Commit 8972be4d authored by Al Viro's avatar Al Viro Committed by Geert Uytterhoeven
Browse files

m68knommu: signal.c __user annotations 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Acked-by: default avatarGreg Ungerer <gerg@uclinux.org>
Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
parent a19185c3

arch/m68knommu/kernel/signal.c

+28 −28
Original line number Diff line number Diff line
@@ -75,8 +75,8 @@ sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) 
}



asmlinkage int

sys_sigaction(int sig, const struct old_sigaction *act,

	      struct old_sigaction *oact)

sys_sigaction(int sig, const struct old_sigaction __user *act,

	      struct old_sigaction __user *oact)

{

	struct k_sigaction new_ka, old_ka;

	int ret;
@@ -107,7 +107,7 @@ sys_sigaction(int sig, const struct old_sigaction *act, 
}



asmlinkage int

sys_sigaltstack(const stack_t *uss, stack_t *uoss)

sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)

{

	return do_sigaltstack(uss, uoss, rdusp());

}
@@ -122,10 +122,10 @@ sys_sigaltstack(const stack_t *uss, stack_t *uoss) 


struct sigframe

{

	char *pretcode;

	char __user *pretcode;

	int sig;

	int code;

	struct sigcontext *psc;

	struct sigcontext __user *psc;

	char retcode[8];

	unsigned long extramask[_NSIG_WORDS-1];

	struct sigcontext sc;
@@ -133,10 +133,10 @@ struct sigframe 


struct rt_sigframe

{

	char *pretcode;

	char __user *pretcode;

	int sig;

	struct siginfo *pinfo;

	void *puc;

	struct siginfo __user *pinfo;

	void __user *puc;

	char retcode[8];

	struct siginfo info;

	struct ucontext uc;
@@ -183,7 +183,7 @@ static inline int restore_fpu_state(struct sigcontext *sc) 
#define uc_formatvec	uc_filler[FPCONTEXT_SIZE/4]

#define uc_extra	uc_filler[FPCONTEXT_SIZE/4+1]



static inline int rt_restore_fpu_state(struct ucontext *uc)

static inline int rt_restore_fpu_state(struct ucontext __user *uc)

{

	unsigned char fpstate[FPCONTEXT_SIZE];

	int context_size = 0;
@@ -202,7 +202,7 @@ static inline int rt_restore_fpu_state(struct ucontext *uc) 
		return 0;

	}



	if (__get_user(*(long *)fpstate, (long *)&uc->uc_fpstate))

	if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))

		goto out;

	if (fpstate[0]) {

		context_size = fpstate[1];
@@ -222,7 +222,7 @@ static inline int rt_restore_fpu_state(struct ucontext *uc) 
				    "m" (*fpregs.f_fpcntl));

	}

	if (context_size &&

	    __copy_from_user(fpstate + 4, (long *)&uc->uc_fpstate + 1,

	    __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,

			     context_size))

		goto out;

	__asm__ volatile (".chip 68k/68881\n\t"
@@ -237,7 +237,7 @@ static inline int rt_restore_fpu_state(struct ucontext *uc) 
#endif



static inline int

restore_sigcontext(struct pt_regs *regs, struct sigcontext *usc, void *fp,

restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp,

		   int *pd0)

{

	int formatvec;
@@ -277,10 +277,10 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext *usc, void *fp, 


static inline int

rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,

		    struct ucontext *uc, int *pd0)

		    struct ucontext __user *uc, int *pd0)

{

	int temp;

	greg_t *gregs = uc->uc_mcontext.gregs;

	greg_t __user *gregs = uc->uc_mcontext.gregs;

	unsigned long usp;

	int err;
@@ -330,7 +330,7 @@ asmlinkage int do_sigreturn(unsigned long __unused) 
	struct switch_stack *sw = (struct switch_stack *) &__unused;

	struct pt_regs *regs = (struct pt_regs *) (sw + 1);

	unsigned long usp = rdusp();

	struct sigframe *frame = (struct sigframe *)(usp - 4);

	struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);

	sigset_t set;

	int d0;
@@ -362,7 +362,7 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused) 
	struct switch_stack *sw = (struct switch_stack *) &__unused;

	struct pt_regs *regs = (struct pt_regs *) (sw + 1);

	unsigned long usp = rdusp();

	struct rt_sigframe *frame = (struct rt_sigframe *)(usp - 4);

	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4);

	sigset_t set;

	int d0;
@@ -418,7 +418,7 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) 
	}

}



static inline int rt_save_fpu_state(struct ucontext *uc, struct pt_regs *regs)

static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)

{

	unsigned char fpstate[FPCONTEXT_SIZE];

	int context_size = 0;
@@ -439,7 +439,7 @@ static inline int rt_save_fpu_state(struct ucontext *uc, struct pt_regs *regs) 
			  ".chip 68k"

			  : : "m" (*fpstate) : "memory");



	err |= __put_user(*(long *)fpstate, (long *)&uc->uc_fpstate);

	err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);

	if (fpstate[0]) {

		fpregset_t fpregs;

		context_size = fpstate[1];
@@ -456,7 +456,7 @@ static inline int rt_save_fpu_state(struct ucontext *uc, struct pt_regs *regs) 
				    sizeof(fpregs));

	}

	if (context_size)

		err |= copy_to_user((long *)&uc->uc_fpstate + 1, fpstate + 4,

		err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4,

				    context_size);

	return err;

}
@@ -481,10 +481,10 @@ static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, 
#endif

}



static inline int rt_setup_ucontext(struct ucontext *uc, struct pt_regs *regs)

static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs)

{

	struct switch_stack *sw = (struct switch_stack *)regs - 1;

	greg_t *gregs = uc->uc_mcontext.gregs;

	greg_t __user *gregs = uc->uc_mcontext.gregs;

	int err = 0;



	err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version);
@@ -512,7 +512,7 @@ static inline int rt_setup_ucontext(struct ucontext *uc, struct pt_regs *regs) 
	return err;

}



static inline void *

static inline void __user *

get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)

{

	unsigned long usp;
@@ -525,13 +525,13 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) 
		if (!sas_ss_flags(usp))

			usp = current->sas_ss_sp + current->sas_ss_size;

	}

	return (void *)((usp - frame_size) & -8UL);

	return (void __user *)((usp - frame_size) & -8UL);

}



static int setup_frame (int sig, struct k_sigaction *ka,

			 sigset_t *set, struct pt_regs *regs)

{

	struct sigframe *frame;

	struct sigframe __user *frame;

	struct sigcontext context;

	int err = 0;
@@ -592,7 +592,7 @@ static int setup_frame (int sig, struct k_sigaction *ka, 
static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,

			    sigset_t *set, struct pt_regs *regs)

{

	struct rt_sigframe *frame;

	struct rt_sigframe __user *frame;

	int err = 0;



	frame = get_sigframe(ka, regs, sizeof(*frame));
@@ -609,8 +609,8 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, 


	/* Create the ucontext.  */

	err |= __put_user(0, &frame->uc.uc_flags);

	err |= __put_user(0, &frame->uc.uc_link);

	err |= __put_user((void *)current->sas_ss_sp,

	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(rdusp()),

			  &frame->uc.uc_stack.ss_flags);