aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2012-12-25 19:14:55 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-03 18:16:27 -0500
commit5b3eb3ade4444c3b1419ffa23598a57f6f4bf494 (patch)
tree1f25f5eaf46fac683c502562347cb900ec946978
parentx86: switch to generic compat rt_sigaction() (diff)
downloadlinux-dev-5b3eb3ade4444c3b1419ffa23598a57f6f4bf494.tar.xz
linux-dev-5b3eb3ade4444c3b1419ffa23598a57f6f4bf494.zip
x86: switch to generic old sigaction
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
-rw-r--r--arch/x86/Kconfig2
-rw-r--r--arch/x86/ia32/sys_ia32.c39
-rw-r--r--arch/x86/include/asm/ia32.h7
-rw-r--r--arch/x86/include/asm/signal.h9
-rw-r--r--arch/x86/include/asm/sys_ia32.h3
-rw-r--r--arch/x86/include/asm/syscalls.h2
-rw-r--r--arch/x86/kernel/signal.c47
-rw-r--r--arch/x86/syscalls/syscall_32.tbl2
-rw-r--r--arch/x86/um/Kconfig1
-rw-r--r--arch/x86/um/Makefile4
-rw-r--r--arch/x86/um/syscalls_32.c38
11 files changed, 6 insertions, 148 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0271a1411af3..87d09175a0a9 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -118,6 +118,8 @@ config X86
select GENERIC_COMPAT_RT_SIGQUEUEINFO
select GENERIC_COMPAT_RT_SIGPENDING
select OLD_SIGSUSPEND3 if X86_32 || IA32_EMULATION
+ select OLD_SIGACTION if X86_32
+ select COMPAT_OLD_SIGACTION if IA32_EMULATION
config INSTRUCTION_DECODER
def_bool y
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index ffe9751b1486..592f5a9a9c0e 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -172,45 +172,6 @@ asmlinkage long sys32_mprotect(unsigned long start, size_t len,
return sys_mprotect(start, len, prot);
}
-asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act,
- struct old_sigaction32 __user *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
- if (act) {
- compat_old_sigset_t mask;
- compat_uptr_t handler, restorer;
-
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
- __get_user(restorer, &act->sa_restorer) ||
- __get_user(mask, &act->sa_mask))
- return -EFAULT;
-
- new_ka.sa.sa_handler = compat_ptr(handler);
- new_ka.sa.sa_restorer = compat_ptr(restorer);
-
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(ptr_to_compat(old_ka.sa.sa_handler),
- &oact->sa_handler) ||
- __put_user(ptr_to_compat(old_ka.sa.sa_restorer),
- &oact->sa_restorer) ||
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
- return -EFAULT;
- }
-
- return ret;
-}
-
asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int __user *stat_addr,
int options)
{
diff --git a/arch/x86/include/asm/ia32.h b/arch/x86/include/asm/ia32.h
index 259372d1ee96..d0e8e0141041 100644
--- a/arch/x86/include/asm/ia32.h
+++ b/arch/x86/include/asm/ia32.h
@@ -13,13 +13,6 @@
#include <asm/sigcontext32.h>
/* signal.h */
-struct old_sigaction32 {
- unsigned int sa_handler; /* Really a pointer, but need to deal
- with 32 bits */
- compat_old_sigset_t sa_mask; /* A 32 bit mask */
- unsigned int sa_flags;
- unsigned int sa_restorer; /* Another 32 bit pointer */
-};
struct ucontext_ia32 {
unsigned int uc_flags;
diff --git a/arch/x86/include/asm/signal.h b/arch/x86/include/asm/signal.h
index 9bda8224f3d5..35e67a457182 100644
--- a/arch/x86/include/asm/signal.h
+++ b/arch/x86/include/asm/signal.h
@@ -34,15 +34,6 @@ extern void do_notify_resume(struct pt_regs *, void *, __u32);
#define __ARCH_HAS_SA_RESTORER
-#ifdef __i386__
-struct old_sigaction {
- __sighandler_t sa_handler;
- old_sigset_t sa_mask;
- unsigned long sa_flags;
- __sigrestore_t sa_restorer;
-};
-
-#endif /* !__i386__ */
#include <asm/sigcontext.h>
#ifdef __i386__
diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h
index 2bf18f1158bc..0218d917f509 100644
--- a/arch/x86/include/asm/sys_ia32.h
+++ b/arch/x86/include/asm/sys_ia32.h
@@ -32,9 +32,6 @@ struct mmap_arg_struct32;
asmlinkage long sys32_mmap(struct mmap_arg_struct32 __user *);
asmlinkage long sys32_mprotect(unsigned long, size_t, unsigned long);
-struct old_sigaction32;
-asmlinkage long sys32_sigaction(int, struct old_sigaction32 __user *,
- struct old_sigaction32 __user *);
