Search results
Results from the WOW.Com Content Network
A high-level overview of the Linux kernel's system call interface, which handles communication between its various components and the userspace. In computing, a system call (commonly abbreviated to syscall) is the programmatic way in which a computer program requests a service from the operating system [a] on which it is executed.
system call – is a function to facilitate programs to request services from the kernel eventfd() netlink – socket family used for IPC between kernel and user space processes, designed as the successor of ioctl ; Netlink was added by Alan Cox during Linux kernel 1.3 development as a character driver interface to provide multiple kernel and ...
The same API is used for overlaying programs in DOS and it has effects similar to ones on POSIX systems. MS-DOS exec functions always load the new program into memory as if the "maximum allocation" in the program's executable file header is set to default value 0xFFFF. The EXEHDR utility can be used to change the maximum allocation field of a ...
I/O performed with a device present on the system, or any form of communication with other processes requires the use of system calls. A system call is a mechanism that is used by the application program to request a service from the operating system. They use a machine-code instruction that causes the processor to change mode. An example would ...
When a process calls fork, it is deemed the parent process and the newly created process is its child. After the fork, both processes not only run the same program, but they resume execution as though both had called the system call. They can then inspect the call's return value to determine their status, child or parent, and act accordingly.
sysctl is a software mechanism in some Unix-like operating systems that reads and modifies the attributes of the system kernel such as its version number, maximum limits, and security settings. [1] It is available both as a system call for compiled programs, and an administrator command for interactive use and scripting.
In computer programming, the term hooking covers a range of techniques used to alter or augment the behaviour of an operating system, of applications, or of other software components by intercepting function calls or messages or events passed between software components.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more