Move function prototypes to asm/signal.h to detect trivial errors and
add some __user tags to get rid of sparse warnings. Output code
should not be changed.
Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 092679c..a8f435d 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -60,17 +60,9 @@ ATTRIB_NORET void cpu_idle(void)
}
}
-extern void do_signal(struct pt_regs *regs);
-extern void do_signal32(struct pt_regs *regs);
-
/*
* Native o32 and N64 ABI without DSP ASE
*/
-extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
- int signr, sigset_t *set);
-extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
- int signr, sigset_t *set, siginfo_t *info);
-
struct mips_abi mips_abi = {
.do_signal = do_signal,
#ifdef CONFIG_TRAD_SIGNALS
@@ -83,11 +75,6 @@ struct mips_abi mips_abi = {
/*
* o32 compatibility on 64-bit kernels, without DSP ASE
*/
-extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
- int signr, sigset_t *set);
-extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
- int signr, sigset_t *set, siginfo_t *info);
-
struct mips_abi mips_abi_32 = {
.do_signal = do_signal32,
.setup_frame = setup_frame_32,
@@ -99,9 +86,6 @@ struct mips_abi mips_abi_32 = {
/*
* N32 on 64-bit kernels, without DSP ASE
*/
-extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs,
- int signr, sigset_t *set, siginfo_t *info);
-
struct mips_abi mips_abi_n32 = {
.do_signal = do_signal,
.setup_rt_frame = setup_rt_frame_n32
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index c974cc9..402efd2 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -100,8 +100,8 @@ _sys_rt_sigsuspend(nabi_no_regargs struc
}
#ifdef CONFIG_TRAD_SIGNALS
-asmlinkage int sys_sigaction(int sig, const struct sigaction *act,
- struct sigaction *oact)
+asmlinkage int sys_sigaction(int sig, const struct sigaction __user *act,
+ struct sigaction __user *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
@@ -331,7 +331,7 @@ int setup_rt_frame(struct k_sigaction *
/* Create the ucontext. */
err |= __put_user(0, &frame->rs_uc.uc_flags);
err |= __put_user(NULL, &frame->rs_uc.uc_link);
- err |= __put_user((void *)current->sas_ss_sp,
+ err |= __put_user((void __user *)current->sas_ss_sp,
&frame->rs_uc.uc_stack.ss_sp);
err |= __put_user(sas_ss_flags(regs->regs[29]),
&frame->rs_uc.uc_stack.ss_flags);
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 237cd8a..225b05e 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -163,7 +163,7 @@ static inline int put_sigset(const sigse
return err;
}
-static inline int get_sigset(sigset_t *kbuf, const compat_sigset_t *ubuf)
+static inline int get_sigset(sigset_t *kbuf, const compat_sigset_t __user *ubuf)
{
int err = 0;
unsigned long sig[4];
@@ -195,10 +195,10 @@ save_static_function(sys32_sigsuspend);
__attribute_used__ noinline static int
_sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
- compat_sigset_t *uset;
+ compat_sigset_t __user *uset;
sigset_t newset;
- uset = (compat_sigset_t *) regs.regs[4];
+ uset = (compat_sigset_t __user *) regs.regs[4];
if (get_sigset(&newset, uset))
return -EFAULT;
sigdelsetmask(&newset, ~_BLOCKABLE);
@@ -219,7 +219,7 @@ save_static_function(sys32_rt_sigsuspend
__attribute_used__ noinline static int
_sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
- compat_sigset_t *uset;
+ compat_sigset_t __user *uset;
sigset_t newset;
size_t sigsetsize;
@@ -228,7 +228,7 @@ _sys32_rt_sigsuspend(nabi_no_regargs str
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
- uset = (compat_sigset_t *) regs.regs[4];
+ uset = (compat_sigset_t __user *) regs.regs[4];
if (get_sigset(&newset, uset))
return -EFAULT;
