3961 lines
96 KiB
C
3961 lines
96 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. 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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* Herb Hasler and Rick Macklem at The University of Guelph.
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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. 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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /*not lint*/
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95";
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#endif /*not lint*/
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/fcntl.h>
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#include <sys/fnv_hash.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <sys/mount.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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#include <rpc/rpc.h>
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#include <rpc/rpc_com.h>
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#include <rpc/pmap_clnt.h>
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#include <rpc/pmap_prot.h>
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#include <rpcsvc/mount.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfssvc.h>
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#include <nfsserver/nfs.h>
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#include <fs/nfs/nfsport.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <grp.h>
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#include <libutil.h>
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#include <limits.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "pathnames.h"
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#include "mntopts.h"
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#ifdef DEBUG
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#include <stdarg.h>
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#endif
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/*
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* Structures for keeping the mount list and export list
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*/
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struct mountlist {
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char ml_host[MNTNAMLEN+1];
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char ml_dirp[MNTPATHLEN+1];
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SLIST_ENTRY(mountlist) next;
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};
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struct dirlist {
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struct dirlist *dp_left;
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struct dirlist *dp_right;
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int dp_flag;
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struct hostlist *dp_hosts; /* List of hosts this dir exported to */
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char *dp_dirp;
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};
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/* dp_flag bits */
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#define DP_DEFSET 0x1
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#define DP_HOSTSET 0x2
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/*
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* maproot/mapall credentials.
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* cr_smallgrps can be used for a group list up to SMALLNGROUPS in size.
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* Larger group lists are malloc'd/free'd.
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*/
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#define SMALLNGROUPS 32
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struct expcred {
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uid_t cr_uid;
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int cr_ngroups;
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gid_t cr_smallgrps[SMALLNGROUPS];
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gid_t *cr_groups;
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};
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struct exportlist {
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struct dirlist *ex_dirl;
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struct dirlist *ex_defdir;
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struct grouplist *ex_grphead;
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int ex_flag;
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fsid_t ex_fs;
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char *ex_fsdir;
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char *ex_indexfile;
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struct expcred ex_defanon;
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uint64_t ex_defexflags;
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int ex_numsecflavors;
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int ex_secflavors[MAXSECFLAVORS];
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int ex_defnumsecflavors;
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int ex_defsecflavors[MAXSECFLAVORS];
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SLIST_ENTRY(exportlist) entries;
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};
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/* ex_flag bits */
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#define EX_LINKED 0x1
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#define EX_DONE 0x2
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#define EX_DEFSET 0x4
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#define EX_PUBLICFH 0x8
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SLIST_HEAD(exportlisthead, exportlist);
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struct netmsk {
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struct sockaddr_storage nt_net;
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struct sockaddr_storage nt_mask;
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char *nt_name;
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};
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union grouptypes {
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struct addrinfo *gt_addrinfo;
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struct netmsk gt_net;
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};
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struct grouplist {
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int gr_type;
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union grouptypes gr_ptr;
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struct grouplist *gr_next;
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struct expcred gr_anon;
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uint64_t gr_exflags;
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int gr_flag;
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int gr_numsecflavors;
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int gr_secflavors[MAXSECFLAVORS];
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};
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/* Group types */
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#define GT_NULL 0x0
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#define GT_HOST 0x1
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#define GT_NET 0x2
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#define GT_DEFAULT 0x3
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#define GT_IGNORE 0x5
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/* Group flags */
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#define GR_FND 0x1
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struct hostlist {
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int ht_flag; /* Uses DP_xx bits */
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struct grouplist *ht_grp;
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struct hostlist *ht_next;
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};
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struct fhreturn {
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int fhr_flag;
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int fhr_vers;
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nfsfh_t fhr_fh;
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int fhr_numsecflavors;
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int *fhr_secflavors;
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};
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#define GETPORT_MAXTRY 20 /* Max tries to get a port # */
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/*
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* How long to delay a reload of exports when there are RPC request(s)
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* to process, in usec. Must be less than 1second.
