tracehook_signal_handler(sig, info, ka, regs, stepping);
}
+void signal_setup_done(int failed, struct ksignal *ksig, int stepping)
+{
+ if (failed)
+ force_sigsegv(ksig->sig, current);
+ else
+ signal_delivered(ksig->sig, &ksig->info, &ksig->ka,
+ signal_pt_regs(), stepping);
+}
+
/*
* It could be that complete_signal() picked us to notify about the
* group-wide signal. Other threads should be notified now to take
return 0;
}
-long do_sigpending(void __user *set, unsigned long sigsetsize)
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(rt_sigprocmask, int, how, compat_sigset_t __user *, nset,
+ compat_sigset_t __user *, oset, compat_size_t, sigsetsize)
{
- long error = -EINVAL;
- sigset_t pending;
+#ifdef __BIG_ENDIAN
+ sigset_t old_set = current->blocked;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (nset) {
+ compat_sigset_t new32;
+ sigset_t new_set;
+ int error;
+ if (copy_from_user(&new32, nset, sizeof(compat_sigset_t)))
+ return -EFAULT;
+
+ sigset_from_compat(&new_set, &new32);
+ sigdelsetmask(&new_set, sigmask(SIGKILL)|sigmask(SIGSTOP));
+
+ error = sigprocmask(how, &new_set, NULL);
+ if (error)
+ return error;
+ }
+ if (oset) {
+ compat_sigset_t old32;
+ sigset_to_compat(&old32, &old_set);
+ if (copy_to_user(oset, &old_set, sizeof(sigset_t)))
+ return -EFAULT;
+ }
+ return 0;
+#else
+ return sys_rt_sigprocmask(how, (sigset_t __user *)nset,
+ (sigset_t __user *)oset, sigsetsize);
+#endif
+}
+#endif
+static int do_sigpending(void *set, unsigned long sigsetsize)
+{
if (sigsetsize > sizeof(sigset_t))
- goto out;
+ return -EINVAL;
spin_lock_irq(¤t->sighand->siglock);
- sigorsets(&pending, ¤t->pending.signal,
+ sigorsets(set, ¤t->pending.signal,
¤t->signal->shared_pending.signal);
spin_unlock_irq(¤t->sighand->siglock);
/* Outside the lock because only this thread touches it. */
- sigandsets(&pending, ¤t->blocked, &pending);
-
- error = -EFAULT;
- if (!copy_to_user(set, &pending, sigsetsize))
- error = 0;
-
-out:
- return error;
+ sigandsets(set, ¤t->blocked, set);
+ return 0;
}
/**
* @set: stores pending signals
* @sigsetsize: size of sigset_t type or larger
*/
-SYSCALL_DEFINE2(rt_sigpending, sigset_t __user *, set, size_t, sigsetsize)
+SYSCALL_DEFINE2(rt_sigpending, sigset_t __user *, uset, size_t, sigsetsize)
{
- return do_sigpending(set, sigsetsize);
+ sigset_t set;
+ int err = do_sigpending(&set, sigsetsize);
+ if (!err && copy_to_user(uset, &set, sigsetsize))
+ err = -EFAULT;
+ return err;
+}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(rt_sigpending, compat_sigset_t __user *, uset,
+ compat_size_t, sigsetsize)
+{
+#ifdef __BIG_ENDIAN
+ sigset_t set;
+ int err = do_sigpending(&set, sigsetsize);
+ if (!err) {
+ compat_sigset_t set32;
+ sigset_to_compat(&set32, &set);
+ /* we can get here only if sigsetsize <= sizeof(set) */
+ if (copy_to_user(uset, &set32, sigsetsize))
+ err = -EFAULT;
+ }
+ return err;
+#else
+ return sys_rt_sigpending((sigset_t __user *)uset, sigsetsize);
+#endif
}
+#endif
#ifndef HAVE_ARCH_COPY_SIGINFO_TO_USER
return do_tkill(0, pid, sig);
}
+static int do_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t *info)
+{
+ /* Not even root can pretend to send signals from the kernel.
+ * Nor can they impersonate a kill()/tgkill(), which adds source info.
