, /* Bad procedure for program */ ENOLCK = 77, /* No locks available */ ENOSYS = 78, /* Function not implemented */ EFTYPE = 79, /* Inappropriate file type or format */ EAUTH = 80, /* Authentication error */ ENEEDAUTH = 81, /* Need authenticator */ /* SystemV IPC */ EIDRM = 82, /* Identifier removed */ ENOMSG = 83, /* No message of desired type */ EOVERFLOW = 84, /* Value too large to be stored in data type */ /* Wide/multibyte-character handling, ISO/IEC 9899/AMD1:1995 */ EILSEQ = 85, /* Illegal byte sequence */ /* From IEEE Std 1003.1-2001 */ /* Base, Realtime, Threads or Thread Priority Scheduling option errors */ ENOTSUP = 86, /* Not supported */ /* Realtime option errors */ ECANCELED = 87, /* Operation canceled */ /* Realtime, XSI STREAMS option errors */ EBADMSG = 88, /* Bad or Corrupt message */ /* XSI STREAMS option errors */ ENODATA = 89, /* No message available */ ENOSR = 90, /* No STREAM resources */ ENOSTR = 91, /* Not a STREAM */ ETIME = 92, /* STREAM ioctl timeout */ /* File system extended attribute errors */ ENOATTR = 93, /* Attribute not found */ /* Realtime, XSI STREAMS option errors */ EMULTIHOP = 94, /* Multihop attempted */ ENOLINK = 95, /* Link has been severed */ EPROTO = 96, /* Protocol error */ /* Robust mutexes */ EOWNERDEAD = 97, /* Previous owner died */ ENOTRECOVERABLE = 98, /* State not recoverable */ ELAST = 98, /* Must equal largest Error */ } EPERM :: Platform_Error.EPERM /* Operation not permitted */ ENOENT :: Platform_Error.ENOENT /* No such file or directory */ EINTR :: Platform_Error.EINTR /* Interrupted system call */ ESRCH :: Platform_Error.ESRCH /* No such process */ EIO :: Platform_Error.EIO /* Input/output error */ ENXIO :: Platform_Error.ENXIO /* Device not configured */ E2BIG :: Platform_Error.E2BIG /* Argument list too long */ ENOEXEC :: Platform_Error.ENOEXEC /* Exec format error */ EBADF :: Platform_Error.EBADF /* Bad file descriptor */ ECHILD :: Platform_Error.ECHILD /* No child processes */ EDEADLK :: Platform_Error.EDEADLK /* Resource deadlock avoided. 11 was EAGAIN */ ENOMEM :: Platform_Error.ENOMEM /* Cannot allocate memory */ EACCES :: Platform_Error.EACCES /* Permission denied */ EFAULT :: Platform_Error.EFAULT /* Bad address */ ENOTBLK :: Platform_Error.ENOTBLK /* Block device required */ EBUSY :: Platform_Error.EBUSY /* Device busy */ EEXIST :: Platform_Error.EEXIST /* File exists */ EXDEV :: Platform_Error.EXDEV /* Cross-device link */ ENODEV :: Platform_Error.ENODEV /* Operation not supported by device */ ENOTDIR :: Platform_Error.ENOTDIR /* Not a directory */ EISDIR :: Platform_Error.EISDIR /* Is a directory */ EINVAL :: Platform_Error.EINVAL /* Invalid argument */ ENFILE :: Platform_Error.ENFILE /* Too many open files in system */ EMFILE :: Platform_Error.EMFILE /* Too many open files */ ENOTTY :: Platform_Error.ENOTTY /* Inappropriate ioctl for device */ ETXTBSY :: Platform_Error.ETXTBSY /* Text file busy */ EFBIG :: Platform_Error.EFBIG /* File too large */ ENOSPC :: Platform_Error.ENOSPC /* No space left on device */ ESPIPE :: Platform_Error.ESPIPE /* Illegal seek */ EROFS :: Platform_Error.EROFS /* Read-only file system */ EMLINK :: Platform_Error.EMLINK /* Too many links */ EPIPE :: Platform_Error.EPIPE /* Broken pipe */ /* math software */ EDOM :: Platform_Error.EDOM /* Numerical argument out of domain */ ERANGE :: Platform_Error.ERANGE /* Result too large or too small */ /* non-blocking and interrupt i/o */ EAGAIN :: Platform_Error.EAGAIN /* Resource temporarily unavailable */ EWOULDBLOCK :: EAGAIN /* Operation would block */ EINPROGRESS :: Platform_Error.EINPROGRESS /* Operation now in progress */ EALREADY :: Platform_Error.EALREADY /* Operation already in progress */ /* ipc/network software -- argument errors */ ENOTSOCK :: Platform_Error.ENOTSOCK /* Socket operation on non-socket */ EDESTADDRREQ :: Platform_Error.EDESTADDRREQ /* Destination address required */ EMSGSIZE :: Platform_Error.EMSGSIZE /* Message too long */ EPROTOTYPE :: Platform_Error.EPROTOTYPE /* Protocol wrong type for socket */ ENOPROTOOPT :: Platform_Error.ENOPROTOOPT /* Protocol option not available */ EPROTONOSUPPORT :: Platform_Error.EPROTONOSUPPORT /* Protocol not supported */ ESOCKTNOSUPPORT :: Platform_Error.ESOCKTNOSUPPORT /* Socket type not supported */ EOPNOTSUPP :: Platform_Error.EOPNOTSUPP /* Operation not supported */ EPFNOSUPPORT :: Platform_Error.EPFNOSUPPORT /* Protocol family not supported */ EAFNOSUPPORT :: Platform_Error.EAFNOSUPPORT /* Address family not supported by protocol family */ EADDRINUSE :: Platform_Error.EADDRINUSE /* Address already in use */ EADDRNOTAVAIL :: Platform_Error.EADDRNOTAVAIL /* Can't assign requested address */ /* ipc/network software -- operational errors */ ENETDOWN :: Platform_Error.ENETDOWN /* Network is down */ ENETUNREACH :: Platform_Error.ENETUNREACH /* Network is unreachable */ ENETRESET :: Platform_Error.ENETRESET /* Network dropped connection on reset */ ECONNABORTED :: Platform_Error.ECONNABORTED /* Software caused connection abort */ ECONNRESET :: Platform_Error.ECONNRESET /* Connection reset by peer */ ENOBUFS :: Platform_Error.ENOBUFS /* No buffer space available */ EISCONN :: Platform_Error.EISCONN /* Socket is already connected */ ENOTCONN :: Platform_Error.ENOTCONN /* Socket is not connected */ ESHUTDOWN :: Platform_Error.ESHUTDOWN /* Can't send after socket shutdown */ ETOOMANYREFS :: Platform_Error.ETOOMANYREFS /* Too many references: can't splice */ ETIMEDOUT :: Platform_Error.ETIMEDOUT /* Operation timed out */ ECONNREFUSED :: Platform_Error.ECONNREFUSED /* Connection refused */ ELOOP :: Platform_Error.ELOOP /* Too many levels of symbolic links */ ENAMETOOLONG :: Platform_Error.ENAMETOOLONG /* File name too long */ /* should be rearranged */ EHOSTDOWN :: Platform_Error.EHOSTDOWN /* Host is down */ EHOSTUNREACH :: Platform_Error.EHOSTUNREACH /* No route to host */ ENOTEMPTY :: Platform_Error.ENOTEMPTY /* Directory not empty */ /* quotas & mush */ EPROCLIM :: Platform_Error.EPROCLIM /* Too many processes */ EUSERS :: Platform_Error.EUSERS /* Too many users */ EDQUOT :: Platform_Error.EDQUOT /* Disc quota exceeded */ /* Network File System */ ESTALE :: Platform_Error.ESTALE /* Stale NFS file handle */ EREMOTE :: Platform_Error.EREMOTE /* Too many levels of remote in path */ EBADRPC :: Platform_Error.EBADRPC /* RPC struct is bad */ ERPCMISMATCH :: Platform_Error.ERPCMISMATCH /* RPC version wrong */ EPROGUNAVAIL :: Platform_Error.EPROGUNAVAIL /* RPC prog. not avail */ EPROGMISMATCH :: Platform_Error.EPROGMISMATCH /* Program version wrong */ EPROCUNAVAIL :: Platform_Error.EPROCUNAVAIL /* Bad procedure for program */ ENOLCK :: Platform_Error.ENOLCK /* No locks available */ ENOSYS :: Platform_Error.ENOSYS /* Function not implemented */ EFTYPE :: Platform_Error.EFTYPE /* Inappropriate file type or format */ EAUTH :: Platform_Error.EAUTH /* Authentication error */ ENEEDAUTH :: Platform_Error.ENEEDAUTH /* Need authenticator */ /* SystemV IPC */ EIDRM :: Platform_Error.EIDRM /* Identifier removed */ ENOMSG :: Platform_Error.ENOMSG /* No message of desired type */ EOVERFLOW :: Platform_Error.EOVERFLOW /* Value too large to be stored in data type */ /* Wide/multibyte-character handling, ISO/IEC 9899/AMD1:1995 */ EILSEQ :: Platform_Error.EILSEQ /* Illegal byte sequence */ /* From IEEE Std 1003.1-2001 */ /* Base, Realtime, Threads or Thread Priority Scheduling option errors */ ENOTSUP :: Platform_Error.ENOTSUP /* Not supported */ /* Realtime option errors */ ECANCELED :: Platform_Error.ECANCELED /* Operation canceled */ /* Realtime, XSI STREAMS option errors */ EBADMSG :: Platform_Error.EBADMSG /* Bad or Corrupt message */ /* XSI