[SPARC64]: Make use of compat_sys_ptrace()

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 51f0124..9a1ba1f 100644 (file)
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -684,72 +684,39 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
        return &user_sparc64_view;
 }
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+struct compat_fps {
+       unsigned int regs[32];
+       unsigned int fsr;
+       unsigned int flags;
+       unsigned int extra;
+       unsigned int fpqd;
+       struct compat_fq {
+               unsigned int insnaddr;
+               unsigned int insn;
+       } fpq[16];
+};
+
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+                       compat_ulong_t caddr, compat_ulong_t cdata)
 {
-       long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
-       const struct user_regset_view *view;
+       const struct user_regset_view *view = task_user_regset_view(child);
+       compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4];
+       struct pt_regs32 __user *pregs;
+       struct compat_fps __user *fps;
+       unsigned long addr2 = caddr2;
+       unsigned long addr = caddr;
+       unsigned long data = cdata;
        int ret;
 
-       if (test_thread_flag(TIF_32BIT))
-               addr2 &= 0xffffffffUL;
+       pregs = (struct pt_regs32 __user *) addr;
+       fps = (struct compat_fps __user *) addr;
 
-       view = task_user_regset_view(child);
-
-       switch(request) {
+       switch (request) {
        case PTRACE_PEEKUSR:
                ret = (addr != 0) ? -EIO : 0;
                break;
 
-       case PTRACE_PEEKTEXT: /* read word at location addr. */ 
-       case PTRACE_PEEKDATA: {
-               unsigned long tmp64;
-               unsigned int tmp32;
-               int copied;
-
-               ret = -EIO;
-               if (test_thread_flag(TIF_32BIT)) {
-                       copied = access_process_vm(child, addr,
-                                                  &tmp32, sizeof(tmp32), 0);
-                       if (copied == sizeof(tmp32))
-                               ret = put_user(tmp32,
-                                              (unsigned int __user *) data);
-               } else {
-                       copied = access_process_vm(child, addr,
-                                                  &tmp64, sizeof(tmp64), 0);
-                       if (copied == sizeof(tmp64))
-                               ret = put_user(tmp64,
-                                              (unsigned long __user *) data);
-               }
-               break;
-       }
-
-       case PTRACE_POKETEXT: /* write the word at location addr. */
-       case PTRACE_POKEDATA: {
-               unsigned long tmp64;
-               unsigned int tmp32;
-               int copied;
-
-               ret = -EIO;
-               if (test_thread_flag(TIF_32BIT)) {
-                       tmp32 = data;
-                       copied = access_process_vm(child, addr,
-                                                  &tmp32, sizeof(tmp32), 1);
-                       if (copied == sizeof(tmp32))
-                               ret = 0;
-               } else {
-                       tmp64 = data;
-                       copied = access_process_vm(child, addr,
-                                                  &tmp64, sizeof(tmp64), 1);
-                       if (copied == sizeof(tmp64))
-                               ret = 0;
-               }
-               break;
-       }
-
-       case PTRACE_GETREGS: {
-               struct pt_regs32 __user *pregs =
-                       (struct pt_regs32 __user *) addr;
-
+       case PTRACE_GETREGS:
                ret = copy_regset_to_user(child, view, REGSET_GENERAL,
                                          32 * sizeof(u32),
                                          4 * sizeof(u32),
@@ -760,29 +727,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                                  15 * sizeof(u32),
                                                  &pregs->u_regs[0]);
                break;
-       }
-
-       case PTRACE_GETREGS64: {
-               struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
-               ret = copy_regset_to_user(child, view, REGSET_GENERAL,
-                                         1 * sizeof(u64),
-                                         15 * sizeof(u64),
-                                         &pregs->u_regs[0]);
-               if (!ret) {
-                       /* XXX doesn't handle 'y' register correctly XXX */
-                       ret = copy_regset_to_user(child, view, REGSET_GENERAL,
-                                                 32 * sizeof(u64),
-                                                 4 * sizeof(u64),
-                                                 &pregs->tstate);
-               }
-               break;
-       }
-
-       case PTRACE_SETREGS: {
-               struct pt_regs32 __user *pregs =
-                       (struct pt_regs32 __user *) addr;
 
