Move scsi id reservation management to the backend

src/raspberrypi/os_integration/rascsi.service

@@ -5,7 +5,7 @@ After=network.target
 [Service]
 Type=simple
 Restart=always
-ExecStart=/usr/local/bin/rascsi
+ExecStart=/usr/local/bin/rascsi -r 7
 # Example: If you want to automatically attach a hard disk at startup, change
 # the ExecStart line to:
 # ExecStart=/usr/local/bin/rascsi -ID1 /home/pi/images/harddisk.hda

src/web/ractl_cmds.py

@@ -242,18 +242,6 @@ def sort_and_format_devices(devices):
     return formatted_devices
 
 
-def reserve_scsi_ids(reserved_scsi_ids):
-    '''Sends a command to the server to reserve SCSI IDs. Takes a list of strings as argument.'''
-    command = proto.PbCommand()
-    command.operation = proto.PbOperation.RESERVE
-    command.params["ids"] = ",".join(reserved_scsi_ids)
-
-    data = send_pb_command(command.SerializeToString())
-    result = proto.PbResult()
-    result.ParseFromString(data)
-    return {"status": result.status, "msg": result.msg}
-
-
 def set_log_level(log_level):
     '''Sends a command to the server to change the log level. Takes target log level as an argument.'''
     command = proto.PbCommand()

src/web/service-infra/rascsi-web.service

@@ -5,9 +5,7 @@ After=network.target
 [Service]
 Type=simple
 Restart=always
-ExecStart=/home/pi/RASCSI/src/web/start.sh --reserved_ids=7
+ExecStart=/home/pi/RASCSI/src/web/start.sh
-# Use the --reserved_ids argument to define an id or range of ids that will be unavailable for attaching devices.
-# The default is 7 for Macintosh. Ex. to reserve IDs 0, 1, and 7 do:  --reserved_ids=017
 StandardOutput=syslog
 StandardError=syslog
 SyslogIdentifier=RASCSIWEB

src/web/start.sh

@@ -2,22 +2,6 @@
 set -e
 # set -x # Uncomment to Debug
 
-# parse arguments
-while [ "$1" != "" ]; do
-    PARAM=`echo $1 | awk -F= '{print $1}'`
-    VALUE=`echo $1 | awk -F= '{print $2}'`
-    case $PARAM in
-        -r | --reserved_ids)
-	    RESERVED_IDS=$VALUE
-	    ;;
-	*)
-	    echo "ERROR: unknown parameter \"$PARAM\""
-	    exit 1
-	    ;;
-    esac
-    shift
-done
-
 cd $(dirname $0)
 # verify packages installed
 ERROR=0
@@ -72,4 +56,4 @@ else
 fi
 
 echo "Starting web server..."
-python3 web.py ${RESERVED_IDS}
+python3 web.py

src/web/web.py

@@ -28,7 +28,6 @@ from ractl_cmds import (
     eject_by_id,
     get_valid_scsi_ids,
     detach_all,
-    reserve_scsi_ids,
     get_server_info,
     get_network_info,
     validate_scsi_id,
@@ -432,8 +431,6 @@ def rascsi_restart():
     server_info = get_server_info()
     rascsi_service("restart")
     flash("Restarting RaSCSI Service...")
-    # Need to turn this into a list of strings from a list of ints
-    reserve_scsi_ids([str(e) for e in server_info["reserved_ids"]])
     return redirect(url_for("index"))
 
 
@@ -578,12 +575,6 @@ if __name__ == "__main__":
     makedirs(app.config["UPLOAD_FOLDER"], exist_ok=True)
     app.config["MAX_CONTENT_LENGTH"] = MAX_FILE_SIZE
 
-    from sys import argv
-    if len(argv) >= 2:
-        # Reserve SCSI IDs on the backend side to prevent use
-        # Expecting argv as a string of digits such as '017'
-        reserve_scsi_ids(list(argv[1]))
-
     # Load the default configuration file, if found
     from pathlib import Path
     default_config_path = Path(base_dir + DEFAULT_CONFIG)