Simulate print spoller

Copyright (C) 2015 V. Atlidakis

COMS W4187 Fall 2015, Columbia University

Project structure

• Makefile: build, (un)install, test, exec
• include/: Header file for defines
• src/addqueue.c: Implements addqueue command
• src/rmqueue.c: Implements rmqueue command
• src/showqueue.c: Implements showqueue command
• scripts/checkpatch.pl: Format checking script
• tests: contain some test media files

Notes

• Each file added in the queue is named after a 16-bytes unique file identifier randomly created from /dev/urandom.

• The installation needs root priviledges to:

  • Create a user "print_spoller"
  • Create a directory "/var/print_spooler"
  • Change owner, enable setuid bit, and copy executables under /bin

Errors

• Please supress stderr before running scripts to automatic parsing of output messages, since standard error is utilized for some error messages

Build

• make [build]

Installation

• make install

Test

• make test

Exec

• make exec_showqueue
• make make exec_addqueue ARGS="./bin/addqueue ./bin/rmqueueu ./bin/*"
• make exec_rmqueue ARGS="nop"