136 lines
4.6 KiB
JavaScript
136 lines
4.6 KiB
JavaScript
import { WasiError } from "./error.mjs";
|
|
import { WasiErrno, WasiRights, WasiFileType } from "./types.mjs";
|
|
export const RIGHTS_ALL = WasiRights.FD_DATASYNC |
|
|
WasiRights.FD_READ |
|
|
WasiRights.FD_SEEK |
|
|
WasiRights.FD_FDSTAT_SET_FLAGS |
|
|
WasiRights.FD_SYNC |
|
|
WasiRights.FD_TELL |
|
|
WasiRights.FD_WRITE |
|
|
WasiRights.FD_ADVISE |
|
|
WasiRights.FD_ALLOCATE |
|
|
WasiRights.PATH_CREATE_DIRECTORY |
|
|
WasiRights.PATH_CREATE_FILE |
|
|
WasiRights.PATH_LINK_SOURCE |
|
|
WasiRights.PATH_LINK_TARGET |
|
|
WasiRights.PATH_OPEN |
|
|
WasiRights.FD_READDIR |
|
|
WasiRights.PATH_READLINK |
|
|
WasiRights.PATH_RENAME_SOURCE |
|
|
WasiRights.PATH_RENAME_TARGET |
|
|
WasiRights.PATH_FILESTAT_GET |
|
|
WasiRights.PATH_FILESTAT_SET_SIZE |
|
|
WasiRights.PATH_FILESTAT_SET_TIMES |
|
|
WasiRights.FD_FILESTAT_GET |
|
|
WasiRights.FD_FILESTAT_SET_TIMES |
|
|
WasiRights.FD_FILESTAT_SET_SIZE |
|
|
WasiRights.PATH_SYMLINK |
|
|
WasiRights.PATH_UNLINK_FILE |
|
|
WasiRights.PATH_REMOVE_DIRECTORY |
|
|
WasiRights.POLL_FD_READWRITE |
|
|
WasiRights.SOCK_SHUTDOWN |
|
|
WasiRights.SOCK_ACCEPT;
|
|
export const BLOCK_DEVICE_BASE = RIGHTS_ALL;
|
|
export const BLOCK_DEVICE_INHERITING = RIGHTS_ALL;
|
|
export const CHARACTER_DEVICE_BASE = RIGHTS_ALL;
|
|
export const CHARACTER_DEVICE_INHERITING = RIGHTS_ALL;
|
|
export const REGULAR_FILE_BASE = WasiRights.FD_DATASYNC |
|
|
WasiRights.FD_READ |
|
|
WasiRights.FD_SEEK |
|
|
WasiRights.FD_FDSTAT_SET_FLAGS |
|
|
WasiRights.FD_SYNC |
|
|
WasiRights.FD_TELL |
|
|
WasiRights.FD_WRITE |
|
|
WasiRights.FD_ADVISE |
|
|
WasiRights.FD_ALLOCATE |
|
|
WasiRights.FD_FILESTAT_GET |
|
|
WasiRights.FD_FILESTAT_SET_SIZE |
|
|
WasiRights.FD_FILESTAT_SET_TIMES |
|
|
WasiRights.POLL_FD_READWRITE;
|
|
export const REGULAR_FILE_INHERITING = /*#__PURE__*/ BigInt(0);
|
|
export const DIRECTORY_BASE = WasiRights.FD_FDSTAT_SET_FLAGS |
|
|
WasiRights.FD_SYNC |
|
|
WasiRights.FD_ADVISE |
|
|
WasiRights.PATH_CREATE_DIRECTORY |
|
|
WasiRights.PATH_CREATE_FILE |
|
|
WasiRights.PATH_LINK_SOURCE |
|
|
WasiRights.PATH_LINK_TARGET |
|
|
WasiRights.PATH_OPEN |
|
|
WasiRights.FD_READDIR |
|
|
WasiRights.PATH_READLINK |
|
|
WasiRights.PATH_RENAME_SOURCE |
|
|
WasiRights.PATH_RENAME_TARGET |
|
|