+ */
+ if (info->si_code >= 0 || info->si_code == SI_TKILL) {
+ /* We used to allow any < 0 si_code */
+ WARN_ON_ONCE(info->si_code < 0);
+ return -EPERM;
+ }
+ info->si_signo = sig;
+
+ /* POSIX.1b doesn't mention process groups. */
+ return kill_proc_info(sig, info, pid);
+}
+
/**
* sys_rt_sigqueueinfo - send signal information to a signal
* @pid: the PID of the thread
siginfo_t __user *, uinfo)
{
siginfo_t info;
-
if (copy_from_user(&info, uinfo, sizeof(siginfo_t)))
return -EFAULT;
+ return do_rt_sigqueueinfo(pid, sig, &info);
+}
- /* Not even root can pretend to send signals from the kernel.
- * Nor can they impersonate a kill()/tgkill(), which adds source info.
- */
- if (info.si_code >= 0 || info.si_code == SI_TKILL) {
- /* We used to allow any < 0 si_code */
- WARN_ON_ONCE(info.si_code < 0);
- return -EPERM;
- }
- info.si_signo = sig;
-
- /* POSIX.1b doesn't mention process groups. */
- return kill_proc_info(sig, &info, pid);
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE3(rt_sigqueueinfo,
+ compat_pid_t, pid,
+ int, sig,
+ struct compat_siginfo __user *, uinfo)
+{
+ siginfo_t info;
+ int ret = copy_siginfo_from_user32(&info, uinfo);
+ if (unlikely(ret))
+ return ret;
+ return do_rt_sigqueueinfo(pid, sig, &info);
}
+#endif
-long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info)
+static int do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info)
{
/* This is only valid for single tasks */
if (pid <= 0 || tgid <= 0)
return do_rt_tgsigqueueinfo(tgid, pid, sig, &info);
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo,
+ compat_pid_t, tgid,
+ compat_pid_t, pid,
+ int, sig,
+ struct compat_siginfo __user *, uinfo)
+{
+ siginfo_t info;
+
+ if (copy_siginfo_from_user32(&info, uinfo))
+ return -EFAULT;
+ return do_rt_tgsigqueueinfo(tgid, pid, sig, &info);
+}
+#endif
+
int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact)
{
struct task_struct *t = current;
return 0;
}
-int
+static int
do_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, unsigned long sp)
{
stack_t oss;
out:
return error;
}
-#ifdef CONFIG_GENERIC_SIGALTSTACK
SYSCALL_DEFINE2(sigaltstack,const stack_t __user *,uss, stack_t __user *,uoss)
{
return do_sigaltstack(uss, uoss, current_user_stack_pointer());
}
-#endif
int restore_altstack(const stack_t __user *uss)
{
}
#ifdef CONFIG_COMPAT
-#ifdef CONFIG_GENERIC_SIGALTSTACK
COMPAT_SYSCALL_DEFINE2(sigaltstack,
const compat_stack_t __user *, uss_ptr,
compat_stack_t __user *, uoss_ptr)
__put_user(t->sas_ss_size, &uss->ss_size);
}
#endif
-#endif
#ifdef __ARCH_WANT_SYS_SIGPENDING
*/
SYSCALL_DEFINE1(sigpending, old_sigset_t __user *, set)
{
- return do_sigpending(set, sizeof(*set));
+ return sys_rt_sigpending((sigset_t __user *)set, sizeof(old_sigset_t));
}
#endif
}
#endif /* __ARCH_WANT_SYS_SIGPROCMASK */
-#ifdef __ARCH_WANT_SYS_RT_SIGACTION
+#ifndef CONFIG_ODD_RT_SIGACTION
/**
* sys_rt_sigaction - alter an action taken by a process
* @sig: signal to be sent
out:
return ret;
}
-#endif /* __ARCH_WANT_SYS_RT_SIGACTION */
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(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;
+ compat_sigset_t mask;
+#ifdef __ARCH_HAS_SA_RESTORER
+ compat_uptr_t restorer;
+#endif
+ 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);
+#ifdef __ARCH_HAS_SA_RESTORER
+ ret |= get_user(restorer, &act->sa_restorer);
+ new_ka.sa.sa_restorer = compat_ptr(restorer);
+#endif
+ ret |= copy_from_user(&mask, &act->sa_mask, sizeof(mask));
+ ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ if (ret)
+ return -EFAULT;
