From: Richard Weinberger <richard@nod.at>
To: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org, viro@zeniv.linux.org.uk,
vgupta@synopsys.com, catalin.marinas@arm.com,
will.deacon@arm.com, hskinnemoen@gmail.com, egtvedt@samfundet.no,
vapier@gentoo.org, msalter@redhat.com, a-jacquiot@ti.com,
starvik@axis.com, jesper.nilsson@axis.com, dhowells@redhat.com,
rkuo@codeaurora.org, tony.luck@intel.com, fenghua.yu@intel.com,
takata@linux-m32r.org, geert@linux-m68k.org,
james.hogan@imgtec.com, monstr@monstr.eu,
yasutake.koichi@jp.panasonic.com, ralf@linux-mips.org,
jonas@southpole.se, jejb@parisc-linux.org, deller@gmx.de,
benh@kernel.crashing.org, paulus@samba.org,
schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com,
liqin.linux@gmail.com, lennox.wu@gmail.com, lethal@linux-sh.org,
cmetcalf@tilera.com, gxt@mprc.pku.edu.cn,
linux-xtensa@linux-xtensa.org, akpm@linux-foundation.org,
oleg@redhat.com, tj@kernel.org,
Richard Weinberger <richard@nod.at>
Subject: [PATCH 07/29] frv: Use get_signal() signal_setup_done()
Date: Tue, 8 Oct 2013 13:32:20 +0200 [thread overview]
Message-ID: <1381231942-4145-2-git-send-email-richard@nod.at> (raw)
In-Reply-To: <1381231942-4145-1-git-send-email-richard@nod.at>
Use the more generic functions get_signal() signal_setup_done()
for signal delivery.
Signed-off-by: Richard Weinberger <richard@nod.at>
---
arch/frv/kernel/signal.c | 99 +++++++++++++++++++-----------------------------
1 file changed, 40 insertions(+), 59 deletions(-)
diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c
index d822700..8e37cf2 100644
--- a/arch/frv/kernel/signal.c
+++ b/arch/frv/kernel/signal.c
@@ -180,17 +180,17 @@ static inline void __user *get_sigframe(struct k_sigaction *ka,
/*
*
*/
-static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
+static int setup_frame(struct ksignal *ksig, sigset_t *set)
{
struct sigframe __user *frame;
- int rsig;
+ int rsig, sig = ksig->sig;
set_fs(USER_DS);
- frame = get_sigframe(ka, sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
rsig = sig;
if (sig < 32 &&
@@ -199,22 +199,22 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
rsig = __current_thread_info->exec_domain->signal_invmap[sig];
if (__put_user(rsig, &frame->sig) < 0)
- goto give_sigsegv;
+ return -EFAULT;
if (setup_sigcontext(&frame->sc, set->sig[0]))
- goto give_sigsegv;
+ return -EFAULT;
if (_NSIG_WORDS > 1) {
if (__copy_to_user(frame->extramask, &set->sig[1],
sizeof(frame->extramask)))
- goto give_sigsegv;
+ return -EFAULT;
}
/* Set up to return from userspace. If provided, use a stub
* already in userspace. */
- if (ka->sa.sa_flags & SA_RESTORER) {
- if (__put_user(ka->sa.sa_restorer, &frame->pretcode) < 0)
- goto give_sigsegv;
+ if (ksig->ka.sa.sa_flags & SA_RESTORER) {
+ if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode) < 0)
+ return -EFAULT;
}
else {
/* Set up the following code on the stack:
@@ -224,7 +224,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) ||
__put_user(0x8efc0000|__NR_sigreturn, &frame->retcode[0]) ||
__put_user(0xc0700000, &frame->retcode[1]))
- goto give_sigsegv;
+ return -EFAULT;
flush_icache_range((unsigned long) frame->retcode,
(unsigned long) (frame->retcode + 2));
@@ -233,14 +233,14 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
/* Set up registers for the signal handler */
if (current->personality & FDPIC_FUNCPTRS) {
struct fdpic_func_descriptor __user *funcptr =
- (struct fdpic_func_descriptor __user *) ka->sa.sa_handler;
+ (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler;
struct fdpic_func_descriptor desc;
if (copy_from_user(&desc, funcptr, sizeof(desc)))
- goto give_sigsegv;
+ return -EFAULT;
__frame->pc = desc.text;
__frame->gr15 = desc.GOT;
} else {
- __frame->pc = (unsigned long) ka->sa.sa_handler;
+ __frame->pc = (unsigned long) ksig->ka.sa.sa_handler;
__frame->gr15 = 0;
}
@@ -255,29 +255,23 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
#endif
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
-
} /* end setup_frame() */
/*****************************************************************************/
/*
*
*/
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
- sigset_t *set)
+static int setup_rt_frame(struct ksignal *ksig, sigset_t *set)
{
struct rt_sigframe __user *frame;
- int rsig;
+ int rsig, sig = ksig->sig;
set_fs(USER_DS);
- frame = get_sigframe(ka, sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- goto give_sigsegv;
+ return -EFAULT;
rsig = sig;
if (sig < 32 &&
@@ -288,28 +282,28 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
if (__put_user(rsig, &frame->sig) ||
__put_user(&frame->info, &frame->pinfo) ||
__put_user(&frame->uc, &frame->puc))
- goto give_sigsegv;
+ return -EFAULT;
- if (copy_siginfo_to_user(&frame->info, info))
- goto give_sigsegv;
+ if (copy_siginfo_to_user(&frame->info, &ksig->info))
+ return -EFAULT;
/* Create the ucontext. */
if (__put_user(0, &frame->uc.uc_flags) ||
__put_user(NULL, &frame->uc.uc_link) ||
__save_altstack(&frame->uc.uc_stack, __frame->sp))
- goto give_sigsegv;
+ return -EFAULT;
if (setup_sigcontext(&frame->uc.uc_mcontext, set->sig[0]))
- goto give_sigsegv;
+ return -EFAULT;
if (__copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)))
- goto give_sigsegv;
+ return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
* already in userspace. */
- if (ka->sa.sa_flags & SA_RESTORER) {
- if (__put_user(ka->sa.sa_restorer, &frame->pretcode))
- goto give_sigsegv;
+ if (ksig->ka.sa.sa_flags & SA_RESTORER) {
+ if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode))
+ return -EFAULT;
}
else {
/* Set up the following code on the stack:
@@ -319,7 +313,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) ||
__put_user(0x8efc0000|__NR_rt_sigreturn, &frame->retcode[0]) ||
__put_user(0xc0700000, &frame->retcode[1]))
- goto give_sigsegv;
+ return -EFAULT;
flush_icache_range((unsigned long) frame->retcode,
(unsigned long) (frame->retcode + 2));
@@ -328,14 +322,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Set up registers for signal handler */
if (current->personality & FDPIC_FUNCPTRS) {
struct fdpic_func_descriptor __user *funcptr =
- (struct fdpic_func_descriptor __user *) ka->sa.sa_handler;
+ (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler;
struct fdpic_func_descriptor desc;
if (copy_from_user(&desc, funcptr, sizeof(desc)))
- goto give_sigsegv;
+ return -EFAULT;
__frame->pc = desc.text;
__frame->gr15 = desc.GOT;
} else {
- __frame->pc = (unsigned long) ka->sa.sa_handler;
+ __frame->pc = (unsigned long) ksig->ka.sa.sa_handler;
__frame->gr15 = 0;
}
@@ -349,21 +343,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sig, current->comm, current->pid, frame, __frame->pc,
frame->pretcode);
#endif
-
return 0;
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
-
} /* end setup_rt_frame() */
/*****************************************************************************/
/*
* OK, we're invoking a handler
*/
-static void handle_signal(unsigned long sig, siginfo_t *info,
- struct k_sigaction *ka)
+static void handle_signal(struct ksignal *ksig)
{
sigset_t *oldset = sigmask_to_save();
int ret;
@@ -378,7 +366,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
break;
case -ERESTARTSYS:
- if (!(ka->sa.sa_flags & SA_RESTART)) {
+ if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
__frame->gr8 = -EINTR;
break;
}
@@ -392,16 +380,12 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
}
/* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(sig, ka, info, oldset);
+ if (ksig->ka.sa.sa_flags & SA_SIGINFO)
+ ret = setup_rt_frame(ksig, oldset);
else
- ret = setup_frame(sig, ka, oldset);
-
- if (ret)
- return;
+ ret = setup_frame(ksig, oldset);
- signal_delivered(sig, info, ka, __frame,
- test_thread_flag(TIF_SINGLESTEP));
+ signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
} /* end handle_signal() */
/*****************************************************************************/
@@ -412,13 +396,10 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
*/
static void do_signal(void)
{
- struct k_sigaction ka;
- siginfo_t info;
- int signr;
+ struct ksignal ksig;
- signr = get_signal_to_deliver(&info, &ka, __frame, NULL);
- if (signr > 0) {
- handle_signal(signr, &info, &ka);
+ if (get_signal(&ksig)) {
+ handle_signal(&ksig);
return;
}
--
1.8.1.4
next prev parent reply other threads:[~2013-10-08 11:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-08 11:32 [PATCH 06/29] cris: Use get_signal() signal_setup_done() Richard Weinberger
2013-10-08 11:32 ` Richard Weinberger [this message]
2013-10-08 11:32 ` [PATCH 08/29] h8300: " Richard Weinberger
2013-10-08 11:32 ` Richard Weinberger
2013-10-08 11:32 ` [PATCH 09/29] hexagon: " Richard Weinberger
2013-10-18 0:18 ` rkuo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1381231942-4145-2-git-send-email-richard@nod.at \
--to=richard@nod.at \
--cc=a-jacquiot@ti.com \
--cc=akpm@linux-foundation.org \
--cc=benh@kernel.crashing.org \
--cc=catalin.marinas@arm.com \
--cc=cmetcalf@tilera.com \
--cc=deller@gmx.de \
--cc=dhowells@redhat.com \
--cc=egtvedt@samfundet.no \
--cc=fenghua.yu@intel.com \
--cc=geert@linux-m68k.org \
--cc=gxt@mprc.pku.edu.cn \
--cc=heiko.carstens@de.ibm.com \
--cc=hskinnemoen@gmail.com \
--cc=james.hogan@imgtec.com \
--cc=jejb@parisc-linux.org \
--cc=jesper.nilsson@axis.com \
--cc=jonas@southpole.se \
--cc=lennox.wu@gmail.com \
--cc=lethal@linux-sh.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-xtensa@linux-xtensa.org \
--cc=liqin.linux@gmail.com \
--cc=monstr@monstr.eu \
--cc=msalter@redhat.com \
--cc=oleg@redhat.com \
--cc=paulus@samba.org \
--cc=ralf@linux-mips.org \
--cc=rkuo@codeaurora.org \
--cc=schwidefsky@de.ibm.com \
--cc=starvik@axis.com \
--cc=takata@linux-m32r.org \
--cc=tj@kernel.org \
--cc=tony.luck@intel.com \
--cc=vapier@gentoo.org \
--cc=vgupta@synopsys.com \
--cc=viro@zeniv.linux.org.uk \
--cc=will.deacon@arm.com \
--cc=yasutake.koichi@jp.panasonic.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).