1 files changed, 44 insertions, 0 deletions
diff --git a/t/helper.pm b/t/helper.pm
new file mode 100644
index 0000000..3890797
--- /dev/null
+++ b/t/helper.pm
@@ -0,0 +1,44 @@
+use strict;
+
+sub can_create_fake_media {
+    system("modprobe -n scsi_debug") == 0;
+}
+
+sub create_fake_media {
+    my ($o_delay) = @_;
+
+    system("modprobe scsi_debug ptype=0 removable=1 num_tgts=1 add_host=1") == 0
+      or die "Failed to load scsi_debug kernel module\n";
+    my @paths = glob("/sys/bus/pseudo/drivers/scsi_debug/adapter0/host*/target*/*:*/block/*");
+    @paths == 1
+      or die "Unexpected number of scsi_debug devices\n";
+    my ($prefix, $device) = split("block/", $paths[0]);
+    if ($o_delay) {
+        system("echo 'sleep $o_delay; dd if=t/cdroms-test.iso of=/dev/$device conv=nocreat' | at now >& /dev/null") == 0
+          or die "Failed to schedule copy of ISO to fake SCSI device\n";
+    } else {
+        system("dd if=t/cdroms-test.iso of=/dev/$device conv=nocreat >& /dev/null") == 0
+          or die "Failed to copy ISO to fake SCSI device\n";
+    }
+    $device;
+}
+
+sub remove_fake_media {
+    my $tries = 0;
+    while (system("modprobe -r -q scsi_debug") != 0) {
+        ++$tries < 5 or die "Failed to remove scsi_debug kernel module\n";
+        sleep(1);
+    }
+}
+
+sub find_mount_point {
+    my ($device) = @_;
+    open(my $fh, '<', '/proc/mounts') or die "Couldn't read /proc/mounts\n";
+    while (<$fh>) {
+        my ($device_path, $mount_point) = split(' ', $_);
+        return $mount_point if $device_path eq "/dev/$device";
+    }
+    return undef;
+}
+
+1;