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*/
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#define RELOADDELAY 250000
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/* Global defs */
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static char *add_expdir(struct dirlist **, char *, int);
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static void add_dlist(struct dirlist **, struct dirlist *,
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struct grouplist *, int, struct exportlist *,
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struct expcred *, uint64_t);
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static void add_mlist(char *, char *);
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static int check_dirpath(char *);
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static int check_options(struct dirlist *);
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static int checkmask(struct sockaddr *sa);
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static int chk_host(struct dirlist *, struct sockaddr *, int *, int *,
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int *, int **);
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static char *strsep_quote(char **stringp, const char *delim);
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static int create_service(struct netconfig *nconf);
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static void complete_service(struct netconfig *nconf, char *port_str);
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static void clearout_service(void);
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static void del_mlist(char *hostp, char *dirp);
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static struct dirlist *dirp_search(struct dirlist *, char *);
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static int do_export_mount(struct exportlist *, struct statfs *);
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static int do_mount(struct exportlist *, struct grouplist *, uint64_t,
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struct expcred *, char *, int, struct statfs *, int, int *);
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static int do_opt(char **, char **, struct exportlist *,
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struct grouplist *, int *, uint64_t *, struct expcred *);
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static struct exportlist *ex_search(fsid_t *, struct exportlisthead *);
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static struct exportlist *get_exp(void);
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static void free_dir(struct dirlist *);
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static void free_exp(struct exportlist *);
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static void free_grp(struct grouplist *);
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static void free_host(struct hostlist *);
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static void free_v4rootexp(void);
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static void get_exportlist_one(int);
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static void get_exportlist(int);
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static void insert_exports(struct exportlist *, struct exportlisthead *);
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static void free_exports(struct exportlisthead *);
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static void read_exportfile(int);
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static int compare_nmount_exportlist(struct iovec *, int, char *);
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static int compare_export(struct exportlist *, struct exportlist *);
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static int compare_cred(struct expcred *, struct expcred *);
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static int compare_secflavor(int *, int *, int);
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static void delete_export(struct iovec *, int, struct statfs *, char *);
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static int get_host(char *, struct grouplist *, struct grouplist *);
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static struct hostlist *get_ht(void);
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static int get_line(void);
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static void get_mountlist(void);
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static int get_net(char *, struct netmsk *, int);
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static void getexp_err(struct exportlist *, struct grouplist *, const char *);
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static struct grouplist *get_grp(void);
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static void hang_dirp(struct dirlist *, struct grouplist *,
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struct exportlist *, int, struct expcred *, uint64_t);
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static void huphandler(int sig);
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static int makemask(struct sockaddr_storage *ssp, int bitlen);
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static void mntsrv(struct svc_req *, SVCXPRT *);
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static void nextfield(char **, char **);
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static void out_of_mem(void);
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static void parsecred(char *, struct expcred *);
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static int parsesec(char *, struct exportlist *);
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static int put_exlist(struct dirlist *, XDR *, struct dirlist *,
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int *, int);
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static void *sa_rawaddr(struct sockaddr *sa, int *nbytes);
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static int sacmp(struct sockaddr *sa1, struct sockaddr *sa2,
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struct sockaddr *samask);
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static int scan_tree(struct dirlist *, struct sockaddr *);
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static void usage(void);
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static int xdr_dir(XDR *, char *);
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static int xdr_explist(XDR *, caddr_t);
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static int xdr_explist_brief(XDR *, caddr_t);
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static int xdr_explist_common(XDR *, caddr_t, int);
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static int xdr_fhs(XDR *, caddr_t);
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static int xdr_mlist(XDR *, caddr_t);
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static void terminate(int);
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static void cp_cred(struct expcred *, struct expcred *);
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#define EXPHASH(f) (fnv_32_buf((f), sizeof(fsid_t), 0) % exphashsize)
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static struct exportlisthead *exphead = NULL;
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static struct exportlisthead *oldexphead = NULL;
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static int exphashsize = 0;
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static SLIST_HEAD(, mountlist) mlhead = SLIST_HEAD_INITIALIZER(&mlhead);
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static char *exnames_default[2] = { _PATH_EXPORTS, NULL };
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static char **exnames;
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static char **hosts = NULL;
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static int force_v2 = 0;
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static int resvport_only = 1;
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static int nhosts = 0;
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static int dir_only = 1;
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static int dolog = 0;
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static int got_sighup = 0;
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static int xcreated = 0;
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static char *svcport_str = NULL;
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static int mallocd_svcport = 0;
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static int *sock_fd;
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static int sock_fdcnt;
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static int sock_fdpos;
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static int suspend_nfsd = 0;
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static int opt_flags;
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static int have_v6 = 1;
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static int v4root_phase = 0;
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static char v4root_dirpath[PATH_MAX + 1];
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static struct exportlist *v4root_ep = NULL;
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static int has_publicfh = 0;
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static int has_set_publicfh = 0;
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static struct pidfh *pfh = NULL;
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/* Bits for opt_flags above */
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#define OP_MAPROOT 0x01
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#define OP_MAPALL 0x02
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/* 0x4 free */
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#define OP_MASK 0x08
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#define OP_NET 0x10
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#define OP_ALLDIRS 0x40
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#define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */
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#define OP_QUIET 0x100
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#define OP_MASKLEN 0x200
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#define OP_SEC 0x400
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#ifdef DEBUG
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static int debug = 1;
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static void SYSLOG(int, const char *, ...) __printflike(2, 3);
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#define syslog SYSLOG
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#else
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static int debug = 0;
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#endif
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/*
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* The LOGDEBUG() syslog() calls are always compiled into the daemon.
