# This license differs from the rest of public-inbox
#
# This module is Copyright (c) 2005 Six Apart, Ltd.
-# Copyright (C) 2019 all contributors <meta@public-inbox.org>
+# Copyright (C) 2019-2020 all contributors <meta@public-inbox.org>
#
# All rights reserved.
#
package PublicInbox::Syscall;
use strict;
use parent qw(Exporter);
-use POSIX qw(ENOSYS SEEK_CUR);
+use POSIX qw(ENOSYS O_NONBLOCK);
use Config;
# $VERSION = '0.25'; # Sys::Syscall version
EPOLLIN EPOLLOUT EPOLLET
EPOLL_CTL_ADD EPOLL_CTL_DEL EPOLL_CTL_MOD
EPOLLONESHOT EPOLLEXCLUSIVE
- signalfd SFD_NONBLOCK);
+ signalfd $SFD_NONBLOCK);
our %EXPORT_TAGS = (epoll => [qw(epoll_ctl epoll_create epoll_wait
EPOLLIN EPOLLOUT
EPOLL_CTL_ADD EPOLL_CTL_DEL EPOLL_CTL_MOD
EPOLL_CTL_ADD => 1,
EPOLL_CTL_DEL => 2,
EPOLL_CTL_MOD => 3,
-
- SFD_CLOEXEC => 02000000,
- SFD_NONBLOCK => 00004000,
};
our $loaded_syscall = 0;
$SYS_signalfd4,
);
+my $SFD_CLOEXEC = 02000000; # Perl does not expose O_CLOEXEC
+our $SFD_NONBLOCK = O_NONBLOCK;
our $no_deprecated = 0;
if ($^O eq "linux") {
my $u64_mod_8 = 0;
# if we're running on an x86_64 kernel, but a 32-bit process,
- # we need to use the i386 syscall numbers.
+ # we need to use the x32 or i386 syscall numbers.
if ($machine eq "x86_64" && $Config{ptrsize} == 4) {
- $machine = "i386";
+ $machine = $Config{cppsymbols} =~ /\b__ILP32__=1\b/ ? 'x32' : 'i386';
}
# Similarly for mips64 vs mips
$SYS_epoll_ctl = 233;
$SYS_epoll_wait = 232;
$SYS_signalfd4 = 289;
+ } elsif ($machine eq 'x32') {
+ $SYS_epoll_create = 1073742037;
+ $SYS_epoll_ctl = 1073742057;
+ $SYS_epoll_wait = 1073742056;
+ $SYS_signalfd4 = 1073742113;
+ } elsif ($machine eq 'sparc64') {
+ $SYS_epoll_create = 193;
+ $SYS_epoll_ctl = 194;
+ $SYS_epoll_wait = 195;
+ $u64_mod_8 = 1;
+ $SYS_signalfd4 = 317;
+ $SFD_CLOEXEC = 020000000;
} elsif ($machine =~ m/^parisc/) {
$SYS_epoll_create = 224;
$SYS_epoll_ctl = 225;
$SYS_epoll_wait = 409;
$u64_mod_8 = 1;
$SYS_signalfd4 = 484;
+ $SFD_CLOEXEC = 010000000;
} elsif ($machine eq "aarch64") {
$SYS_epoll_create = 20; # (sys_epoll_create1)
$SYS_epoll_ctl = 21;
sub signalfd ($$$) {
my ($fd, $signos, $flags) = @_;
if ($SYS_signalfd4) {
- # Not sure if there's a way to get pack/unpack to get the
- # contents of POSIX::SigSet to a buffer, but prepping the
- # bitmap like one would for select() works:
- my $buf = "\0" x 8;
- vec($buf, $_ - 1, 1) = 1 for @$signos;
-
- syscall($SYS_signalfd4, $fd, $buf, 8, $flags|SFD_CLOEXEC);
+ my $set = POSIX::SigSet->new(@$signos);
+ syscall($SYS_signalfd4, $fd, "$$set",
+ # $Config{sig_count} is NSIG, so this is NSIG/8:
+ int($Config{sig_count}/8),
+ $flags|$SFD_CLOEXEC);
} else {
$! = ENOSYS;
undef;