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iEval git - gruntmaster-daemon.git/blob - gruntmaster-exec
10 # Internal server error
22 use BSD
:: Resource qw
/setrlimit RLIMIT_AS RLIMIT_FSIZE RLIMIT_NPROC/ ;
23 use IPC
:: Signal qw
/sig_name sig_num/ ;
28 use Text
:: ParseWords qw
/shellwords/ ;
29 use Time
:: HiRes qw
/alarm/ ;
31 my ( @fds , $timeout , $mlimit , $olimit , $sudo , $keep_stderr );
35 "timeout=f" => \
$timeout ,
36 "mlimit=i" => \
$mlimit ,
37 "olimit=i" => \
$olimit ,
38 "keep-stderr!" => \
$keep_stderr ,
44 sysread STDIN
, $data , 4096 and syswrite STDOUT
, "recvd \n " until $data =~ /done/ ;
45 syswrite STDOUT
, 'done' ;
50 vec ( $rin , fileno STDIN
, 1 ) = 1 ;
51 syswrite STDOUT
, "data \n " until select $rout = $rin , undef , undef , 0.05 ;
52 syswrite STDOUT
, 'done' ;
54 sysread STDIN
, $data , 4096 until $data =~ /done/ ;
58 $ARGV [ 0 ] =~ /prog/ ? test_pipe_read
: test_pipe_write
61 my $killuser = $ENV { GRUNTMASTER_KILL_USER
};
63 @sudo = ( shellwords
( $ENV { GRUNTMASTER_SUDO
}), '--' ) if $ENV { GRUNTMASTER_SUDO
} && $sudo ;
64 undef $mlimit if @sudo ; # sudo wants a lot of address space
66 my $ret = fork // die 'Cannot fork' ;
68 my ( $tle , $child_ready );
69 local $SIG { USR1
} = sub { $child_ready = 1 };
70 sleep 3 ; # Wait for ready signal (SIGUSR1)
71 unless ( $child_ready ) {
73 exit ! say ERR
, " \n No response from gruntmaster-exec child" ;
75 local $SIG { ALRM
} = sub {
77 system @sudo , 'pkill' , '-KILL' , '-u' , $killuser ;
83 alarm ( $timeout || 10 );
88 $ ?
= $ ?
< 128 || $ ?
> 128 + 32 ?
($ ?
<< 8 ) : $ ?
- 128 ;
91 my $signame = sig_name
$sig ;
92 exit ! say TLE
, " \n Time Limit Exceeded" if $tle ;
93 exit ! say OLE
, " \n Output Limit Exceeded" if $sig && $signame eq 'XFSZ' ;
94 exit ! say DIED
, " \n Crash (SIG $signame )" if $sig && ( $signame ne 'PIPE' || $ARGV [ 0 ] !~ /prog/ );
95 exit ! say NZX
, " \n Non-zero exit status: " . ($ ?
>> 8 ) if $ ?
>> 8 ;
96 exit ! say AC
, " \n All OK" ;
99 POSIX
:: close 2 unless $keep_stderr ;
100 POSIX
:: close $_ for 0 , 1 , 3 .. $^ F
;
101 for my $fdstring ( @fds ) {
102 my ( $fd , $file ) = split ' ' , $fdstring , 2 ;
103 open my $fh , $file or die $!;
104 my $oldfd = fileno $fh ;
106 POSIX
:: dup2
$oldfd , $fd or die $!;
107 POSIX
:: close $oldfd or die $!;
110 test_pipes
if grep /tty|fifo/ , @fds ;
111 my $nproc = $killuser ?
15 : 1 ;
112 my $debug = $ENV { TEST_VERBOSE
};
113 %ENV = ( ONLINE_JUDGE
=> 1 , PATH
=> $ENV { PATH
}, HOME
=> $ENV { HOME
});
114 setrlimit RLIMIT_AS
, $mlimit , $mlimit or die $! if $mlimit ;
115 setrlimit RLIMIT_FSIZE
, $olimit , $olimit or die $! if $olimit ;
116 setrlimit RLIMIT_NPROC
, $nproc , $nproc or die $! if $sudo ;
117 open my $adj , '>' , '/proc/self/oom_score_adj' ;
120 unshift @ARGV , @sudo ;
121 kill USR1
=> getppid ; # Tell parent process that we're ready
122 say STDERR
"Executing: " , join ' ' , map { "' $_ '" } @ARGV if $debug ;
133 gruntmaster-exec - Gruntmaster 6000 executor
137 gruntmaster-exec 20000000 111 echo 'Hello, world!'
141 gruntmaster-exec is the script used by gruntmasterd to run programs.
143 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.
145 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.
149 Marius Gavrilescu E<lt>marius@ieval.roE<gt>
151 =head1 COPYRIGHT AND LICENSE
153 Copyright (C) 2014 by Marius Gavrilescu
155 This program is free software: you can redistribute it and/or modify
156 it under the terms of the GNU Affero General Public License as published by
157 the Free Software Foundation, either version 3 of the License, or
158 (at your option) any later version.
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