ptrace: use ptrace_request() in the remaining architectures

Use ptrace_request() in the three remaining architectures that didn't use it
(m68knommu, h8300, microblaze).  This means:

 - ptrace_request now handles PTRACE_{PEEK,POKE}{TEXT,DATA} and PTRACE_DETATCH
   calls that were previously called directly, or in case of h8300 even open
   coded.
 - adds new support for PTRACE_SETOPTIONS/PTRACE_GETEVENTMSG/
   PTRACE_GETSIGINFO/PTRACE_SETSIGINFO

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Michal Simek <monstr@monstr.eu>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 3 insertions, 72 deletions

diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c
index d32bbf02fc4..04bb9dd194e 100644
--- a/arch/h8300/kernel/ptrace.c
+++ b/arch/h8300/kernel/ptrace.c
@@ -42,14 +42,6 @@ extern void h8300_enable_trace(struct task_struct *child);
  * in exit.c or in signal.c.
  */
 
-inline
-static int read_long(struct task_struct * tsk, unsigned long addr,
-        unsigned long * result)
-{
-        *result = *(unsigned long *)addr;
-        return 0;
-}
-
 void ptrace_disable(struct task_struct *child)
 {
         h8300_disable_trace(child);
@@ -60,17 +52,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         int ret;
 
         switch (request) {
-                case PTRACE_PEEKTEXT: /* read word at location addr. */ 
-                case PTRACE_PEEKDATA: {
-                        unsigned long tmp;
-
-                        ret = read_long(child, addr, &tmp);
-                        if (ret < 0)
-                                break ;
-                        ret = put_user(tmp, (unsigned long *) data);
-                        break ;
-                }
-
         /* read the word at location addr in the USER area. */
                 case PTRACE_PEEKUSR: {
                         unsigned long tmp = 0;
@@ -109,11 +90,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
 
       /* when I and D space are separate, this will have to be fixed. */
-                case PTRACE_POKETEXT: /* write the word at location addr. */
-                case PTRACE_POKEDATA:
-                        ret = generic_ptrace_pokedata(child, addr, data);
-                        break;
-
                 case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
                         if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) {
                                 ret = -EIO;
@@ -175,10 +151,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
                 }
 
-                case PTRACE_DETACH:     /* detach a process that was attached. */
-                        ret = ptrace_detach(child, data);
-                        break;
-
                 case PTRACE_GETREGS: { /* Get all gp regs from the child. */
                         int i;
                         unsigned long tmp;
@@ -210,7 +182,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 }
 
                 default:
-                        ret = -EIO;
+                        ret = ptrace_request(child, request, addr, data);
                         break;
         }
         return ret;
diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index 85ed2f988f9..b100394813a 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -116,12 +116,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         int ret;
 
         switch (request) {
-                /* when I and D space are separate, these will need to be fixed. */
-                case PTRACE_PEEKTEXT: /* read word at location addr. */ 
-                case PTRACE_PEEKDATA:
-                        ret = generic_ptrace_peekdata(child, addr, data);
-                        break;
-
                 /* read the word at location addr in the USER area. */
                 case PTRACE_PEEKUSR: {
                         unsigned long tmp;
@@ -160,12 +154,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
                 }
 
-                /* when I and D space are separate, this will have to be fixed. */
-                case PTRACE_POKETEXT: /* write the word at location addr. */
-                case PTRACE_POKEDATA:
-                        ret = generic_ptrace_pokedata(child, addr, data);
-                        break;
-
                 case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
                         ret = -EIO;
                         if ((addr & 3) || addr < 0 ||
@@ -258,10 +246,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         break;
                 }
 
-                case PTRACE_DETACH:     /* detach a process that was attached. */
-                        ret = ptrace_detach(child, data);
-                        break;
-
                 case PTRACE_GETREGS: { /* Get all gp regs from the child. */
                         int i;
                         unsigned long tmp;
@@ -325,7 +309,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
                 default:
-                        ret = -EIO;
+                        ret = ptrace_request(child, request, addr, data);
                         break;
         }
         return ret;
diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c
index 4b3ac32754d..8c21d8b3cb0 100644
--- a/arch/microblaze/kernel/ptrace.c
+++ b/arch/microblaze/kernel/ptrace.c
@@ -78,26 +78,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         unsigned long copied;
 
         switch (request) {
-        case PTRACE_PEEKTEXT: /* read word at location addr. */
-        case PTRACE_PEEKDATA:
-                pr_debug("PEEKTEXT/PEEKDATA at %08lX\n", addr);
-                copied = access_process_vm(child, addr, &val, sizeof(val), 0);
-                rval = -EIO;
-                if (copied != sizeof(val))
-                        break;
-                rval = put_user(val, (unsigned long *)data);
-                break;
-
-        case PTRACE_POKETEXT: /* write the word at location addr. */
-        case PTRACE_POKEDATA:
-                pr_debug("POKETEXT/POKEDATA to %08lX\n", addr);
-                rval = 0;
-                if (access_process_vm(child, addr, &data, sizeof(data), 1)
-                    == sizeof(data))
-                        break;
-                rval = -EIO;
-                break;
-
         /* Read/write the word at location ADDR in the registers. */
         case PTRACE_PEEKUSR:
         case PTRACE_POKEUSR:
@@ -167,13 +147,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 wake_up_process(child);
                 break;
 
-        case PTRACE_DETACH: /* detach a process that was attached. */
-                pr_debug("PTRACE_DETACH\n");
-                rval = ptrace_detach(child, data);
-                break;
         default:
-                /* rval = ptrace_request(child, request, addr, data); noMMU */
-                rval = -EIO;
+                rval = ptrace_request(child, request, addr, data);
         }
         return rval;
 }