498 lines
17 KiB
C
498 lines
17 KiB
C
/*
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* Copyright (c) 1997-2006 Erez Zadok
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* Copyright (c) 1990 Jan-Simon Pendry
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* File: am-utils/include/am_utils.h
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*
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*/
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/*
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* Definitions that are specific to the am-utils package.
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*/
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#ifndef _AM_UTILS_H
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#define _AM_UTILS_H
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#include "aux_conf.h"
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/**************************************************************************/
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/*** MACROS ***/
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/**************************************************************************/
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/*
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* General macros.
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*/
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#ifndef FALSE
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# define FALSE 0
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#endif /* not FALSE */
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#ifndef TRUE
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# define TRUE 1
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#endif /* not TRUE */
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#ifndef MAX
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# define MAX(a, b) ((a) > (b) ? (a) : (b))
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#endif /* not MAX */
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#ifndef MIN
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# define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif /* not MIN */
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#define ONE_HOUR (60 * 60) /* One hour in seconds */
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#ifndef MAXHOSTNAMELEN
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# ifdef HOSTNAMESZ
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# define MAXHOSTNAMELEN HOSTNAMESZ
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# else /* not HOSTNAMESZ */
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# define MAXHOSTNAMELEN 256
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# endif /* not HOSTNAMESZ */
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#endif /* not MAXHOSTNAMELEN */
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/*
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* for hlfsd, and amd for detecting uid/gid
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*/
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#ifndef INVALIDID
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/* this is also defined in include/am_utils.h */
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# define INVALIDID (((unsigned short) ~0) - 3)
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#endif /* not INVALIDID */
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/*
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* String comparison macros
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*/
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#define STREQ(s1, s2) (strcmp((s1), (s2)) == 0)
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#define STRCEQ(s1, s2) (strcasecmp((s1), (s2)) == 0)
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#define NSTREQ(s1, s2, n) (strncmp((s1), (s2), (n)) == 0)
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#define NSTRCEQ(s1, s2, n) (strncasecmp((s1), (s2), (n)) == 0)
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#define FSTREQ(s1, s2) ((*(s1) == *(s2)) && STREQ((s1),(s2)))
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/*
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* Logging options/flags
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*/
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#define XLOG_FATAL 0x0001
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#define XLOG_ERROR 0x0002
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#define XLOG_USER 0x0004
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#define XLOG_WARNING 0x0008
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#define XLOG_INFO 0x0010
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#define XLOG_DEBUG 0x0020
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#define XLOG_MAP 0x0040
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#define XLOG_STATS 0x0080
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#define XLOG_DEFSTR "all,nomap,nostats" /* Default log options */
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#define XLOG_ALL (XLOG_FATAL|XLOG_ERROR|XLOG_USER|XLOG_WARNING|XLOG_INFO|XLOG_MAP|XLOG_STATS)
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#define NO_SUBNET "notknown" /* default subnet name for no subnet */
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#define NEXP_AP (1022) /* gdmr: was 254 */
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#define NEXP_AP_MARGIN (128) /* ???? not used */
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/*
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* Linked list macros
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*/
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#define AM_FIRST(ty, q) ((ty *) ((q)->q_forw))
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#define AM_LAST(ty, q) ((ty *) ((q)->q_back))
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#define NEXT(ty, q) ((ty *) (((qelem *) q)->q_forw))
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#define PREV(ty, q) ((ty *) (((qelem *) q)->q_back))
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#define HEAD(ty, q) ((ty *) q)
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#define ITER(v, ty, q) \
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for ((v) = AM_FIRST(ty,(q)); (v) != HEAD(ty,(q)); (v) = NEXT(ty,(v)))
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/* allocate anything of type ty */
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#define ALLOC(ty) ((ty *) xmalloc(sizeof(ty)))
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#define CALLOC(ty) ((ty *) xzalloc(sizeof(ty)))
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/* simply allocate b bytes */
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#define SALLOC(b) xmalloc((b))
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/*
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* Systems which have the mount table in a file need to read it before
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* they can perform an unmount() system call.
