Difference between revisions of "Syscall"
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A system call is an [[API]] for a [[userland]] [[process]] to communicate with the [[kernel]] to request data or services outside of it's [[protected memory]]. The kernel will deliver data based on the credentials of the userland process. System calls are listed in section 2 of the online [[manual]] page which describes their function in the [[C]] programming language. A program wishing to open a file would use the [[open]](2) system call to do this. | A system call is an [[API]] for a [[userland]] [[process]] to communicate with the [[kernel]] to request data or services outside of it's [[protected memory]]. The kernel will deliver data based on the credentials of the userland process. System calls are listed in section 2 of the online [[manual]] page which describes their function in the [[C]] programming language. A program wishing to open a file would use the [[open]](2) system call to do this. | ||
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| + | Also see [[system call]]. | ||
Latest revision as of 09:17, 20 August 2011
A system call is an API for a userland process to communicate with the kernel to request data or services outside of it's protected memory. The kernel will deliver data based on the credentials of the userland process. System calls are listed in section 2 of the online manual page which describes their function in the C programming language. A program wishing to open a file would use the open(2) system call to do this.
Also see system call.
