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Commit a274bd49 authored by Al Viro's avatar Al Viro
Browse files

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: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent bdc40abf

arch/sparc/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -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

arch/sparc/include/uapi/asm/signal.h

+1 −1
Original line number Diff line number Diff line
@@ -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;

arch/sparc/kernel/sys32.S

+1 −1
Original line number Diff line number Diff line
@@ -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)

arch/sparc/kernel/sys_sparc32.c

+4 −33
Original line number Diff line number Diff line
@@ -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,

arch/sparc/kernel/sys_sparc_32.c

+4 −33
Original line number Diff line number Diff line
@@ -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,