| 1 | #!./perl |
| 2 | |
| 3 | BEGIN{ |
| 4 | # Don't do anything if POSIX is missing, or sigaction missing. |
| 5 | use Config; |
| 6 | eval 'use POSIX'; |
| 7 | if($@ || $^O eq 'MSWin32' || $^O eq 'NetWare' || $^O eq 'dos' || |
| 8 | $^O eq 'MacOS' || ($^O eq 'VMS' && !$Config{'d_sigaction'})) { |
| 9 | print "1..0\n"; |
| 10 | exit 0; |
| 11 | } |
| 12 | } |
| 13 | |
| 14 | use Test::More tests => 31; |
| 15 | |
| 16 | use strict; |
| 17 | use vars qw/$bad $bad7 $ok10 $bad18 $ok/; |
| 18 | |
| 19 | $^W=1; |
| 20 | |
| 21 | sub IGNORE { |
| 22 | $bad7=1; |
| 23 | } |
| 24 | |
| 25 | sub DEFAULT { |
| 26 | $bad18=1; |
| 27 | } |
| 28 | |
| 29 | sub foo { |
| 30 | $ok=1; |
| 31 | } |
| 32 | |
| 33 | my $newaction=POSIX::SigAction->new('::foo', new POSIX::SigSet(SIGUSR1), 0); |
| 34 | my $oldaction=POSIX::SigAction->new('::bar', new POSIX::SigSet(), 0); |
| 35 | |
| 36 | { |
| 37 | my $bad; |
| 38 | local($SIG{__WARN__})=sub { $bad=1; }; |
| 39 | sigaction(SIGHUP, $newaction, $oldaction); |
| 40 | ok(!$bad, "no warnings"); |
| 41 | } |
| 42 | |
| 43 | ok($oldaction->{HANDLER} eq 'DEFAULT' || |
| 44 | $oldaction->{HANDLER} eq 'IGNORE', $oldaction->{HANDLER}); |
| 45 | |
| 46 | is($SIG{HUP}, '::foo'); |
| 47 | |
| 48 | sigaction(SIGHUP, $newaction, $oldaction); |
| 49 | is($oldaction->{HANDLER}, '::foo'); |
| 50 | |
| 51 | ok($oldaction->{MASK}->ismember(SIGUSR1), "SIGUSR1 ismember MASK"); |
| 52 | |
| 53 | SKIP: { |
| 54 | skip("sigaction() thinks different in $^O", 1) |
| 55 | if $^O eq 'linux' || $^O eq 'unicos'; |
| 56 | is($oldaction->{FLAGS}, 0); |
| 57 | } |
| 58 | |
| 59 | $newaction=POSIX::SigAction->new('IGNORE'); |
| 60 | sigaction(SIGHUP, $newaction); |
| 61 | kill 'HUP', $$; |
| 62 | ok(!$bad, "SIGHUP ignored"); |
| 63 | |
| 64 | is($SIG{HUP}, 'IGNORE'); |
| 65 | sigaction(SIGHUP, POSIX::SigAction->new('DEFAULT')); |
| 66 | is($SIG{HUP}, 'DEFAULT'); |
| 67 | |
| 68 | $newaction=POSIX::SigAction->new(sub { $ok10=1; }); |
| 69 | sigaction(SIGHUP, $newaction); |
| 70 | { |
| 71 | local($^W)=0; |
| 72 | kill 'HUP', $$; |
| 73 | } |
| 74 | ok($ok10, "SIGHUP handler called"); |
| 75 | |
| 76 | is(ref($SIG{HUP}), 'CODE'); |
| 77 | |
| 78 | sigaction(SIGHUP, POSIX::SigAction->new('::foo')); |
| 79 | # Make sure the signal mask gets restored after sigaction croak()s. |
| 80 | eval { |
| 81 | my $act=POSIX::SigAction->new('::foo'); |
| 82 | delete $act->{HANDLER}; |
| 83 | sigaction(SIGINT, $act); |
| 84 | }; |
| 85 | kill 'HUP', $$; |
| 86 | ok($ok, "signal mask gets restored after croak"); |
| 87 | |
| 88 | undef $ok; |
| 89 | # Make sure the signal mask gets restored after sigaction returns early. |
| 90 | my $x=defined sigaction(SIGKILL, $newaction, $oldaction); |
| 91 | kill 'HUP', $$; |
| 92 | ok(!$x && $ok, "signal mask gets restored after early return"); |
| 93 | |
| 94 | $SIG{HUP}=sub {}; |
| 95 | sigaction(SIGHUP, $newaction, $oldaction); |
| 96 | is(ref($oldaction->{HANDLER}), 'CODE'); |
| 97 | |
| 98 | eval { |
| 99 | sigaction(SIGHUP, undef, $oldaction); |
| 100 | }; |
| 101 | ok(!$@, "undef for new action"); |
| 102 | |
| 103 | eval { |
| 104 | sigaction(SIGHUP, 0, $oldaction); |
| 105 | }; |
| 106 | ok(!$@, "zero for new action"); |
| 107 | |
| 108 | eval { |
| 109 | sigaction(SIGHUP, bless({},'Class'), $oldaction); |
| 110 | }; |
| 111 | ok($@, "any object not good as new action"); |
| 112 | |
| 113 | SKIP: { |