sigdelsetmask(&newset, ~_BLOCKABLE);
@@ -245,8 +245,8 @@ _sys32_rt_sigsuspend(nabi_no_regargs str
return -ERESTARTNOHAND;
}
-asmlinkage int sys32_sigaction(int sig, const struct sigaction32 *act,
- struct sigaction32 *oact)
+asmlinkage int sys32_sigaction(int sig, const struct sigaction32 __user *act,
+ struct sigaction32 __user *oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
@@ -301,7 +301,7 @@ asmlinkage int sys32_sigaltstack(nabi_no
if (!access_ok(VERIFY_READ, uss, sizeof(*uss)))
return -EFAULT;
err |= __get_user(sp, &uss->ss_sp);
- kss.ss_sp = (void *) (long) sp;
+ kss.ss_sp = (void __user *) (long) sp;
err |= __get_user(kss.ss_size, &uss->ss_size);
err |= __get_user(kss.ss_flags, &uss->ss_flags);
if (err)
@@ -316,7 +316,7 @@ asmlinkage int sys32_sigaltstack(nabi_no
if (!ret && uoss) {
if (!access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)))
return -EFAULT;
- sp = (int) (long) koss.ss_sp;
+ sp = (int) (unsigned long) koss.ss_sp;
err |= __put_user(sp, &uoss->ss_sp);
err |= __put_user(koss.ss_size, &uoss->ss_size);
err |= __put_user(koss.ss_flags, &uoss->ss_flags);
@@ -527,7 +527,7 @@ _sys32_rt_sigreturn(nabi_no_regargs stru
/* The ucontext contains a stack32_t, so we must convert! */
if (__get_user(sp, &frame->rs_uc.uc_stack.ss_sp))
goto badframe;
- st.ss_sp = (void *)(long) sp;
+ st.ss_sp = (void __user *)(long) sp;
if (__get_user(st.ss_size, &frame->rs_uc.uc_stack.ss_size))
goto badframe;
if (__get_user(st.ss_flags, &frame->rs_uc.uc_stack.ss_flags))
@@ -868,7 +868,7 @@ no_signal:
}
}
-asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 *act,
+asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
struct sigaction32 __user *oact,
unsigned int sigsetsize)
{
@@ -912,7 +912,7 @@ out:
return ret;
}
-asmlinkage int sys32_rt_sigprocmask(int how, compat_sigset_t *set,
+asmlinkage int sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
compat_sigset_t __user *oset, unsigned int sigsetsize)
{
sigset_t old_set, new_set;
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index 3e168c0..220e6de 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -141,7 +141,7 @@ _sysn32_rt_sigreturn(nabi_no_regargs str
/* The ucontext contains a stack32_t, so we must convert! */
if (__get_user(sp, &frame->rs_uc.uc_stack.ss_sp))
goto badframe;
- st.ss_sp = (void *)(long) sp;
+ st.ss_sp = (void __user *)(long) sp;
if (__get_user(st.ss_size, &frame->rs_uc.uc_stack.ss_size))
goto badframe;
if (__get_user(st.ss_flags, &frame->rs_uc.uc_stack.ss_flags))
diff --git a/include/asm-mips/signal.h b/include/asm-mips/signal.h
index 6fe903e..d8349e4 100644
--- a/include/asm-mips/signal.h
+++ b/include/asm-mips/signal.h
@@ -147,16 +147,34 @@ struct k_sigaction {
/* IRIX compatible stack_t */
typedef struct sigaltstack {
- void *ss_sp;
+ void __user *ss_sp;
size_t ss_size;
int ss_flags;
} stack_t;
#ifdef __KERNEL__
#include <asm/sigcontext.h>
+#include <asm/siginfo.h>
#define ptrace_signal_deliver(regs, cookie) do { } while (0)
+struct pt_regs;
+extern void do_signal(struct pt_regs *regs);
+extern void do_signal32(struct pt_regs *regs);
+
+extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
+ int signr, sigset_t *set);
+extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
+ int signr, sigset_t *set, siginfo_t *info);
+
+extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
+ int signr, sigset_t *set);
+extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
+ int signr, sigset_t *set, siginfo_t *info);
+
+extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs,
+ int signr, sigset_t *set, siginfo_t *info);
+
#endif /* __KERNEL__ */
#endif /* _ASM_SIGNAL_H */
