https://bugs.gentoo.org/406609 From 1a36d2ead2f45a21f74ccc332a534c1b788d6029 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Mon, 5 Mar 2012 00:35:21 -0500 Subject: [PATCH] libext2fs: check for fallocate symbol before using it If we have newer kernel headers which define FALLOC_FL_PUNCH_HOLE, but we are on an older glibc which lacks fallocate, we end up trying to use the func anyways. Check the ifdef that autoconf already set up for us. Reported-by: Ortwin Glueck Signed-off-by: Mike Frysinger --- lib/ext2fs/unix_io.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c index 9f0613a..da3f8fd 100644 --- a/lib/ext2fs/unix_io.c +++ b/lib/ext2fs/unix_io.c @@ -905,7 +905,7 @@ static errcode_t unix_discard(io_channel channel, unsigned long long block, goto unimplemented; #endif } else { -#ifdef FALLOC_FL_PUNCH_HOLE +#if defined(HAVE_FALLOCATE) && defined(FALLOC_FL_PUNCH_HOLE) /* * If we are not on block device, try to use punch hole * to reclaim free space. -- 1.7.8.4