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freebsd-dev/contrib/amd/include/am_utils.h
Cy Schubert 449287a2a5 MFV r305100: Update amd from am-utils 6.1.5 to 6.2. 
Used extensively on my network over the past month.

Reviewed by:	pfg, brooks
Suggested by:	pfg
Obtained from:	ftp://ftp.am-utils.org/pub/am-utils/
MFC after:	6 weeks
Relnotes:	yes
Differential Revision:	D8405
2016-11-11 02:42:53 +00:00

537 lines
19 KiB
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/*
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 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. 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.
*
*
* File: am-utils/include/am_utils.h
*
*/
/*
* Definitions that are specific to the am-utils package.
*/
#ifndef _AM_UTILS_H
#define _AM_UTILS_H
#include "aux_conf.h"
/**************************************************************************/
/*** MACROS ***/
/**************************************************************************/
/*
* General macros.
*/
#ifndef FALSE
# define FALSE 0
#endif /* not FALSE */
#ifndef TRUE
# define TRUE 1
#endif /* not TRUE */
#ifndef MAX
# define MAX(a, b) ((a) > (b) ? (a) : (b))
#endif /* not MAX */
#ifndef MIN
# define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif /* not MIN */
#define ONE_HOUR (60 * 60) /* One hour in seconds */
#ifndef MAXHOSTNAMELEN
# ifdef HOSTNAMESZ
# define MAXHOSTNAMELEN HOSTNAMESZ
# else /* not HOSTNAMESZ */
# define MAXHOSTNAMELEN 256
# endif /* not HOSTNAMESZ */
#endif /* not MAXHOSTNAMELEN */
/*
* for hlfsd, and amd for detecting uid/gid
*/
#ifndef INVALIDID
/* this is also defined in include/am_utils.h */
# define INVALIDID (((unsigned short) ~0) - 3)
#endif /* not INVALIDID */
/*
* String comparison macros
*/
#define STREQ(s1, s2) (strcmp((s1), (s2)) == 0)
#define STRCEQ(s1, s2) (strcasecmp((s1), (s2)) == 0)
#define NSTREQ(s1, s2, n) (strncmp((s1), (s2), (n)) == 0)
#define NSTRCEQ(s1, s2, n) (strncasecmp((s1), (s2), (n)) == 0)
#define FSTREQ(s1, s2) ((*(s1) == *(s2)) && STREQ((s1),(s2)))
/*
* Logging options/flags
*/
#define XLOG_FATAL 0x0001
#define XLOG_ERROR 0x0002
#define XLOG_USER 0x0004
#define XLOG_WARNING 0x0008
#define XLOG_INFO 0x0010
#define XLOG_DEBUG 0x0020
#define XLOG_MAP 0x0040
#define XLOG_STATS 0x0080
/* log option compositions */
#define XLOG_MASK 0x00ff /* mask for all flags */
#define XLOG_MANDATORY (XLOG_FATAL|XLOG_ERROR) /* cannot turn these off */
#define XLOG_ALL (XLOG_FATAL|XLOG_ERROR|XLOG_USER|XLOG_WARNING|XLOG_INFO|XLOG_MAP|XLOG_STATS)
/* default: fatal + error + user + warning + info */
#define XLOG_DEFAULT (XLOG_MASK & (XLOG_ALL & ~XLOG_MAP & ~XLOG_STATS))
/* default: no logging options */
#define NO_SUBNET "notknown" /* default subnet name for no subnet */
#define NEXP_AP (1022) /* gdmr: was 254 */
#define NEXP_AP_MARGIN (128) /* ???? not used */
/*
* Linked list macros
*/
#define AM_FIRST(ty, q) ((ty *) ((q)->q_forw))
#define AM_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) = AM_FIRST(ty,(q)); (v) != HEAD(ty,(q)); (v) = NEXT(ty,(v)))
/* allocate anything of type ty */
#define ALLOC(ty) ((ty *) xmalloc(sizeof(ty)))
#define CALLOC(ty) ((ty *) xzalloc(sizeof(ty)))
/* simply allocate b bytes */
#define SALLOC(b) xmalloc((b))
/*
* Systems which have the mount table in a file need to read it before
* they can perform an unmount() system call.
