mirror of
https://github.com/odin-lang/Odin.git
synced 2025-12-31 18:32:12 +00:00
401 lines
11 KiB
Odin
401 lines
11 KiB
Odin
package os
|
|
|
|
foreign import dl "system:dl"
|
|
foreign import libc "system:c"
|
|
|
|
import "core:runtime"
|
|
import "core:strings"
|
|
|
|
OS :: "linux";
|
|
|
|
Handle :: distinct i32;
|
|
File_Time :: distinct u64;
|
|
Errno :: distinct i32;
|
|
Syscall :: distinct int;
|
|
|
|
INVALID_HANDLE :: ~Handle(0);
|
|
|
|
ERROR_NONE: Errno : 0;
|
|
EPERM: Errno : 1;
|
|
ENOENT: Errno : 2;
|
|
EINTR: Errno : 4;
|
|
EIO: Errno : 5;
|
|
ENXIO: Errno : 6;
|
|
EBADF: Errno : 9;
|
|
EAGAIN: Errno : 11;
|
|
EWOULDBLOCK: Errno : EAGAIN;
|
|
ENOMEM: Errno : 12;
|
|
EACCES: Errno : 13;
|
|
EFAULT: Errno : 14;
|
|
EEXIST: Errno : 17;
|
|
ENODEV: Errno : 19;
|
|
ENOTDIR: Errno : 20;
|
|
EISDIR: Errno : 21;
|
|
EINVAL: Errno : 22;
|
|
ENFILE: Errno : 23;
|
|
EMFILE: Errno : 24;
|
|
ETXTBSY: Errno : 26;
|
|
EFBIG: Errno : 27;
|
|
ENOSPC: Errno : 28;
|
|
ESPIPE: Errno : 29;
|
|
EROFS: Errno : 30;
|
|
EPIPE: Errno : 32;
|
|
ENAMETOOLONG: Errno : 36;
|
|
ELOOP: Errno : 40;
|
|
EOVERFLOW: Errno : 75;
|
|
EDESTADDRREQ: Errno : 89;
|
|
EOPNOTSUPP: Errno : 95;
|
|
EDQUOT: Errno : 122;
|
|
|
|
O_RDONLY :: 0x00000;
|
|
O_WRONLY :: 0x00001;
|
|
O_RDWR :: 0x00002;
|
|
O_CREATE :: 0x00040;
|
|
O_EXCL :: 0x00080;
|
|
O_NOCTTY :: 0x00100;
|
|
O_TRUNC :: 0x00200;
|
|
O_NONBLOCK :: 0x00800;
|
|
O_APPEND :: 0x00400;
|
|
O_SYNC :: 0x01000;
|
|
O_ASYNC :: 0x02000;
|
|
O_CLOEXEC :: 0x80000;
|
|
|
|
|
|
SEEK_SET :: 0;
|
|
SEEK_CUR :: 1;
|
|
SEEK_END :: 2;
|
|
SEEK_DATA :: 3;
|
|
SEEK_HOLE :: 4;
|
|
SEEK_MAX :: SEEK_HOLE;
|
|
|
|
// NOTE(zangent): These are OS specific!
|
|
// Do not mix these up!
