am.h

早期freebsd实现

/*
 * Copyright (c) 1990 Jan-Simon Pendry
 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)am.h	5.6 (Berkeley) 6/6/93
 *
 * $Id: am.h,v 5.2.2.1 1992/02/09 15:09:54 jsp beta $
 *
 */

#include "config.h"

/*
 * Global declarations
 */
#include <sys/param.h>
#include <sys/socket.h>
#include <rpc/rpc.h>
#include "nfs_prot.h"
#ifdef MNTENT_HDR
#include MNTENT_HDR
#endif /* MNTENT_HDR */
#include <assert.h>

#ifdef DEBUG_MEM
#include <malloc.h>
#endif /* DEBUG_MEM */

#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64
#endif /* MAXHOSTNAMELEN */

#ifndef MNTTYPE_AUTO
#define MNTTYPE_AUTO "auto"
#endif /* MNTTYPE_AUTO */

#ifndef FALSE
#define FALSE 0
#define TRUE 1
#endif /* FALSE */

#ifndef ROOT_MAP
#define	ROOT_MAP "\"root\""
#endif /* ROOT_MAP */

/*
 * Flags from command line
 */
extern int print_pid;		/* Print pid to stdout */
extern int normalize_hosts;	/* Normalize host names before use */
extern int restart_existing_mounts;
#ifdef HAS_NIS_MAPS
extern char *domain;		/* NIS domain to use */
#endif /* HAS_NIS_MAPS */
extern int am_timeo;		/* Cache period */
extern int afs_timeo;		/* AFS timeout */
extern int afs_retrans;		/* AFS retrans */
extern int am_timeo_w;		/* Unmount timeout */
extern char *mtab;		/* Mount table */

typedef enum {
	Start,
	Run,
	Finishing,
	Quit,
	Done
} serv_state;

extern serv_state amd_state;	/* Should we go now */
extern int immediate_abort;	/* Should close-down unmounts be retried */
extern time_t do_mapc_reload;	/* Flush & reload mount map cache */

/*
 * Useful constants
 */
extern char pid_fsname[];	/* kiska.southseas.nz:(pid%d) */
extern char hostd[];		/* "kiska.southseas.nz" */
extern char *hostdomain;	/* "southseas.nz" */
extern char *op_sys;		/* "sos4" */
extern char *arch;		/* "sun4" */
extern char *karch;		/* "sun4c" */
extern char *cluster;		/* "r+d-kluster" */
extern char *endian;		/* "big" */
extern char *auto_dir;		/* "/a" */
extern char copyright[];	/* Copyright info */
extern char version[];		/* Version info */

typedef struct am_ops am_ops;
typedef struct am_node am_node;
typedef struct am_opts am_opts;
typedef struct mntfs mntfs;
typedef struct fserver fserver;
typedef struct fsrvinfo fsrvinfo;

/*
 * Debug defns.
 */
#ifdef DEBUG
#define	DEBUG_MTAB	"./mtab"

extern int debug_flags;		/* Debug options */

#define	D_DAEMON	0x0001	/* Enter daemon mode */
#define	D_TRACE		0x0002	/* Do protocol trace */
#define	D_FULL		0x0004	/* Do full trace */
#define	D_MTAB		0x0008	/* Use local mtab */
#define	D_AMQ		0x0010	/* Register amq program */
#define	D_STR		0x0020	/* Debug string munging */
#define	D_MEM		0x0040	/* Trace memory allocations */

/*
 * Normally, don't enter daemon mode, and don't register amq
 */
#define	D_TEST	(~(D_DAEMON|D_MEM|D_STR))
#endif /* DEBUG */

/*
 * Global variables.
 */
extern unsigned short nfs_port;	/* Our NFS service port */
extern struct in_addr myipaddr;	/* (An) IP address of this host */

extern int foreground;		/* Foreground process */
extern time_t next_softclock;	/* Time to call softclock() */
extern int task_notify_todo;	/* Task notifier needs running */
#ifdef HAS_TFS
extern int nfs_server_code_available;
#endif /* HAS_TFS */
extern int last_used_map;	/* Last map being used for mounts */
extern AUTH *nfs_auth;		/* Dummy uthorisation for remote servers */
extern am_node **exported_ap;	/* List of nodes */
extern int first_free_map;	/* First free node */
extern am_node *root_node;	/* Node for "root" */
extern char *wire;		/* Name of primary connected network */
#define	NEXP_AP	(254)
#define NEXP_AP_MARGIN (128)

typedef int (*task_fun)P((voidp));
typedef void (*cb_fun)P((int, int, voidp));
typedef void (*fwd_fun)P((voidp, int, struct sockaddr_in *,
				struct sockaddr_in *, voidp, int));

