Re: [uml-devel] [PATCH 10/12] UML - Allow host capability usage to be disabled

From: Blaisorblade
Date: Fri Sep 02 2005 - 05:43:40 EST


On Friday 02 September 2005 00:17, Jeff Dike wrote:
> From: Bodo Stroesser <bstroesser@xxxxxxxxxxxxxxxxxxx>
>
> Add new cmdline setups:
> - noprocmm
> - noptracefaultinfo
> In case of testing, they can be used to switch off usage of
> /proc/mm and PTRACE_FAULTINFO independently.
Is "skas0" cmd line option preserved?
> Signed-off-by: Bodo Stroesser <bstroesser@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxx>
>
> Index: test/arch/um/os-Linux/start_up.c
> ===================================================================
> --- test.orig/arch/um/os-Linux/start_up.c 2005-09-01 16:42:42.000000000
> -0400 +++ test/arch/um/os-Linux/start_up.c 2005-09-01 16:51:23.000000000
> -0400 @@ -275,6 +275,30 @@
> check_ptrace();
> }
>
> +static int __init noprocmm_cmd_param(char *str, int* add)
> +{
> + proc_mm = 0;
> + return 0;
> +}
> +
> +__uml_setup("noprocmm", noprocmm_cmd_param,
> +"noprocmm\n"
> +" Turns off usage of /proc/mm, even if host supports it.\n"
> +" To support /proc/mm, the host needs to be patched using\n"
> +" the current skas3 patch.\n\n");
> +
> +static int __init noptracefaultinfo_cmd_param(char *str, int* add)
> +{
> + ptrace_faultinfo = 0;
> + return 0;
> +}
> +
> +__uml_setup("noptracefaultinfo", noptracefaultinfo_cmd_param,
> +"noptracefaultinfo\n"
> +" Turns off usage of PTRACE_FAULTINFO, even if host supports\n"
> +" it. To support PTRACE_FAULTINFO, the host needs to be patched\n"
> +" using the current skas3 patch.\n\n");
> +
> #ifdef UML_CONFIG_MODE_SKAS
> static inline void check_skas3_ptrace_support(void)
> {
>
>
>
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--
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade





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