+++ /dev/null
-var constants = require('constants')
-
-var origCwd = process.cwd
-var cwd = null
-
-var platform = process.env.GRACEFUL_FS_PLATFORM || process.platform
-
-process.cwd = function() {
- if (!cwd)
- cwd = origCwd.call(process)
- return cwd
-}
-try {
- process.cwd()
-} catch (er) {}
-
-var chdir = process.chdir
-process.chdir = function(d) {
- cwd = null
- chdir.call(process, d)
-}
-
-module.exports = patch
-
-function patch (fs) {
- // (re-)implement some things that are known busted or missing.
-
- // lchmod, broken prior to 0.6.2
- // back-port the fix here.
- if (constants.hasOwnProperty('O_SYMLINK') &&
- process.version.match(/^v0\.6\.[0-2]|^v0\.5\./)) {
- patchLchmod(fs)
- }
-
- // lutimes implementation, or no-op
- if (!fs.lutimes) {
- patchLutimes(fs)
- }
-
- // https://github.com/isaacs/node-graceful-fs/issues/4
- // Chown should not fail on einval or eperm if non-root.
- // It should not fail on enosys ever, as this just indicates
- // that a fs doesn't support the intended operation.
-
- fs.chown = chownFix(fs.chown)
- fs.fchown = chownFix(fs.fchown)
- fs.lchown = chownFix(fs.lchown)
-
- fs.chmod = chmodFix(fs.chmod)
- fs.fchmod = chmodFix(fs.fchmod)
- fs.lchmod = chmodFix(fs.lchmod)
-
- fs.chownSync = chownFixSync(fs.chownSync)
- fs.fchownSync = chownFixSync(fs.fchownSync)
- fs.lchownSync = chownFixSync(fs.lchownSync)
-
- fs.chmodSync = chmodFixSync(fs.chmodSync)
- fs.fchmodSync = chmodFixSync(fs.fchmodSync)
- fs.lchmodSync = chmodFixSync(fs.lchmodSync)
-
- fs.stat = statFix(fs.stat)
- fs.fstat = statFix(fs.fstat)
- fs.lstat = statFix(fs.lstat)
-
- fs.statSync = statFixSync(fs.statSync)
- fs.fstatSync = statFixSync(fs.fstatSync)
- fs.lstatSync = statFixSync(fs.lstatSync)
-
- // if lchmod/lchown do not exist, then make them no-ops
- if (!fs.lchmod) {
- fs.lchmod = function (path, mode, cb) {
- if (cb) process.nextTick(cb)
- }
- fs.lchmodSync = function () {}
- }
- if (!fs.lchown) {
- fs.lchown = function (path, uid, gid, cb) {
- if (cb) process.nextTick(cb)
- }
- fs.lchownSync = function () {}
- }
-
- // on Windows, A/V software can lock the directory, causing this
- // to fail with an EACCES or EPERM if the directory contains newly
- // created files. Try again on failure, for up to 60 seconds.
-
- // Set the timeout this long because some Windows Anti-Virus, such as Parity
- // bit9, may lock files for up to a minute, causing npm package install
- // failures. Also, take care to yield the scheduler. Windows scheduling gives
- // CPU to a busy looping process, which can cause the program causing the lock
- // contention to be starved of CPU by node, so the contention doesn't resolve.
- if (platform === "win32") {
- fs.rename = (function (fs$rename) { return function (from, to, cb) {
- var start = Date.now()
- var backoff = 0;
- fs$rename(from, to, function CB (er) {
- if (er
- && (er.code === "EACCES" || er.code === "EPERM")
- && Date.now() - start < 60000) {
- setTimeout(function() {
- fs.stat(to, function (stater, st) {
- if (stater && stater.code === "ENOENT")
- fs$rename(from, to, CB);
- else
- cb(er)
- })
- }, backoff)
- if (backoff < 100)
- backoff += 10;
- return;
- }
- if (cb) cb(er)
- })
- }})(fs.rename)
- }
-
- // if read() returns EAGAIN, then just try it again.
- fs.read = (function (fs$read) {
- function read (fd, buffer, offset, length, position, callback_) {
- var callback
- if (callback_ && typeof callback_ === 'function') {
- var eagCounter = 0
- callback = function (er, _, __) {
- if (er && er.code === 'EAGAIN' && eagCounter < 10) {
- eagCounter ++
- return fs$read.call(fs, fd, buffer, offset, length, position, callback)
- }
- callback_.apply(this, arguments)
- }
- }
- return fs$read.call(fs, fd, buffer, offset, length, position, callback)
- }
-
- // This ensures `util.promisify` works as it does for native `fs.read`.