+       case PTRACE_SETREGS:
                ret = copy_regset_from_user(child, view, REGSET_GENERAL,
                                            32 * sizeof(u32),
                                            4 * sizeof(u32),
@@ -793,39 +739,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                                    15 * sizeof(u32),
                                                    &pregs->u_regs[0]);
                break;
-       }
-
-       case PTRACE_SETREGS64: {
-               struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
-               ret = copy_regset_from_user(child, view, REGSET_GENERAL,
-                                           1 * sizeof(u64),
-                                           15 * sizeof(u64),
-                                           &pregs->u_regs[0]);
-               if (!ret) {
-                       /* XXX doesn't handle 'y' register correctly XXX */
-                       ret = copy_regset_from_user(child, view, REGSET_GENERAL,
-                                                   32 * sizeof(u64),
-                                                   4 * sizeof(u64),
-                                                   &pregs->tstate);
-               }
-               break;
-       }
-
-       case PTRACE_GETFPREGS: {
-               struct fps {
-                       unsigned int regs[32];
-                       unsigned int fsr;
-                       unsigned int flags;
-                       unsigned int extra;
-                       unsigned int fpqd;
-                       struct fq {
-                               unsigned int insnaddr;
-                               unsigned int insn;
-                       } fpq[16];
-               };
-               struct fps __user *fps = (struct fps __user *) addr;
 
+       case PTRACE_GETFPREGS:
                ret = copy_regset_to_user(child, view, REGSET_FP,
                                          0 * sizeof(u32),
                                          32 * sizeof(u32),
@@ -843,36 +758,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                ret = -EFAULT;
                }
                break;
-       }
-
-       case PTRACE_GETFPREGS64: {
-               struct fps {
-                       unsigned int regs[64];
-                       unsigned long fsr;
-               };
-               struct fps __user *fps = (struct fps __user *) addr;
-
-               ret = copy_regset_to_user(child, view, REGSET_FP,
-                                         0 * sizeof(u64),
-                                         33 * sizeof(u64),
-                                         fps);
-               break;
-       }
-
-       case PTRACE_SETFPREGS: {
-               struct fps {
-                       unsigned int regs[32];
-                       unsigned int fsr;
-                       unsigned int flags;
-                       unsigned int extra;
-                       unsigned int fpqd;
-                       struct fq {
-                               unsigned int insnaddr;
-                               unsigned int insn;
-                       } fpq[16];
-               };
-               struct fps __user *fps = (struct fps __user *) addr;
 
+       case PTRACE_SETFPREGS:
                ret = copy_regset_from_user(child, view, REGSET_FP,
                                            0 * sizeof(u32),
                                            32 * sizeof(u32),
@@ -883,21 +770,94 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                                                    1 * sizeof(u32),
                                                    &fps->fsr);
                break;
+
+       case PTRACE_READTEXT:
+       case PTRACE_READDATA:
+               ret = ptrace_readdata(child, addr,
+                                     (char __user *)addr2, data);
+               if (ret == data)
+                       ret = 0;
+               else if (ret >= 0)
+                       ret = -EIO;
+               break;
+
+       case PTRACE_WRITETEXT:
+       case PTRACE_WRITEDATA:
+               ret = ptrace_writedata(child, (char __user *) addr2,
+                                      addr, data);
+               if (ret == data)
+                       ret = 0;
+               else if (ret >= 0)
+                       ret = -EIO;
+               break;
+
+       default:
+               ret = compat_ptrace_request(child, request, addr, data);
+               break;
        }
 
