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Diffstat (limited to 'node_modules/graceful-fs/polyfills.js')
| -rw-r--r-- | node_modules/graceful-fs/polyfills.js | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/node_modules/graceful-fs/polyfills.js b/node_modules/graceful-fs/polyfills.js deleted file mode 100644 index 46dea36..0000000 --- a/node_modules/graceful-fs/polyfills.js +++ /dev/null @@ -1,355 +0,0 @@ -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) {} - -// This check is needed until node.js 12 is required -if (typeof process.chdir === 'function') { - var chdir = process.chdir - process.chdir = function (d) { - cwd = null - chdir.call(process, d) - } - if (Object.setPrototypeOf) Object.setPrototypeOf(process.chdir, chdir) -} - -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.chmod && !fs.lchmod) { - fs.lchmod = function (path, mode, cb) { - if (cb) process.nextTick(cb) - } - fs.lchmodSync = function () {} - } - if (fs.chown && !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 = typeof fs.rename !== 'function' ? fs.rename - : (function (fs$rename) { - function rename (from, to, cb) { - var start = Date.now() - var backoff = 0; - fs$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$rename(from, to, CB); - else - cb(er) - }) - }, backoff) - if (backoff < 100) - backoff += 10; - return; - } - if (cb) cb(er) - }) - } - if (Object.setPrototypeOf) Object.setPrototypeOf(rename, fs$rename) - return rename - })(fs.rename) - } - - // if read() returns EAGAIN, then just try it again. - fs.read = typeof fs.read !== 'function' ? 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$read.call(fs, fd, buffer, offset, length, position, callback) - } - - // This ensures `util.promisify` works as it does for native `fs.read`. - if (Object.setPrototypeOf) Object.setPrototypeOf(read, fs$read) - return read - })(fs.read) - - fs.readSync = typeof fs.readSync !== 'function' ? 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.futimes) { - 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 if (fs.futimes) { - 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) { - 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 - } -} |