chmod.c: make use of RVAL_DECODED

* chmod.c (decode_chmod): Change to return void.
(sys_chmod, sys_fchmodat): Update callers.  Update for RVAL_DECODED.
(sys_fchmod): Update for RVAL_DECODED.

Author: ldv-alt

chmod.c

@@ -1,32 +1,31 @@
 #include "defs.h"
 
-static int
-decode_chmod(struct tcb *tcp, int offset)
+static void
+decode_chmod(struct tcb *tcp, const int offset)
 {
-	if (entering(tcp)) {
-		printpath(tcp, tcp->u_arg[offset]);
-		tprintf(", %#lo", tcp->u_arg[offset + 1]);
-	}
-	return 0;
+	printpath(tcp, tcp->u_arg[offset]);
+	tprintf(", %#lo", tcp->u_arg[offset + 1]);
 }
 
 SYS_FUNC(chmod)
 {
-	return decode_chmod(tcp, 0);
+	decode_chmod(tcp, 0);
+
+	return RVAL_DECODED;
 }
 
 SYS_FUNC(fchmodat)
 {
-	if (entering(tcp))
-		print_dirfd(tcp, tcp->u_arg[0]);
-	return decode_chmod(tcp, 1);
+	print_dirfd(tcp, tcp->u_arg[0]);
+	decode_chmod(tcp, 1);
+
+	return RVAL_DECODED;
 }
 
 SYS_FUNC(fchmod)
 {
-	if (entering(tcp)) {
-		printfd(tcp, tcp->u_arg[0]);
-		tprintf(", %#lo", tcp->u_arg[1]);
-	}
-	return 0;
+	printfd(tcp, tcp->u_arg[0]);
+	tprintf(", %#lo", tcp->u_arg[1]);
+
+	return RVAL_DECODED;
 }