File system stuff.

include/fs.h

@@ -0,0 +1,41 @@
+#ifndef _FS_H_
+#define _FS_H_ 1
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Simple user-level 9P client.
+ */
+
+typedef struct Fsys Fsys;
+typedef struct Fid Fid;
+
+Fsys *fsinit(int);
+Fsys *fsmount(int);
+
+int fsversion(Fsys*, int, char*, int);
+Fid *fsauth(Fsys*, char*);
+Fid *fsattach(Fsys*, Fid*, char*, char*);
+Fid *fsopen(Fsys*, char*, int);
+int fsopenfd(Fsys*, char*, int);
+long fsread(Fid*, void*, long);
+long fsreadn(Fid*, void*, long);
+long fswrite(Fid*, void*, long);
+void fsclose(Fid*);
+void fsunmount(Fsys*);
+int fsrpc(Fsys*, Fcall*, Fcall*, void**);
+Fid *fswalk(Fid*, char*);
+struct Dir;	/* in case there's no lib9.h */
+long fsdirread(Fid*, struct Dir**);
+long fsdirreadall(Fid*, struct Dir**);
+struct Dir *fsdirstat(Fsys*, char*);
+struct Dir *fsdirfstat(Fid*);
+int fsdirwstat(Fsys*, char*, struct Dir*);
+int fsdirfwstat(Fid*, struct Dir*);
+Fid *fsroot(Fsys*);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

include/mux.h

@@ -0,0 +1,54 @@
+typedef struct Mux Mux;
+typedef struct Muxrpc Muxrpc;
+typedef struct Muxqueue Muxqueue;
+
+struct Muxrpc
+{
+	Muxrpc *next;
+	Muxrpc *prev;
+	Rendez r;
+	uint tag;
+	void *p;
+};
+
+struct Mux
+{
+	uint mintag;	/* to be filled by client */
+	uint maxtag;
+	int (*send)(Mux*, void*);
+	void *(*recv)(Mux*);
+	int (*gettag)(Mux*, void*);
+	int (*settag)(Mux*, void*, uint);
+	void *aux;	/* for private use by client */
+
+/* private */
+	QLock lk;
+	QLock inlk;
+	QLock outlk;
+	Rendez tagrend;
+	Rendez rpcfork;
+	Muxqueue *readq;
+	Muxqueue *writeq;
+	uint nwait;
+	uint mwait;
+	uint freetag;
+	Muxrpc **wait;
+	uint muxer;
+	Muxrpc sleep;
+};
+
+void	muxinit(Mux*);
+void*	muxrpc(Mux*, void*);
+void	muxthreads(Mux*);
+
+/* private */
+int	_muxsend(Mux*, void*);
+void*	_muxrecv(Mux*);
+void	_muxsendproc(void*);
+void	_muxrecvproc(void*);
+Muxqueue *_muxqalloc(void);
+int _muxqsend(Muxqueue*, void*);
+void *_muxqrecv(Muxqueue*);
+void _muxqhangup(Muxqueue*);
+void *_muxnbqrecv(Muxqueue*);
+