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981 lines (864 loc) · 27.6 KB
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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"
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
8000
:: 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:
8BD0
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)
}
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)
}