WasiRights.PATH_FILESTAT_GET |
|
|
WasiRights.PATH_FILESTAT_SET_SIZE |
|
|
WasiRights.PATH_FILESTAT_SET_TIMES |
|
|
WasiRights.FD_FILESTAT_GET |
|
|
WasiRights.FD_FILESTAT_SET_TIMES |
|
|
WasiRights.PATH_SYMLINK |
|
|
WasiRights.PATH_UNLINK_FILE |
|
|
WasiRights.PATH_REMOVE_DIRECTORY |
|
|
WasiRights.POLL_FD_READWRITE;
|
|
export const DIRECTORY_INHERITING = DIRECTORY_BASE | REGULAR_FILE_BASE;
|
|
export const SOCKET_BASE = (WasiRights.FD_READ |
|
|
WasiRights.FD_FDSTAT_SET_FLAGS |
|
|
WasiRights.FD_WRITE |
|
|
WasiRights.FD_FILESTAT_GET |
|
|
WasiRights.POLL_FD_READWRITE |
|
|
WasiRights.SOCK_SHUTDOWN);
|
|
export const SOCKET_INHERITING = RIGHTS_ALL;
|
|
export const TTY_BASE = WasiRights.FD_READ |
|
|
WasiRights.FD_FDSTAT_SET_FLAGS |
|
|
WasiRights.FD_WRITE |
|
|
WasiRights.FD_FILESTAT_GET |
|
|
WasiRights.POLL_FD_READWRITE;
|
|
export const TTY_INHERITING = /*#__PURE__*/ BigInt(0);
|
|
export function getRights(stdio, fd, flags, type) {
|
|
const ret = {
|
|
base: BigInt(0),
|
|
inheriting: BigInt(0)
|
|
};
|
|
if (type === WasiFileType.UNKNOWN) {
|
|
throw new WasiError('Unknown file type', WasiErrno.EINVAL);
|
|
}
|
|
switch (type) {
|
|
case WasiFileType.REGULAR_FILE:
|
|
ret.base = REGULAR_FILE_BASE;
|
|
ret.inheriting = REGULAR_FILE_INHERITING;
|
|
break;
|
|
case WasiFileType.DIRECTORY:
|
|
ret.base = DIRECTORY_BASE;
|
|
ret.inheriting = DIRECTORY_INHERITING;
|
|
break;
|
|
case WasiFileType.SOCKET_STREAM:
|
|
case WasiFileType.SOCKET_DGRAM:
|
|
ret.base = SOCKET_BASE;
|
|
ret.inheriting = SOCKET_INHERITING;
|
|
break;
|
|
case WasiFileType.CHARACTER_DEVICE:
|
|
if (stdio.indexOf(fd) !== -1) {
|
|
ret.base = TTY_BASE;
|
|
ret.inheriting = TTY_INHERITING;
|
|
}
|
|
else {
|
|
ret.base = CHARACTER_DEVICE_BASE;
|
|
ret.inheriting = CHARACTER_DEVICE_INHERITING;
|
|
}
|
|
break;
|
|
case WasiFileType.BLOCK_DEVICE:
|
|
ret.base = BLOCK_DEVICE_BASE;
|
|
ret.inheriting = BLOCK_DEVICE_INHERITING;
|
|
break;
|
|
default:
|
|
ret.base = BigInt(0);
|
|
ret.inheriting = BigInt(0);
|
|
}
|
|
/* Disable read/write bits depending on access mode. */
|
|
const read_or_write_only = flags & (0 | 1 | 2);
|
|
if (read_or_write_only === 0) {
|
|
ret.base &= ~WasiRights.FD_WRITE;
|
|
}
|
|
else if (read_or_write_only === 1) {
|
|
ret.base &= ~WasiRights.FD_READ;
|
|
}
|
|
return ret;
|
|
}
|