The Linux Programming Interface: a linux and unix system Programming Handbook
tải về 6.93 Mb. Chế độ xem pdf
|
| 37
DAEMONS 767 37.1 Overview ................................................................................................................. 767 37.2 Creating a Daemon ................................................................................................... 768 Contents in Detail xxi 37.3 Guidelines for Writing Daemons ................................................................................. 771 37.4 Using SIGHUP to Reinitialize a Daemon ......................................................................... 772 37.5 Logging Messages and Errors Using syslog ................................................................... 775 37.5.1 Overview............................................................................................. 775 37.5.2 The syslog API ....................................................................................... 777 37.5.3 The /etc/syslog.conf File ...................................................................... 781 37.6 Summary.................................................................................................................. 782 37.7 Exercise ................................................................................................................... 782 38 WRITING SECURE PRIVILEGED PROGRAMS 783 38.1 Is a Set-User-ID or Set-Group-ID Program Required? ....................................................... 784 38.2 Operate with Least Privilege ....................................................................................... 784 38.3 Be Careful When Executing a Program ........................................................................ 787 38.4 Avoid Exposing Sensitive Information........................................................................... 788 38.5 Confine the Process ................................................................................................... 789 38.6 Beware of Signals and Race Conditions....................................................................... 790 38.7 Pitfalls When Performing File Operations and File I/O................................................... 790 38.8 Don’t Trust Inputs or the Environment............................................................................ 791 38.9 Beware of Buffer Overruns ......................................................................................... 792 38.10 Beware of Denial-of-Service Attacks ............................................................................. 793 38.11 Check Return Statuses and Fail Safely .......................................................................... 794 38.12 Summary.................................................................................................................. 795 38.13 Exercises .................................................................................................................. 796 tải về 6.93 Mb. Chia sẻ với bạn bè của bạn:
|