+ sigset_from_compat(&new_ka.sa.sa_mask, &mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+ if (!ret && oact) {
+ sigset_to_compat(&mask, &old_ka.sa.sa_mask);
+ ret = put_user(ptr_to_compat(old_ka.sa.sa_handler),
+ &oact->sa_handler);
+ ret |= copy_to_user(&oact->sa_mask, &mask, sizeof(mask));
+ ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+#ifdef __ARCH_HAS_SA_RESTORER
+ ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer),
+ &oact->sa_restorer);
+#endif
+ }
+ return ret;
+}
+#endif
+#endif /* !CONFIG_ODD_RT_SIGACTION */
+
+#ifdef CONFIG_OLD_SIGACTION
+SYSCALL_DEFINE3(sigaction, int, sig,
+ const struct old_sigaction __user *, act,
+ struct old_sigaction __user *, oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ if (act) {
+ old_sigset_t mask;
+ if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+ __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+ __get_user(mask, &act->sa_mask))
+ return -EFAULT;
+#ifdef __ARCH_HAS_KA_RESTORER
+ new_ka.ka_restorer = NULL;
+#endif
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+ __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
+ __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+ __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+ return -EFAULT;
+ }
+
+ return ret;
+}
+#endif
+#ifdef CONFIG_COMPAT_OLD_SIGACTION
+COMPAT_SYSCALL_DEFINE3(sigaction, int, sig,
+ const struct compat_old_sigaction __user *, act,
+ struct compat_old_sigaction __user *, oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+ compat_old_sigset_t mask;
+ compat_uptr_t handler, restorer;
+
+ if (act) {
+ if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user(handler, &act->sa_handler) ||
+ __get_user(restorer, &act->sa_restorer) ||
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+ __get_user(mask, &act->sa_mask))
+ return -EFAULT;
+
+#ifdef __ARCH_HAS_KA_RESTORER
+ new_ka.ka_restorer = NULL;
+#endif
+ new_ka.sa.sa_handler = compat_ptr(handler);
+ new_ka.sa.sa_restorer = compat_ptr(restorer);
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user(ptr_to_compat(old_ka.sa.sa_handler),
+ &oact->sa_handler) ||
+ __put_user(ptr_to_compat(old_ka.sa.sa_restorer),
+ &oact->sa_restorer) ||
+ __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+ __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+ return -EFAULT;
+ }
+ return ret;
+}
+#endif
#ifdef __ARCH_WANT_SYS_SGETMASK
return -ERESTARTNOHAND;
}
-#ifdef __ARCH_WANT_SYS_RT_SIGSUSPEND
/**
* sys_rt_sigsuspend - replace the signal mask for a value with the
* @unewset value until a signal is received
return -EFAULT;
return sigsuspend(&newset);
}
-#endif /* __ARCH_WANT_SYS_RT_SIGSUSPEND */
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(rt_sigsuspend, compat_sigset_t __user *, unewset, compat_size_t, sigsetsize)
+{
+#ifdef __BIG_ENDIAN
+ sigset_t newset;
+ compat_sigset_t newset32;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
+ return -EFAULT;
+ sigset_from_compat(&newset, &newset32);
+ return sigsuspend(&newset);
+#else
+ /* on little-endian bitmaps don't care about granularity */
+ return sys_rt_sigsuspend((sigset_t __user *)unewset, sigsetsize);
+#endif
+}
+#endif
+
+#ifdef CONFIG_OLD_SIGSUSPEND
+SYSCALL_DEFINE1(sigsuspend, old_sigset_t, mask)
+{
+ sigset_t blocked;
+ siginitset(&blocked, mask);
+ return sigsuspend(&blocked);
+}
+#endif
+#ifdef CONFIG_OLD_SIGSUSPEND3
+SYSCALL_DEFINE3(sigsuspend, int, unused1, int, unused2, old_sigset_t, mask)
+{
+ sigset_t blocked;
+ siginitset(&blocked, mask);
+ return sigsuspend(&blocked);
+}
+#endif
__attribute__((weak)) const char *arch_vma_name(struct vm_area_struct *vma)
{
projects / karo-tx-linux.git / blobdiff