diff options
Diffstat (limited to 'arch/um/kernel/ptrace.c')
| -rw-r--r-- | arch/um/kernel/ptrace.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index e0510496596c..a5e33f29bbeb 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -42,10 +42,12 @@ void ptrace_disable(struct task_struct *child) extern int peek_user(struct task_struct * child, long addr, long data); extern int poke_user(struct task_struct * child, long addr, long data); -long arch_ptrace(struct task_struct *child, long request, long addr, long data) +long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) { int i, ret; - unsigned long __user *p = (void __user *)(unsigned long)data; + unsigned long __user *p = (void __user *)data; + void __user *vp = p; switch (request) { /* read word at location addr. */ @@ -107,24 +109,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) #endif #ifdef PTRACE_GETFPREGS case PTRACE_GETFPREGS: /* Get the child FPU state. */ - ret = get_fpregs((struct user_i387_struct __user *) data, - child); + ret = get_fpregs(vp, child); break; #endif #ifdef PTRACE_SETFPREGS case PTRACE_SETFPREGS: /* Set the child FPU state. */ - ret = set_fpregs((struct user_i387_struct __user *) data, - child); + ret = set_fpregs(vp, child); break; #endif case PTRACE_GET_THREAD_AREA: - ret = ptrace_get_thread_area(child, addr, - (struct user_desc __user *) data); + ret = ptrace_get_thread_area(child, addr, vp); break; case PTRACE_SET_THREAD_AREA: - ret = ptrace_set_thread_area(child, addr, - (struct user_desc __user *) data); + ret = ptrace_set_thread_area(child, addr, datavp); break; case PTRACE_FAULTINFO: { @@ -134,7 +132,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) * On i386, ptrace_faultinfo is smaller! */ ret = copy_to_user(p, &child->thread.arch.faultinfo, - sizeof(struct ptrace_faultinfo)); + sizeof(struct ptrace_faultinfo)) ? + -EIO : 0; break; } @@ -158,7 +157,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) #ifdef PTRACE_ARCH_PRCTL case PTRACE_ARCH_PRCTL: /* XXX Calls ptrace on the host - needs some SMP thinking */ - ret = arch_prctl(child, data, (void *) addr); + ret = arch_prctl(child, data, (void __user *) addr); break; #endif default: |