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*/
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#define UMOUNT_FS(dir, mtb_name, unmount_flags) umount_fs(dir, mtb_name, unmount_flags)
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/* next two are imported via $srcdir/conf/umount/umount_*.c */
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extern int umount_fs(char *mntdir, const char *mnttabname, u_int unmount_flags);
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#ifdef MNT2_GEN_OPT_FORCE
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extern int umount2_fs(const char *mntdir, u_int unmount_flags);
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#endif /* MNT2_GEN_OPT_FORCE */
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/* unmount-related flags (special handling of autofs, forced/lazy, etc.) */
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#define AMU_UMOUNT_FORCE 0x1
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#define AMU_UMOUNT_DETACH 0x2
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#define AMU_UMOUNT_AUTOFS 0x4
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/*
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* The following values can be tuned...
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*/
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#define ALLOWED_MOUNT_TIME 40 /* 40s for a mount */
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/*
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* RPC-related macros.
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*/
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#define RPC_XID_PORTMAP 0
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#define RPC_XID_MOUNTD 1
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#define RPC_XID_NFSPING 2
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#define RPC_XID_WEBNFS 3
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#define RPC_XID_MASK (0x0f) /* 16 id's for now */
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#define MK_RPC_XID(type_id, uniq) ((type_id) | ((uniq) << 4))
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/*
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* What level of AMD are we backward compatible with?
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* This only applies to externally visible characteristics.
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* Rev.Minor.Branch.Patch (2 digits each)
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*/
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#define AMD_COMPAT 5000000 /* 5.0 */
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/**************************************************************************/
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/*** STRUCTURES AND TYPEDEFS ***/
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/**************************************************************************/
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/* some typedefs must come first */
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typedef char *amq_string;
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typedef struct _qelem qelem;
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typedef struct mntlist mntlist;
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/*
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* Linked list
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* (the name 'struct qelem' conflicts with linux's unistd.h)
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*/
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struct _qelem {
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qelem *q_forw;
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qelem *q_back;
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};
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/*
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* Option tables
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*/
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struct opt_tab {
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char *opt;
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int flag;
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};
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/*
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* Server states
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*/
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typedef enum {
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Start,
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Run,
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Finishing,
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Quit,
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Done
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} serv_state;
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/*
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* List of mount table entries
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*/
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struct mntlist {
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struct mntlist *mnext;
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mntent_t *mnt;
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};
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/*
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* Mount map
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*/
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typedef struct mnt_map mnt_map;
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/**************************************************************************/
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/*** EXTERNALS ***/
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/**************************************************************************/
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/*
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* Useful constants
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*/
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extern char *mnttab_file_name; /* Mount table */
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extern char *cpu; /* "CPU type" */
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extern char *endian; /* "big" */
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extern char *hostdomain; /* "southseas.nz" */
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extern char copyright[]; /* Copyright info */
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extern char version[]; /* Version info */
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/*
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* Global variables.
