Hi,
Richard, might I ping you about this one?
Reading other mails on this ML, I reckon' you're quite busy - no
problem, it's not really critical anyway. Just want to make sure the
updated patch got noticed.
Thanks,
-hwh
Am 2015-06-29 11:50, schrieb Hans-Werner Hilse:
> modify_ldt() was declared as an external symbol. Despite the man
> page for this syscall telling that there is no wrapper in glibc,
> since version 2.1 there actually is, so linking to the glibc
> works.
>
> Since modify_ldt() is not a POSIX interface, other libc
> implementations do not always provide a wrapper function.
> Even glibc headers do not provide a corresponding declaration.
>
> So go the recommended way to call this using syscall().
>
> Signed-off-by: Hans-Werner Hilse <hwhi...@gmail.com>
> ---
> arch/x86/um/ldt.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/um/ldt.c b/arch/x86/um/ldt.c
> index 9701a4f..836a1eb 100644
> --- a/arch/x86/um/ldt.c
> +++ b/arch/x86/um/ldt.c
> @@ -12,7 +12,10 @@
> #include <skas.h>
> #include <sysdep/tls.h>
>
> -extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
> +static inline int modify_ldt (int func, void *ptr, unsigned long
> bytecount)
> +{
> + return syscall(__NR_modify_ldt, func, ptr, bytecount);
> +}
>
> static long write_ldt_entry(struct mm_id *mm_idp, int func,
> struct user_desc *desc, void **addr, int done)
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