2005-09-01 22:53:45

by Jeff Dike

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

From: Bodo Stroesser <[email protected]>

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.

Signed-off-by: Bodo Stroesser <[email protected]>
Signed-off-by: Jeff Dike <[email protected]>

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)
{

2005-09-02 10:42:36

by Blaisorblade

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

On Friday 02 September 2005 00:17, Jeff Dike wrote:
> From: Bodo Stroesser <[email protected]>
>
> 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 <[email protected]>
> Signed-off-by: Jeff Dike <[email protected]>
>
> 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)
> {
>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
> Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
> _______________________________________________
> User-mode-linux-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

--
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





___________________________________
Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB
http://mail.yahoo.it

2005-09-02 18:19:48

by Jeff Dike

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

On Fri, Sep 02, 2005 at 12:39:23PM +0200, Blaisorblade wrote:
> Is "skas0" cmd line option preserved?

Yes, it is.

Jeff