return different non-zero error codes (#290)

Return different error codes from fuse_main()

2 files changed, 15 insertions, 6 deletions

diff --git a/include/fuse.h b/include/fuse.h
index 740119d..7b63c42 100644
--- a/include/fuse.h
+++ b/include/fuse.h
@@ -812,6 +812,15 @@ struct fuse_context {
  *
  * Note: this is currently implemented as a macro.
  *
+ * The following error codes may be returned from fuse_main():
+ *   1: Invalid option arguments
+ *   2: No mount point specified
+ *   3: FUSE setup failed
+ *   4: Mounting failed
+ *   5: Failed to daemonize (detach from session)
+ *   6: Failed to set up signal handlers
+ *   7: An error occured during the life of the file system
+ *
  * @param argc the argument counter passed to the main() function
  * @param argv the argument vector passed to the main() function
  * @param op the file system operation
diff --git a/lib/helper.c b/lib/helper.c
index 4e82692..07cef81 100644
--- a/lib/helper.c
+++ b/lib/helper.c
@@ -303,30 +303,30 @@ int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
 	if (!opts.show_help &&
 	    !opts.mountpoint) {
 		fprintf(stderr, "error: no mountpoint specified\n");
-		res = 1;
+		res = 2;
 		goto out1;
 	}
 
 
 	fuse = fuse_new_31(&args, op, op_size, user_data);
 	if (fuse == NULL) {
-		res = 1;
+		res = 3;
 		goto out1;
 	}
 
 	if (fuse_mount(fuse,opts.mountpoint) != 0) {
-		res = 1;
+		res = 4;
 		goto out2;
 	}
 
 	if (fuse_daemonize(opts.foreground) != 0) {
-		res = 1;
+		res = 5;
 		goto out3;
 	}
 
 	struct fuse_session *se = fuse_get_session(fuse);
 	if (fuse_set_signal_handlers(se) != 0) {
-		res = 1;
+		res = 6;
 		goto out3;
 	}
 
@@ -339,7 +339,7 @@ int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
 		res = fuse_loop_mt_32(fuse, &loop_config);
 	}
 	if (res)
-		res = 1;
+		res = 7;
 
 	fuse_remove_signal_handlers(se);
 out3: