diff options
Diffstat (limited to 'arch/ia64/kernel/ptrace.c')
| -rw-r--r-- | arch/ia64/kernel/ptrace.c | 44 |
1 files changed, 14 insertions, 30 deletions
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index 331d6768b5d5..9d2591423eb7 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -908,7 +908,7 @@ static int access_uarea (struct task_struct *child, unsigned long addr, unsigned long *data, int write_access) { - unsigned long *ptr, regnum, urbs_end, rnat_addr, cfm; + unsigned long *ptr, regnum, urbs_end, cfm; struct switch_stack *sw; struct pt_regs *pt; # define pt_reg_addr(pt, reg) ((void *) \ @@ -1093,16 +1093,8 @@ access_uarea (struct task_struct *child, unsigned long addr, return 0; case PT_AR_RNAT: - urbs_end = ia64_get_user_rbs_end(child, pt, NULL); - rnat_addr = (long) ia64_rse_rnat_addr((long *) - urbs_end); - if (write_access) - return ia64_poke(child, sw, urbs_end, - rnat_addr, *data); - else - return ia64_peek(child, sw, urbs_end, - rnat_addr, data); - + ptr = pt_reg_addr(pt, ar_rnat); + break; case PT_R1: ptr = pt_reg_addr(pt, r1); break; @@ -1541,11 +1533,10 @@ asmlinkage long sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data) { struct pt_regs *pt; - unsigned long urbs_end, peek_or_poke; + unsigned long peek_or_poke; struct task_struct *child; struct switch_stack *sw; long ret; - struct unw_frame_info info; lock_kernel(); ret = -EPERM; @@ -1593,26 +1584,19 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data) case PTRACE_PEEKTEXT: case PTRACE_PEEKDATA: /* read word at location addr */ - urbs_end = ia64_get_user_rbs_end(child, pt, NULL); - ret = ia64_peek(child, sw, urbs_end, addr, &data); - if (ret == 0) { - ret = data; - /* ensure "ret" is not mistaken as an error code: */ - force_successful_syscall_return(); + if (access_process_vm(child, addr, &data, sizeof(data), 0) + != sizeof(data)) { + ret = -EIO; + goto out_tsk; } + ret = data; + /* ensure "ret" is not mistaken as an error code */ + force_successful_syscall_return(); goto out_tsk; - case PTRACE_POKETEXT: - case PTRACE_POKEDATA: - /* write the word at location addr */ - urbs_end = ia64_get_user_rbs_end(child, pt, NULL); - ret = ia64_poke(child, sw, urbs_end, addr, data); - - /* Make sure user RBS has the latest data */ - unw_init_from_blocked_task(&info, child); - do_sync_rbs(&info, ia64_sync_user_rbs); - - goto out_tsk; + /* PTRACE_POKETEXT and PTRACE_POKEDATA is handled + * by the generic ptrace_request(). + */ case PTRACE_PEEKUSR: /* read the word at addr in the USER area */ |