forked from lix-project/lix
b352fe2775
This reverts commit 194e3374b8.
Checking the command line for GC roots means that
$ nix-store --delete $path
will fail because $path is now a root because it's mentioned on the
command line.
80 lines
1.8 KiB
Perl
Executable file
80 lines
1.8 KiB
Perl
Executable file
#! @perl@ -w @perlFlags@
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use strict;
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use Nix::Utils;
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use Nix::Config;
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sub readProc {
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return unless -d "/proc";
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opendir DIR, "/proc" or return;
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foreach my $name (readdir DIR) {
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next unless $name =~ /^\d+$/;
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my $process = "/proc/$name";
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#print STDERR "=== $process\n";
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my $target;
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print "$target\n" if $target = readlink "$process/exe";
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print "$target\n" if $target = readlink "$process/cwd";
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if (opendir FDS, "$process/fd") {
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foreach my $name (readdir FDS) {
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$target = readlink "$process/fd/$name";
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print "$target\n" if $target && substr($target, 0, 1) eq "/";
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}
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closedir FDS;
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}
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if (open MAP, "<$process/maps") {
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while (<MAP>) {
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next unless /^ \s* \S+ \s+ \S+ \s+ \S+ \s+ \S+ \s+ \S+ \s+ (\/\S+) \s* $/x;
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print "$1\n";
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}
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close MAP;
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}
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# Get all store paths that appear in the environment of this process.
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eval {
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my $env = Nix::Utils::readFile "$process/environ";
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my @matches = $env =~ /\Q$Nix::Config::storeDir\E\/[0-9a-z]+[0-9a-zA-Z\+\-\._\?=]*/g;
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print "$_\n" foreach @matches;
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}
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}
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closedir DIR;
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}
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sub lsof {
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return unless open LSOF, "lsof -n -w -F n 2> /dev/null |";
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while (<LSOF>) {
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next unless /^n (\/ .*)$/x;
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print $1, "\n";
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}
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close LSOF;
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}
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readProc;
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lsof;
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sub printFile {
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my ($fn) = @_;
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if (-e $fn) {
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print Nix::Utils::readFile($fn), "\n";
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}
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}
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# This is rather NixOS-specific, so it probably shouldn't be here.
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printFile "/proc/sys/kernel/modprobe";
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printFile "/proc/sys/kernel/fbsplash";
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printFile "/proc/sys/kernel/poweroff_cmd";
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