*/
#define UMOUNT_FS(dir, mtb_name, unmount_flags) umount_fs(dir, mtb_name, unmount_flags)
/* next two are imported via $srcdir/conf/umount/umount_*.c */
extern int umount_fs(char *mntdir, const char *mnttabname, u_int unmount_flags);
#ifdef MNT2_GEN_OPT_FORCE
extern int umount2_fs(const char *mntdir, u_int unmount_flags);
#endif /* MNT2_GEN_OPT_FORCE */
/* unmount-related flags (special handling of autofs, forced/lazy, etc.) */
#define AMU_UMOUNT_FORCE 0x1
#define AMU_UMOUNT_DETACH 0x2
#define AMU_UMOUNT_AUTOFS 0x4
/*
* The following values can be tuned...
*/
#define ALLOWED_MOUNT_TIME 40 /* 40s for a mount */
/*
* RPC-related macros.
*/
#define RPC_XID_PORTMAP 0
#define RPC_XID_MOUNTD 1
#define RPC_XID_NFSPING 2
#define RPC_XID_WEBNFS 3
#define RPC_XID_MASK (0x0f) /* 16 id's for now */
#define MK_RPC_XID(type_id, uniq) ((type_id) | ((uniq) << 4))
/*
* What level of AMD are we backward compatible with?
* This only applies to externally visible characteristics.
* Rev.Minor.Branch.Patch (2 digits each)
*/
#define AMD_COMPAT 5000000 /* 5.0 */
/**************************************************************************/
/*** STRUCTURES AND TYPEDEFS ***/
/**************************************************************************/
/* some typedefs must come first */
typedef char *amq_string;
typedef struct _qelem qelem;
typedef struct mntlist mntlist;
/*
* Linked list
* (the name 'struct qelem' conflicts with linux's unistd.h)
*/
struct _qelem {
qelem *q_forw;
qelem *q_back;
};
/*
* Option tables
*/
struct opt_tab {
char *opt;
int flag;
};
/*
* Server states
*/
typedef enum {
Start,
Run,
Finishing,
Quit,
Done
} serv_state;
/*
* List of mount table entries
*/
struct mntlist {
struct mntlist *mnext;
mntent_t *mnt;
};
/*
* Mount map
*/
typedef struct mnt_map mnt_map;
/**************************************************************************/
/*** EXTERNALS ***/
/**************************************************************************/
/*
* Useful constants
*/
extern char *mnttab_file_name; /* Mount table */
extern char *cpu; /* "CPU type" */
extern char *endian; /* "big" */
extern char *hostdomain; /* "southseas.nz" */
extern char copyright[]; /* Copyright info */
extern char version[]; /* Version info */
/*
* Global variables.
*/
extern AUTH *nfs_auth; /* Dummy authorization for remote servers */
extern FILE *logfp; /* Log file */
extern SVCXPRT *nfsxprt;
extern char *PrimNetName; /* Name of primary connected network */
extern char *PrimNetNum; /* Name of primary connected network */
extern char *SubsNetName; /* Name of subsidiary connected network */
extern char *SubsNetNum; /* Name of subsidiary connected network */
extern void am_set_progname(char *pn); /* "amd" */
extern const char *am_get_progname(void); /* "amd" */
extern void am_set_hostname(char *hn);
extern const char *am_get_hostname(void);
extern pid_t am_set_mypid(void);
extern pid_t am_mypid;
extern int foreground; /* Foreground process */
extern int orig_umask; /* umask() on startup */
extern serv_state amd_state; /* Should we go now */
extern struct in_addr myipaddr; /* (An) IP address of this host */
extern struct opt_tab xlog_opt[];
extern u_short nfs_port; /* Our NFS service port */
/*
* Global routines
*/
extern CLIENT *get_mount_client(char *unused_host, struct sockaddr_in *sin, struct timeval *tv, int *sock, u_long mnt_version);
extern RETSIGTYPE sigchld(int);
extern bool_t xdr_amq_string(XDR *xdrs, amq_string *objp);
extern bool_t xdr_dirpath(XDR *xdrs, dirpath *objp);
extern char **strsplit(char *, int, int);
extern char *expand_selectors(char *);