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* To enable them, create a file at _PATH_MOUNTDDEBUG. This file can be empty.
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* To disable the logging, just delete the file at _PATH_MOUNTDDEBUG.
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*/
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static int logdebug = 0;
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#define LOGDEBUG(format, ...) \
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(logdebug ? syslog(LOG_DEBUG, format, ## __VA_ARGS__) : 0)
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/*
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* Similar to strsep(), but it allows for quoted strings
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* and escaped characters.
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*
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* It returns the string (or NULL, if *stringp is NULL),
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* which is a de-quoted version of the string if necessary.
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*
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* It modifies *stringp in place.
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*/
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static char *
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strsep_quote(char **stringp, const char *delim)
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{
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char *srcptr, *dstptr, *retval;
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char quot = 0;
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if (stringp == NULL || *stringp == NULL)
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return (NULL);
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srcptr = dstptr = retval = *stringp;
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while (*srcptr) {
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/*
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* We're looking for several edge cases here.
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* First: if we're in quote state (quot != 0),
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* then we ignore the delim characters, but otherwise
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* process as normal, unless it is the quote character.
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* Second: if the current character is a backslash,
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* we take the next character as-is, without checking
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* for delim, quote, or backslash. Exception: if the
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* next character is a NUL, that's the end of the string.
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* Third: if the character is a quote character, we toggle
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* quote state.
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* Otherwise: check the current character for NUL, or
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* being in delim, and end the string if either is true.
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*/
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if (*srcptr == '\\') {
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srcptr++;
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/*
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* The edge case here is if the next character
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* is NUL, we want to stop processing. But if
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* it's not NUL, then we simply want to copy it.
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*/
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if (*srcptr) {
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*dstptr++ = *srcptr++;
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}
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continue;
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}
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if (quot == 0 && (*srcptr == '\'' || *srcptr == '"')) {
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quot = *srcptr++;
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continue;
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}
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if (quot && *srcptr == quot) {
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/* End of the quoted part */
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quot = 0;
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srcptr++;
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continue;
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}
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if (!quot && strchr(delim, *srcptr))
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break;
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*dstptr++ = *srcptr++;
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}
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*stringp = (*srcptr == '\0') ? NULL : srcptr + 1;
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*dstptr = 0; /* Terminate the string */
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return (retval);
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}
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/*
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* Mountd server for NFS mount protocol as described in:
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* NFS: Network File System Protocol Specification, RFC1094, Appendix A
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* The optional arguments are the exports file name
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* default: _PATH_EXPORTS
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* and "-n" to allow nonroot mount.
