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003.04.91.Interview-Questions-Process-Replacement

13: System Call Invocation in Process Replacement

pravjot May 31

13: System Call Invocation in Process Replacement
Describe the initial steps that occur in user space when the `execl()` system call is made. How does the transition to kernel space happen?
gaurav133232 June 24
The initial steps that occur in user space when we call execl are:-
- Firstly, the user space program prepares the path and arguments.
- The execl function is called with these parameters.
- Then execve is called passing the arguments.
The transition involves the following steps:-
A system call is made, transitioning the CPU from user mode to kernel mode.
The system call handler identifies the call as execve and dispatches it to the appropriate kernel function.

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