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Diffstat (limited to 'arch/x86/um/signal.c')
-rw-r--r--arch/x86/um/signal.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index 4883b954601..a508cea1350 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -156,6 +156,9 @@ static int copy_sc_from_user(struct pt_regs *regs,
struct sigcontext sc;
int err, pid;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
err = copy_from_user(&sc, from, sizeof(sc));
if (err)
return err;
@@ -410,9 +413,9 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
PT_REGS_SP(regs) = (unsigned long) frame;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
- PT_REGS_EAX(regs) = (unsigned long) sig;
- PT_REGS_EDX(regs) = (unsigned long) 0;
- PT_REGS_ECX(regs) = (unsigned long) 0;
+ PT_REGS_AX(regs) = (unsigned long) sig;
+ PT_REGS_DX(regs) = (unsigned long) 0;
+ PT_REGS_CX(regs) = (unsigned long) 0;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
ptrace_notify(SIGTRAP);
@@ -460,9 +463,9 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
PT_REGS_SP(regs) = (unsigned long) frame;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
- PT_REGS_EAX(regs) = (unsigned long) sig;
- PT_REGS_EDX(regs) = (unsigned long) &frame->info;
- PT_REGS_ECX(regs) = (unsigned long) &frame->uc;
+ PT_REGS_AX(regs) = (unsigned long) sig;
+ PT_REGS_DX(regs) = (unsigned long) &frame->info;
+ PT_REGS_CX(regs) = (unsigned long) &frame->uc;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
ptrace_notify(SIGTRAP);
@@ -483,7 +486,6 @@ long sys_sigreturn(struct pt_regs *regs)
copy_from_user(&set.sig[1], extramask, sig_size))
goto segfault;
- sigdelsetmask(&set, ~_BLOCKABLE);
set_current_blocked(&set);
if (copy_sc_from_user(&current->thread.regs, sc))
@@ -541,8 +543,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
set->sig[0]);
err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate);
if (sizeof(*set) == 16) {
- __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
- __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
+ err |= __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
+ err |= __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
}
else
err |= __copy_to_user(&frame->uc.uc_sigmask, set,
@@ -570,17 +572,17 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
}
PT_REGS_SP(regs) = (unsigned long) frame;
- PT_REGS_RDI(regs) = sig;
+ PT_REGS_DI(regs) = sig;
/* In case the signal handler was declared without prototypes */
- PT_REGS_RAX(regs) = 0;
+ PT_REGS_AX(regs) = 0;
/*
* This also works for non SA_SIGINFO handlers because they expect the
* next argument after the signal number on the stack.
*/
- PT_REGS_RSI(regs) = (unsigned long) &frame->info;
- PT_REGS_RDX(regs) = (unsigned long) &frame->uc;
- PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler;
+ PT_REGS_SI(regs) = (unsigned long) &frame->info;
+ PT_REGS_DX(regs) = (unsigned long) &frame->uc;
+ PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
out:
return err;
}
@@ -597,7 +599,6 @@ long sys_rt_sigreturn(struct pt_regs *regs)
if (copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
goto segfault;
- sigdelsetmask(&set, ~_BLOCKABLE);
set_current_blocked(&set);
if (copy_sc_from_user(&current->thread.regs, &uc->uc_mcontext))