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powerpc: switch to generic compat rt_sigaction() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-25 18:51:57 -05:00
parent a31dd96ff7
commit 5aa1cde2ed
3 changed files with 1 additions and 39 deletions
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1
arch/powerpc/Kconfig
View File

@ -145,6 +145,7 @@ config PPC
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS
select GENERIC_SIGALTSTACK
select GENERIC_COMPAT_RT_SIGACTION
select GENERIC_COMPAT_RT_SIGQUEUEINFO
select GENERIC_COMPAT_RT_SIGPROCMASK
select GENERIC_COMPAT_RT_SIGPENDING

9
arch/powerpc/kernel/ppc32.h
View File

@ -25,15 +25,6 @@ struct __old_sigaction32 {
compat_uptr_t sa_restorer; /* not used by Linux/SPARC yet */
};
struct sigaction32 {
compat_uptr_t sa_handler; /* Really a pointer, but need to deal with 32 bits */
unsigned int sa_flags;
compat_uptr_t sa_restorer; /* Another 32 bit pointer */
compat_sigset_t sa_mask; /* A 32 bit mask */
};
struct pt_regs32 {
unsigned int gpr[32];
unsigned int nip;

30
arch/powerpc/kernel/signal_32.c
View File

@ -579,36 +579,6 @@ static long restore_user_regs(struct pt_regs *regs,
}
#ifdef CONFIG_PPC64
long compat_sys_rt_sigaction(int sig, const struct sigaction32 __user *act,
struct sigaction32 __user *oact, size_t sigsetsize)
{
struct k_sigaction new_ka, old_ka;
int ret;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (act) {
compat_uptr_t handler;
ret = get_user(handler, &act->sa_handler);
new_ka.sa.sa_handler = compat_ptr(handler);
ret |= get_sigset_t(&new_ka.sa.sa_mask, &act->sa_mask);
ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
if (ret)
return -EFAULT;
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
ret = put_user(to_user_ptr(old_ka.sa.sa_handler), &oact->sa_handler);
ret |= put_sigset_t(&oact->sa_mask, &old_ka.sa.sa_mask);
ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
}
return ret;
}
int copy_siginfo_to_user32(struct compat_siginfo __user *d, siginfo_t *s)
{
int err;