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arm64: switch to generic compat rt_sigaction()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-25 18:56:13 -05:00
parent 84b9e9b402
commit 02323a9d92
2 changed files with 1 additions and 41 deletions
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1
arch/arm64/Kconfig
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@ -6,6 +6,7 @@ config ARM64
select CLONE_BACKWARDS select CLONE_BACKWARDS
select COMMON_CLK select COMMON_CLK
select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS
select GENERIC_COMPAT_RT_SIGACTION
select GENERIC_COMPAT_RT_SIGPENDING select GENERIC_COMPAT_RT_SIGPENDING
select GENERIC_COMPAT_RT_SIGPROCMASK select GENERIC_COMPAT_RT_SIGPROCMASK
select GENERIC_COMPAT_RT_SIGQUEUEINFO select GENERIC_COMPAT_RT_SIGQUEUEINFO

41
arch/arm64/kernel/signal32.c
View File

@ -28,13 +28,6 @@
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include <asm/unistd32.h> #include <asm/unistd32.h>
struct compat_sigaction {
compat_uptr_t sa_handler;
compat_ulong_t sa_flags;
compat_uptr_t sa_restorer;
compat_sigset_t sa_mask;
};
struct compat_old_sigaction { struct compat_old_sigaction {
compat_uptr_t sa_handler; compat_uptr_t sa_handler;
compat_old_sigset_t sa_mask; compat_old_sigset_t sa_mask;
@ -371,40 +364,6 @@ asmlinkage int compat_sys_sigaction(int sig,
return ret; return ret;
} }
asmlinkage int compat_sys_rt_sigaction(int sig,
const struct compat_sigaction __user *act,
struct compat_sigaction __user *oact,
compat_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, restorer;
ret = get_user(handler, &act->sa_handler);
new_ka.sa.sa_handler = compat_ptr(handler);
ret |= get_user(restorer, &act->sa_restorer);
new_ka.sa.sa_restorer = compat_ptr(restorer);
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(ptr_to_compat(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;
}
static int compat_restore_sigframe(struct pt_regs *regs, static int compat_restore_sigframe(struct pt_regs *regs,
struct compat_sigframe __user *sf) struct compat_sigframe __user *sf)
{ {