|
|
RTLD_LAZY :: 0x001;
|
|
RTLD_NOW :: 0x002;
|
|
RTLD_BINDING_MASK :: 0x3;
|
|
RTLD_GLOBAL :: 0x100;
|
|
|
|
// "Argv" arguments converted to Odin strings
|
|
args := _alloc_command_line_arguments();
|
|
|
|
_File_Time :: struct {
|
|
seconds: i64,
|
|
nanoseconds: i64,
|
|
}
|
|
|
|
Stat :: struct {
|
|
device_id: u64, // ID of device containing file
|
|
serial: u64, // File serial number
|
|
nlink: u64, // Number of hard links
|
|
mode: u32, // Mode of the file
|
|
uid: u32, // User ID of the file's owner
|
|
gid: u32, // Group ID of the file's group
|
|
_padding: i32, // 32 bits of padding
|
|
rdev: u64, // Device ID, if device
|
|
size: i64, // Size of the file, in bytes
|
|
block_size: i64, // Optimal bllocksize for I/O
|
|
blocks: i64, // Number of 512-byte blocks allocated
|
|
|
|
last_access: _File_Time, // Time of last access
|
|
modified: _File_Time, // Time of last modification
|
|
status_change: _File_Time, // Time of last status change
|
|
|
|
_reserve1,
|
|
_reserve2,
|
|
_reserve3: i64,
|
|
};
|
|
|
|
// 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
|
|
|
|
|
|
S_ISLNK :: inline proc(m: u32) -> bool do return (m & S_IFMT) == S_IFLNK;
|
|
S_ISREG :: inline proc(m: u32) -> bool do return (m & S_IFMT) == S_IFREG;
|
|
S_ISDIR :: inline proc(m: u32) -> bool do return (m & S_IFMT) == S_IFDIR;
|
|
S_ISCHR :: inline proc(m: u32) -> bool do return (m & S_IFMT) == S_IFCHR;
|
|
S_ISBLK :: inline proc(m: u32) -> bool do return (m & S_IFMT) == S_IFBLK;
|
|
S_ISFIFO :: inline proc(m: u32) -> bool do return (m & S_IFMT) == S_IFIFO;
|
|
S_ISSOCK :: inline proc(m: u32) -> bool do 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
|
|
|
|
TimeSpec :: struct {
|
|
tv_sec : i64, /* seconds */
|
|
tv_nsec : i64, /* nanoseconds */
|
|
};
|
|
|
|
CLOCK_REALTIME :: 0;
|
|
CLOCK_MONOTONIC :: 1;
|
|
CLOCK_PROCESS_CPUTIME_ID :: 2;
|
|
CLOCK_THREAD_CPUTIME_ID :: 3;
|
|
CLOCK_MONOTONIC_RAW :: 4;
|
|
CLOCK_REALTIME_COARSE :: 5;
|
|
CLOCK_MONOTONIC_COARSE :: 6;
|
|
CLOCK_BOOTTIME :: 7;
|
|
CLOCK_REALTIME_ALARM :: 8;
|
|
CLOCK_BOOTTIME_ALARM :: 9;
|
|
|
|
SYS_GETTID: Syscall : 186;
|
|
|
|
foreign libc {
|
|
@(link_name="__errno_location") __errno_location :: proc() -> ^int ---;
|
|
@(link_name="syscall") syscall :: proc(number: Syscall, #c_vararg args: ..any) -> int ---;
|
|
|
|
@(link_name="open") _unix_open :: proc(path: cstring, flags: int, #c_vararg mode: ..any) -> Handle ---;
|
|
@(link_name="close") _unix_close :: proc(fd: Handle) -> int ---;
|
|
@(link_name="read") _unix_read :: proc(fd: Handle, buf: rawptr, size: int) -> int ---;
|
|
@(link_name="write") _unix_write :: proc(fd: Handle, buf: rawptr, size: int) -> int ---;
|
|
@(link_name="lseek64") _unix_seek :: proc(fd: Handle, offset: i64, whence: i32) -> i64 ---;
|
|
@(link_name="gettid") _unix_gettid :: proc() -> u64 ---;
|
|
@(link_name="stat") _unix_stat :: proc(path: cstring, stat: ^Stat) -> int ---;
|
|
@(link_name="fstat") _unix_fstat :: proc(fd: Handle, stat: ^Stat) -> int ---;
|
|
