passthrough_ll: fix fallocate variant ifdefs (#449)

If fallocate isn't available we incorrectly check for the value of
HAVE_POSIX_FALLOCATE rather than it being defined.
We also fail to initialise 'err' in the case where neither are defined.

Fixes: 5fc562c90d7925963467 ("Add fallocate and use it instead of ...")
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

diff --git a/example/passthrough_ll.c b/example/passthrough_ll.c
index f0bc727ded2c6925ad99327d0b3f80c0b9f408e2..fc7178477a7979878c95dac3ee7b540a8e20ff76 100644 (file)
--- a/example/passthrough_ll.c
+++ b/example/passthrough_ll.c
@@ -928,7 +928,7 @@ static void lo_statfs(fuse_req_t req, fuse_ino_t ino)
 static void lo_fallocate(fuse_req_t req, fuse_ino_t ino, int mode,
                         off_t offset, off_t length, struct fuse_file_info *fi)
 {
-       int err;
+       int err = EOPNOTSUPP;
        (void) ino;
 
 #ifdef HAVE_FALLOCATE
@@ -936,7 +936,7 @@ static void lo_fallocate(fuse_req_t req, fuse_ino_t ino, int mode,
        if (err < 0)
                err = errno;
 
-#elif HAVE_POSIX_FALLOCATE
+#elif defined(HAVE_POSIX_FALLOCATE)
        if (mode) {
                fuse_reply_err(req, EOPNOTSUPP);
                return;