On Thu, 29 Mar 2012 15:01:52 -0500 Will Drewry <wad@xxxxxxxxxxxx> wrote: > Adds a stub for a function that will return the AUDIT_ARCH_* > value appropriate to the supplied task based on the system > call convention. > > For audit's use, the value can generally be hard-coded at the > audit-site. However, for other functionality not inlined into > syscall entry/exit, this makes that information available. > seccomp_filter is the first planned consumer and, as such, > the comment indicates a tie to HAVE_ARCH_SECCOMP_FILTER. That Should be "CONFIG_HAVE_ARCH_SECCOMP_FILTER", I hope. > is probably an unneeded detail. > > ... > > --- a/include/asm-generic/syscall.h > +++ b/include/asm-generic/syscall.h > @@ -142,4 +142,18 @@ void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, > unsigned int i, unsigned int n, > const unsigned long *args); > > +/** > + * syscall_get_arch - return the AUDIT_ARCH for the current system call > + * @task: task of interest, must be in system call entry tracing > + * @regs: task_pt_regs() of @task > + * > + * Returns the AUDIT_ARCH_* based on the system call convention in use. > + * > + * It's only valid to call this when @task is stopped on entry to a system > + * call, due to %TIF_SYSCALL_TRACE, %TIF_SYSCALL_AUDIT, or %TIF_SECCOMP. > + * > + * Note, at present this function is only required with > + * CONFIG_HAVE_ARCH_SECCOMP_FILTER. > + */ > +int syscall_get_arch(struct task_struct *task, struct pt_regs *regs); > #endif /* _ASM_SYSCALL_H */ So architectures which permit CONFIG_HAVE_ARCH_SECCOMP_FILTER must provide an implementation of this. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
