feat: init

node_modules/@tybys/wasm-util/lib/mjs/wasi/rights.mjs

@@ -0,0 +1,135 @@
+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;
+}