Improve isolation, execution limits and execution metrics by using Isolate (#683)

* Initial: use Isolate for isolation

* Continue: use Isolate for isolation

* Bug fixes

* timeout is wall-time for backward compatibility

* Documentation, signal names, reported time in ms

* Report memory usage in bytes

* Add privileged flags where needed

* Remove tmpfs

* Remove tmpfs

* Fix package installation

* Fix path, fix Zig: CRLF -> LF

api/src/globals.js

@@ -7,14 +7,78 @@ const platform = `${is_docker() ? 'docker' : 'baremetal'}-${fs
     .split('\n')
     .find(x => x.startsWith('ID'))
     .replace('ID=', '')}`;
+const SIGNALS = {
+    1: 'SIGHUP',
+    2: 'SIGINT',
+    3: 'SIGQUIT',
+    4: 'SIGILL',
+    5: 'SIGTRAP',
+    6: 'SIGABRT',
+    7: 'SIGBUS',
+    8: 'SIGFPE',
+    9: 'SIGKILL',
+    10: 'SIGUSR1',
+    11: 'SIGSEGV',
+    12: 'SIGUSR2',
+    13: 'SIGPIPE',
+    14: 'SIGALRM',
+    15: 'SIGTERM',
+    16: 'SIGSTKFLT',
+    17: 'SIGCHLD',
+    18: 'SIGCONT',
+    19: 'SIGSTOP',
+    20: 'SIGTSTP',
+    21: 'SIGTTIN',
+    22: 'SIGTTOU',
+    23: 'SIGURG',
+    24: 'SIGXCPU',
+    25: 'SIGXFSZ',
+    26: 'SIGVTALRM',
+    27: 'SIGPROF',
+    28: 'SIGWINCH',
+    29: 'SIGIO',
+    30: 'SIGPWR',
+    31: 'SIGSYS',
+    34: 'SIGRTMIN',
+    35: 'SIGRTMIN+1',
+    36: 'SIGRTMIN+2',
+    37: 'SIGRTMIN+3',
+    38: 'SIGRTMIN+4',
+    39: 'SIGRTMIN+5',
+    40: 'SIGRTMIN+6',
+    41: 'SIGRTMIN+7',
+    42: 'SIGRTMIN+8',
+    43: 'SIGRTMIN+9',
+    44: 'SIGRTMIN+10',
+    45: 'SIGRTMIN+11',
+    46: 'SIGRTMIN+12',
+    47: 'SIGRTMIN+13',
+    48: 'SIGRTMIN+14',
+    49: 'SIGRTMIN+15',
+    50: 'SIGRTMAX-14',
+    51: 'SIGRTMAX-13',
+    52: 'SIGRTMAX-12',
+    53: 'SIGRTMAX-11',
+    54: 'SIGRTMAX-10',
+    55: 'SIGRTMAX-9',
+    56: 'SIGRTMAX-8',
+    57: 'SIGRTMAX-7',
+    58: 'SIGRTMAX-6',
+    59: 'SIGRTMAX-5',
+    60: 'SIGRTMAX-4',
+    61: 'SIGRTMAX-3',
+    62: 'SIGRTMAX-2',
+    63: 'SIGRTMAX-1',
+    64: 'SIGRTMAX',
+};
 
 module.exports = {
     data_directories: {
         packages: 'packages',
-        jobs: 'jobs',
     },
     version: require('../package.json').version,
     platform,
     pkg_installed_file: '.ppman-installed', //Used as indication for if a package was installed
     clean_directories: ['/dev/shm', '/run/lock', '/tmp', '/var/tmp'],
+    SIGNALS,
 };