From: Dmitry V. Levin <ldv@altlinux.org>
Date: Thu, 12 May 2016 15:18:05 +0000 (+0000)
Subject: ptrace: do not print data argument of some requests on sparc
X-Git-Tag: v4.12~180
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=5c720b0b9b90a6cf650c52b0d9d8204b70f0f820;p=strace

ptrace: do not print data argument of some requests on sparc

On sparc, kernel ignores data argument of PTRACE_GETREGS,
PTRACE_SETREGS, PTRACE_GETFPREGS, and PTRACE_SETFPREGS requests.

* process.c (SYS_FUNC(ptrace)) [SPARC || SPARC64]: Return RVAL_DECODED
right after printing addr argument if request is one of PTRACE_GETREGS,
PTRACE_SETREGS, PTRACE_GETFPREGS, or PTRACE_SETFPREGS.
---

diff --git a/process.c b/process.c
index 620cc1f4..e735bc36 100644
--- a/process.c
+++ b/process.c
@@ -117,6 +117,16 @@ SYS_FUNC(ptrace)
 			tprints(", ");
 			printxval(nt_descriptor_types, addr, "NT_???");
 			break;
+#if defined SPARC || defined SPARC64
+		case PTRACE_GETREGS:
+		case PTRACE_SETREGS:
+		case PTRACE_GETFPREGS:
+		case PTRACE_SETFPREGS:
+			tprints(", ");
+			printaddr(addr);
+			/* data is ignored */
+			return RVAL_DECODED;
+#endif
 		default:
 			tprints(", ");
 			printaddr(addr);