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*/
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extern AUTH *nfs_auth; /* Dummy authorization for remote servers */
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extern FILE *logfp; /* Log file */
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extern SVCXPRT *nfsxprt;
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extern char *PrimNetName; /* Name of primary connected network */
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extern char *PrimNetNum; /* Name of primary connected network */
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extern char *SubsNetName; /* Name of subsidiary connected network */
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extern char *SubsNetNum; /* Name of subsidiary connected network */
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extern void am_set_progname(char *pn); /* "amd" */
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extern const char *am_get_progname(void); /* "amd" */
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extern void am_set_hostname(char *hn);
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extern const char *am_get_hostname(void);
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extern pid_t am_set_mypid(void);
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extern pid_t am_mypid;
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extern int foreground; /* Foreground process */
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extern int orig_umask; /* umask() on startup */
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extern int xlog_level; /* Logging level */
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extern int xlog_level_init;
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extern serv_state amd_state; /* Should we go now */
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extern struct in_addr myipaddr; /* (An) IP address of this host */
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extern struct opt_tab xlog_opt[];
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extern u_short nfs_port; /* Our NFS service port */
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/*
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* Global routines
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*/
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extern CLIENT *get_mount_client(char *unused_host, struct sockaddr_in *sin, struct timeval *tv, int *sock, u_long mnt_version);
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extern RETSIGTYPE sigchld(int);
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extern bool_t xdr_amq_string(XDR *xdrs, amq_string *objp);
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extern bool_t xdr_dirpath(XDR *xdrs, dirpath *objp);
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extern char **strsplit(char *, int, int);
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extern char *expand_selectors(char *);
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extern char *get_version_string(void);
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extern char *inet_dquad(char *, size_t, u_long);
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extern char *print_wires(void);
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extern char *str3cat(char *, char *, char *, char *);
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extern char *strealloc(char *, char *);
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extern char *strip_selectors(char *, char *);
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extern char *strnsave(const char *, int);
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extern int amu_close(int fd);
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extern int bind_resv_port(int, u_short *);
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extern int cmdoption(char *, struct opt_tab *, int *);
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extern int compute_automounter_mount_flags(mntent_t *);
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extern int compute_mount_flags(mntent_t *);
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extern int get_amd_program_number(void);
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extern int getcreds(struct svc_req *, uid_t *, gid_t *, SVCXPRT *);
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extern int hasmntval(mntent_t *, char *);
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extern unsigned int hasmntvalerr(mntent_t *, char *, int *);
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extern char *hasmntstr(mntent_t *, char *);
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extern char *hasmnteq(mntent_t *, char *);
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extern char *haseq(char *);
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extern int is_network_member(const char *net);
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extern int is_interface_local(u_long);
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extern int islocalnet(u_long);
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extern int make_rpc_packet(char *, int, u_long, struct rpc_msg *, voidp, XDRPROC_T_TYPE, AUTH *);
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extern int mkdirs(char *, int);
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extern int mount_fs(mntent_t *, int, caddr_t, int, MTYPE_TYPE, u_long, const char *, const char *, int);
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extern void nfs_program_2(struct svc_req *rqstp, SVCXPRT *transp);
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extern int pickup_rpc_reply(voidp, int, voidp, XDRPROC_T_TYPE);
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extern int switch_option(char *);
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extern int switch_to_logfile(char *logfile, int orig_umask, int truncate_log);
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extern mntlist *read_mtab(char *, const char *);
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#ifndef HAVE_TRANSPORT_TYPE_TLI
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extern struct sockaddr_in *amu_svc_getcaller(SVCXPRT *xprt);
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#endif /* not HAVE_TRANSPORT_TYPE_TLI */
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extern time_t time(time_t *);
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extern void amu_get_myaddress(struct in_addr *iap, const char *preferred_localhost);
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extern void amu_release_controlling_tty(void);
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extern void compute_automounter_nfs_args(nfs_args_t *nap, mntent_t *mntp);
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extern void discard_mntlist(mntlist *mp);
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extern void free_mntlist(mntlist *);
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extern void getwire(char **name1, char **number1);
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extern void going_down(int);
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extern void mnt_free(mntent_t *);
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extern void plog(int, const char *,...)
