From: Dmitry V. Levin <ldv@altlinux.org>
Date: Thu, 24 Dec 2015 16:53:07 +0000 (+0000)
Subject: Enhance personality syscall decoding
X-Git-Tag: v4.12~792
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=97cbf69756ef371853280574962f3fec05c7461e;p=strace

Enhance personality syscall decoding

* personality.c (SYS_FUNC(personality)): On entering syscall,
print first argument not as a hex value but as a set of flags.
On exiting syscall, print return code as a set of flags.
* NEWS: Mention this enhancement.
---

diff --git a/NEWS b/NEWS
index 09263eb2..f66d3212 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,9 @@
 Noteworthy changes in release ?.?? (????-??-??)
 ===============================================
 
+* Improvements
+  * Enhanced decoding of personality syscall.
+
 * Bug fixes
   * Fixed build on arc, metag, nios2, or1k, and tile architectures.
 
diff --git a/personality.c b/personality.c
index 5c425c61..2030374e 100644
--- a/personality.c
+++ b/personality.c
@@ -6,7 +6,11 @@
 
 SYS_FUNC(personality)
 {
-	printxval(personality_options, tcp->u_arg[0], "PER_???");
+	if (entering(tcp)) {
+		printflags(personality_options, tcp->u_arg[0], "PER_???");
+		return 0;
+	}
 
-	return RVAL_DECODED;
+	tcp->auxstr = sprintflags("", personality_options, tcp->u_rval);
+	return RVAL_HEX | RVAL_STR;
 }