From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Tue, 6 Feb 2018 23:58:30 +0000 (+0100)
Subject: syscall.c: print higher bits of syscall return value on x32 personality
X-Git-Tag: v4.21~51
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b0a26b94039f2aef74e1ac063d84f7e205375777;p=strace

syscall.c: print higher bits of syscall return value on x32 personality

* syscall.c (syscall_exiting_trace): Check for current_klongsize instead
of current_wordsize to determine the size of tcp->u_rval.
---

diff --git a/syscall.c b/syscall.c
index ce804bf5..1450e3d6 100644
--- a/syscall.c
+++ b/syscall.c
@@ -916,7 +916,7 @@ syscall_exiting_trace(struct tcb *tcp, struct timeval tv, int res)
 			switch (sys_res & RVAL_MASK) {
 			case RVAL_HEX:
 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
-				if (current_wordsize < sizeof(tcp->u_rval)) {
+				if (current_klongsize < sizeof(tcp->u_rval)) {
 					tprintf("= %#x",
 						(unsigned int) tcp->u_rval);
 				} else
@@ -931,7 +931,7 @@ syscall_exiting_trace(struct tcb *tcp, struct timeval tv, int res)
 				break;
 			case RVAL_UDECIMAL:
 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
-				if (current_wordsize < sizeof(tcp->u_rval)) {
+				if (current_klongsize < sizeof(tcp->u_rval)) {
 					tprintf("= %u",
 						(unsigned int) tcp->u_rval);
 				} else