Accept zero value for fuse_conn_info options

This may not make sense for all options, but it's good practice.

diff --git a/lib/helper.c b/lib/helper.c
index a76c19d9dbf5ec27a58fa8cf5b6d6909aa1d34ca..31640b6e6937c8bf685847ed817ad9d358f97282 100644 (file)
--- a/lib/helper.c
+++ b/lib/helper.c
@@ -74,15 +74,24 @@ struct fuse_conn_info_opts {
        unsigned max_background;
        unsigned congestion_threshold;
        unsigned time_gran;
+       int set_max_write;
+       int set_max_readahead;
+       int set_max_background;
+       int set_congestion_threshold;
+       int set_time_gran;
 };
 
 #define CONN_OPTION(t, p, v)                                   \
        { t, offsetof(struct fuse_conn_info_opts, p), v }
 static const struct fuse_opt conn_info_opt_spec[] = {
        CONN_OPTION("max_write=%u", max_write, 0),
+       CONN_OPTION("max_write=", set_max_write, 1),
        CONN_OPTION("max_readahead=%u", max_readahead, 0),
+       CONN_OPTION("max_readahead=", set_max_readahead, 1),
        CONN_OPTION("max_background=%u", max_background, 0),
+       CONN_OPTION("max_background=", set_max_background, 1),
        CONN_OPTION("congestion_threshold=%u", congestion_threshold, 0),
+       CONN_OPTION("congestion_threshold=", set_congestion_threshold, 1),
        CONN_OPTION("sync_read", sync_read, 1),
        CONN_OPTION("async_read", async_read, 1),
        CONN_OPTION("atomic_o_trunc", atomic_o_trunc, 1),
@@ -108,6 +117,7 @@ static const struct fuse_opt conn_info_opt_spec[] = {
        CONN_OPTION("writeback_cache", writeback_cache, 1),
        CONN_OPTION("no_writeback_cache", no_writeback_cache, 1),
        CONN_OPTION("time_gran=%u", time_gran, 0),
+       CONN_OPTION("time_gran=", set_time_gran, 1),
        FUSE_OPT_END
 };
 
@@ -329,15 +339,15 @@ out1:
 void fuse_apply_conn_info_opts(struct fuse_conn_info_opts *opts,
                               struct fuse_conn_info *conn)
 {
-       if(opts->max_write)
+       if(opts->set_max_write)
                conn->max_write = opts->max_write;
-       if(opts->max_background)
+       if(opts->set_max_background)
                conn->max_background = opts->max_background;
-       if(opts->congestion_threshold)
+       if(opts->set_congestion_threshold)
                conn->congestion_threshold = opts->congestion_threshold;
-       if(opts->time_gran)
+       if(opts->set_time_gran)
                conn->time_gran = opts->time_gran;
-       if(opts->max_readahead)
+       if(opts->set_max_readahead)
                conn->max_readahead = opts->max_readahead;
 
 #define LL_ENABLE(cond,cap) \