/*
 * String comparison macros
 */
#define STREQ(s1, s2) (strcmp((s1), (s2)) == 0)
#define FSTREQ(s1, s2) ((*(s1) == *(s2)) && STREQ((s1),(s2)))

/*
 * Linked list
 */
typedef struct qelem qelem;
struct qelem {
	qelem *q_forw;
	qelem *q_back;
};
#define	FIRST(ty, q)	((ty *) ((q)->q_forw))
#define	LAST(ty, q)	((ty *) ((q)->q_back))
#define	NEXT(ty, q)	((ty *) (((qelem *) q)->q_forw))
#define	PREV(ty, q)	((ty *) (((qelem *) q)->q_back))
#define	HEAD(ty, q)	((ty *) q)
#define	ITER(v, ty, q) \
	for ((v) = FIRST(ty,(q)); (v) != HEAD(ty,(q)); (v) = NEXT(ty,(v)))

/*
 * List of mount table entries
 */
typedef struct mntlist mntlist;
struct mntlist {
	struct mntlist *mnext;
	struct mntent *mnt;
};

/*
 * Mount map
 */
typedef struct mnt_map mnt_map;

/*
 * Global routines
 */
extern int atoi P((Const char *)); /* C */
extern void am_mounted P((am_node*));
extern void am_unmounted P((am_node*));
extern int background(P_void);
extern int bind_resv_port P((int, unsigned short*));
extern int compute_mount_flags P((struct mntent *));
extern int softclock(P_void);
#ifdef DEBUG
extern int debug_option P((char*));
#endif /* DEBUG */
extern void deslashify P((char*));
/*extern void domain_strip P((char*, char*));*/
extern mntfs* dup_mntfs P((mntfs*));
extern fserver* dup_srvr P((fserver*));
extern int eval_fs_opts P((am_opts*, char*, char*, char*, char*, char*));
extern char* expand_key P((char*));
extern am_node* exported_ap_alloc(P_void);
extern am_node* find_ap P((char*));
extern am_node* find_mf P((mntfs*));
extern mntfs* find_mntfs P((am_ops*, am_opts*, char*, char*, char*, char*, char*));
extern void flush_mntfs(P_void);
extern void flush_nfs_fhandle_cache P((fserver*));
extern void forcibly_timeout_mp P((am_node*));
extern FREE_RETURN_TYPE free P((voidp)); /* C */
extern void free_mntfs P((mntfs*));
extern void free_opts P((am_opts*));
extern void free_map P((am_node*));
extern void free_mntlist P((mntlist*));
extern void free_srvr P((fserver*));
extern int fwd_init(P_void);
extern int fwd_packet P((int, voidp, int, struct sockaddr_in *,
		struct sockaddr_in *, voidp, fwd_fun));
extern void fwd_reply(P_void);
extern void get_args P((int, char*[]));
extern char *getwire P((void));
#ifdef NEED_MNTOPT_PARSER
extern char *hasmntopt P((struct mntent*, char*));
#endif /* NEED_MNTOPT_PARSER */
extern int hasmntval P((struct mntent*, char*));
extern void host_normalize P((char **));
extern char *inet_dquad P((char*, unsigned long));
extern void init_map P((am_node*, char*));
extern void insert_am P((am_node*, am_node*));
extern void ins_que P((qelem*, qelem*));
extern int islocalnet P((unsigned long));
extern int make_nfs_auth P((void));
extern void make_root_node(P_void);
extern int make_rpc_packet P((char*, int, u_long, struct rpc_msg*, voidp, xdrproc_t, AUTH*));
extern void map_flush_srvr P((fserver*));
extern void mapc_add_kv P((mnt_map*, char*, char*));
extern mnt_map* mapc_find P((char*, char*));
extern void mapc_free P((mnt_map*));
extern int mapc_keyiter P((mnt_map*, void (*)(char*,voidp), voidp));
extern int mapc_search P((mnt_map*, char*, char**));
extern void mapc_reload(P_void);
extern void mapc_showtypes P((FILE*));
extern int mkdirs P((char*, int));
extern void mk_fattr P((am_node*, enum ftype));
extern void mnt_free P((struct mntent*));
extern int mount_auto_node P((char*, voidp));
extern int mount_automounter P((int));
extern int mount_exported(P_void);
extern int mount_fs P((struct mntent*, int, caddr_t, int, MTYPE_TYPE));
/*extern int mount_nfs_fh P((struct fhstatus*, char*, char*, char*, mntfs*));*/
extern int mount_node P((am_node*));
extern mntfs* new_mntfs(P_void);
extern void new_ttl P((am_node*));
extern am_node* next_map P((int*));
extern int nfs_srvr_port P((fserver*, u_short*, voidp));
extern void normalize_slash P((char*));