@(link_name="access") _unix_access :: proc(path: cstring, mask: int) -> int ---;
|
|
|
|
@(link_name="malloc") _unix_malloc :: proc(size: int) -> rawptr ---;
|
|
@(link_name="calloc") _unix_calloc :: proc(num, size: int) -> rawptr ---;
|
|
@(link_name="free") _unix_free :: proc(ptr: rawptr) ---;
|
|
@(link_name="realloc") _unix_realloc :: proc(ptr: rawptr, size: int) -> rawptr ---;
|
|
@(link_name="getenv") _unix_getenv :: proc(cstring) -> cstring ---;
|
|
|
|
@(link_name="clock_gettime") _unix_clock_gettime :: proc(clock_id: u64, timespec: ^TimeSpec) ---;
|
|
@(link_name="nanosleep") _unix_nanosleep :: proc(requested: ^TimeSpec, remaining: ^TimeSpec) -> int ---;
|
|
@(link_name="sleep") _unix_sleep :: proc(seconds: u64) -> int ---;
|
|
|
|
@(link_name="exit") _unix_exit :: proc(status: int) -> ! ---;
|
|
}
|
|
foreign dl {
|
|
@(link_name="dlopen") _unix_dlopen :: proc(filename: cstring, flags: int) -> rawptr ---;
|
|
@(link_name="dlsym") _unix_dlsym :: proc(handle: rawptr, symbol: cstring) -> rawptr ---;
|
|
@(link_name="dlclose") _unix_dlclose :: proc(handle: rawptr) -> int ---;
|
|
@(link_name="dlerror") _unix_dlerror :: proc() -> cstring ---;
|
|
}
|
|
|
|
is_path_separator :: proc(r: rune) -> bool {
|
|
return r == '/';
|
|
}
|
|
|
|
get_last_error :: proc() -> int {
|
|
return __errno_location()^;
|
|
}
|
|
|
|
open :: proc(path: string, flags: int = O_RDONLY, mode: int = 0) -> (Handle, Errno) {
|
|
cstr := strings.clone_to_cstring(path);
|
|
handle := _unix_open(cstr, flags, mode);
|
|
delete(cstr);
|
|
if handle == -1 {
|
|
return INVALID_HANDLE, Errno(get_last_error());
|
|
}
|
|
return handle, ERROR_NONE;
|
|
}
|
|
|
|
close :: proc(fd: Handle) -> Errno {
|
|
result := _unix_close(fd);
|
|
if result == -1 {
|
|
return Errno(get_last_error());
|
|
}
|
|
return ERROR_NONE;
|
|
}
|
|
|
|
read :: proc(fd: Handle, data: []byte) -> (int, Errno) {
|
|
bytes_read := _unix_read(fd, &data[0], len(data));
|
|
if bytes_read == -1 {
|
|
return -1, Errno(get_last_error());
|
|
}
|
|
return bytes_read, ERROR_NONE;
|
|
}
|
|
|
|
write :: proc(fd: Handle, data: []byte) -> (int, Errno) {
|
|
bytes_written := _unix_write(fd, &data[0], len(data));
|
|
if bytes_written == -1 {
|
|
return -1, Errno(get_last_error());
|
|
}
|
|
return bytes_written, ERROR_NONE;
|
|
}
|
|
|
|
seek :: proc(fd: Handle, offset: i64, whence: int) -> (i64, Errno) {
|
|
res := _unix_seek(fd, offset, i32(whence));
|
|
if res == -1 {
|
|
return -1, Errno(get_last_error());
|
|
}
|
|
return res, ERROR_NONE;
|
|
}
|
|
|
|
file_size :: proc(fd: Handle) -> (i64, Errno) {
|
|
s, err := fstat(fd);
|
|
if err != ERROR_NONE {
|
|
return -1, err;
|
|
}
|
|
return s.size, ERROR_NONE;
|
|
}
|
|
|
|
|
|
// 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 {}
|
|
*/
|
|
last_write_time :: proc(fd: Handle) -> (File_Time, Errno) {
|
|
s, err := fstat(fd);
|
|
if err != ERROR_NONE {
|
|
return 0, err;
|
|
}
|
|
return File_Time(s.modified.nanoseconds), ERROR_NONE;
|
|
}
|
|
|
|