extern char *get_version_string(void);
extern char *inet_dquad(char *, size_t, u_long);
extern char *print_wires(void);
extern char *str3cat(char *, char *, char *, char *);
extern char *strvcat(const char *, ...);
extern char *strealloc(char *, char *);
extern char *strip_selectors(char *, char *);
extern char *strnsave(const char *, int);
extern int amu_close(int fd);
extern int bind_resv_port(int, u_short *);
extern int cmdoption(char *, struct opt_tab *, u_int *);
extern int compute_automounter_mount_flags(mntent_t *);
extern int compute_mount_flags(mntent_t *);
extern void discard_nfs_args(void *, u_long);
extern u_long get_amd_program_number(void);
extern int getcreds(struct svc_req *, uid_t *, gid_t *, SVCXPRT *);
extern int hasmntval(mntent_t *, char *);
extern unsigned int hasmntvalerr(mntent_t *, char *, int *);
extern char *hasmntstr(mntent_t *, char *);
extern char *hasmnteq(mntent_t *, char *);
extern char *haseq(char *);
extern int is_network_member(const char *net);
extern int is_interface_local(u_long);
extern int islocalnet(u_long);
extern int make_rpc_packet(char *, int, u_long, struct rpc_msg *, voidp, XDRPROC_T_TYPE, AUTH *);
extern int mkdirs(char *, int);
extern int mount_fs(mntent_t *, int, caddr_t, int, MTYPE_TYPE, u_long, const char *, const char *, int);
extern void nfs_program_2(struct svc_req *rqstp, SVCXPRT *transp);
extern void nfs_program_3(struct svc_req *rqstp, SVCXPRT *transp);
#define get_nfs_dispatcher_version(a) \
((a) == nfs_program_2 ? NFS_VERSION : NFS_VERSION3)
extern int pickup_rpc_reply(voidp, int, voidp, XDRPROC_T_TYPE);
extern int switch_option(char *);
extern int switch_to_logfile(char *logfile, int orig_umask, int truncate_log);
extern mntlist *read_mtab(char *, const char *);
#ifndef HAVE_TRANSPORT_TYPE_TLI
extern struct sockaddr_in *amu_svc_getcaller(SVCXPRT *xprt);
#endif /* not HAVE_TRANSPORT_TYPE_TLI */
extern time_t time(time_t *);
extern void amu_get_myaddress(struct in_addr *iap, const char *preferred_localhost);
extern void amu_release_controlling_tty(void);
extern void compute_automounter_nfs_args(nfs_args_t *nap, mntent_t *mntp);
extern void discard_mntlist(mntlist *mp);
extern void free_mntlist(mntlist *);
extern void getwire(char **name1, char **number1);
extern void going_down(int);
extern void mnt_free(mntent_t *);
extern void plog(int, const char *,...)
__attribute__ ((__format__ (__printf__, 2, 3)));
extern void rmdirs(char *);
extern void rpc_msg_init(struct rpc_msg *, u_long, u_long, u_long);
extern void set_amd_program_number(u_long program);
extern void show_opts(int ch, struct opt_tab *);
extern void unregister_amq(void);
extern voidp xmalloc(int);
extern voidp xrealloc(voidp, int);
extern voidp xzalloc(int);
extern char *xstrdup(const char *);
extern int check_pmap_up(char *host, struct sockaddr_in* sin);
extern u_long get_nfs_version(char *host, struct sockaddr_in *sin, u_long nfs_version, const char *proto, u_long def);
extern int nfs_valid_version(u_long vers);
extern long get_server_pid(void);
extern void setup_sighandler(int signum, void (*handler)(int));
extern time_t clocktime(nfstime *nt);
#if defined(DEBUG) && (defined(HAVE_C99_VARARGS_MACROS) || defined(HAVE_GCC_VARARGS_MACROS))
# ifdef HAVE_C99_VARARGS_MACROS
#define xsnprintf(str,size,fmt,...) _xsnprintf(__FILE__,__LINE__,(str),(size),(fmt),__VA_ARGS__)
# endif /* HAVE_C99_VARARGS_MACROS */
# ifdef HAVE_GCC_VARARGS_MACROS
#define xsnprintf(str,size,fmt,args...) _xsnprintf(__FILE__,__LINE__,(str),(size),(fmt),args)
# endif /* HAVE_GCC_VARARGS_MACROS */
extern int _xsnprintf(const char *filename, int lineno, char *str, size_t size, const char *format, ...);
