[PATCH 2/2] virfile: Fix build with glibc 2.36

[Cole Robinson]

With glibc 2.36, sys/mount.h and linux/mount.h conflict:
https://sourceware.org/glibc/wiki/Release/2.36#Usage_of_.3Clinux.2Fmount.h.3E_and_.3Csys.2Fmount.h.3E

virfile.c imports sys/mount.h and linux/fs.h, which pulls in
linux/mount.h.

Manually define the constants we need from linux/fs.h, like was
done in llvm:

https://reviews.llvm.org/rGb379129c4beb3f26223288627a1291739f33af02

Signed-off-by: Cole Robinson <crobinso at redhat.com>
---
 src/util/virfile.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/util/virfile.c b/src/util/virfile.c
index 99da058db3..65d6d2a701 100644
--- a/src/util/virfile.c
+++ b/src/util/virfile.c
@@ -71,7 +71,9 @@
 # endif
 # include <sys/ioctl.h>
 # include <linux/cdrom.h>
-# include <linux/fs.h>
+# define FS_IOC_GETFLAGS _IOR('f', 1, long)
+# define FS_IOC_SETFLAGS _IOR('f', 2, long)
+# define FS_NOCOW_FL 0x00800000
 #endif
 
 #if WITH_LIBATTR
-- 
2.36.1