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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 18:50:11 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 18:50:11 -0800
commit9e2d59ad580d590134285f361a0e80f0e98c0207 (patch)
treef3232be75781484193413f32ec82c21f6d8eb76e /arch/avr32
parent5ce1a70e2f00f0bce0cab57f798ca354b9496169 (diff)
parent235b80226b986dabcbba844968f7807866bd0bfe (diff)
downloadop-kernel-dev-9e2d59ad580d590134285f361a0e80f0e98c0207.zip
op-kernel-dev-9e2d59ad580d590134285f361a0e80f0e98c0207.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro: "This is the first pile; another one will come a bit later and will contain SYSCALL_DEFINE-related patches. - a bunch of signal-related syscalls (both native and compat) unified. - a bunch of compat syscalls switched to COMPAT_SYSCALL_DEFINE (fixing several potential problems with missing argument validation, while we are at it) - a lot of now-pointless wrappers killed - a couple of architectures (cris and hexagon) forgot to save altstack settings into sigframe, even though they used the (uninitialized) values in sigreturn; fixed. - microblaze fixes for delivery of multiple signals arriving at once - saner set of helpers for signal delivery introduced, several architectures switched to using those." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (143 commits) x86: convert to ksignal sparc: convert to ksignal arm: switch to struct ksignal * passing alpha: pass k_sigaction and siginfo_t using ksignal pointer burying unused conditionals make do_sigaltstack() static arm64: switch to generic old sigaction() (compat-only) arm64: switch to generic compat rt_sigaction() arm64: switch compat to generic old sigsuspend arm64: switch to generic compat rt_sigqueueinfo() arm64: switch to generic compat rt_sigpending() arm64: switch to generic compat rt_sigprocmask() arm64: switch to generic sigaltstack sparc: switch to generic old sigsuspend sparc: COMPAT_SYSCALL_DEFINE does all sign-extension as well as SYSCALL_DEFINE sparc: kill sign-extending wrappers for native syscalls kill sparc32_open() sparc: switch to use of generic old sigaction sparc: switch sys_compat_rt_sigaction() to COMPAT_SYSCALL_DEFINE mips: switch to generic sys_fork() and sys_clone() ...
Diffstat (limited to 'arch/avr32')
-rw-r--r--arch/avr32/include/asm/signal.h11
-rw-r--r--arch/avr32/include/asm/unistd.h2
-rw-r--r--arch/avr32/kernel/signal.c15
-rw-r--r--arch/avr32/kernel/syscall-stubs.S6
-rw-r--r--arch/avr32/kernel/syscall_table.S2
5 files changed, 4 insertions, 32 deletions
diff --git a/arch/avr32/include/asm/signal.h b/arch/avr32/include/asm/signal.h
index 9326d18..d875eb6 100644
--- a/arch/avr32/include/asm/signal.h
+++ b/arch/avr32/include/asm/signal.h
@@ -23,16 +23,7 @@ typedef struct {
unsigned long sig[_NSIG_WORDS];
} sigset_t;
-struct sigaction {
- __sighandler_t sa_handler;
- unsigned long sa_flags;
- __sigrestore_t sa_restorer;
- sigset_t sa_mask; /* mask last for extensibility */
-};
-
-struct k_sigaction {
- struct sigaction sa;
-};
+#define __ARCH_HAS_SA_RESTORER
#include <asm/sigcontext.h>
#undef __HAVE_ARCH_SIG_BITOPS
diff --git a/arch/avr32/include/asm/unistd.h b/arch/avr32/include/asm/unistd.h
index 0bdf637..dc4d5a9 100644
--- a/arch/avr32/include/asm/unistd.h
+++ b/arch/avr32/include/asm/unistd.h
@@ -37,8 +37,6 @@
#define __ARCH_WANT_SYS_GETPGRP
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_GETPGRP
-#define __ARCH_WANT_SYS_RT_SIGACTION
-#define __ARCH_WANT_SYS_RT_SIGSUSPEND
#define __ARCH_WANT_SYS_FORK
#define __ARCH_WANT_SYS_VFORK
#define __ARCH_WANT_SYS_CLONE
diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c
index 5e01c3a..b80c0b3 100644
--- a/arch/avr32/kernel/signal.c
+++ b/arch/avr32/kernel/signal.c
@@ -21,12 +21,6 @@
#include <asm/ucontext.h>
#include <asm/syscalls.h>
-asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
- struct pt_regs *regs)
-{
- return do_sigaltstack(uss, uoss, regs->sp);
-}
-
struct rt_sigframe
{
struct siginfo info;
@@ -91,7 +85,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
+ if (restore_altstack(&frame->uc.uc_stack))
goto badframe;
pr_debug("Context restored: pc = %08lx, lr = %08lx, sp = %08lx\n",
@@ -175,12 +169,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Set up the ucontext */
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(NULL, &frame->uc.uc_link);
- err |= __put_user((void __user *)current->sas_ss_sp,
- &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->sp),
- &frame->uc.uc_stack.ss_flags);
- err |= __put_user(current->sas_ss_size,
- &frame->uc.uc_stack.ss_size);
+ err |= __save_altstack(&frame->uc.uc_stack, regs->sp);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S
index 275aab9..b5fc927 100644
--- a/arch/avr32/kernel/syscall-stubs.S
+++ b/arch/avr32/kernel/syscall-stubs.S
@@ -20,12 +20,6 @@ __sys_rt_sigsuspend:
mov r10, sp
rjmp sys_rt_sigsuspend
- .global __sys_sigaltstack
- .type __sys_sigaltstack,@function
-__sys_sigaltstack:
- mov r10, sp
- rjmp sys_sigaltstack
-
.global __sys_rt_sigreturn
.type __sys_rt_sigreturn,@function
__sys_rt_sigreturn:
diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
index f27bb87..017a904 100644
--- a/arch/avr32/kernel/syscall_table.S
+++ b/arch/avr32/kernel/syscall_table.S
@@ -115,7 +115,7 @@ sys_call_table:
.long sys_statfs
.long sys_fstatfs /* 100 */
.long sys_vhangup
- .long __sys_sigaltstack
+ .long sys_sigaltstack
.long sys_syslog
.long sys_setitimer
.long sys_getitimer /* 105 */
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