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__attribute__ ((__format__ (__printf__, 2, 3)));
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extern void rmdirs(char *);
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extern void rpc_msg_init(struct rpc_msg *, u_long, u_long, u_long);
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extern void set_amd_program_number(int program);
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extern void show_opts(int ch, struct opt_tab *);
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extern void unregister_amq(void);
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extern voidp xmalloc(int);
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extern voidp xrealloc(voidp, int);
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extern voidp xzalloc(int);
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extern int check_pmap_up(char *host, struct sockaddr_in* sin);
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extern u_long get_nfs_version(char *host, struct sockaddr_in *sin, u_long nfs_version, const char *proto);
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extern long get_server_pid(void);
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extern void setup_sighandler(int signum, void (*handler)(int));
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extern time_t clocktime(nfstime *nt);
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#if defined(DEBUG) && (defined(HAVE_C99_VARARGS_MACROS) || defined(HAVE_GCC_VARARGS_MACROS))
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# ifdef HAVE_C99_VARARGS_MACROS
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#define xsnprintf(str,size,fmt,...) _xsnprintf(__FILE__,__LINE__,(str),(size),(fmt),__VA_ARGS__)
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# endif /* HAVE_C99_VARARGS_MACROS */
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# ifdef HAVE_GCC_VARARGS_MACROS
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#define xsnprintf(str,size,fmt,args...) _xsnprintf(__FILE__,__LINE__,(str),(size),(fmt),args)
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# endif /* HAVE_GCC_VARARGS_MACROS */
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extern int _xsnprintf(const char *filename, int lineno, char *str, size_t size, const char *format, ...);
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#define xvsnprintf(str,size,fmt,ap) _xvsnprintf(__FILE__,__LINE__,(str),(size),(fmt),(ap))
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extern int _xvsnprintf(const char *filename, int lineno, char *str, size_t size, const char *format, va_list ap);
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#else /* not DEBUG or no C99/GCC-style vararg cpp macros supported */
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extern int xsnprintf(char *str, size_t size, const char *format, ...);
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extern int xvsnprintf(char *str, size_t size, const char *format, va_list ap);
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#endif /* not DEBUG or no C99/GCC-style vararg cpp macros supported */
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#ifdef DEBUG
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extern void _xstrlcat(const char *filename, int lineno, char *dst, const char *src, size_t len);
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# define xstrlcat(d,s,l) _xstrlcat(__FILE__,__LINE__,(d),(s),(l))
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extern void _xstrlcpy(const char *filename, int lineno, char *dst, const char *src, size_t len);
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# define xstrlcpy(d,s,l) _xstrlcpy(__FILE__,__LINE__,(d),(s),(l))
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#else /* not DEBUG */
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extern void xstrlcat(char *dst, const char *src, size_t len);
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extern void xstrlcpy(char *dst, const char *src, size_t len);
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#endif /* not DEBUG */
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#ifdef MOUNT_TABLE_ON_FILE
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extern void rewrite_mtab(mntlist *, const char *);
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extern void unlock_mntlist(void);
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extern void write_mntent(mntent_t *, const char *);
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#endif /* MOUNT_TABLE_ON_FILE */
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#if defined(HAVE_SYSLOG_H) || defined(HAVE_SYS_SYSLOG_H)
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extern int syslogging;
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#endif /* defined(HAVE_SYSLOG_H) || defined(HAVE_SYS_SYSLOG_H) */
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extern void compute_nfs_args(nfs_args_t *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);
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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);
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extern int create_nfs_service(int *soNFSp, u_short *nfs_portp, SVCXPRT **nfs_xprtp, void (*dispatch_fxn)(struct svc_req *rqstp, SVCXPRT *transp));
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extern int amu_svc_register(SVCXPRT *, u_long, u_long, void (*)(struct svc_req *, SVCXPRT *), u_long, struct netconfig *);
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#ifdef HAVE_TRANSPORT_TYPE_TLI
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extern int get_knetconfig(struct knetconfig **kncpp, struct netconfig *in_ncp, char *nc_protoname);
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extern struct netconfig *nfsncp;
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extern void free_knetconfig(struct knetconfig *kncp);
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#endif /* HAVE_TRANSPORT_TYPE_TLI */
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#ifdef HAVE_FS_AUTOFS
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extern int register_autofs_service(char *autofs_conftype, void (*autofs_dispatch)(struct svc_req *rqstp, SVCXPRT *xprt));
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extern int unregister_autofs_service(char *autofs_conftype);
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#endif /* HAVE_FS_AUTOFS */
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#ifndef HAVE_STRUCT_FHSTATUS_FHS_FH
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# define fhs_fh fhstatus_u.fhs_fhandle
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#endif /* not HAVE_STRUCT_FHSTATUS_FHS_FH */
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/*
