buildroot/package/xen/0002-9pfs-include-linux-limits.h-for-XATTR_SIZE_MAX.patch
Alistair Francis 9d9a57a200 package/xen: Include linux/limits.h when building QEMU inside of Xen
If building Xen and not using glibc (using musl for example) the QEMU
project inside of Xen fails to build as it relys on the XATTR_SIZE_MAX
macro which is defined in <linux/limits.h>.

Glibc includes this header indirectly but as that is not part of the
POSIX standard other libraries don't neccessearily have this. To fix the
issue we explicitly include <linux/limits.h> to ensure the build works
for all libc libraries.

Fixes:
  http://autobuild.buildroot.net/results/bb1/bb1310eb1464d880a357ae5e491fd168361d25a0

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2017-07-29 15:37:28 +02:00

44 lines
1.6 KiB
Diff

Message-Id: <07010a2ad79559c412949f0005dbe3cb03d8416e.1498504812.git.ps@pks.im>
From: Patrick Steinhardt <ps@pks.im>
Date: Mon, 26 Jun 2017 21:20:45 +0200
Subject: [PATCH] 9pfs: include <linux/limits.h> for XATTR_SIZE_MAX
The function `v9fs_xattrcreate` makes use of the define `XATTR_SIZE_MAX`
to reject attempts of creating xattrs with an invalid size, which is
defined in <linux/limits.h>. On glibc-based systems, this header is
indirectly included via <limits.h>, <bits/posix1_lim.h>,
<bitts/local_lim.h>, but on other platforms this is not guaranteed due
to not being part of the POSIX standard. One examples are systems based
on musl libc, which do not include the <linux/limits.h> indirectly,
which leads to `XATTR_SIZE_MAX` being undefined.
Fix this error by directly include <linux/limits.h>. As the 9P fs code
is being Linux-based either way, we can simply do so without breaking
other platforms. This enables building 9pfs on musl-based systems.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
[ Changes by AF
- Apply to the QEMU tree inside of Xen
]
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
---
Upstream Status: Pending review and acceptance
tools/qemu-xen/hw/9pfs/9p.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/qemu-xen/hw/9pfs/9p.c b/tools/qemu-xen/hw/9pfs/9p.c
index 96d2683348..48cd558e96 100644
--- a/tools/qemu-xen/hw/9pfs/9p.c
+++ b/tools/qemu-xen/hw/9pfs/9p.c
@@ -13,6 +13,7 @@
#include "qemu/osdep.h"
#include <glib/gprintf.h>
+#include <linux/limits.h>
#include "hw/virtio/virtio.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
--
2.13.2