STREAMS option errors */ ENODATA :: Platform_Error.ENODATA /* No message available */ ENOSR :: Platform_Error.ENOSR /* No STREAM resources */ ENOSTR :: Platform_Error.ENOSTR /* Not a STREAM */ ETIME :: Platform_Error.ETIME /* STREAM ioctl timeout */ /* File system extended attribute errors */ ENOATTR :: Platform_Error.ENOATTR /* Attribute not found */ /* Realtime, XSI STREAMS option errors */ EMULTIHOP :: Platform_Error.EMULTIHOP /* Multihop attempted */ ENOLINK :: Platform_Error.ENOLINK /* Link has been severed */ EPROTO :: Platform_Error.EPROTO /* Protocol error */ /* Robust mutexes */ EOWNERDEAD :: Platform_Error.EOWNERDEAD /* Previous owner died */ ENOTRECOVERABLE :: Platform_Error.ENOTRECOVERABLE /* State not recoverable */ ELAST :: Platform_Error.ELAST /* Must equal largest Error */ /* end of Error */ 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 :: u32 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 @(require_results) S_ISLNK :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFLNK } @(require_results) S_ISREG :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFREG } @(require_results) S_ISDIR :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFDIR } @(require_results) S_ISCHR :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFCHR } @(require_results) S_ISBLK :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFBLK } @(require_results) S_ISFIFO :: #force_inline proc "contextless" (m: mode_t) -> bool { return (m & S_IFMT) == S_IFIFO } @(require_results) 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, #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: 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, #c_vararg args: ..any) -> c.int --- @(link_name="fsync") _unix_fsync :: proc(fd: Handle) -> 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_r30") _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 --- } @(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. @(require_results) is_path_separator :: proc(r: rune) -> bool { return r == '/' } @(require_results, no_instrumentation) get_last_error :: proc "contextless" () -> Error { return Platform_Error(__errno_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), 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 } // 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} @(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 } @(require_results) fcntl :: proc(fd: int, cmd: int, arg: int) -> (int, Error) { result := _unix_fcntl(Handle(fd), c.int(cmd), uintptr(arg)) if result < 0 { return 0, get_last_error() } return int(result), nil } // NOTE(bill): Uses startup to initialize it stdin: Handle = 0 stdout: Handle = 1 stderr: Handle = 2 @(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) s: OS_Stat = --- result := _unix_lstat(cstr, &s) if result == -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) { 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 } 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 } } 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) -> (path: string, err: Error) { buf: [MAX_PATH]byte _ = fcntl(int(fd), F_GETPATH, int(uintptr(&buf[0]))) or_return return strings.clone_from_cstring(cstring(&buf[0])) } @(require_results) absolute_path_from_relative :: proc(rel: string) -> (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)) path = strings.clone(string(path_ptr)) return path, nil } 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 :: 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() -> 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 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 int(_lwp_self()) } @(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 } @(private, require_results) _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 } @(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 }