sparc: Fix ptrace() detach.

Forever we had a PTRACE_SUNOS_DETACH which was unconditionally
recognized, regardless of the personality of the process.

Unfortunately, this value is what ended up in the GLIBC sys/ptrace.h
header file on sparc as PTRACE_DETACH and PT_DETACH.

So continue to recognize this old value.  Luckily, it doesn't conflict
with anything we actually care about.

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

4 files changed, 8 insertions, 0 deletions

diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 7f44ae69b29e..60dfc65549db 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -441,6 +441,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         default:
+                if (request == PTRACE_SPARC_DETACH)
+                        request = PTRACE_DETACH;
                 ret = ptrace_request(child, request, addr, data);
                 break;
         }
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index e9fc0aa2da38..b803fe9b2c8d 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -944,6 +944,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
                 break;
 
         default:
+                if (request == PTRACE_SPARC_DETACH)
+                        request = PTRACE_DETACH;
                 ret = compat_ptrace_request(child, request, addr, data);
                 break;
         }
@@ -1036,6 +1038,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                 break;
 
         default:
+                if (request == PTRACE_SPARC_DETACH)
+                        request = PTRACE_DETACH;
                 ret = ptrace_request(child, request, addr, data);
                 break;
         }
diff --git a/include/asm-sparc/ptrace.h b/include/asm-sparc/ptrace.h
index 8201a7b29d49..c25334234a6f 100644
--- a/include/asm-sparc/ptrace.h
+++ b/include/asm-sparc/ptrace.h
@@ -149,6 +149,7 @@ extern void show_regs(struct pt_regs *);
 #define SF_XXARG  0x5c
 
 /* Stuff for the ptrace system call */
+#define PTRACE_SPARC_DETACH       11
 #define PTRACE_GETREGS            12
 #define PTRACE_SETREGS            13
 #define PTRACE_GETFPREGS          14
diff --git a/include/asm-sparc64/ptrace.h b/include/asm-sparc64/ptrace.h
index 714b81956f32..823656559d1a 100644
--- a/include/asm-sparc64/ptrace.h
+++ b/include/asm-sparc64/ptrace.h
@@ -298,6 +298,7 @@ extern void __show_regs(struct pt_regs *);
 #define SF_XXARG  0x5c
 
 /* Stuff for the ptrace system call */
+#define PTRACE_SPARC_DETACH       11
 #define PTRACE_GETREGS            12
 #define PTRACE_SETREGS            13
 #define PTRACE_GETFPREGS          14