fossil: import from plan 9

R=rsc
https://codereview.appspot.com/7988047

1 files changed, 258 insertions, 0 deletions

diff --git a/src/cmd/fossil/9.h b/src/cmd/fossil/9.h
new file mode 100644
index 00000000..b7bdec26
--- /dev/null
+++ b/src/cmd/fossil/9.h
@@ -0,0 +1,258 @@
+#include <auth.h>
+#include <fcall.h>
+
+enum {
+	NFidHash	= 503,
+};
+
+typedef struct Con Con;
+typedef struct DirBuf DirBuf;
+typedef struct Excl Excl;
+typedef struct Fid Fid;
+typedef struct Fsys Fsys;
+typedef struct Msg Msg;
+
+#pragma incomplete DirBuf
+#pragma incomplete Excl
+#pragma incomplete Fsys
+
+struct Msg {
+	uchar*	data;
+	u32int	msize;			/* actual size of data */
+	Fcall	t;
+	Fcall	r;
+	Con*	con;
+
+	Msg*	anext;			/* allocation free list */
+
+	Msg*	mnext;			/* all active messsages on this Con */
+	Msg* 	mprev;
+
+	int	state;			/* */
+
+	Msg*	flush;			/* flushes waiting for this Msg */
+
+	Msg*	rwnext;			/* read/write queue */
+	int	nowq;			/* do not place on write queue */
+};
+
+enum {
+	MsgN		= 0,
+	MsgR		= 1,
+	Msg9		= 2,
+	MsgW		= 3,
+	MsgF		= 4,
+};
+
+enum {
+	ConNoneAllow	= 1<<0,
+	ConNoAuthCheck	= 1<<1,
+	ConNoPermCheck	= 1<<2,
+	ConWstatAllow	= 1<<3,
+	ConIPCheck	= 1<<4,
+};
+struct Con {
+	char*	name;
+	uchar*	data;			/* max, not negotiated */
+	int	isconsole;		/* immutable */
+	int	flags;			/* immutable */
+	char	remote[128];		/* immutable */
+	VtLock*	lock;
+	int	state;
+	int	fd;
+	Msg*	version;
+	u32int	msize;			/* negotiated with Tversion */
+	VtRendez* rendez;
+
+	Con*	anext;			/* alloc */
+	Con*	cnext;			/* in use */
+	Con*	cprev;
+
+	VtLock*	alock;
+	int	aok;			/* authentication done */
+
+	VtLock*	mlock;
+	Msg*	mhead;			/* all Msgs on this connection */
+	Msg*	mtail;
+	VtRendez* mrendez;
+
+	VtLock*	wlock;
+	Msg*	whead;			/* write queue */
+	Msg*	wtail;
+	VtRendez* wrendez;
+
+	VtLock*	fidlock;		/* */
+	Fid*	fidhash[NFidHash];
+	Fid*	fhead;
+	Fid*	ftail;
+	int	nfid;
+};
+
+enum {
+	ConDead		= 0,
+	ConNew		= 1,
+	ConDown		= 2,
+	ConInit		= 3,
+	ConUp		= 4,
+	ConMoribund	= 5,
+};
+
+struct Fid {
+	VtLock*	lock;
+	Con*	con;
+	u32int	fidno;
+	int	ref;			/* inc/dec under Con.fidlock */
+	int	flags;
+
+	int	open;
+	Fsys*	fsys;
+	File*	file;
+	Qid	qid;
+	char*	uid;
+	char*	uname;
+	DirBuf*	db;
+	Excl*	excl;
+
+	VtLock*	alock;			/* Tauth/Tattach */
+	AuthRpc* rpc;
+	char*	cuname;
+
+	Fid*	sort;			/* sorted by uname in cmdWho */
+	Fid*	hash;			/* lookup by fidno */
+	Fid*	next;			/* clunk session with Tversion */
+	Fid*	prev;
+};
+
+enum {					/* Fid.flags and fidGet(..., flags) */
+	FidFCreate	= 0x01,
+	FidFWlock	= 0x02,
+};
+
+enum {					/* Fid.open */
+	FidOCreate	= 0x01,
+	FidORead	= 0x02,
+	FidOWrite	= 0x04,
+	FidORclose	= 0x08,
+};
+
+/*
+ * 9p.c
+ */
+extern int (*rFcall[Tmax])(Msg*);
+extern int validFileName(char*);
+
+/*
+ * 9auth.c
+ */
+extern int authCheck(Fcall*, Fid*, Fsys*);
+extern int authRead(Fid*, void*, int);
+extern int authWrite(Fid*, void*, int);
+
+/*
+ * 9dir.c
+ */
+extern void dirBufFree(DirBuf*);
+extern int dirDe2M(DirEntry*, uchar*, int);
+extern int dirRead(Fid*, uchar*, int, vlong);
+
+/*
+ * 9excl.c
+ */
+extern int exclAlloc(Fid*);
+extern void exclFree(Fid*);
+extern void exclInit(void);
+extern int exclUpdate(Fid*);
+
+/*
+ * 9fid.c
+ */
+extern void fidClunk(Fid*);
+extern void fidClunkAll(Con*);
+extern Fid* fidGet(Con*, u32int, int);
+extern void fidInit(void);
+extern void fidPut(Fid*);
+
+/*
+ * 9fsys.c
+ */
+extern void fsysFsRlock(Fsys*);
+extern void fsysFsRUnlock(Fsys*);
+extern Fs* fsysGetFs(Fsys*);
+extern Fsys* fsysGet(char*);
+extern char* fsysGetName(Fsys*);
+extern File* fsysGetRoot(Fsys*, char*);
+extern Fsys* fsysIncRef(Fsys*);
+extern int fsysInit(void);
+extern int fsysNoAuthCheck(Fsys*);
+extern int fsysNoPermCheck(Fsys*);
+extern void fsysPut(Fsys*);
+extern int fsysWstatAllow(Fsys*);
+
+/*
+ * 9lstn.c
+ */
+extern int lstnInit(void);
+
+/*
+ * 9proc.c
+ */
+extern Con* conAlloc(int, char*, int);
+extern void conInit(void);
+extern void msgFlush(Msg*);
+extern void msgInit(void);
+
+/*
+ * 9srv.c
+ */
+extern int srvInit(void);
+
+/*
+ * 9user.c
+ */
+extern int groupLeader(char*, char*);
+extern int groupMember(char*, char*);
+extern int groupWriteMember(char*);
+extern char* unameByUid(char*);
+extern char* uidByUname(char*);
+extern int usersInit(void);
+extern int usersFileRead(char*);
+extern int validUserName(char*);
+
+extern char* uidadm;
+extern char* unamenone;
+extern char* uidnoworld;
+
+/*
+ * Ccli.c
+ */
+extern int cliAddCmd(char*, int (*)(int, char*[]));
+extern int cliError(char*, ...);
+extern int cliInit(void);
+extern int cliExec(char*);
+#pragma	varargck	argpos	cliError	1
+
+/*
+ * Ccmd.c
+ */
+extern int cmdInit(void);
+
+/*
+ * Ccons.c
+ */
+extern int consPrompt(char*);
+extern int consInit(void);
+extern int consOpen(int, int, int);
+extern int consTTY(void);
+extern int consWrite(char*, int);
+
+/*
+ * Clog.c
+ */
+extern int consPrint(char*, ...);
+extern int consVPrint(char*, va_list);
+#pragma	varargck	argpos	consPrint	1
+
+/*
+ * fossil.c
+ */
+extern int Dflag;