| 114 | skip("SIGCONT not trappable in $^O", 1) |
| 115 | if ($^O eq 'VMS'); |
| 116 | $newaction=POSIX::SigAction->new(sub { $ok10=1; }); |
| 117 | if (eval { SIGCONT; 1 }) { |
| 118 | sigaction(SIGCONT, POSIX::SigAction->new('DEFAULT')); |
| 119 | { |
| 120 | local($^W)=0; |
| 121 | kill 'CONT', $$; |
| 122 | } |
| 123 | } |
| 124 | ok(!$bad18, "SIGCONT trappable"); |
| 125 | } |
| 126 | |
| 127 | { |
| 128 | local $SIG{__WARN__} = sub { }; # Just suffer silently. |
| 129 | |
| 130 | my $hup20; |
| 131 | my $hup21; |
| 132 | |
| 133 | sub hup20 { $hup20++ } |
| 134 | sub hup21 { $hup21++ } |
| 135 | |
| 136 | sigaction("FOOBAR", $newaction); |
| 137 | ok(1, "no coredump, still alive"); |
| 138 | |
| 139 | $newaction = POSIX::SigAction->new("hup20"); |
| 140 | sigaction("SIGHUP", $newaction); |
| 141 | kill "HUP", $$; |
| 142 | is($hup20, 1); |
| 143 | |
| 144 | $newaction = POSIX::SigAction->new("hup21"); |
| 145 | sigaction("HUP", $newaction); |
| 146 | kill "HUP", $$; |
| 147 | is ($hup21, 1); |
| 148 | } |
| 149 | |
| 150 | # "safe" attribute. |
| 151 | # for this one, use the accessor instead of the attribute |
| 152 | |
| 153 | # standard signal handling via %SIG is safe |
| 154 | $SIG{HUP} = \&foo; |
| 155 | $oldaction = POSIX::SigAction->new; |
| 156 | sigaction(SIGHUP, undef, $oldaction); |
| 157 | ok($oldaction->safe, "SIGHUP is safe"); |
| 158 | |
| 159 | # SigAction handling is not safe ... |
| 160 | sigaction(SIGHUP, POSIX::SigAction->new(\&foo)); |
| 161 | sigaction(SIGHUP, undef, $oldaction); |
| 162 | ok(!$oldaction->safe, "SigAction not safe by default"); |
| 163 | |
| 164 | # ... unless we say so! |
| 165 | $newaction = POSIX::SigAction->new(\&foo); |
| 166 | $newaction->safe(1); |
| 167 | sigaction(SIGHUP, $newaction); |
| 168 | sigaction(SIGHUP, undef, $oldaction); |
| 169 | ok($oldaction->safe, "SigAction can be safe"); |
| 170 | |
| 171 | # And safe signal delivery must work |
| 172 | $ok = 0; |
| 173 | kill 'HUP', $$; |
| 174 | ok($ok, "safe signal delivery must work"); |
| 175 | |
| 176 | SKIP: { |
| 177 | eval 'use POSIX qw(%SIGRT SIGRTMIN SIGRTMAX); scalar %SIGRT + SIGRTMIN() + SIGRTMAX()'; |
| 178 | $@ # POSIX did not exort |
| 179 | || SIGRTMIN() < 0 || SIGRTMAX() < 0 # HP-UX 10.20 exports both as -1 |
| 180 | || SIGRTMIN() > $Config{sig_count} # AIX 4.3.3 exports bogus 888 and 999 |
| 181 | and skip("no SIGRT signals", 4); |
| 182 | ok(SIGRTMAX() > SIGRTMIN(), "SIGRTMAX > SIGRTMIN"); |
| 183 | is(scalar %SIGRT, SIGRTMAX() - SIGRTMIN() + 1, "scalar SIGRT"); |
| 184 | my $sigrtmin; |
| 185 | my $h = sub { $sigrtmin = 1 }; |
| 186 | $SIGRT{SIGRTMIN} = $h; |
| 187 | is($SIGRT{SIGRTMIN}, $h, "handler set & get"); |
| 188 | kill 'SIGRTMIN', $$; |
| 189 | is($sigrtmin, 1, "SIGRTMIN handler works"); |
| 190 | } |
| 191 | |
| 192 | SKIP: { |
| 193 | eval 'use POSIX qw(SA_SIGINFO); SA_SIGINFO'; |
| 194 | skip("no SA_SIGINFO", 1) if $@; |
| 195 | skip("SA_SIGINFO is broken on AIX 4.2", 1) if $^O.$Config{osvers} =~ m/^aix4\.2/; |
| 196 | sub hiphup { |
| 197 | is($_[1]->{signo}, SIGHUP, "SA_SIGINFO got right signal"); |
| 198 | } |
| 199 | my $act = POSIX::SigAction->new('hiphup', 0, SA_SIGINFO); |
| 200 | sigaction(SIGHUP, $act); |
| 201 | kill 'HUP', $$; |
| 202 | } |
| 203 | |
| 204 | eval { sigaction(-999, "foo"); }; |
| 205 | like($@, qr/Negative signals/, |
| 206 | "Prevent negative signals instead of core dumping"); |