Support for getStatvfs

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 All notable changes to the Zowe Installer will be documented in this file.
 
+## `3.0.1`
+- Enhancement: new javascript funtion `getStatvfs()` to obtain information about the file sysytem [#3994](https://github.com/zowe/zowe-install-packaging/pull/3994)
+
 ## `3.0.0`
 
 ### Breaking Changes

bin/libs/zos-fs.ts

@@ -116,3 +116,32 @@ export function ensureFileEncoding(file: string, expectedSample: string, expecte
     common.printTrace(`- Failed to detect encoding of ${file}.`);
   }
 }
+
+export type fileSystemFlagsReturn = {
+  rc: number,
+  exported?: boolean,
+  rdonly?: boolean,
+  nosuid?: boolean,
+  nosecurity?: boolean,
+};
+
+export function getFileSystemFlags(path: string): fileSystemFlagsReturn {
+  const ST_OEEXPORTED = 0x40000000
+  const ST_RDONLY     = 0x00000001
+  const ST_NOSUID     = 0x00000002
+  const ST_NOSECURITY = 0x00000004
+  let flags : fileSystemFlagsReturn = { rc: 1 };
+  if (path) {
+    const result = zos.getStatvfs(path);
+    if (result[1] == 0) {
+        flags = {
+          rc: 0,
+          exported: !!(result[0].flag & ST_OEEXPORTED),
+          rdonly: !!(result[0].flag & ST_RDONLY),
+          nosuid: !!(result[0].flag & ST_NOSUID),
+          nosecurity: !!(result[0].flag & ST_NOSECURITY)
+        }
+    }
+  }
+  return flags;
+}

build/zwe/types/@qjstypes/zos.d.ts

@@ -26,10 +26,29 @@ export type ZStat = {
     ccsid: number;
 };
 
+export type Statvfs = {
+  bsize: number;
+  blocks: number;
+  bavail: number;
+  fsid: number;
+  flag: number;
+  frsize: number;
+  bfree: number;
+  files: number;
+  ffree: number;
+  favail: number;
+  namemax: number;
+  OEmaxfilesizehw: number;
+  OEmaxfilesizelw: number;
+  OEusedspace: number;
+  OEinvarsec: number;
+}
+
 export function getEsm(): string;
 export function getZosVersion(): number;
 export function changeTag(path:string, ccsid:number):number;
 export function changeExtAttr(path: string, extattr:number, onOff:boolean):number;
 export function zstat(path:string):[ZStat, number];
+export function getStatvfs(path: string): [Statvfs, number];
 export var EXTATTR_SHARELIB:number;
 export var EXTATTR_PROGCTL:number;