[PATCH 22/41] m68k: signal __user annotations

From: Al Viro
Date: Tue Jan 03 2006 - 18:39:13 EST

From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: 1133512763 -0500

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

---

arch/m68k/kernel/signal.c | 62 +++++++++++++++++++++++----------------------
include/asm-m68k/signal.h | 2 +
2 files changed, 32 insertions(+), 32 deletions(-)

68c20b8b49b14a1932eb8ad9b717d2d0d5c99c4c
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index 9c636a4..866917b 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -96,7 +96,7 @@ asmlinkage int do_sigsuspend(struct pt_r
asmlinkage int
do_rt_sigsuspend(struct pt_regs *regs)
{
- sigset_t *unewset = (sigset_t *)regs->d1;
+ sigset_t __user *unewset = (sigset_t __user *)regs->d1;
size_t sigsetsize = (size_t)regs->d2;
sigset_t saveset, newset;

@@ -122,8 +122,8 @@ do_rt_sigsuspend(struct pt_regs *regs)
}

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;
@@ -154,7 +154,7 @@ sys_sigaction(int sig, const struct old_
}

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());
}
@@ -169,10 +169,10 @@ sys_sigaltstack(const stack_t *uss, stac

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;
@@ -180,10 +180,10 @@ 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;
@@ -248,7 +248,7 @@ out:
#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 = CPU_IS_060 ? 8 : 0;
@@ -267,7 +267,7 @@ static inline int rt_restore_fpu_state(s
return 0;
}

- if (__get_user(*(long *)fpstate, (long *)&uc->uc_fpstate))
+ if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
goto out;
if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
if (!CPU_IS_060)
@@ -306,7 +306,7 @@ static inline int rt_restore_fpu_state(s
"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"
@@ -319,7 +319,7 @@ out:
}

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 fsize, formatvec;
@@ -404,10 +404,10 @@ badframe:

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 fsize, temp;
- greg_t *gregs = uc->uc_mcontext.gregs;
+ greg_t __user *gregs = uc->uc_mcontext.gregs;
unsigned long usp;
int err;

@@ -506,7 +506,7 @@ asmlinkage int do_sigreturn(unsigned lon
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;

@@ -536,7 +536,7 @@ asmlinkage int do_rt_sigreturn(unsigned
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;

@@ -596,7 +596,7 @@ static inline void save_fpu_state(struct
}
}

-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 = CPU_IS_060 ? 8 : 0;
@@ -617,7 +617,7 @@ static inline int rt_save_fpu_state(stru
".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 (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
fpregset_t fpregs;
if (!CPU_IS_060)
@@ -642,7 +642,7 @@ static inline int rt_save_fpu_state(stru
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;
}
@@ -662,10 +662,10 @@ static void setup_sigcontext(struct sigc
save_fpu_state(sc, regs);
}

-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);
@@ -753,7 +753,7 @@ static inline void push_cache (unsigned
}
}

-static inline void *
+static inline void __user *
get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
{
unsigned long usp;
@@ -766,13 +766,13 @@ get_sigframe(struct k_sigaction *ka, str
if (!on_sig_stack(usp))
usp = current->sas_ss_sp + current->sas_ss_size;
}
- return (void *)((usp - frame_size) & -8UL);
+ return (void __user *)((usp - frame_size) & -8UL);
}

static void setup_frame (int sig, struct k_sigaction *ka,
sigset_t *set, struct pt_regs *regs)
{
- struct sigframe *frame;
+ struct sigframe __user *frame;
int fsize = frame_extra_sizes[regs->format];
struct sigcontext context;
int err = 0;
@@ -813,7 +813,7 @@ static void setup_frame (int sig, struct
err |= __put_user(frame->retcode, &frame->pretcode);
/* moveq #,d0; trap #0 */
err |= __put_user(0x70004e40 + (__NR_sigreturn << 16),
- (long *)(frame->retcode));
+ (long __user *)(frame->retcode));

if (err)
goto give_sigsegv;
@@ -849,7 +849,7 @@ give_sigsegv:
static void 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 fsize = frame_extra_sizes[regs->format];
int err = 0;

@@ -880,8 +880,8 @@ static void setup_rt_frame (int sig, str

/* 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);
@@ -893,8 +893,8 @@ static void setup_rt_frame (int sig, str
err |= __put_user(frame->retcode, &frame->pretcode);
/* moveq #,d0; notb d0; trap #0 */
err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16),
- (long *)(frame->retcode + 0));
- err |= __put_user(0x4e40, (short *)(frame->retcode + 4));
+ (long __user *)(frame->retcode + 0));
+ err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4));

if (err)
goto give_sigsegv;
diff --git a/include/asm-m68k/signal.h b/include/asm-m68k/signal.h
index a0cdf90..b7b7ea2 100644
--- a/include/asm-m68k/signal.h
+++ b/include/asm-m68k/signal.h
@@ -144,7 +144,7 @@ struct sigaction {
#endif /* __KERNEL__ */

typedef struct sigaltstack {
- void *ss_sp;
+ void __user *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
--
0.99.9.GIT

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