From b3c1e01a09d6af2dd7811a066ffcfc5171be2bed Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 10 Mar 2010 15:22:44 -0800
Subject: [PATCH] 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>
---
arch/h8300/kernel/ptrace.c | 30 +-----------------------------
arch/m68knommu/kernel/ptrace.c | 18 +-----------------
arch/microblaze/kernel/ptrace.c | 27 +--------------------------
3 files changed, 3 insertions(+), 72 deletions(-)
diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c
index d32bbf02fc48..04bb9dd194ec 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 85ed2f988f98..b100394813a7 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 4b3ac32754de..8c21d8b3cb0c 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;
}
--
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