Editing System call (section)

== Categories of system calls ==
System calls can be grouped roughly into six major categories:<ref>{{Cite book|title=Operating System Concepts|last=Silberschatz|first=Abraham|publisher=Wiley|others=Peter B Galvin; Greg Gagne|year=2018|isbn=9781119320913|edition=10th|location=Hoboken, NJ|pages=67|oclc=1004849022}}</ref>

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# Process control
#* create process (for example, <code>[[fork (system call)|fork]]</code> on Unix-like systems, or <code>NtCreateProcess</code> in the [[Windows NT]] [[Native API]])
#* [[Kill (command)|terminate process]]
#* [[Loader (computing)|load]], [[exec (system call)|execute]]
#* get/set process attributes
#* [[Wait (system call)|wait]] for time, wait event, [[Signal (IPC)|signal]] event
#* [[Memory allocation|allocate]] and [[Garbage collection (computer science)|free]] memory
# File management
#* create file, delete file
#* open, close
#* read, write, reposition
#* get/set file attributes
# Device management
#* request device, release device
#* read, write, reposition
#* get/set device attributes
#* logically attach or detach devices
# Information maintenance
#* get/set total system information (including time, date, computer name, enterprise etc.)
#* get/set process, file, or device metadata (including author, opener, creation time and date, etc.)
# Communication
#* create, delete communication connection
#* send, receive messages
#* transfer status information
#* attach or detach remote devices
# Protection
#* get/set file permissions