last_write_time_by_name :: proc(name: string) -> (File_Time, Errno) {
|
|
s, err := stat(name);
|
|
if err != ERROR_NONE {
|
|
return 0, err;
|
|
}
|
|
return File_Time(s.modified.nanoseconds), ERROR_NONE;
|
|
}
|
|
|
|
stat :: inline proc(path: string) -> (Stat, Errno) {
|
|
cstr := strings.clone_to_cstring(path);
|
|
defer delete(cstr);
|
|
|
|
s: Stat;
|
|
result := _unix_stat(cstr, &s);
|
|
if result == -1 {
|
|
return s, Errno(get_last_error());
|
|
}
|
|
return s, ERROR_NONE;
|
|
}
|
|
|
|
fstat :: inline proc(fd: Handle) -> (Stat, Errno) {
|
|
s: Stat;
|
|
result := _unix_fstat(fd, &s);
|
|
if result == -1 {
|
|
return s, Errno(get_last_error());
|
|
}
|
|
return s, ERROR_NONE;
|
|
}
|
|
|
|
access :: inline proc(path: string, mask: int) -> (bool, Errno) {
|
|
cstr := strings.clone_to_cstring(path);
|
|
defer delete(cstr);
|
|
result := _unix_access(cstr, mask);
|
|
if result == -1 {
|
|
return false, Errno(get_last_error());
|
|
}
|
|
return true, ERROR_NONE;
|
|
}
|
|
|
|
heap_alloc :: proc(size: int) -> rawptr {
|
|
assert(size >= 0);
|
|
return _unix_calloc(1, size);
|
|
}
|
|
|
|
heap_resize :: proc(ptr: rawptr, new_size: int) -> rawptr {
|
|
return _unix_realloc(ptr, new_size);
|
|
}
|
|
|
|
heap_free :: proc(ptr: rawptr) {
|
|
_unix_free(ptr);
|
|
}
|
|
|
|
getenv :: proc(name: string) -> (string, bool) {
|
|
path_str := strings.clone_to_cstring(name);
|
|
defer delete(path_str);
|
|
cstr := _unix_getenv(path_str);
|
|
if cstr == nil {
|
|
return "", false;
|
|
}
|
|
return string(cstr), true;
|
|
}
|
|
|
|
exit :: proc(code: int) -> ! {
|
|
_unix_exit(code);
|
|
}
|
|
|
|
clock_gettime :: proc(clock_id: u64) -> TimeSpec {
|
|
ts : TimeSpec;
|
|
_unix_clock_gettime(clock_id, &ts);
|
|
return ts;
|
|
}
|
|
|
|
sleep :: proc(seconds: u64) -> int {
|
|
|
|
return _unix_sleep(seconds);
|
|
}
|
|
|
|
nanosleep :: proc(nanoseconds: i64) -> int {
|
|
assert(nanoseconds <= 999999999);
|
|
requested, remaining : TimeSpec;
|
|
requested = TimeSpec{tv_nsec = nanoseconds};
|
|
|
|
return _unix_nanosleep(&requested, &remaining);
|
|
}
|
|
|
|
current_thread_id :: proc "contextless" () -> int {
|
|
return syscall(SYS_GETTID);
|
|
}
|
|
|
|
dlopen :: inline proc(filename: string, flags: int) -> rawptr {
|
|
cstr := strings.clone_to_cstring(filename);
|
|
defer delete(cstr);
|
|
handle := _unix_dlopen(cstr, flags);
|
|
return handle;
|
|
}
|
|
dlsym :: inline proc(handle: rawptr, symbol: string) -> rawptr {
|
|
assert(handle != nil);
|
|
cstr := strings.clone_to_cstring(symbol);
|
|
defer delete(cstr);
|
|
proc_handle := _unix_dlsym(handle, cstr);
|
|
return proc_handle;
|
|
}
|
|
dlclose :: inline proc(handle: rawptr) -> bool {
|
|
assert(handle != nil);
|
|
return _unix_dlclose(handle) == 0;
|
|
}
|
|
dlerror :: proc() -> string {
|
|
return string(_unix_dlerror());
|
|
}
|
|
|
|
|
|
_alloc_command_line_arguments :: proc() -> []string {
|
|
args := make([]string, len(runtime.args__));
|
|
for arg, i in runtime.args__ {
|
|
args[i] = string(arg);
|
|
}
|
|
return args;
|
|
}
|