In computing, a system call (syscall) is the programmatic way in which a computer program requests a service from the operating system on which it is executed...

process", makes any environment changes the child will need and then calls the exec system call to overlay itself with the new program: it ceases execution of...

stat() is a Unix system call that queries the file system for metadata about a file (including special files such as directories). The metadata contains...

corresponding system call named execve, whereas all other functions are user-space wrappers around it. High-level programming languages usually provide one call named...

POSIX compliant operating systems, a program that needs to access data from a file stored in a file system uses the read system call. The file is identified...

On many computer operating systems, a computer process terminates its execution by making an exit system call. More generally, an exit in a multithreading...

or interrupt causes the program to resume execution. A typical sleep system call takes a time value as a parameter, specifying the minimum amount of time...

is the primary way to output data from a program by directly using a system call. The destination is identified by a numeric code. The data to be written...

A close system call is a system call used to close a file descriptor by the kernel. For most file systems, a program terminates access to a file in a...

independently executing child process. The parent process may then issue a wait system call, which suspends the execution of the parent process while the child executes...

For most file systems, a program initializes access to a file in a file system using the open system call. This allocates resources associated to the...

Linux-specific system call that moves data between a file descriptor and a pipe without a round trip to user space. The related system call vmsplice() moves...

In Unix-like operating systems, dup (short for "duplicate") and dup2 system calls create a copy of a given file descriptor. This new descriptor actually...

by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain...

command-line interpreters Call, a method of starting a subroutine Computer-assisted language learning, a concept in language education System call, in computer science...

A call login system is a service for telephone equipment that handles staff logons, often in call centers. In such environments, logging on is usually...

When a process requests a service from the kernel, it must invoke a system call, usually through a wrapper function. There are different kernel architecture...

A call-to-gate system is an airport terminal design in which passengers are kept in a central area until shortly before their flight is due to board,...

Westminster system, such as the United Kingdom, Denmark, Malaysia, Australia and New Zealand, the prime minister has the de facto power to call an election...

message and makes a system call to send the message. Packing the parameters is called marshalling. The client's local operating system sends the message...

Entropy-supplying system calls are system calls in Unix-like operating system kernels through which processes can obtain entropic or random data. The...

is well integrated into most Unix-like operating systems. Pipes are created using the pipe system call, which creates a new pipe and returns a pair of...

calls to an operating system, see System call. A Supervisor Call instruction (SVC) is a hardware instruction used by the System/360 family of IBM mainframe...

Call of Duty is a 2003 first-person shooter game developed by Infinity Ward and published by Activision. It is the first installment in the Call of Duty...

game system is based on Chaosium's Basic Role-Playing (BRP) with additions for the horror genre. These include special rules for sanity and luck. Call of...

incoming call. 440 Hz 5 ms. Problems playing this file? See media help. An automated call distribution system, commonly known as automatic call distributor...

The 4030 Call System (Persian: سامانه تلفنی ۴۰۳۰) briefly "4030-system" is the Iranian telephone system that was created during the early days of the COVID-19...

been included in many operating system distributions, many of which are called Linux. One such Linux kernel operating system is Android which is used in many...

process model, network stack, and virtual file system), and an object-oriented device driver API called I/O Kit. The hybrid kernel design provides the...

operating system resource. Many embedded systems and RTOSs, however, allow the application itself to run in kernel mode for greater system call efficiency...