-       case PTRACE_SETFPREGS64: {
-               struct fps {
-                       unsigned int regs[64];
-                       unsigned long fsr;
-               };
-               struct fps __user *fps = (struct fps __user *) addr;
+       return ret;
+}
+
+struct fps {
+       unsigned int regs[64];
+       unsigned long fsr;
+};
+
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+       const struct user_regset_view *view = task_user_regset_view(child);
+       struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
+       unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
+       struct fps __user *fps = (struct fps __user *) addr;
+       int ret;
+
+       switch (request) {
+       case PTRACE_PEEKUSR:
+               ret = (addr != 0) ? -EIO : 0;
+               break;
 
+       case PTRACE_GETREGS64:
+               ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+                                         1 * sizeof(u64),
+                                         15 * sizeof(u64),
+                                         &pregs->u_regs[0]);
+               if (!ret) {
+                       /* XXX doesn't handle 'y' register correctly XXX */
+                       ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+                                                 32 * sizeof(u64),
+                                                 4 * sizeof(u64),
+                                                 &pregs->tstate);
+               }
+               break;
+
+       case PTRACE_SETREGS64:
+               ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+                                           1 * sizeof(u64),
+                                           15 * sizeof(u64),
+                                           &pregs->u_regs[0]);
+               if (!ret) {
+                       /* XXX doesn't handle 'y' register correctly XXX */
+                       ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+                                                   32 * sizeof(u64),
+                                                   4 * sizeof(u64),
+                                                   &pregs->tstate);
+               }
+               break;
+
+       case PTRACE_GETFPREGS64:
+               ret = copy_regset_to_user(child, view, REGSET_FP,
+                                         0 * sizeof(u64),
+                                         33 * sizeof(u64),
+                                         fps);
+               break;
+
+       case PTRACE_SETFPREGS64:
                ret = copy_regset_to_user(child, view, REGSET_FP,
                                          0 * sizeof(u64),
                                          33 * sizeof(u64),
                                          fps);
                break;
-       }
 
        case PTRACE_READTEXT:
        case PTRACE_READDATA:
@@ -919,16 +879,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                        ret = -EIO;
                break;
 
-       case PTRACE_GETEVENTMSG: {
-               if (test_thread_flag(TIF_32BIT))
-                       ret = put_user(child->ptrace_message,
-                                      (unsigned int __user *) data);
-               else
-                       ret = put_user(child->ptrace_message,
-                                      (unsigned long __user *) data);
-               break;
-       }
-
        default:
                ret = ptrace_request(child, request, addr, data);
                break;

diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
index adc62f4..6b9b718 100644 (file)
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -23,7 +23,7 @@ sys_call_table32:
 /*10*/  .word sys_unlink, sunos_execv, sys_chdir, sys32_chown16, sys32_mknod
 /*15*/ .word sys_chmod, sys32_lchown16, sparc_brk, sys32_perfctr, sys32_lseek
 /*20*/ .word sys_getpid, sys_capget, sys_capset, sys32_setuid16, sys32_getuid16
-/*25*/ .word sys32_vmsplice, sys_ptrace, sys_alarm, sys32_sigaltstack, sys32_pause
+/*25*/ .word sys32_vmsplice, compat_sys_ptrace, sys_alarm, sys32_sigaltstack, sys32_pause
 /*30*/ .word compat_sys_utime, sys_lchown, sys_fchown, sys32_access, sys32_nice
        .word sys_chown, sys_sync, sys32_kill, compat_sys_newstat, sys32_sendfile
 /*40*/ .word compat_sys_newlstat, sys_dup, sys_pipe, compat_sys_times, sys_getuid

diff --git a/include/asm-sparc64/ptrace.h b/include/asm-sparc64/ptrace.h
index 734a767..8617c3a 100644 (file)
--- a/include/asm-sparc64/ptrace.h
+++ b/include/asm-sparc64/ptrace.h
@@ -95,6 +95,8 @@ struct sparc_trapf {
 
 #ifdef __KERNEL__
 
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+
 #define force_successful_syscall_return()          \
 do {   current_thread_info()->syscall_noerror = 1; \
 } while (0)