- read.__proto__ = fs$read
- return read
- })(fs.read)
-
- fs.readSync = (function (fs$readSync) { return function (fd, buffer, offset, length, position) {
- var eagCounter = 0
- while (true) {
- try {
- return fs$readSync.call(fs, fd, buffer, offset, length, position)
- } catch (er) {
- if (er.code === 'EAGAIN' && eagCounter < 10) {
- eagCounter ++
- continue
- }
- throw er
- }
- }
- }})(fs.readSync)
-
- function patchLchmod (fs) {
- fs.lchmod = function (path, mode, callback) {
- fs.open( path
- , constants.O_WRONLY | constants.O_SYMLINK
- , mode
- , function (err, fd) {
- if (err) {
- if (callback) callback(err)
- return
- }
- // prefer to return the chmod error, if one occurs,
- // but still try to close, and report closing errors if they occur.
- fs.fchmod(fd, mode, function (err) {
- fs.close(fd, function(err2) {
- if (callback) callback(err || err2)
- })
- })
- })
- }
-
- fs.lchmodSync = function (path, mode) {
- var fd = fs.openSync(path, constants.O_WRONLY | constants.O_SYMLINK, mode)
-
- // prefer to return the chmod error, if one occurs,
- // but still try to close, and report closing errors if they occur.
- var threw = true
- var ret
- try {
- ret = fs.fchmodSync(fd, mode)
- threw = false
- } finally {
- if (threw) {
- try {
- fs.closeSync(fd)
- } catch (er) {}
- } else {
- fs.closeSync(fd)
- }
- }
- return ret
- }
- }
-
- function patchLutimes (fs) {
- if (constants.hasOwnProperty("O_SYMLINK")) {
- fs.lutimes = function (path, at, mt, cb) {
- fs.open(path, constants.O_SYMLINK, function (er, fd) {
- if (er) {
- if (cb) cb(er)
- return
- }
- fs.futimes(fd, at, mt, function (er) {
- fs.close(fd, function (er2) {
- if (cb) cb(er || er2)
- })
- })
- })
- }
-
- fs.lutimesSync = function (path, at, mt) {
- var fd = fs.openSync(path, constants.O_SYMLINK)
- var ret
- var threw = true
- try {
- ret = fs.futimesSync(fd, at, mt)
- threw = false
- } finally {
- if (threw) {
- try {
- fs.closeSync(fd)
- } catch (er) {}
- } else {
- fs.closeSync(fd)
- }
- }
- return ret
- }
-
- } else {
- fs.lutimes = function (_a, _b, _c, cb) { if (cb) process.nextTick(cb) }
- fs.lutimesSync = function () {}
- }
- }
-
- function chmodFix (orig) {
- if (!orig) return orig
- return function (target, mode, cb) {
- return orig.call(fs, target, mode, function (er) {
- if (chownErOk(er)) er = null
- if (cb) cb.apply(this, arguments)
- })
- }
- }
-
- function chmodFixSync (orig) {
- if (!orig) return orig
- return function (target, mode) {
- try {
- return orig.call(fs, target, mode)
- } catch (er) {
- if (!chownErOk(er)) throw er
- }
- }
- }
-
-
- function chownFix (orig) {
- if (!orig) return orig
- return function (target, uid, gid, cb) {
- return orig.call(fs, target, uid, gid, function (er) {
- if (chownErOk(er)) er = null
- if (cb) cb.apply(this, arguments)
- })
- }
- }
-
- function chownFixSync (orig) {
- if (!orig) return orig
- return function (target, uid, gid) {
- try {
- return orig.call(fs, target, uid, gid)
- } catch (er) {
- if (!chownErOk(er)) throw er
- }
- }
- }
-
- function statFix (orig) {
- if (!orig) return orig
- // Older versions of Node erroneously returned signed integers for
- // uid + gid.
- return function (target, options, cb) {
- if (typeof options === 'function') {
- cb = options
- options = null
- }
- function callback (er, stats) {
- if (stats) {
- if (stats.uid < 0) stats.uid += 0x100000000
- if (stats.gid < 0) stats.gid += 0x100000000
- }
- if (cb) cb.apply(this, arguments)
- }
- return options ? orig.call(fs, target, options, callback)
- : orig.call(fs, target, callback)
- }
- }
-
- function statFixSync (orig) {
- if (!orig) return orig
- // Older versions of Node erroneously returned signed integers for
- // uid + gid.
- return function (target, options) {
- var stats = options ? orig.call(fs, target, options)
- : orig.call(fs, target)
- if (stats.uid < 0) stats.uid += 0x100000000
- if (stats.gid < 0) stats.gid += 0x100000000
- return stats;
- }
- }
-
- // ENOSYS means that the fs doesn't support the op. Just ignore
- // that, because it doesn't matter.
- //
- // if there's no getuid, or if getuid() is something other
- // than 0, and the error is EINVAL or EPERM, then just ignore
- // it.
- //
- // This specific case is a silent failure in cp, install, tar,
- // and most other unix tools that manage permissions.
- //
- // When running as root, or if other types of errors are
- // encountered, then it's strict.
- function chownErOk (er) {
- if (!er)
- return true
-
- if (er.code === "ENOSYS")
- return true
-
- var nonroot = !process.getuid || process.getuid() !== 0
- if (nonroot) {
- if (er.code === "EINVAL" || er.code === "EPERM")
- return true
- }
-
- return false
- }
-}
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