Hi!
> Add PTRACE_SYSCALL_MASK, which allows system calls to be selectively
> traced. It takes a bitmask and a length. A system call is traced
> if its bit is one. Otherwise, it executes normally, and is
> invisible to the ptracing parent.
>
> This is not just useful for UML - strace -e could make good use of it as well.
> + if((current->syscall_mask != NULL) &&
Please put space between if and (.
> @@ -690,6 +693,11 @@ int do_syscall_trace(struct pt_regs *reg
> if (!(current->ptrace & PT_PTRACED))
> goto out;
>
> + if((current->syscall_mask != NULL) && ((long) regs->orig_eax != -1) &&
> + !(current->syscall_mask[regs->orig_eax / (8 * sizeof(long))] &
> + (1 << (regs->orig_eax % (8 * sizeof(long))))))
> + goto out;
> +
Same here... and perhaps you can use __get_bit/__set_bit? (this
applies to few more places).
Are you going to fix non-i386, too?
Pavel
--
Thanks for all the (sleeping) penguins.
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