chushihua

node_modules/cacache/lib/util/fix-owner.js

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+'use strict'
+
+const BB = require('bluebird')
+
+const chownr = BB.promisify(require('chownr'))
+const mkdirp = BB.promisify(require('mkdirp'))
+const inflight = require('promise-inflight')
+
+module.exports.chownr = fixOwner
+function fixOwner (filepath, uid, gid) {
+  if (!process.getuid) {
+    // This platform doesn't need ownership fixing
+    return BB.resolve()
+  }
+  if (typeof uid !== 'number' && typeof gid !== 'number') {
+    // There's no permissions override. Nothing to do here.
+    return BB.resolve()
+  }
+  if ((typeof uid === 'number' && process.getuid() === uid) &&
+      (typeof gid === 'number' && process.getgid() === gid)) {
+    // No need to override if it's already what we used.
+    return BB.resolve()
+  }
+  return inflight(
+    'fixOwner: fixing ownership on ' + filepath,
+    () => chownr(
+      filepath,
+      typeof uid === 'number' ? uid : process.getuid(),
+      typeof gid === 'number' ? gid : process.getgid()
+    ).catch({code: 'ENOENT'}, () => null)
+  )
+}
+
+module.exports.mkdirfix = mkdirfix
+function mkdirfix (p, uid, gid, cb) {
+  return mkdirp(p).then(made => {
+    if (made) {
+      return fixOwner(made, uid, gid).then(() => made)
+    }
+  }).catch({code: 'EEXIST'}, () => {
+    // There's a race in mkdirp!
+    return fixOwner(p, uid, gid).then(() => null)
+  })
+}