* [PATCH] spawn_pp: use `which()' properly for pure-Perl spawn
@ 2023-01-29 9:45 Eric Wong
0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2023-01-29 9:45 UTC (permalink / raw)
To: meta
I have no idea if mod_perl/mod_perl2 is used nowadays, but
we're stuck supporting it as long as mod_perl exists. So
add some tests and make minor updates to existing ones to
ensure it stays working.
---
lib/PublicInbox/SpawnPP.pm | 5 ++++-
t/spawn.t | 42 ++++++++++++++++++++++++++++++--------
2 files changed, 37 insertions(+), 10 deletions(-)
diff --git a/lib/PublicInbox/SpawnPP.pm b/lib/PublicInbox/SpawnPP.pm
index 7a5793f6..73859e9b 100644
--- a/lib/PublicInbox/SpawnPP.pm
+++ b/lib/PublicInbox/SpawnPP.pm
@@ -3,9 +3,11 @@
# Pure-Perl implementation of "spawn". This can't take advantage
# of vfork, so no speedups under Linux for spawning from large processes.
+# Do not require this directly, only use from PublicInbox::Spawn
package PublicInbox::SpawnPP;
use v5.12;
use POSIX qw(dup2 _exit setpgid :signal_h);
+use PublicInbox::Spawn qw(which);
# Pure Perl implementation for folks that do not use Inline::C
sub pi_fork_exec ($$$$$$$) {
@@ -46,7 +48,8 @@ sub pi_fork_exec ($$$$$$$) {
sigprocmask(SIG_SETMASK, $old) or die "SIG_SETMASK ~CHLD: $!";
$cmd->[0] = $f;
if ($ENV{MOD_PERL}) {
- @$cmd = (which('env'), '-i', @$env, @$cmd);
+ $f = which('env');
+ @$cmd = ('env', '-i', @$env, @$cmd);
} else {
%ENV = map { split(/=/, $_, 2) } @$env;
}
diff --git a/t/spawn.t b/t/spawn.t
index c22cfcfc..ff95ae8e 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -1,10 +1,11 @@
-# Copyright (C) 2015-2021 all contributors <meta@public-inbox.org>
+#!perl -w
+# Copyright (C) all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
-use strict;
-use warnings;
+use v5.12;
use Test::More;
use PublicInbox::Spawn qw(which spawn popen_rd);
-use PublicInbox::Sigfd;
+require PublicInbox::Sigfd;
+require PublicInbox::DS;
{
my $true = which('true');
@@ -38,9 +39,8 @@ SKIP: {
$pid = eval { spawn(['true'], undef, { pgid => $wrong_pgid, 2 => $w }) };
close $w;
my $err = do { local $/; <$r> };
- # diag "$err ($@)";
if (defined $pid) {
- waitpid($pid, 0) if defined $pid;
+ waitpid($pid, 0);
isnt($?, 0, 'child error (pure-Perl)');
} else {
ok($@, 'exception raised');
@@ -65,7 +65,7 @@ EOF
my $rd = popen_rd([$^X, '-e', $script]);
diag 'waiting for child to reap grandchild...';
chomp(my $line = readline($rd));
- my ($rdy, $pid) = split(' ', $line);
+ my ($rdy, $pid) = split(/ /, $line);
is($rdy, 'RDY', 'got ready signal, waitpid(-1) works in child');
ok(kill('CHLD', $pid), 'sent SIGCHLD to child');
is(readline($rd), "HI\n", '$SIG{CHLD} works in child');
@@ -199,6 +199,30 @@ SKIP: {
isnt($?, 0, 'non-zero exit status');
}
-done_testing();
+SKIP: {
+ require PublicInbox::SpawnPP;
+ require File::Temp;
+ my $tmp = File::Temp->newdir('spawnpp-XXXX', TMPDIR => 1);
+ my $cmd = [ qw(/bin/sh -c), 'echo $HI >foo' ];
+ my $env = [ 'HI=hihi' ];
+ my $rlim = [];
+ my $pgid = -1;
+ my $pid = PublicInbox::SpawnPP::pi_fork_exec([], '/bin/sh', $cmd, $env,
+ $rlim, "$tmp", $pgid);
+ is(waitpid($pid, 0), $pid, 'spawned process exited');
+ is($?, 0, 'no error');
+ open my $fh, '<', "$tmp/foo" or die "open: $!";
+ is(readline($fh), "hihi\n", 'env+chdir worked for SpawnPP');
+ close $fh;
+ unlink("$tmp/foo") or die "unlink: $!";
+ {
+ local $ENV{MOD_PERL} = 1;
+ $pid = PublicInbox::SpawnPP::pi_fork_exec([],
+ '/bin/sh', $cmd, $env, $rlim, "$tmp", $pgid);
+ }
+ is(waitpid($pid, 0), $pid, 'spawned process exited');
+ open $fh, '<', "$tmp/foo" or die "open: $!";
+ is(readline($fh), "hihi\n", 'env+chdir SpawnPP under (faked) MOD_PERL');
+}
-1;
+done_testing();
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2023-01-29 9:45 [PATCH] spawn_pp: use `which()' properly for pure-Perl spawn Eric Wong
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