From: Mike Frysinger <vapier@gentoo.org>
Date: Thu, 26 Feb 2015 19:16:13 +0000 (-0500)
Subject: hppa: fix fanotify_mark decoding
X-Git-Tag: v4.10~67
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=28e3d6fd1ce422b40d6eb689f7b0a1b1a0640fd8;p=strace

hppa: fix fanotify_mark decoding

The parisc kernel has some legacy baggage here and decodes the 64bit
field in the reverse order.  Handle it in strace too.

* fanotify.c [HPPA] (sys_fanotify_mark): Reverse the mask bits.
---

diff --git a/fanotify.c b/fanotify.c
index e421b01e..63816b8d 100644
--- a/fanotify.c
+++ b/fanotify.c
@@ -52,6 +52,10 @@ sys_fanotify_mark(struct tcb *tcp)
 	 * but kernel uses the lower 32 bits only.
 	 */
 	argn = getllval(tcp, &mask, 2);
+#ifdef HPPA
+	/* Parsic is weird.  See arch/parisc/kernel/sys_parisc32.c.  */
+	mask = (mask << 32) | (mask >> 32);
+#endif
 	printflags(fan_event_flags, mask, "FAN_???");
 	tprints(", ");
 	if ((int) tcp->u_arg[argn] == FAN_NOFD)