25a44d16f48f8635b58868a9f2c9695dab7caf45
10 # Internal server error
21 # These constants are changed by ex/makevm
22 use constant USER
=> 65534;
23 use constant GROUP
=> 65534;
25 use BSD
::Resource qw
/setrlimit RLIMIT_AS RLIMIT_FSIZE RLIMIT_NPROC/;
26 use IPC
::Signal qw
/sig_name sig_num/;
31 use Text
::ParseWords qw
/shellwords/;
32 use Time
::HiRes qw
/alarm/;
34 my (@fds, $timeout, $mlimit, $olimit, $nobody);
39 "timeout=f" => \
$timeout,
40 "mlimit=i" => \
$mlimit,
41 "olimit=i" => \
$olimit,
43 "nobody!" => \
$nobody,
46 my $killuser = $ENV{GRUNTMASTER_KILL_USER
};
48 @sudo = (shellwords
($ENV{GRUNTMASTER_SUDO
}), '--') if $ENV{GRUNTMASTER_SUDO
} && $nobody;
49 $mlimit = 1_000_000_000
if @sudo; # sudo wants a lot of address space
51 my $ret = fork // die 'Cannot fork';
54 local $SIG{ALRM
} = sub {
56 system @sudo, 'pkill', '-KILL', '-u', $killuser;
62 alarm ($timeout || 5);
67 $?
= $?
< 128 ?
($?
<< 8) : $?
- 128;
70 my $signame = sig_name
$sig;
71 exit !say TLE
, "\nTime Limit Exceeded" if $tle;
72 exit !say OLE
, "\nOutput Limit Exceeded" if $sig && $signame eq 'XFSZ';
73 exit !say DIED
, "\nCrash (SIG$signame)" if $sig && $signame ne 'PIPE';
74 exit !say NZX
, "\nNon-zero exit status: " . ($?
>> 8) if $?
>> 8;
75 exit !say AC
, "\nAll OK";
79 POSIX
::close $_ for 0 .. $^F
;
81 for my $fdstring (@fds) {
82 my ($fd, $file) = split ' ', $fdstring, 2;
83 open my $fh, $file or die $!;
84 my $oldfd = fileno $fh;
86 POSIX
::dup2
$oldfd, $fd or die $!;
87 POSIX
::close $oldfd or die $!;
90 my $nproc = $killuser ?
5 : 1;
91 %ENV = (ONLINE_JUDGE
=> 1, PATH
=> $ENV{PATH
}, HOME
=> $ENV{HOME
});
92 setrlimit RLIMIT_AS
, $mlimit, $mlimit or die $! if $mlimit;
93 setrlimit RLIMIT_FSIZE
, $olimit, $olimit or die $! if $olimit;
94 setrlimit RLIMIT_NPROC
, $nproc, $nproc or die $! if $nobody;
95 POSIX
::setgid
$nobody ?
65534 : USER
;
96 POSIX
::setuid
$nobody ?
65534 : GROUP
;
98 say STDERR
"Execing: ", join ' ', map { "'$_'" } @ARGV;
109 gruntmaster-exec - Gruntmaster 6000 executor
113 gruntmaster-exec 20000000 111 echo 'Hello, world!'
117 gruntmaster-exec is the script used by gruntmasterd to run programs.
119 The first argument is the address space limit (in bytes), the second argument is the output limit (also in bytes). The rest of the arguments are the command that should be run and its arguments.
121 gruntmaster-exec sets the resource limits, cleans the environment (except for PATH and HOME), adds the ONLINE_JUDGE environment variable with value 1, and finally C<exec>s the given command.
125 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
127 =head1 COPYRIGHT AND LICENSE
129 Copyright (C) 2014 by Marius Gavrilescu
131 This program is free software: you can redistribute it and/or modify
132 it under the terms of the GNU Affero General Public License as published by
133 the Free Software Foundation, either version 3 of the License, or
134 (at your option) any later version.
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