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*/
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int
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main(int argc, char **argv)
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{
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fd_set readfds;
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struct netconfig *nconf;
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char *endptr, **hosts_bak;
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void *nc_handle;
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pid_t otherpid;
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in_port_t svcport;
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int c, k, s;
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int maxrec = RPC_MAXDATASIZE;
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int attempt_cnt, port_len, port_pos, ret;
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char **port_list;
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uint64_t curtime, nexttime;
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struct timeval tv;
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struct timespec tp;
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sigset_t sig_mask, sighup_mask;
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int enable_rpcbind;
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enable_rpcbind = 1;
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/* Check that another mountd isn't already running. */
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pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid);
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if (pfh == NULL) {
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if (errno == EEXIST)
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errx(1, "mountd already running, pid: %d.", otherpid);
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warn("cannot open or create pidfile");
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}
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s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
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if (s < 0)
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have_v6 = 0;
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else
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close(s);
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while ((c = getopt(argc, argv, "2deh:lnp:RrS")) != -1)
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switch (c) {
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case '2':
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force_v2 = 1;
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break;
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case 'e':
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/* now a no-op, since this is the default */
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break;
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case 'n':
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resvport_only = 0;
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break;
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case 'R':
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/* Do not support Mount protocol */
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enable_rpcbind = 0;
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break;
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case 'r':
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dir_only = 0;
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break;
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case 'd':
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debug = debug ? 0 : 1;
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break;
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case 'l':
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dolog = 1;
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break;
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case 'p':
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endptr = NULL;
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svcport = (in_port_t)strtoul(optarg, &endptr, 10);
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if (endptr == NULL || *endptr != '\0' ||
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svcport == 0 || svcport >= IPPORT_MAX)
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usage();
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svcport_str = strdup(optarg);
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break;
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case 'h':
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++nhosts;
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hosts_bak = hosts;
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hosts_bak = realloc(hosts, nhosts * sizeof(char *));
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if (hosts_bak == NULL) {
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if (hosts != NULL) {
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for (k = 0; k < nhosts; k++)
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free(hosts[k]);
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free(hosts);
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out_of_mem();
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}
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}
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hosts = hosts_bak;
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hosts[nhosts - 1] = strdup(optarg);
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if (hosts[nhosts - 1] == NULL) {
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for (k = 0; k < (nhosts - 1); k++)
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free(hosts[k]);
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free(hosts);
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out_of_mem();
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}
|
|
break;
|
|
case 'S':
|
|
suspend_nfsd = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
if (enable_rpcbind == 0) {
|
|
if (svcport_str != NULL) {
|
|
warnx("-p option not compatible with -R, ignored");
|
|
free(svcport_str);
|
|
svcport_str = NULL;
|
|
}
|
|
if (nhosts > 0) {
|
|
warnx("-h option not compatible with -R, ignored");
|
|
for (k = 0; k < nhosts; k++)
|
|
free(hosts[k]);
|
|
free(hosts);
|
|
hosts = NULL;
|
|
nhosts = 0;
|
|
}
|
|
}
|
|
|
|
if (modfind("nfsd") < 0) {
|
|
/* Not present in kernel, try loading it */
|
|
if (kldload("nfsd") < 0 || modfind("nfsd") < 0)
|
|
errx(1, "NFS server is not available");
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc > 0)
|
|
exnames = argv;
|
|
else
|
|
exnames = exnames_default;
|
|
openlog("mountd", LOG_PID, LOG_DAEMON);
|
|
if (debug)
|
|
warnx("getting export list");
|
|
get_exportlist(0);
|
|
if (debug)
|
|
warnx("getting mount list");
|
|
get_mountlist();
|
|
if (debug)
|
|
warnx("here we go");
|
|
if (debug == 0) {
|
|
daemon(0, 0);
|
|
signal(SIGINT, SIG_IGN);
|
|
signal(SIGQUIT, SIG_IGN);
|
|
}
|
|
signal(SIGHUP, huphandler);
|
|
signal(SIGTERM, terminate);
|
|
signal(SIGPIPE, SIG_IGN);
|
|
|
|
pidfile_write(pfh);
|
|
|
|
if (enable_rpcbind != 0) {
|
|
rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
|
|
rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
|
|
rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
|
|
|
|
if (!resvport_only) {
|
|
if (sysctlbyname("vfs.nfsd.nfs_privport", NULL, NULL,
|
|
&resvport_only, sizeof(resvport_only)) != 0 &&
|
|
errno != ENOENT) {
|
|
syslog(LOG_ERR, "sysctl: %m");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If no hosts were specified, add a wildcard entry to bind to
|
|
* INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added
|
|
* to the list.
