On Tue, Oct 28, 2014 at 11:01:31AM +0000, Kevin Peterson wrote:
> Hi,
>
> When a process is created using vfork() child process is created and
> starts running in the parent process address space, until exit() or
> exec() is called.
>
> What happens to the parent process, if some one kills the child process
> before calling the exit()/exec()?
According to the vfork man page:
vfork() differs from fork(2) in that the calling thread is suspended
until the child terminates (either normally, by calling _exit(2), or
abnormally, after delivery of a fatal signal), or it makes a call to
execve(2). Until that point, the child shares all memory with its par‐
ent, including the stack. The child must not return from the current
function or call exit(3), but may call _exit(2).
So I should imagine that when the child is killed, the parent resumes,
and can call wait() and retrieve the child's exit status.
--
"Procrastination grows to fill the available time"
-- Mitchell's corollary to Parkinson's Law
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