| Server IP : 127.0.0.2 / Your IP : 3.137.177.255 Web Server : Apache/2.4.18 (Ubuntu) System : User : www-data ( ) PHP Version : 7.0.33-0ubuntu0.16.04.16 Disable Function : disk_free_space,disk_total_space,diskfreespace,dl,exec,fpaththru,getmyuid,getmypid,highlight_file,ignore_user_abord,leak,listen,link,opcache_get_configuration,opcache_get_status,passthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,php_uname,phpinfo,posix_ctermid,posix_getcwd,posix_getegid,posix_geteuid,posix_getgid,posix_getgrgid,posix_getgrnam,posix_getgroups,posix_getlogin,posix_getpgid,posix_getpgrp,posix_getpid,posix,_getppid,posix_getpwnam,posix_getpwuid,posix_getrlimit,posix_getsid,posix_getuid,posix_isatty,posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid,posix_setpgid,posix_setsid,posix_setuid,posix_times,posix_ttyname,posix_uname,pclose,popen,proc_open,proc_close,proc_get_status,proc_nice,proc_terminate,shell_exec,source,show_source,system,virtual MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/lib/nodejs/npm/lib/utils/ |
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var crypto = require('crypto')
var resolve = require('path').resolve
var lockfile = require('lockfile')
var log = require('npmlog')
var npm = require('../npm.js')
var correctMkdir = require('../utils/correct-mkdir.js')
var installLocks = {}
function lockFileName (base, name) {
var c = name.replace(/[^a-zA-Z0-9]+/g, '-').replace(/^-+|-+$/g, '')
var p = resolve(base, name)
var h = crypto.createHash('sha1').update(p).digest('hex')
var l = resolve(npm.cache, '_locks')
return resolve(l, c.substr(0, 24) + '-' + h.substr(0, 16) + '.lock')
}
function lock (base, name, cb) {
var lockDir = resolve(npm.cache, '_locks')
correctMkdir(lockDir, function (er) {
if (er) return cb(er)
var opts = {
stale: npm.config.get('cache-lock-stale'),
retries: npm.config.get('cache-lock-retries'),
wait: npm.config.get('cache-lock-wait')
}
var lf = lockFileName(base, name)
lockfile.lock(lf, opts, function (er) {
if (er) log.warn('locking', lf, 'failed', er)
if (!er) {
log.verbose('lock', 'using', lf, 'for', resolve(base, name))
installLocks[lf] = true
}
cb(er)
})
})
}
function unlock (base, name, cb) {
var lf = lockFileName(base, name)
var locked = installLocks[lf]
if (locked === false) {
return process.nextTick(cb)
} else if (locked === true) {
lockfile.unlock(lf, function (er) {
if (er) {
log.warn('unlocking', lf, 'failed', er)
} else {
installLocks[lf] = false
log.verbose('unlock', 'done using', lf, 'for', resolve(base, name))
}
cb(er)
})
} else {
var notLocked = new Error(
'Attempt to unlock ' + resolve(base, name) + ", which hasn't been locked"
)
notLocked.code = 'ENOTLOCKED'
throw notLocked
}
}
module.exports = {
lock: lock,
unlock: unlock
}