147 lines
3.7 KiB
Text
147 lines
3.7 KiB
Text
#! @perl@ -w
|
|
|
|
my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
|
|
|
|
|
|
if (scalar @ARGV < 1) {
|
|
print STDERR <<EOF
|
|
Usage: nix-copy-closure [--from | --to] HOSTNAME [--sign] [--gzip] PATHS...
|
|
EOF
|
|
;
|
|
exit 1;
|
|
}
|
|
|
|
|
|
# Get the target host.
|
|
my $sshHost;
|
|
my @sshOpts = split ' ', ($ENV{"NIX_SSHOPTS"} or "");
|
|
|
|
my $sign = 0;
|
|
|
|
my $compressor = "cat";
|
|
my $decompressor = "cat";
|
|
|
|
my $toMode = 1;
|
|
|
|
|
|
# !!! Copied from nix-pack-closure, should put this in a module.
|
|
my @storePaths = ();
|
|
|
|
while (@ARGV) {
|
|
my $arg = shift @ARGV;
|
|
|
|
if ($arg eq "--sign") {
|
|
$sign = 1;
|
|
}
|
|
elsif ($arg eq "--gzip") {
|
|
$compressor = "gzip";
|
|
$decompressor = "gunzip";
|
|
}
|
|
elsif ($arg eq "--from") {
|
|
$toMode = 0;
|
|
}
|
|
elsif ($arg eq "--to") {
|
|
$toMode = 1;
|
|
}
|
|
elsif (!defined $sshHost) {
|
|
$sshHost = $arg;
|
|
}
|
|
else {
|
|
push @storePaths, $arg;
|
|
}
|
|
}
|
|
|
|
|
|
if ($toMode) { # Copy TO the remote machine.
|
|
|
|
my @allStorePaths;
|
|
my %storePathsSeen;
|
|
|
|
foreach my $storePath (@storePaths) {
|
|
# $arg might be a symlink to the store, so resolve it.
|
|
my $storePath2 = (`$binDir/nix-store --query --resolve '$storePath'`
|
|
or die "cannot resolve `$storePath'");
|
|
chomp $storePath2;
|
|
|
|
# Get the closure of this path.
|
|
my $pid = open(READ,
|
|
"$binDir/nix-store --query --requisites '$storePath2'|") or die;
|
|
|
|
while (<READ>) {
|
|
chomp;
|
|
die "bad: $_" unless /^\//;
|
|
if (!defined $storePathsSeen{$_}) {
|
|
push @allStorePaths, $_;
|
|
$storePathsSeen{$_} = 1;
|
|
}
|
|
}
|
|
|
|
close READ or die "nix-store failed: $?";
|
|
}
|
|
|
|
|
|
# Ask the remote host which paths are invalid.
|
|
open(READ, "ssh @sshOpts $sshHost nix-store --check-validity --print-invalid @allStorePaths|");
|
|
my @missing = ();
|
|
while (<READ>) {
|
|
chomp;
|
|
print STDERR "target machine needs $_\n";
|
|
push @missing, $_;
|
|
}
|
|
close READ or die;
|
|
|
|
|
|
# Export the store paths and import them on the remote machine.
|
|
if (scalar @missing > 0) {
|
|
my $extraOpts = "";
|
|
$extraOpts .= "--sign" if $sign == 1;
|
|
system("nix-store --export $extraOpts @missing | $compressor | ssh @sshOpts $sshHost '$decompressor | nix-store --import'") == 0
|
|
or die "copying store paths to remote machine `$sshHost' failed: $?";
|
|
}
|
|
|
|
}
|
|
|
|
|
|
else { # Copy FROM the remote machine.
|
|
|
|
# Query the closure of the given store paths on the remote
|
|
# machine. Paths are assumed to be store paths; there is no
|
|
# resolution (following of symlinks).
|
|
my $pid = open(READ,
|
|
"ssh @sshOpts $sshHost nix-store --query --requisites @storePaths|") or die;
|
|
|
|
my @allStorePaths;
|
|
my %storePathsSeen;
|
|
|
|
while (<READ>) {
|
|
chomp;
|
|
die "bad: $_" unless /^\//;
|
|
if (!defined $storePathsSeen{$_}) {
|
|
push @allStorePaths, $_;
|
|
$storePathsSeen{$_} = 1;
|
|
}
|
|
}
|
|
|
|
close READ or die "nix-store on remote machine `$sshHost' failed: $?";
|
|
|
|
|
|
# What paths are already valid locally?
|
|
open(READ, "@bindir@/nix-store --check-validity --print-invalid @allStorePaths|");
|
|
my @missing = ();
|
|
while (<READ>) {
|
|
chomp;
|
|
print STDERR "local machine needs $_\n";
|
|
push @missing, $_;
|
|
}
|
|
close READ or die;
|
|
|
|
|
|
# Export the store paths on the remote machine and import them on locally.
|
|
if (scalar @missing > 0) {
|
|
my $extraOpts = "";
|
|
$extraOpts .= "--sign" if $sign == 1;
|
|
system("ssh @sshOpts $sshHost 'nix-store --export $extraOpts @missing | $compressor' | $decompressor | @bindir@/nix-store --import") == 0
|
|
or die "copying store paths to remote machine `$sshHost' failed: $?";
|
|
}
|
|
|
|
}
|