[PATCH -mm 24/43] powerpc compat_sys_ptrace
From: Roland McGrath <hidden>
Date: 2007-12-20 12:02:53
Also in:
linux-arch, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), ptrace support, the rest · Maintainers:
Madhavan Srinivasan, Oleg Nesterov, Linus Torvalds
This replaces powerpc's compat_sys_ptrace with a compat_arch_ptrace and enables the new generic definition of compat_sys_ptrace instead. Signed-off-by: Roland McGrath <redacted> --- arch/powerpc/kernel/ptrace32.c | 33 +++++---------------------------- include/asm-powerpc/ptrace.h | 2 ++ 2 files changed, 7 insertions(+), 28 deletions(-)
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c
index 6612304..0f6eea0 100644
--- a/arch/powerpc/kernel/ptrace32.c
+++ b/arch/powerpc/kernel/ptrace32.c@@ -85,33 +85,13 @@ static long compat_ptrace_old(struct task_struct *child, long request, return ret; } -long compat_sys_ptrace(int request, int pid, unsigned long addr, - unsigned long data) +long compat_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t caddr, compat_ulong_t cdata) { - struct task_struct *child; + unsigned long addr = caddr; + unsigned long data = cdata; 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); - goto out_tsk; - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - goto out_tsk; - switch (request) { /* * Read 4 bytes of the other process' storage
@@ -375,9 +355,6 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr, ret = compat_ptrace_request(child, request, addr, data); break; } -out_tsk: - put_task_struct(child); -out: - unlock_kernel(); + return ret; }
diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h
index 3063363..a8cb00c 100644
--- a/include/asm-powerpc/ptrace.h
+++ b/include/asm-powerpc/ptrace.h@@ -55,6 +55,8 @@ struct pt_regs { #ifdef __powerpc64__ +#define __ARCH_WANT_COMPAT_SYS_PTRACE + #define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */ /* Size of dummy stack frame allocated when calling signal handler. */
--
1.5.3.6