#define xvsnprintf(str,size,fmt,ap) _xvsnprintf(__FILE__,__LINE__,(str),(size),(fmt),(ap))
extern int _xvsnprintf(const char *filename, int lineno, char *str, size_t size, const char *format, va_list ap);
#else /* not DEBUG or no C99/GCC-style vararg cpp macros supported */
extern int xsnprintf(char *str, size_t size, const char *format, ...);
extern int xvsnprintf(char *str, size_t size, const char *format, va_list ap);
#endif /* not DEBUG or no C99/GCC-style vararg cpp macros supported */
#ifdef DEBUG
extern void _xstrlcat(const char *filename, int lineno, char *dst, const char *src, size_t len);
# define xstrlcat(d,s,l) _xstrlcat(__FILE__,__LINE__,(d),(s),(l))
extern void _xstrlcpy(const char *filename, int lineno, char *dst, const char *src, size_t len);
# define xstrlcpy(d,s,l) _xstrlcpy(__FILE__,__LINE__,(d),(s),(l))
#else /* not DEBUG */
extern void xstrlcat(char *dst, const char *src, size_t len);
extern void xstrlcpy(char *dst, const char *src, size_t len);
#endif /* not DEBUG */
#ifdef MOUNT_TABLE_ON_FILE
extern void rewrite_mtab(mntlist *, const char *);
extern void unlock_mntlist(void);
extern void write_mntent(mntent_t *, const char *);
#endif /* MOUNT_TABLE_ON_FILE */
#if defined(HAVE_SYSLOG_H) || defined(HAVE_SYS_SYSLOG_H)
extern int syslogging;
#endif /* defined(HAVE_SYSLOG_H) || defined(HAVE_SYS_SYSLOG_H) */
extern void compute_nfs_args(void *nap, mntent_t *mntp, int genflags, struct netconfig *nfsncp, struct sockaddr_in *ip_addr, u_long nfs_version, char *nfs_proto, am_nfs_handle_t *fhp, char *host_name, char *fs_name);
extern void destroy_nfs_args(void *nap, u_long nfs_version);
extern int create_amq_service(int *udp_soAMQp, SVCXPRT **udp_amqpp, struct netconfig **udp_amqncpp, int *tcp_soAMQp, SVCXPRT **tcp_amqpp, struct netconfig **tcp_amqncpp, u_short preferred_amq_port);
extern int create_nfs_service(int *soNFSp, u_short *nfs_portp, SVCXPRT **nfs_xprtp, void (*dispatch_fxn)(struct svc_req *rqstp, SVCXPRT *transp), u_long nfs_version);
extern int amu_svc_register(SVCXPRT *, u_long, u_long, void (*)(struct svc_req *, SVCXPRT *), u_long, struct netconfig *);
#ifdef HAVE_TRANSPORT_TYPE_TLI
extern int get_knetconfig(struct knetconfig **kncpp, struct netconfig *in_ncp, char *nc_protoname);
extern struct netconfig *nfsncp;
extern void free_knetconfig(struct knetconfig *kncp);
#endif /* HAVE_TRANSPORT_TYPE_TLI */
#ifdef HAVE_FS_AUTOFS
extern int register_autofs_service(char *autofs_conftype, void (*autofs_dispatch)(struct svc_req *rqstp, SVCXPRT *xprt));
extern int unregister_autofs_service(char *autofs_conftype);
#endif /* HAVE_FS_AUTOFS */
#ifndef HAVE_STRUCT_FHSTATUS_FHS_FH
# define fhs_fh fhstatus_u.fhs_fhandle
#endif /* not HAVE_STRUCT_FHSTATUS_FHS_FH */
/*
* Network File System: the old faithful generation NFS V.2
*/
#ifndef NFS_VERSION2
# define NFS_VERSION2 ((u_int) 2)
#endif /* not NFS_VERSION2 */
/*
* Network File System: the not so new anymore generation NFS V.3
*/
#ifdef HAVE_FS_NFS3
# ifndef NFS_VERSION3
# define NFS_VERSION3 ((u_int) 3)
# endif /* not NFS_VERSION3 */
#endif /* HAVE_FS_NFS3 */
/*
* Network File System: the new generation NFS V.4
*/
#ifdef HAVE_FS_NFS4
# ifndef NFS_VERSION4
# define NFS_VERSION4 ((u_int) 4)
# endif /* not NFS_VERSION4 */
#endif /* HAVE_FS_NFS4 */
/**************************************************************************/
/*** DEBUGGING ***/
/**************************************************************************/
/*
* DEBUGGING:
*/
#ifdef DEBUG