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* Network File System: the new generation
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* NFS V.3
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*/
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#ifdef HAVE_FS_NFS3
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# ifndef NFS_VERSION3
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# define NFS_VERSION3 ((u_int) 3)
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# endif /* not NFS_VERSION3 */
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#endif /* HAVE_FS_NFS3 */
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/**************************************************************************/
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/*** DEBUGGING ***/
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/**************************************************************************/
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/*
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* DEBUGGING:
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*/
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#ifdef DEBUG
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# define D_ALL (~(D_MTAB|D_HRTIME|D_XDRTRACE|D_DAEMON|D_FORK|D_AMQ))
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# define D_DAEMON 0x0001 /* Don't enter daemon mode */
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# define D_TRACE 0x0002 /* Do protocol trace */
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# define D_FULL 0x0004 /* Do full trace */
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# define D_MTAB 0x0008 /* Use local mtab */
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# define D_AMQ 0x0010 /* Don't register amq program */
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# define D_STR 0x0020 /* Debug string munging */
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# ifdef DEBUG_MEM
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# define D_MEM 0x0040 /* Trace memory allocations */
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# else /* not DEBUG_MEM */
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# define D_MEM 0x0000 /* Dummy */
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# endif /* not DEBUG_MEM */
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# define D_FORK 0x0080 /* Don't fork server */
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/* info service specific debugging (hesiod, nis, etc) */
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# define D_INFO 0x0100
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# define D_HRTIME 0x0200 /* Print high resolution time stamps */
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# define D_XDRTRACE 0x0400 /* Trace xdr routines */
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# define D_READDIR 0x0800 /* Show browsable_dir progress */
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/*
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* Test mode is test mode: don't daemonize, don't register amq, don't fork,
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* don't touch system mtab, etc.
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*/
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# define D_TEST (~(D_MEM|D_STR|D_XDRTRACE))
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# define amuDebug(x) (debug_flags & (x))
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# define dlog if (amuDebug(D_FULL)) dplog
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/* my favorite debugging tool -Erez */
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#define EZKDBG plog(XLOG_INFO,"EZK:%s:%s:%d\n",__FILE__,__FUNCTION__,__LINE__)
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# ifdef DEBUG_MEM
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/*
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|
* If debugging memory, then call a special freeing function that logs
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* more info, and resets the pointer to NULL so it cannot be used again.
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*/
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# define XFREE(x) dxfree(__FILE__,__LINE__,x)
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extern void dxfree(char *file, int line, voidp ptr);
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extern void malloc_verify(void);
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# else /* not DEBUG_MEM */
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/*
|
|
* 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.
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|
*/
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# define XFREE(x) do { free((voidp)x); x = NULL;} while (0)
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# endif /* not DEBUG_MEM */
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|
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/* functions that depend solely on debugging */
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|
extern void print_nfs_args(const nfs_args_t *nap, u_long nfs_version);
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extern int debug_option (char *opt);
|
|
extern void dplog(const char *fmt, ...)
|
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__attribute__ ((__format__ (__printf__, 1, 2)));
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|
|
#else /* not DEBUG */
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|
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/*
|
|
* 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)
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|
|
#define amuDebug(x) (0)
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|
|
#ifdef __GNUC__
|
|
#define dlog(fmt...)
|
|
#else /* not __GNUC__ */
|
|
/* this define means that we CCP leaves code behind the (list,of,args) */
|
|
#define dlog
|
|
#endif /* not __GNUC__ */
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|
|
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#define print_nfs_args(nap, nfs_version)
|
|
#define debug_option(x) (1)
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|
|
#endif /* not DEBUG */
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|
|
|
extern int debug_flags; /* Debug options */
|
|
extern struct opt_tab dbg_opt[];
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|
|
|
/**************************************************************************/
|
|
/*** MISC (stuff left to autoconfiscate) ***/
|
|
/**************************************************************************/
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|
|
|
#endif /* not _AM_UTILS_H */
|