|
|
*/
|
|
if (nhosts == 0) {
|
|
hosts = malloc(sizeof(char *));
|
|
if (hosts == NULL)
|
|
out_of_mem();
|
|
hosts[0] = "*";
|
|
nhosts = 1;
|
|
} else {
|
|
hosts_bak = hosts;
|
|
if (have_v6) {
|
|
hosts_bak = realloc(hosts, (nhosts + 2) *
|
|
sizeof(char *));
|
|
if (hosts_bak == NULL) {
|
|
for (k = 0; k < nhosts; k++)
|
|
free(hosts[k]);
|
|
free(hosts);
|
|
out_of_mem();
|
|
} else
|
|
hosts = hosts_bak;
|
|
nhosts += 2;
|
|
hosts[nhosts - 2] = "::1";
|
|
} else {
|
|
hosts_bak = realloc(hosts, (nhosts + 1) *
|
|
sizeof(char *));
|
|
if (hosts_bak == NULL) {
|
|
for (k = 0; k < nhosts; k++)
|
|
free(hosts[k]);
|
|
free(hosts);
|
|
out_of_mem();
|
|
} else {
|
|
nhosts += 1;
|
|
hosts = hosts_bak;
|
|
}
|
|
}
|
|
|
|
hosts[nhosts - 1] = "127.0.0.1";
|
|
}
|
|
}
|
|
|
|
attempt_cnt = 1;
|
|
sock_fdcnt = 0;
|
|
sock_fd = NULL;
|
|
port_list = NULL;
|
|
port_len = 0;
|
|
if (enable_rpcbind != 0) {
|
|
nc_handle = setnetconfig();
|
|
while ((nconf = getnetconfig(nc_handle))) {
|
|
if (nconf->nc_flag & NC_VISIBLE) {
|
|
if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
|
|
"inet6") == 0) {
|
|
/* DO NOTHING */
|
|
} else {
|
|
ret = create_service(nconf);
|
|
if (ret == 1)
|
|
/* Ignore this call */
|
|
continue;
|
|
if (ret < 0) {
|
|
/*
|
|
* Failed to bind port, so close
|
|
* off all sockets created and
|
|
* try again if the port# was
|
|
* dynamically assigned via
|
|
* bind(2).
|
|
*/
|
|
clearout_service();
|
|
if (mallocd_svcport != 0 &&
|
|
attempt_cnt <
|
|
GETPORT_MAXTRY) {
|
|
free(svcport_str);
|
|
svcport_str = NULL;
|
|
mallocd_svcport = 0;
|
|
} else {
|
|
errno = EADDRINUSE;
|
|
syslog(LOG_ERR,
|
|
"bindresvport_sa:"
|
|
" %m");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Start over at the first
|
|
* service.
|
|
*/
|
|
free(sock_fd);
|
|
sock_fdcnt = 0;
|
|
sock_fd = NULL;
|
|
nc_handle = setnetconfig();
|
|
attempt_cnt++;
|
|
} else if (mallocd_svcport != 0 &&
|
|
attempt_cnt == GETPORT_MAXTRY) {
|
|
/*
|
|
* For the last attempt, allow
|
|
* different port #s for each
|
|
* nconf by saving the
|
|
* svcport_str setting it back
|
|
* to NULL.
|
|
*/
|
|
port_list = realloc(port_list,
|
|
(port_len + 1) *
|
|
sizeof(char *));
|
|
if (port_list == NULL)
|
|
out_of_mem();
|
|
port_list[port_len++] =
|
|
svcport_str;
|
|
svcport_str = NULL;
|
|
mallocd_svcport = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Successfully bound the ports, so call complete_service() to
|
|
* do the rest of the setup on the service(s).
|
|
*/
|
|
sock_fdpos = 0;
|
|
port_pos = 0;
|
|
nc_handle = setnetconfig();
|
|
while ((nconf = getnetconfig(nc_handle))) {
|
|
if (nconf->nc_flag & NC_VISIBLE) {
|
|
if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
|
|
"inet6") == 0) {
|
|
/* DO NOTHING */
|
|
} else if (port_list != NULL) {
|
|
if (port_pos >= port_len) {
|
|
syslog(LOG_ERR, "too many"
|
|
" port#s");
|
|
exit(1);
|
|
}
|
|
complete_service(nconf,
|
|
port_list[port_pos++]);
|
|
} else
|
|
complete_service(nconf, svcport_str);
|
|
}
|
|
}
|
|
endnetconfig(nc_handle);
|
|
free(sock_fd);
|
|
if (port_list != NULL) {
|
|
for (port_pos = 0; port_pos < port_len; port_pos++)
|
|
free(port_list[port_pos]);
|
|
free(port_list);
|
|
}
|
|
|
|
if (xcreated == 0) {
|
|
syslog(LOG_ERR, "could not create any services");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Expand svc_run() here so that we can call get_exportlist(). */
|
|
curtime = nexttime = 0;
|
|
sigemptyset(&sighup_mask);
|
|
sigaddset(&sighup_mask, SIGHUP);
|
|
for (;;) {
|
|
clock_gettime(CLOCK_MONOTONIC, &tp);
|
|
curtime = tp.tv_sec;
|
|
curtime = curtime * 1000000 + tp.tv_nsec / 1000;
|
|
sigprocmask(SIG_BLOCK, &sighup_mask, &sig_mask);
|
|
if (got_sighup && curtime >= nexttime) {
|
|
got_sighup = 0;
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
get_exportlist(1);
|
|
clock_gettime(CLOCK_MONOTONIC, &tp);
|
|
nexttime = tp.tv_sec;
|
|
nexttime = nexttime * 1000000 + tp.tv_nsec / 1000 +
|
|
RELOADDELAY;
|
|
} else
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
|
|
/*
|
|
* If a reload is pending, poll for received request(s),
|
|
* otherwise set a RELOADDELAY timeout, since a SIGHUP
|
|
* could be processed between the got_sighup test and
|
|
* the select() system call.