# 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 */
# ifdef DEBUG_MEM
# define D_MEM 0x0040 /* Trace memory allocations */
# else /* not DEBUG_MEM */
# define D_MEM 0x0000 /* Dummy */
# endif /* not DEBUG_MEM */
# define D_FORK 0x0080 /* Fork server (hlfsd only) */
# define D_INFO 0x0100 /* info service specific debugging (hesiod, nis, etc) */
# define D_HRTIME 0x0200 /* Print high resolution time stamps */
# define D_XDRTRACE 0x0400 /* Trace xdr routines */
# define D_READDIR 0x0800 /* Show browsable_dir progress */
/* debug option compositions */
# define D_MASK 0x0fff /* mask of known flags */
# define D_BASIC (D_TRACE|D_FULL|D_STR|D_MEM|D_INFO|D_XDRTRACE|D_READDIR)
# define D_CONTROL (D_DAEMON|D_AMQ|D_FORK)
/* immutable flags: cannot be changed via "amq -D" */
# define D_IMMUTABLE (D_MTAB | D_CONTROL)
# define D_ALL (D_BASIC | D_CONTROL)
# define D_DEFAULT (D_MASK & D_ALL & ~D_XDRTRACE)
/* test mode: nodaemon, noamq, nofork, (local) mtab */
# define D_TEST (D_BASIC | D_MTAB)
# define amuDebug(x) (debug_flags & (x))
# define dlog if (amuDebug(D_FULL)) dplog
/* my favorite debugging tool -Erez */
#define EZKDBG plog(XLOG_INFO,"EZK:%s:%s:%d\n",__FILE__,__FUNCTION__,__LINE__)
# ifdef DEBUG_MEM
/*
* If debugging memory, then call a special freeing function that logs
* more info, and resets the pointer to NULL so it cannot be used again.
*/
# define XFREE(x) dxfree(__FILE__,__LINE__,x)
extern void dxfree(char *file, int line, voidp ptr);
extern void malloc_verify(void);
# else /* not DEBUG_MEM */
/*
* If regular debugging, then free the pointer and reset to NULL.
* This should remain so for as long as am-utils is in alpha/beta testing.
*/
# define XFREE(x) do { free((voidp)x); x = NULL;} while (0)
# endif /* not DEBUG_MEM */
/* functions that depend solely on debugging */
extern void print_nfs_args(const void *, u_long nfs_version);
extern int debug_option (char *opt);
extern void dplog(const char *fmt, ...)
__attribute__ ((__format__ (__printf__, 1, 2)));
#else /* not DEBUG */
/* set dummy flags to zero */
# define D_DAEMON 0x0001 /* Enter daemon mode */
# define D_TRACE 0x0000 /* dummy: Do protocol trace */
# define D_FULL 0x0000 /* dummy: Do full trace */
# define D_MTAB 0x0000 /* dummy: Use local mtab */
# define D_AMQ 0x0010 /* Register amq program */
# define D_STR 0x0000 /* dummy: Debug string munging */
# define D_MEM 0x0000 /* dummy: Trace memory allocations */
# define D_FORK 0x0080 /* Fork server (hlfsd only) */
# define D_INFO 0x0000 /* dummy: info service debugging */
# define D_HRTIME 0x0000 /* dummy: hi-res time stamps */
# define D_XDRTRACE 0x0000 /* dummy: Trace xdr routines */
# define D_READDIR 0x0000 /* dummy: browsable_dir progress */
# define D_CONTROL (D_DAEMON|D_AMQ|D_FORK)
# define amuDebug(x) (debug_flags & (x))
/*
* If not debugging, then also reset the pointer.
* It's safer -- and besides, free() should do that anyway.
*/
# define XFREE(x) do { free((voidp)x); x = NULL;} while (0)
# if defined(HAVE_GCC_VARARGS_MACROS)
# define dlog(fmt...)
# elif defined(HAVE_C99_VARARGS_MACROS)
# define dlog(...)
# else /* no c99 varargs */
/* this define means that we CCP leaves code behind the (list,of,args) */
# define dlog
# endif /* no c99 varargs */
# define print_nfs_args(nap, nfs_version)
# define debug_option(x) (1)
#endif /* not DEBUG */
extern u_int debug_flags; /* Debug options */
extern struct opt_tab dbg_opt[];
/**************************************************************************/
/*** MISC (stuff left to autoconfiscate) ***/
/**************************************************************************/
#endif /* not _AM_UTILS_H */
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