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[Qemu-devel] Re: [PATCH] Add fadvise64 stubs
From: |
Kirill A. Shutemov |
Subject: |
[Qemu-devel] Re: [PATCH] Add fadvise64 stubs |
Date: |
Sat, 20 Sep 2008 21:41:58 +0300 |
User-agent: |
Mutt/1.5.18 (2008-05-29) |
On Sat, Sep 20, 2008 at 09:26:04PM +0300, Riku Voipio wrote:
> On Fri, Sep 19, 2008 at 04:52:11PM +0300, Kirill A. Shutemov wrote:
> > Since these are only hints, we happily fake them for now
> > to make applications not barf on ENOSYS.
> >
> > Signed-off-by: Riku Voipio <address@hidden>
> > Signed-off-by: Kirill A. Shutemov <address@hidden>
> > ---
> > linux-user/syscall.c | 19 +++++++++++++++++++
> > 1 files changed, 19 insertions(+), 0 deletions(-)
> >
> > diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> > index 56b4138..74e4998 100644
> > --- a/linux-user/syscall.c
> > +++ b/linux-user/syscall.c
> > @@ -5509,6 +5509,25 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
> > arg1,
> > case TARGET_NR_mincore:
> > goto unimplemented;
> > #endif
> > +#ifdef TARGET_NR_arm_fadvise64_64
> > + case TARGET_NR_arm_fadvise64_64:
> > + {
> > + /*
> > + * arm_fadvise64_64 looks like fadvise64_64 but
> > + * with different argument order
> > + */
> > + abi_long temp;
> > + temp = arg3;
> > + arg3 = arg4;
> > + arg4 = temp;
> > + }
> > +#endif
> > +#ifdef TARGET_NR_fadvise64_64
> > + case TARGET_NR_fadvise64_64:
> > + /* This is a hint, so ignoring and returning success is ok. */
> > + ret = get_errno(0);
> > + break;
> > +#endif
> > #ifdef TARGET_NR_madvise
> > case TARGET_NR_madvise:
> > /* A straight passthrough may not be safe because qemu sometimes
>
> Mmmh, what happens if TARGET_NR_arm_fadvise64_64 is set but
> TARGET_NR_fadvise64_64 isn't :)
Oops... I'll fix it.
--
Regards, Kirill A. Shutemov
+ Belarus, Minsk
+ ALT Linux Team, http://www.altlinux.com/
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