Updates

kernel/bin/getconf

@@ -60,13 +60,68 @@ function barePosixBlocks(size) {
   return Math.ceil(Number(size) / 512) || 0
 }
 
+/**
+ * Subset of POSIX.1-2017 getconf — fixed values for Bare OS (no host sysconf).
+ * Unknown names exit with status 1 (matches common getconf for invalid var).
+ */
+
+const CONF = {
+  PATH_MAX: '4096',
+  NAME_MAX: '255',
+  /** POSIX minimum for ARG_MAX; Bare uses a conservative cap for runBinCommand argv. */
+  _POSIX_ARG_MAX: '4096',
+  ARG_MAX: '262144',
+  LINE_MAX: '2048',
+  /** POSIX.1-2008 */
+  _POSIX_VERSION: '200809',
+  _POSIX2_VERSION: '200809',
+  NGROUPS_MAX: '32',
+  OPEN_MAX: '256',
+  STREAM_MAX: '256',
+  TZNAME_MAX: '32',
+  _POSIX_CHOWN_RESTRICTED: '1',
+  _POSIX_NO_TRUNC: '1',
+  _POSIX_VDISABLE: '0',
+  _POSIX_JOB_CONTROL: '0',
+  _POSIX_SAVED_IDS: '0',
+  /** Bare shell line length (reasonable REPL limit, not a hard kernel cap). */
+  BARE_OS_INPUT_LINE_MAX: '8192'
+}
+
 async function run(ctx, argv) {
-  const name = argv[1]
+  const args = argv.slice(1).filter((a) => a !== '--')
+  let dumpAll = false
+  let name = null
+  for (const a of args) {
+    if (a === '-a') dumpAll = true
+    else if (!a.startsWith('-')) name = a
+    else {
+      ctx.console.error('getconf: unknown option: ' + a)
+      ctx.exitCode = 1
+      return
+    }
+  }
+
+  if (dumpAll) {
+    for (const k of Object.keys(CONF).sort()) {
+      ctx.console.log(k + '\n' + CONF[k])
+    }
+    ctx.exitCode = 0
+    return
+  }
+
   if (!name) {
-    ctx.console.error('usage: getconf VARIABLE_NAME')
+    ctx.console.error('usage: getconf [-a] system_var')
     ctx.exitCode = 1
     return
   }
-  ctx.console.error('getconf: not implemented on Bare OS (no full sysconf path): ' + name)
+
+  if (Object.prototype.hasOwnProperty.call(CONF, name)) {
+    ctx.console.log(CONF[name])
+    ctx.exitCode = 0
+    return
+  }
+
+  ctx.console.error('getconf: ' + name + ': unknown variable')
   ctx.exitCode = 1
 }