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authorAl Viro <viro@zeniv.linux.org.uk>2012-12-25 19:18:40 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-03 22:43:35 -0500
commita274bd498ce4b57294034d428b801b2bca3af774 (patch)
tree18ec27dca96e7a38f0bc0db67012d8954ae487fc /arch/sparc
parentbdc40abf070eab82d27de99ef5ff62a1c5de238d (diff)
downloadlinux-linaro-stable-a274bd498ce4b57294034d428b801b2bca3af774.tar.gz
sparc: switch to use of generic old sigaction
note that due to historical accident we do *not* directly take generic versions - need to check and invert the sign of signal number first. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/Kconfig2
-rw-r--r--arch/sparc/include/uapi/asm/signal.h2
-rw-r--r--arch/sparc/kernel/sys32.S2
-rw-r--r--arch/sparc/kernel/sys_sparc32.c37
-rw-r--r--arch/sparc/kernel/sys_sparc_32.c37
-rw-r--r--arch/sparc/kernel/systbls_32.S2
6 files changed, 13 insertions, 69 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 9d2c395440df..1a8ef82b3475 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -53,6 +53,7 @@ config SPARC32
select GENERIC_ATOMIC64
select CLZ_TAB
select HAVE_UID16
+ select OLD_SIGACTION
config SPARC64
def_bool 64BIT
@@ -549,6 +550,7 @@ config COMPAT
select COMPAT_BINFMT_ELF
select HAVE_UID16
select ARCH_WANT_OLD_COMPAT_IPC
+ select COMPAT_OLD_SIGACTION
config SYSVIPC_COMPAT
bool
diff --git a/arch/sparc/include/uapi/asm/signal.h b/arch/sparc/include/uapi/asm/signal.h
index 284836f0b7dc..f387400fcfdf 100644
--- a/arch/sparc/include/uapi/asm/signal.h
+++ b/arch/sparc/include/uapi/asm/signal.h
@@ -160,7 +160,6 @@ struct __new_sigaction {
__sigrestore_t sa_restorer; /* not used by Linux/SPARC yet */
__new_sigset_t sa_mask;
};
-#endif
struct __old_sigaction {
__sighandler_t sa_handler;
@@ -168,6 +167,7 @@ struct __old_sigaction {
unsigned long sa_flags;
void (*sa_restorer)(void); /* not used by Linux/SPARC yet */
};
+#endif
typedef struct sigaltstack {
void __user *ss_sp;
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
index 8475a474273a..9d2e99658aff 100644
--- a/arch/sparc/kernel/sys32.S
+++ b/arch/sparc/kernel/sys32.S
@@ -60,7 +60,7 @@ SIGN1(sys32_setitimer, compat_sys_setitimer, %o0)
SIGN1(sys32_getitimer, compat_sys_getitimer, %o0)
SIGN1(sys32_sethostname, sys_sethostname, %o1)
SIGN1(sys32_swapon, sys_swapon, %o1)
-SIGN1(sys32_sigaction, compat_sys_sigaction, %o0)
+SIGN1(sys32_sigaction, compat_sys_sparc_sigaction, %o0)
SIGN1(sys32_rt_sigaction, compat_sys_rt_sigaction, %o0)
SIGN1(sys32_sigprocmask, compat_sys_sigprocmask, %o0)
SIGN1(sys32_rt_sigprocmask, compat_sys_rt_sigprocmask, %o0)
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c
index 4e96771a1b59..dcce0a6216cf 100644
--- a/arch/sparc/kernel/sys_sparc32.c
+++ b/arch/sparc/kernel/sys_sparc32.c
@@ -211,41 +211,12 @@ asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
return sys_sysfs(option, arg1, arg2);
}
-asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
- struct old_sigaction32 __user *oact)
+COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig,
+ struct compat_old_sigaction __user *,act,
+ struct compat_old_sigaction __user *,oact)
{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
WARN_ON_ONCE(sig >= 0);
- sig = -sig;
-
- if (act) {
- compat_old_sigset_t mask;
- u32 u_handler, u_restorer;
-
- ret = get_user(u_handler, &act->sa_handler);
- new_ka.sa.sa_handler = compat_ptr(u_handler);
- ret |= __get_user(u_restorer, &act->sa_restorer);
- new_ka.sa.sa_restorer = compat_ptr(u_restorer);
- ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- ret |= __get_user(mask, &act->sa_mask);
- if (ret)
- return ret;
- new_ka.ka_restorer = NULL;
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
- ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
- ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
-
- return ret;
+ return compat_sys_sigaction(-sig, act, oact);
}
COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig,
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index cdd2d7035930..3a8d1844402e 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -160,41 +160,12 @@ sparc_breakpoint (struct pt_regs *regs)
#endif
}
-asmlinkage int
-sparc_sigaction (int sig, const struct old_sigaction __user *act,
- struct old_sigaction __user *oact)
+SYSCALL_DEFINE3(sparc_sigaction, int, sig,
+ struct old_sigaction __user *,act,
+ struct old_sigaction __user *,oact)
{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
WARN_ON_ONCE(sig >= 0);
- sig = -sig;
-
- if (act) {
- unsigned long 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);
- new_ka.ka_restorer = NULL;
- }
-
- 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;
+ return sys_sigaction(-sig, act, oact);
}
SYSCALL_DEFINE5(rt_sigaction, int, sig,
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index 6ac43c36bbbf..7b87171ecf1e 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -55,7 +55,7 @@ sys_call_table:
/*180*/ .long sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_sigpending, sys_ni_syscall
/*185*/ .long sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sys_newuname
/*190*/ .long sys_init_module, sys_personality, sparc_remap_file_pages, sys_epoll_create, sys_epoll_ctl
-/*195*/ .long sys_epoll_wait, sys_ioprio_set, sys_getppid, sparc_sigaction, sys_sgetmask
+/*195*/ .long sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_sparc_sigaction, sys_sgetmask
/*200*/ .long sys_ssetmask, sys_sigsuspend, sys_newlstat, sys_uselib, sys_old_readdir
/*205*/ .long sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_fadvise64
/*210*/ .long sys_fadvise64_64, sys_tgkill, sys_waitpid, sys_swapoff, sys_sysinfo