From 809ee3e46c8bbcc47d81e86e8237afc085f77ea9 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Thu, 12 May 2016 15:45:24 +0000
Subject: [PATCH] ptrace: decode addr argument of PTRACE_PEEKSIGINFO request

The addr argument of PTRACE_PEEKSIGINFO request is a pointer to
a struct ptrace_peeksiginfo_args.

* process.c: Include "xlat/ptrace_peeksiginfo_flags.h".
(SYS_FUNC(ptrace)): Print addr argument of PTRACE_PEEKSIGINFO request
as a struct ptrace_peeksiginfo_args.
* xlat/ptrace_peeksiginfo_flags.in: New file.
---
 process.c                        | 19 +++++++++++++++++++
 xlat/ptrace_peeksiginfo_flags.in |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 xlat/ptrace_peeksiginfo_flags.in

diff --git a/process.c b/process.c
index 3f10a891..520711b7 100644
--- a/process.c
+++ b/process.c
@@ -46,6 +46,7 @@
 #include "ptrace.h"
 #include "xlat/ptrace_cmds.h"
 #include "xlat/ptrace_setoptions_flags.h"
+#include "xlat/ptrace_peeksiginfo_flags.h"
 
 #define uoff(member)	offsetof(struct user, member)
 #define XLAT_UOFF(member)	{ uoff(member), "offsetof(struct user, " #member ")" }
@@ -122,6 +123,24 @@ SYS_FUNC(ptrace)
 		case PTRACE_SECCOMP_GET_FILTER:
 			tprintf(", %lu", addr);
 			break;
+		case PTRACE_PEEKSIGINFO: {
+			tprints(", ");
+			struct {
+				uint64_t off;
+				uint32_t flags;
+				uint32_t nr;
+			} psi;
+			if (umove_or_printaddr(tcp, addr, &psi)) {
+				tprints(", ");
+				printaddr(data);
+				return RVAL_DECODED;
+			}
+			tprintf("{off=%" PRIu64 ", flags=", psi.off);
+			printflags(ptrace_peeksiginfo_flags, psi.flags,
+				   "PTRACE_PEEKSIGINFO_???");
+			tprintf(", nr=%u}", psi.nr);
+			break;
+		}
 #if defined SPARC || defined SPARC64
 		case PTRACE_GETREGS:
 		case PTRACE_SETREGS:
diff --git a/xlat/ptrace_peeksiginfo_flags.in b/xlat/ptrace_peeksiginfo_flags.in
new file mode 100644
index 00000000..28a4c222
--- /dev/null
+++ b/xlat/ptrace_peeksiginfo_flags.in
@@ -0,0 +1 @@
+PTRACE_PEEKSIGINFO_SHARED 1