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Add generic sys_old_select()

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Add a generic implementation of the old select() syscall, which expects
its argument in a memory block and switch all architectures over to use
it.

Signed-off-by: Christoph Hellwig <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Jeff Dike <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Reviewed-by: H. Peter Anvin <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: "Luck, Tony" <[email protected]>
Cc: James Morris <[email protected]>
Acked-by: Andreas Schwab <[email protected]>
Acked-by: Russell King <[email protected]>
Acked-by: Greg Ungerer <[email protected]>
Acked-by: David Howells <[email protected]>
Cc: Andreas Schwab <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-03-10 15:21:13 -08:00 • committed by Linus Torvalds
commit 5d0e52830e
27 changed files with 52 additions and 152 deletions
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18
fs/compat.c
View file

@ -1795,6 +1795,24 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
return ret;
}
struct compat_sel_arg_struct {
compat_ulong_t n;
compat_uptr_t inp;
compat_uptr_t outp;
compat_uptr_t exp;
compat_uptr_t tvp;
};
asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg)
{
struct compat_sel_arg_struct a;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
compat_ptr(a.exp), compat_ptr(a.tvp));
}
#ifdef HAVE_SET_RESTORE_SIGMASK
static long do_compat_pselect(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,