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block/export/fuse.c: fix musl build 

Fix the following build failure on musl raised since version 6.0.0 and
4ca37a96a7
because musl does not define FALLOC_FL_ZERO_RANGE:

../block/export/fuse.c: In function 'fuse_fallocate':
../block/export/fuse.c:563:23: error: 'FALLOC_FL_ZERO_RANGE' undeclared (first use in this function)
  563 |     } else if (mode & FALLOC_FL_ZERO_RANGE) {
      |                       ^~~~~~~~~~~~~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/b96e3d364fd1f8bbfb18904a742e73327d308f64

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Message-Id: <20210809095101.1101336-1-fontaine.fabrice@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This commit is contained in:
Fabrice Fontaine 2021-08-09 11:51:01 +02:00 committed by Hanna Reitz
parent 632eda5404
commit 50482fda98
1 changed files with 6 additions and 2 deletions
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8
block/export/fuse.c
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@ -635,7 +635,9 @@ static void fuse_fallocate(fuse_req_t req, fuse_ino_t inode, int mode,
offset += size;
length -= size;
} while (ret == 0 && length > 0);
} else if (mode & FALLOC_FL_ZERO_RANGE) {
}
#ifdef CONFIG_FALLOCATE_ZERO_RANGE
else if (mode & FALLOC_FL_ZERO_RANGE) {
if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + length > blk_len) {
/* No need for zeroes, we are going to write them ourselves */
ret = fuse_do_truncate(exp, offset + length, false,
@ -654,7 +656,9 @@ static void fuse_fallocate(fuse_req_t req, fuse_ino_t inode, int mode,
offset += size;
length -= size;
} while (ret == 0 && length > 0);
} else if (!mode) {
}
#endif /* CONFIG_FALLOCATE_ZERO_RANGE */
else if (!mode) {
/* We can only fallocate at the EOF with a truncate */
if (offset < blk_len) {
fuse_reply_err(req, EOPNOTSUPP);