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configure: check for FUSE copy_file_range

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check if the version of FUSE supports copy_file_range.

It fixes the build on RHEL 8.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2019-11-18 13:41:51 +01:00
parent 34794cf17f
commit d077ea28e3
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GPG Key ID: E4730F97F60286ED
2 changed files with 20 additions and 2 deletions
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20
configure.ac
View File

@ -49,10 +49,28 @@ void foo()
],
[cache_readdir=1],
[cache_readdir=0])
AC_COMPILE_IFELSE(
[
AC_LANG_SOURCE([
#define FUSE_USE_VERSION 32
#include <fuse_lowlevel.h>
void foo()
{
struct fuse_lowlevel_ops ops;
ops.copy_file_range = 0;
}])
],
[fuse_has_copy_file_range=1],
[fuse_has_copy_file_range=0])
CFLAGS=$old_CFLAGS
LDFLAGS=$old_LDFLAGS
AC_DEFINE_UNQUOTED([HAVE_FUSE_CACHE_READDIR], $cache_readdir, [Define if libfuse is available])
AC_DEFINE_UNQUOTED([HAVE_FUSE_CACHE_READDIR], $cache_readdir, [Define if libfuse cache_readdir is available])
AC_DEFINE_UNQUOTED([HAVE_FUSE_COPY_FILE_RANGE], $fuse_has_copy_file_range, [Define if libfuse has copy_file_range is available])
AC_SEARCH_LIBS([dlopen], [dl], [], [AC_MSG_ERROR([unable to find dlopen()])])

2
main.c
View File

@ -4887,7 +4887,7 @@ static struct fuse_lowlevel_ops ovl_oper =
.fsyncdir = ovl_fsyncdir,
.ioctl = ovl_ioctl,
.fallocate = ovl_fallocate,
#ifdef HAVE_COPY_FILE_RANGE
#if HAVE_COPY_FILE_RANGE && HAVE_FUSE_COPY_FILE_RANGE
.copy_file_range = ovl_copy_file_range,
#endif
};