asmlinkage long sys32_alarm(unsigned int);
asmlinkage long sys32_waitpid(compat_pid_t, unsigned int __user *, int);
diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h
index 7ed7dec7fb0e..6cf0a9cc60cd 100644
--- a/arch/x86/include/asm/syscalls.h
+++ b/arch/x86/include/asm/syscalls.h
@@ -34,8 +34,6 @@ asmlinkage int sys_get_thread_area(struct user_desc __user *);
#ifdef CONFIG_X86_32
/* kernel/signal.c */
-asmlinkage int sys_sigaction(int, const struct old_sigaction __user *,
- struct old_sigaction __user *);
unsigned long sys_sigreturn(void);
/* kernel/vm86_32.c */
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 057712901509..d5b1f8a912ff 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -535,53 +535,6 @@ static int x32_setup_rt_frame(int sig, struct k_sigaction *ka,
return 0;
}
-#ifdef CONFIG_X86_32
-asmlinkage int
-sys_sigaction(int sig, const struct old_sigaction __user *act,
- struct old_sigaction __user *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret = 0;
-
- if (act) {
- old_sigset_t mask;
-
- if (!access_ok(VERIFY_READ, act, sizeof(*act)))
- return -EFAULT;
-
- get_user_try {
- get_user_ex(new_ka.sa.sa_handler, &act->sa_handler);
- get_user_ex(new_ka.sa.sa_flags, &act->sa_flags);
- get_user_ex(mask, &act->sa_mask);
- get_user_ex(new_ka.sa.sa_restorer, &act->sa_restorer);
- } get_user_catch(ret);
-
- if (ret)
- return -EFAULT;
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
- return -EFAULT;
-
- put_user_try {
- put_user_ex(old_ka.sa.sa_handler, &oact->sa_handler);
- put_user_ex(old_ka.sa.sa_flags, &oact->sa_flags);
- put_user_ex(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- put_user_ex(old_ka.sa.sa_restorer, &oact->sa_restorer);
- } put_user_catch(ret);
-
- if (ret)
- return -EFAULT;
- }
-
- return ret;
-}
-#endif /* CONFIG_X86_32 */
-
/*
* Do a signal return; undo the signal stack.
*/
diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
index 2fada84c16ab..f2fe78ff22cc 100644
--- a/arch/x86/syscalls/syscall_32.tbl
+++ b/arch/x86/syscalls/syscall_32.tbl
@@ -73,7 +73,7 @@
64 i386 getppid sys_getppid
65 i386 getpgrp sys_getpgrp
66 i386 setsid sys_setsid
-67 i386 sigaction sys_sigaction sys32_sigaction
+67 i386 sigaction sys_sigaction compat_sys_sigaction
68 i386 sgetmask sys_sgetmask
69 i386 ssetmask sys_ssetmask
70 i386 setreuid sys_setreuid16
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index a3725824449e..cf0f2731484e 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -26,6 +26,7 @@ config X86_32
select MODULES_USE_ELF_REL
select CLONE_BACKWARDS
select OLD_SIGSUSPEND3
+ select OLD_SIGACTION
config X86_64
def_bool 64BIT
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index 5d065b2222d3..eafa324eb7a5 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -10,7 +10,7 @@ endif
obj-y = bug.o bugs_$(BITS).o delay.o fault.o ksyms.o ldt.o \
ptrace_$(BITS).o ptrace_user.o setjmp_$(BITS).o signal.o \
- stub_$(BITS).o stub_segv.o syscalls_$(BITS).o \
+ stub_$(BITS).o stub_segv.o \
sys_call_table_$(BITS).o sysrq_$(BITS).o tls_$(BITS).o \
mem_$(BITS).o subarch.o os-$(OS)/
@@ -25,7 +25,7 @@ subarch-$(CONFIG_HIGHMEM) += ../mm/highmem_32.o
else
-obj-y += vdso/
+obj-y += syscalls_64.o vdso/
subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o ../lib/thunk_64.o \
../lib/rwsem.o
diff --git a/arch/x86/um/syscalls_32.c b/arch/x86/um/syscalls_32.c
deleted file mode 100644
index e8bcea99acdb..000000000000
--- a/arch/x86/um/syscalls_32.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#include <linux/syscalls.h>
-#include <sysdep/syscalls.h>
-
-long sys_sigaction(int sig, const struct old_sigaction __user *act,
- struct old_sigaction __user *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
- if (act) {
- old_sigset_t mask;
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
- __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
- __get_user(mask, &act->sa_mask))
- return -EFAULT;
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
- return -EFAULT;
- }
-
- return ret;
-}