mirror of
https://github.com/odin-lang/Odin.git
synced 2026-01-02 03:02:37 +00:00
275 lines
8.2 KiB
Odin
275 lines
8.2 KiB
Odin
foreign_system_library (
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dl "dl";
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libc "c";
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)
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import "strings.odin";
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type (
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Handle i32;
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FileTime u64;
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Errno i32;
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)
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const (
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O_RDONLY = 0x00000;
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O_WRONLY = 0x00001;
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O_RDWR = 0x00002;
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O_CREAT = 0x00040;
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O_EXCL = 0x00080;
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O_NOCTTY = 0x00100;
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O_TRUNC = 0x00200;
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O_NONBLOCK = 0x00800;
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O_APPEND = 0x00400;
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O_SYNC = 0x01000;
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O_ASYNC = 0x02000;
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O_CLOEXEC = 0x80000;
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SEEK_SET = 0;
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SEEK_CUR = 1;
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SEEK_END = 2;
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SEEK_DATA = 3;
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SEEK_HOLE = 4;
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SEEK_MAX = SEEK_HOLE;
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// NOTE(zangent): These are OS specific!
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// Do not mix these up!
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RTLD_LAZY = 0x001;
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RTLD_NOW = 0x002;
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RTLD_BINDING_MASK = 0x3;
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RTLD_GLOBAL = 0x100;
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)
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// "Argv" arguments converted to Odin strings
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let args = _alloc_command_line_arguments();
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type _FileTime struct #ordered {
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seconds: i64,
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nanoseconds: i32,
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reserved: i32,
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}
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// Translated from
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// https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6/+/jb-dev/sysroot/usr/include/bits/stat.h
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// Validity is not guaranteed.
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type Stat struct #ordered {
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device_id: u64, // ID of device containing file
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serial: u64, // File serial number
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nlink: u32, // Number of hard links
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mode: u32, // Mode of the file
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uid: u32, // User ID of the file's owner
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gid: u32, // Group ID of the file's group
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_padding: i32, // 32 bits of padding
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rdev: u64, // Device ID, if device
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size: i64, // Size of the file, in bytes
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block_size: i64, // Optimal bllocksize for I/O
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blocks: i64, // Number of 512-byte blocks allocated
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last_access: _FileTime, // Time of last access
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modified: _FileTime, // Time of last modification
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status_change: _FileTime, // Time of last status change
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_reserve1,
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_reserve2,
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_reserve3: i64,
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serial_numbe: u64, // File serial number...? Maybe.
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_reserve4: i64,
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};
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// File type
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const (
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S_IFMT = 0170000; // Type of file mask
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S_IFIFO = 0010000; // Named pipe (fifo)
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S_IFCHR = 0020000; // Character special
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S_IFDIR = 0040000; // Directory
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S_IFBLK = 0060000; // Block special
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S_IFREG = 0100000; // Regular
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S_IFLNK = 0120000; // Symbolic link
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S_IFSOCK = 0140000; // Socket
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// File mode
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// Read, write, execute/search by owner
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S_IRWXU = 0000700; // RWX mask for owner
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S_IRUSR = 0000400; // R for owner
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S_IWUSR = 0000200; // W for owner
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S_IXUSR = 0000100; // X for owner
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// Read, write, execute/search by group
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S_IRWXG = 0000070; // RWX mask for group
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S_IRGRP = 0000040; // R for group
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S_IWGRP = 0000020; // W for group
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S_IXGRP = 0000010; // X for group
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// Read, write, execute/search by others
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S_IRWXO = 0000007; // RWX mask for other
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S_IROTH = 0000004; // R for other
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S_IWOTH = 0000002; // W for other
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S_IXOTH = 0000001; // X for other
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S_ISUID = 0004000; // Set user id on execution
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S_ISGID = 0002000; // Set group id on execution
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S_ISVTX = 0001000; // Directory restrcted delete
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)
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proc S_ISLNK (m: u32) -> bool #inline {return (m & S_IFMT) == S_IFLNK; }
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proc S_ISREG (m: u32) -> bool #inline {return (m & S_IFMT) == S_IFREG; }
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proc S_ISDIR (m: u32) -> bool #inline {return (m & S_IFMT) == S_IFDIR; }
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proc S_ISCHR (m: u32) -> bool #inline {return (m & S_IFMT) == S_IFCHR; }
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proc S_ISBLK (m: u32) -> bool #inline {return (m & S_IFMT) == S_IFBLK; }
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proc S_ISFIFO(m: u32) -> bool #inline {return (m & S_IFMT) == S_IFIFO; }
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proc S_ISSOCK(m: u32) -> bool #inline {return (m & S_IFMT) == S_IFSOCK;}
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const (
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R_OK = 4; // Test for read permission
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W_OK = 2; // Test for write permission
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X_OK = 1; // Test for execute permission
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F_OK = 0; // Test for file existance
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)
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proc _unix_open (path: ^u8, mode: int) -> Handle #foreign libc "open";
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proc _unix_close (fd: Handle) -> i32 #foreign libc "close";
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proc _unix_read (fd: Handle, buf: rawptr, size: int) -> int #foreign libc "read";
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proc _unix_write (fd: Handle, buf: rawptr, size: int) -> int #foreign libc "write";
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proc _unix_seek (fd: Handle, offset: i64, whence: i32) -> i64 #foreign libc "lseek64";
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proc _unix_gettid() -> u64 #foreign libc "gettid";
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proc _unix_stat (path: ^u8, stat: ^Stat) -> i32 #foreign libc "stat";
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proc _unix_access(path: ^u8, mask: int) -> i32 #foreign libc "access";
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proc _unix_malloc (size: int) -> rawptr #foreign libc "malloc";
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proc _unix_free (ptr: rawptr) #foreign libc "free";
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proc _unix_realloc(ptr: rawptr, size: int) -> rawptr #foreign libc "realloc";
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proc _unix_getenv (^u8) -> ^u8 #foreign libc "getenv";
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proc _unix_exit(status: int) #foreign libc "exit";
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proc _unix_dlopen (filename: ^u8, flags: int) -> rawptr #foreign dl "dlopen";
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proc _unix_dlsym (handle: rawptr, symbol: ^u8) -> (proc() #cc_c) #foreign dl "dlsym";
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proc _unix_dlclose(handle: rawptr) -> int #foreign dl "dlclose";
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proc _unix_dlerror() -> ^u8 #foreign dl "dlerror";
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// TODO(zangent): Change this to just `open` when Bill fixes overloading.
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proc open_simple(path: string, mode: int) -> (Handle, Errno) {
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var cstr = strings.new_c_string(path);
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var handle = _unix_open(cstr, mode);
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free(cstr);
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if(handle == -1) {
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return 0, 1;
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}
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return handle, 0;
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}
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// NOTE(zangent): This is here for compatability reasons. Should this be here?
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proc open(path: string, mode: int, perm: u32) -> (Handle, Errno) {
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return open_simple(path, mode);
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}
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proc close(fd: Handle) {
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_unix_close(fd);
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}
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proc read(fd: Handle, data: []u8) -> (int, Errno) {
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var sz = _unix_read(fd, &data[0], len(data));
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return sz, 0;
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}
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proc write(fd: Handle, data: []u8) -> (int, Errno) {
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var sz = _unix_write(fd, &data[0], len(data));
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return sz, 0;
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}
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proc seek(fd: Handle, offset: i64, whence: int) -> (i64, Errno) {
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var res = _unix_seek(fd, offset, i32(whence));
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return res, 0;
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}
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proc file_size(fd: Handle) -> (i64, Errno) {
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var prev, _ = seek(fd, 0, SEEK_CUR);
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var size, err = seek(fd, 0, SEEK_END);
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seek(fd, prev, SEEK_SET);
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return size, err;
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}
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// NOTE(bill): Uses startup to initialize it
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var (
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stdin: Handle = 0;
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stdout: Handle = 1;
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stderr: Handle = 2;
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)
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/* TODO(zangent): Implement these!
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proc last_write_time(fd: Handle) -> FileTime {}
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proc last_write_time_by_name(name: string) -> FileTime {}
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*/
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proc stat(path: string) -> (Stat, int) #inline {
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var s: Stat;
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var cstr = strings.new_c_string(path);
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defer free(cstr);
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var ret_int = _unix_stat(cstr, &s);
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return s, int(ret_int);
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}
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proc access(path: string, mask: int) -> bool #inline {
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var cstr = strings.new_c_string(path);
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defer free(cstr);
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return _unix_access(cstr, mask) == 0;
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}
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proc heap_alloc(size: int) -> rawptr {
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assert(size > 0);
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return _unix_malloc(size);
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}
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proc heap_resize(ptr: rawptr, new_size: int) -> rawptr {
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return _unix_realloc(ptr, new_size);
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}
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proc heap_free(ptr: rawptr) {
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_unix_free(ptr);
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}
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proc getenv(name: string) -> (string, bool) {
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var path_str = strings.new_c_string(name);
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var cstr: ^u8 = _unix_getenv(path_str);
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free(path_str);
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if(cstr == nil) {
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return "", false;
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}
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return strings.to_odin_string(cstr), true;
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}
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proc exit(code: int) {
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_unix_exit(code);
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}
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proc current_thread_id() -> int {
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// return int(_unix_gettid());
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return 0;
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}
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proc dlopen(filename: string, flags: int) -> rawptr #inline {
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var cstr = strings.new_c_string(filename);
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var handle = _unix_dlopen(cstr, flags);
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free(cstr);
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return handle;
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}
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proc dlsym(handle: rawptr, symbol: string) -> (proc() #cc_c) #inline {
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assert(handle != nil);
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var cstr = strings.new_c_string(symbol);
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var proc_handle = _unix_dlsym(handle, cstr);
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free(cstr);
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return proc_handle;
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}
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proc dlclose(handle: rawptr) -> bool #inline {
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assert(handle != nil);
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return _unix_dlclose(handle) == 0;
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}
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proc dlerror() -> string {
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return strings.to_odin_string(_unix_dlerror());
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}
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proc _alloc_command_line_arguments() -> []string {
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// TODO(bill):
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return nil;
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}
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