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authorChristoph Hellwig <hch@lst.de>2007-10-16 01:26:37 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:04 -0700
commit0ac15559150a20d39d381a6be44cdea373584222 (patch)
tree10be83ffe3197f029beffd242b7ddf21dcc25a35 /arch/m32r
parentdab8f4963ae0a79b945b8ed297e30d390a9d9f50 (diff)
m32r: convert to generic sys_ptrace
Convert m32r to the generic sys_ptrace. The conversion requires an architecture hook after ptrace_attach which this patch adds. The hook will also be needed for a conersion of ia64 to the generic ptrace code. Thanks to Hirokazu Takata for fixing a bug in the first version of this code. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m32r')
-rw-r--r--arch/m32r/kernel/ptrace.c42
1 files changed, 3 insertions, 39 deletions
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c
index abbeaf8f6d0..ed4d0756c5d 100644
--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -570,7 +570,7 @@ withdraw_debug_trap(struct pt_regs *regs)
}
}
-static void
+void
init_debug_traps(struct task_struct *child)
{
struct debug_trap *p = &child->thread.debug_trap;
@@ -593,8 +593,8 @@ void ptrace_disable(struct task_struct *child)
/* nothing to do.. */
}
-static int
-do_ptrace(long request, struct task_struct *child, long addr, long data)
+long
+arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
int ret;
@@ -720,42 +720,6 @@ do_ptrace(long request, struct task_struct *child, long addr, long data)
return ret;
}
-asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
-{
- struct task_struct *child;
- int ret;
-
- lock_kernel();
- if (request == PTRACE_TRACEME) {
- ret = ptrace_traceme();
- goto out;
- }
-
- child = ptrace_get_task_struct(pid);
- if (IS_ERR(child)) {
- ret = PTR_ERR(child);
- goto out;
- }
-
- if (request == PTRACE_ATTACH) {
- ret = ptrace_attach(child);
- if (ret == 0)
- init_debug_traps(child);
- goto out_tsk;
- }
-
- ret = ptrace_check_attach(child, request == PTRACE_KILL);
- if (ret == 0)
- ret = do_ptrace(request, child, addr, data);
-
-out_tsk:
- put_task_struct(child);
-out:
- unlock_kernel();
-
- return ret;
-}
-
/* notification of system call entry/exit
* - triggered by current->work.syscall_trace
*/