diff options
Diffstat (limited to 'arch/um/kernel/ptrace.c')
-rw-r--r-- | arch/um/kernel/ptrace.c | 44 |
1 files changed, 11 insertions, 33 deletions
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 4845099..a5e33f2 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -7,9 +7,6 @@ #include "linux/ptrace.h" #include "linux/sched.h" #include "asm/uaccess.h" -#ifdef CONFIG_PROC_MM -#include "proc_mm.h" -#endif #include "skas_ptrace.h" @@ -45,10 +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. */ @@ -110,24 +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: { @@ -137,7 +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; } @@ -158,28 +154,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) break; } #endif -#ifdef CONFIG_PROC_MM - case PTRACE_SWITCH_MM: { - struct mm_struct *old = child->mm; - struct mm_struct *new = proc_mm_get_mm(data); - - if (IS_ERR(new)) { - ret = PTR_ERR(new); - break; - } - - atomic_inc(&new->mm_users); - child->mm = new; - child->active_mm = new; - mmput(old); - ret = 0; - break; - } -#endif #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: |