conn->want conversion: Fix fuse_apply_conn_info_opts()

fuse_apply_conn_info_opts() was applying to 'want_ext',
which would cause conflicts with 'want' if the application
applied its own flags to 'conn->want'.

Solution is:
    - to move fuse_{set,unset,get}_feature_flag and
      convert_to_conn_want_ext() to fuse_lowlevel.c and
      to define them as part of the public API, although
      convert_to_conn_want_ext() should not be used - it is
      currently needed to be a public function due as it needs
      to be defined for the tests.

Related to https://github.com/libfuse/libfuse/issues/1171 and
https://github.com/libfuse/libfuse/pull/1172.

Closes: https://github.com/libfuse/libfuse/issues/1171
Signed-off-by: Bernd Schubert <bschubert@ddn.com>
(cherry picked from commit baadab0492a495fda98216b351976d2e5d6d0866)

1 files changed, 1 insertions, 8 deletions

diff --git a/lib/fuse.c b/lib/fuse.c
index 4964de2..8591454 100644
--- a/lib/fuse.c
+++ b/lib/fuse.c
@@ -2611,15 +2611,8 @@ void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn,
 		fuse_unset_feature_flag(conn, FUSE_CAP_POSIX_LOCKS);
 	if (!fs->op.flock)
 		fuse_unset_feature_flag(conn, FUSE_CAP_FLOCK_LOCKS);
-	if (fs->op.init) {
-		uint64_t want_ext_default = conn->want_ext;
-		uint32_t want_default = fuse_lower_32_bits(conn->want_ext);
-
-		conn->want = want_default;
+	if (fs->op.init)
 		fs->user_data = fs->op.init(conn, cfg);
-
-		convert_to_conn_want_ext(conn, want_ext_default, want_default);
-	}
 }
 
 static int fuse_init_intr_signal(int signum, int *installed);