From a1f8213b9518d0e9124a48a34bdd58b4bc2650e5 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 27 Jun 2009 15:05:30 +0200 Subject: score: add address space annotations Annotate the address space for pointers that are used correctly with __user and __iomem, so that sparse can better warn about incorrect casts. Signed-off-by: Arnd Bergmann --- arch/score/include/asm/uaccess.h | 4 ++-- arch/score/kernel/ptrace.c | 7 ++++--- arch/score/kernel/signal.c | 10 +++++----- arch/score/kernel/sys_score.c | 9 +++++---- 4 files changed, 16 insertions(+), 14 deletions(-) (limited to 'arch/score') diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h index 43ce28a1d0f..6f09e2b7ddb 100644 --- a/arch/score/include/asm/uaccess.h +++ b/arch/score/include/asm/uaccess.h @@ -13,9 +13,9 @@ extern int fixup_exception(struct pt_regs *regs); #ifndef __ASSEMBLY__ #define __range_ok(addr, size) \ - ((((unsigned long)(addr) >= 0x80000000) \ + ((((unsigned long __force)(addr) >= 0x80000000) \ || ((unsigned long)(size) > 0x80000000) \ - || (((unsigned long)(addr) + (unsigned long)(size)) > 0x80000000))) + || (((unsigned long __force)(addr) + (unsigned long)(size)) > 0x80000000))) #define __access_ok(addr, size) \ (__range_ok((addr), (size)) == 0) diff --git a/arch/score/kernel/ptrace.c b/arch/score/kernel/ptrace.c index 19911e3187b..1db876b1147 100644 --- a/arch/score/kernel/ptrace.c +++ b/arch/score/kernel/ptrace.c @@ -267,6 +267,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; + unsigned long __user *datap = (void __user *)data; switch (request) { /* Read the word at location addr in the USER area. */ @@ -316,7 +317,7 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data) return -EIO; } - ret = put_user(tmp, (unsigned long *) data); + ret = put_user(tmp, (unsigned int __user *) datap); return ret; } @@ -355,11 +356,11 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data) } case PTRACE_GETREGS: - ret = ptrace_getregs(child, (void __user *)data); + ret = ptrace_getregs(child, (void __user *)datap); break; case PTRACE_SETREGS: - ret = ptrace_setregs(child, (void __user *)data); + ret = ptrace_setregs(child, (void __user *)datap); break; default: diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c index 252f6d95ad9..1634aaa7c2b 100644 --- a/arch/score/kernel/signal.c +++ b/arch/score/kernel/signal.c @@ -131,13 +131,13 @@ void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, if ((ka->sa.sa_flags & SA_ONSTACK) && (!on_sig_stack(sp))) sp = current->sas_ss_sp + current->sas_ss_size; - return (void *)((sp - frame_size) & ~7); + return (void __user*)((sp - frame_size) & ~7); } int score_sigaltstack(struct pt_regs *regs) { - const stack_t *uss = (const stack_t *) regs->regs[4]; - stack_t *uoss = (stack_t *) regs->regs[5]; + const stack_t __user *uss = (const stack_t __user *) regs->regs[4]; + stack_t __user *uoss = (stack_t __user *) regs->regs[5]; unsigned long usp = regs->regs[0]; return do_sigaltstack(uss, uoss, usp); @@ -188,7 +188,7 @@ badframe: int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { - struct rt_sigframe *frame; + struct rt_sigframe __user *frame; int err = 0; frame = get_sigframe(ka, regs, sizeof(*frame)); @@ -209,7 +209,7 @@ int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, err |= copy_siginfo_to_user(&frame->rs_info, info); err |= __put_user(0, &frame->rs_uc.uc_flags); err |= __put_user(0, &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[0]), &frame->rs_uc.uc_stack.ss_flags); diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c index eb4d2d3b97a..16ace29935b 100644 --- a/arch/score/kernel/sys_score.c +++ b/arch/score/kernel/sys_score.c @@ -87,18 +87,19 @@ int score_clone(struct pt_regs *regs) * sys_execve() executes a new program. * This is called indirectly via a small wrapper */ -int score_execve(struct pt_regs *regs) +asmlinkage long +score_execve(struct pt_regs *regs) { int error; char *filename; - filename = getname((char *) (long) regs->regs[4]); + filename = getname((char __user*)regs->regs[4]); error = PTR_ERR(filename); if (IS_ERR(filename)) return error; - error = do_execve(filename, (char **) (long) regs->regs[5], - (char **) (long) regs->regs[6], regs); + error = do_execve(filename, (char __user *__user*)regs->regs[5], + (char __user *__user *) regs->regs[6], regs); putname(filename); return error; -- cgit v1.2.3