perkeep/dev-cammount

#!/usr/bin/perl

use strict;
use FindBin qw($Bin);
use Getopt::Long;
require "$Bin/misc/devlib.pl";

my @blobref_arg;

if (@ARGV) {
    my $blobref = shift;
    unless ($blobref && $blobref =~ /^\w+-[0-9a-f]{10,}$/) {
        die "Usage: dev-cammount [<blobref>]\n";
    }
    push @blobref_arg, $blobref;
}

my $cammount = build_bin("./cmd/cammount");

my $dir = "/tmp/cammount-dir";
mkdir $dir, 0700 unless -d $dir;

try_unmount();
print "Mounting on $dir ...\n";
system("$cammount", "--server=http://localhost:3179/bs", $dir, @blobref_arg)
    and warn "cammount failure: $!\n";
warn "Failed to unmount\n" unless try_unmount();

sub try_unmount {
    if ($^O eq "linux" && system("fusermount", "-u", $dir) == 0) {
        return 1;
    }
    return 1 if system("umount", $dir) == 0;
    return 1 if system("umount", "-f", $dir) == 0;
    return 0;
}