libfuse custom communication interface

libfuse can now be used without having a mount interface.

3 files changed, 24 insertions, 0 deletions

diff --git a/include/fuse_lowlevel.h b/include/fuse_lowlevel.h
index 53f0fcf..955482c 100644
--- a/include/fuse_lowlevel.h
+++ b/include/fuse_lowlevel.h
@@ -1955,6 +1955,25 @@ struct fuse_session *fuse_session_new(struct fuse_args *args,
 				      size_t op_size, void *userdata);
 
 /**
+ * Set a file descriptor for the session.
+ *
+ * This function can be used if you want to have a custom communication
+ * interface instead of using a mountpoint. In practice, this means that instead
+ * of calling fuse_session_mount() and fuse_session_unmount(), one could call
+ * fuse_custom_session_fd() where fuse_session_mount() would have otherwise been
+ * called.
+ *
+ * This function does not open or close any file descriptors, meaning it is the
+ * responsibility of the caller to provide a valid file descriptor, such as a
+ * accepted socket. It is also the responsibility to close the socket.
+ *
+ * @param se session object
+ * @param fd file descriptor for the session
+ *
+ **/
+void fuse_custom_session_fd(struct fuse_session *se, int fd);
+
+/**
  * Mount a FUSE file system.
  *
  * @param mountpoint the mount point path
diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c
index e82cd9e..b6ffbd9 100644
--- a/lib/fuse_lowlevel.c
+++ b/lib/fuse_lowlevel.c
@@ -3009,6 +3009,10 @@ out1:
 	return NULL;
 }
 
+void fuse_custom_session_fd(struct fuse_session *se, int fd) {
+	se->fd = fd;
+}
+
 int fuse_session_mount(struct fuse_session *se, const char *mountpoint)
 {
 	int fd;
diff --git a/lib/fuse_versionscript b/lib/fuse_versionscript
index 7e50e75..f57c505 100644
--- a/lib/fuse_versionscript
+++ b/lib/fuse_versionscript
@@ -39,6 +39,7 @@ FUSE_3.0 {
 		fuse_session_new;
 		fuse_main_real;
 		fuse_mount;
+		fuse_custom_session_fd;
 		fuse_session_mount;
 		fuse_new;
 		fuse_opt_insert_arg;