| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1393804646-7797-3-git-send-email-richard@nod.at>
Date: Mon, 3 Mar 2014 00:57:17 +0100
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, cmetcalf@...era.com, gxt@...c.pku.edu.cn,
linux-xtensa@...ux-xtensa.org, akpm@...ux-foundation.org,
oleg@...hat.com, tj@...nel.org, hch@...radead.org,
Richard Weinberger <richard@....at>
Subject: [PATCH 13/44] microblaze: 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/microblaze/kernel/signal.c | 48 +++++++++++++++--------------------------
1 file changed, 17 insertions(+), 31 deletions(-)
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index d26d7e7..a34da52 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -156,11 +156,11 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
return (void __user *)((sp - frame_size) & -8UL);
}
-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 __user *frame;
- int err = 0;
+ int err = 0, sig = ksig->sig;
int signal;
unsigned long address = 0;
#ifdef CONFIG_MMU
@@ -168,10 +168,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
pte_t *ptep;
#endif
- 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;
signal = current_thread_info()->exec_domain
&& current_thread_info()->exec_domain->signal_invmap
@@ -179,8 +179,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
? current_thread_info()->exec_domain->signal_invmap[sig]
: sig;
- if (info)
- 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);
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
@@ -227,7 +227,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
flush_dcache_range(address, address + 8);
#endif
if (err)
- goto give_sigsegv;
+ return -EFAULT;
/* Set up registers for signal handler */
regs->r1 = (unsigned long) frame;
@@ -237,7 +237,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->r6 = (unsigned long) &frame->info; /* arg 1: siginfo */
regs->r7 = (unsigned long) &frame->uc; /* arg2: ucontext */
/* Offset to handle microblaze rtid r14, 0 */
- regs->pc = (unsigned long)ka->sa.sa_handler;
+ regs->pc = (unsigned long)ksig->ka.sa.sa_handler;
set_fs(USER_DS);
@@ -247,10 +247,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
#endif
return 0;
-
-give_sigsegv:
- force_sigsegv(sig, current);
- return -EFAULT;
}
/* Handle restarting system calls */
@@ -283,23 +279,15 @@ do_restart:
*/
static void
-handle_signal(unsigned long sig, struct k_sigaction *ka,
- siginfo_t *info, struct pt_regs *regs)
+handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(sig, ka, info, oldset, regs);
- else
- ret = setup_rt_frame(sig, ka, NULL, oldset, regs);
+ ret = setup_rt_frame(ksig, oldset, regs);
- if (ret)
- return;
-
- signal_delivered(sig, info, ka, regs,
- test_thread_flag(TIF_SINGLESTEP));
+ signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
}
/*
@@ -313,21 +301,19 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
*/
static void do_signal(struct pt_regs *regs, int in_syscall)
{
- siginfo_t info;
- int signr;
- struct k_sigaction ka;
+ struct ksignal ksig;
+
#ifdef DEBUG_SIG
pr_info("do signal: %p %d\n", regs, in_syscall);
pr_info("do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1,
regs->r12, current_thread_info()->flags);
#endif
- signr = get_signal_to_deliver(&info, &ka, regs, NULL);
- if (signr > 0) {
+ if (get_signal(&ksig)) {
/* Whee! Actually deliver the signal. */
if (in_syscall)
- handle_restart(regs, &ka, 1);
- handle_signal(signr, &ka, &info, regs);
+ handle_restart(regs, &ksig.ka, 1);
+ handle_signal(&ksig, regs);
return;
}
--
1.8.4.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists