12-17-2016
Question about execl in C, replacing process's contents
I'm reading Operating Systems in Depth by Thomas W. Doeppner, and I have a question about execl. He says it's called after fork(), and that it replaces the text (code) of the current process and replaces it with the code of the new program. But that doesn't make sense to me.
Does that mean process A forks itself and its copy is process B, but process A's code is gone, and in its place is the code from process B?
OR does that mean process A forks itself and its copy is process B; process B loads a program into its text section, and now process B's text section is gone and in its place is the program it loaded?
Edit: I realize I forgot to mention the language the author uses in his examples is C
Last edited by SirSalt; 12-17-2016 at 07:08 PM..
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