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Date: Tue, 8 Oct 2013 13:33:53 +0200
From: Richard Weinberger <richard@....at>
To: linux-kernel@...r.kernel.org
Cc: linux-arch@...r.kernel.org, viro@...iv.linux.org.uk,
vgupta@...opsys.com, catalin.marinas@....com, will.deacon@....com,
hskinnemoen@...il.com, egtvedt@...fundet.no, vapier@...too.org,
msalter@...hat.com, a-jacquiot@...com, starvik@...s.com,
jesper.nilsson@...s.com, dhowells@...hat.com, rkuo@...eaurora.org,
tony.luck@...el.com, fenghua.yu@...el.com, takata@...ux-m32r.org,
geert@...ux-m68k.org, james.hogan@...tec.com, monstr@...str.eu,
yasutake.koichi@...panasonic.com, ralf@...ux-mips.org,
jonas@...thpole.se, jejb@...isc-linux.org, deller@....de,
benh@...nel.crashing.org, paulus@...ba.org, schwidefsky@...ibm.com,
heiko.carstens@...ibm.com, liqin.linux@...il.com,
lennox.wu@...il.com, lethal@...ux-sh.org, cmetcalf@...era.com,
gxt@...c.pku.edu.cn, linux-xtensa@...ux-xtensa.org,
akpm@...ux-foundation.org, oleg@...hat.com, tj@...nel.org,
Richard Weinberger <richard@....at>
Subject: [PATCH 17/29] openrisc: Use get_signal() signal_setup_done()
Use the more generic functions get_signal() signal_setup_done()
for signal delivery.
Signed-off-by: Richard Weinberger <richard@....at>
---
arch/openrisc/kernel/signal.c | 53 ++++++++++++++++---------------------------
1 file changed, 20 insertions(+), 33 deletions(-)
diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c
index ae167f7..08ad302 100644
--- a/arch/openrisc/kernel/signal.c
+++ b/arch/openrisc/kernel/signal.c
@@ -173,25 +173,25 @@ static inline void __user *get_sigframe(struct k_sigaction *ka,
* trampoline which performs the syscall sigreturn, or a provided
* user-mode trampoline.
*/
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set, struct pt_regs *regs)
+static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
+ struct pt_regs *regs)
{
struct rt_sigframe *frame;
unsigned long return_ip;
int err = 0;
- frame = get_sigframe(ka, regs, sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
err |= __put_user(&frame->info, &frame->pinfo);
err |= __put_user(&frame->uc, &frame->puc);
- if (ka->sa.sa_flags & SA_SIGINFO)
- err |= copy_siginfo_to_user(&frame->info, info);
+ if (ksig->ka.sa.sa_flags & SA_SIGINFO)
+ err |= copy_siginfo_to_user(&frame->info, &ksig->info);
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Clear all the bits of the ucontext we don't use. */
err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
@@ -203,7 +203,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* trampoline - the desired return ip is the retcode itself */
return_ip = (unsigned long)&frame->retcode;
@@ -214,14 +214,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* TODO what is the current->exec_domain stuff and invmap ? */
/* Set up registers for signal handler */
- regs->pc = (unsigned long)ka->sa.sa_handler; /* what we enter NOW */
+ regs->pc = (unsigned long)ksig->ka.sa.sa_handler; /* what we enter NOW */
regs->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */
- regs->gpr[3] = (unsigned long)sig; /* arg 1: signo */
+ regs->gpr[3] = (unsigned long)ksig->sig; /* arg 1: signo */
regs->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */
regs->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */
@@ -229,25 +229,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->sp = (unsigned long)frame;
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
static inline void
-handle_signal(unsigned long sig,
- siginfo_t *info, struct k_sigaction *ka,
- struct pt_regs *regs)
+handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
int ret;
- ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs);
- if (ret)
- return;
+ ret = setup_rt_frame(ksig, sigmask_to_save(), regs);
- signal_delivered(sig, info, ka, regs,
- test_thread_flag(TIF_SINGLESTEP));
+ signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
}
/*
@@ -264,9 +255,7 @@ handle_signal(unsigned long sig,
void do_signal(struct pt_regs *regs)
{
- siginfo_t info;
- int signr;
- struct k_sigaction ka;
+ struct ksignal ksig;
/*
* We want the common case to go fast, which
@@ -277,7 +266,7 @@ void do_signal(struct pt_regs *regs)
if (!user_mode(regs))
return;
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ get_signal(&ksig);
/* If we are coming out of a syscall then we need
* to check if the syscall was interrupted and wants to be
@@ -295,12 +284,12 @@ void do_signal(struct pt_regs *regs)
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
/* Restart if there is no signal handler */
- restart = (signr <= 0);
+ restart = (ksig.sig <= 0);
break;
case -ERESTARTSYS:
/* Restart if there no signal handler or
* SA_RESTART flag is set */
- restart = (signr <= 0 || (ka.sa.sa_flags & SA_RESTART));
+ restart = (ksig.sig <= 0 || (ksig.ka.sa.sa_flags & SA_RESTART));
break;
case -ERESTARTNOINTR:
/* Always restart */
@@ -319,16 +308,14 @@ void do_signal(struct pt_regs *regs)
}
}
- if (signr <= 0) {
+ if (ksig.sig <= 0) {
/* no signal to deliver so we just put the saved sigmask
* back */
restore_saved_sigmask();
} else { /* signr > 0 */
/* Whee! Actually deliver the signal. */
- handle_signal(signr, &info, &ka, regs);
+ handle_signal(&ksig, regs);
}
-
- return;
}
asmlinkage void do_notify_resume(struct pt_regs *regs)
--
1.8.1.4
--
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