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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, 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
}
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, 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)
}
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 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())