Library Functions and System Calls
Many library functions, such those in the C Standard Library, act as interfaces for abstraction of system calls. The fork and execve functions in glibc are examples of this. They call the lower-level fork and execve system calls, respectively.
This may lead to incorrectly using the terms "system call" and "syscall" to refer to higher-level library calls rather than the similarly named system calls, which they wrap.
Read more about this topic: Wrapper Function
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