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SubjectRe: [RFC][v8][PATCH 10/10]: Document clone3() syscall
Date
On Tuesday 13 October 2009, Sukadev Bhattiprolu wrote:
> +clone3(struct clone_struct * __user clone_args, pid_t * __user pids)
> +
> + In addition to doing everything that clone() system call does,
> + the clone3() system call:
> +
> + - allows additional clone flags (all 32 bits in the flags
> + parameter to clone() are in use)
> +
> + - allows user to specify a pid for the child process in its
> + active and ancestor pid name spaces.

Someone (sorry, can't find the old mail) pointed out last time that
the 'pid_t *__user tidptr' argument needs to be an independent pointer,
in order to allow the same use patterns with CLONE_CHILD_SETTID and
CLONE_CHILD_CLEARTID that you can do with the current clone
implementation.

Moving that argument from clone_struct into the argument list would
also make this a three-argument syscall, which solves the naming problem.

Arnd <><


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