|
|
*/
|
|
tv.tv_sec = 0;
|
|
if (got_sighup)
|
|
tv.tv_usec = 0;
|
|
else
|
|
tv.tv_usec = RELOADDELAY;
|
|
if (enable_rpcbind != 0) {
|
|
readfds = svc_fdset;
|
|
switch (select(svc_maxfd + 1, &readfds, NULL, NULL,
|
|
&tv)) {
|
|
case -1:
|
|
if (errno == EINTR) {
|
|
/* Allow a reload now. */
|
|
nexttime = 0;
|
|
continue;
|
|
}
|
|
syslog(LOG_ERR, "mountd died: select: %m");
|
|
exit(1);
|
|
case 0:
|
|
/* Allow a reload now. */
|
|
nexttime = 0;
|
|
continue;
|
|
default:
|
|
svc_getreqset(&readfds);
|
|
}
|
|
} else {
|
|
/* Simply wait for a signal. */
|
|
sigsuspend(&sig_mask);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This routine creates and binds sockets on the appropriate
|
|
* addresses. It gets called one time for each transport.
|
|
* It returns 0 upon success, 1 for ignore the call and -1 to indicate
|
|
* bind failed with EADDRINUSE.
|
|
* Any file descriptors that have been created are stored in sock_fd and
|
|
* the total count of them is maintained in sock_fdcnt.
|
|
*/
|
|
static int
|
|
create_service(struct netconfig *nconf)
|
|
{
|
|
struct addrinfo hints, *res = NULL;
|
|
struct sockaddr_in *sin;
|
|
struct sockaddr_in6 *sin6;
|
|
struct __rpc_sockinfo si;
|
|
int aicode;
|
|
int fd;
|
|
int nhostsbak;
|
|
int one = 1;
|
|
int r;
|
|
u_int32_t host_addr[4]; /* IPv4 or IPv6 */
|
|
int mallocd_res;
|
|
|
|
if ((nconf->nc_semantics != NC_TPI_CLTS) &&
|
|
(nconf->nc_semantics != NC_TPI_COTS) &&
|
|
(nconf->nc_semantics != NC_TPI_COTS_ORD))
|
|
return (1); /* not my type */
|
|
|
|
/*
|
|
* XXX - using RPC library internal functions.
|
|
*/
|
|
if (!__rpc_nconf2sockinfo(nconf, &si)) {
|
|
syslog(LOG_ERR, "cannot get information for %s",
|
|
nconf->nc_netid);
|
|
return (1);
|
|
}
|
|
|
|
/* Get mountd's address on this transport */
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_family = si.si_af;
|
|
hints.ai_socktype = si.si_socktype;
|
|
hints.ai_protocol = si.si_proto;
|
|
|
|
/*
|
|
* Bind to specific IPs if asked to
|
|
*/
|
|
nhostsbak = nhosts;
|
|
while (nhostsbak > 0) {
|
|
--nhostsbak;
|
|
sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
|
|
if (sock_fd == NULL)
|
|
out_of_mem();
|
|
sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
|
|
mallocd_res = 0;
|
|
|
|
hints.ai_flags = AI_PASSIVE;
|
|
|
|
/*
|
|
* XXX - using RPC library internal functions.
|
|
*/
|
|
if ((fd = __rpc_nconf2fd(nconf)) < 0) {
|
|
int non_fatal = 0;
|
|
if (errno == EAFNOSUPPORT &&
|
|
nconf->nc_semantics != NC_TPI_CLTS)
|
|
non_fatal = 1;
|
|
|
|
syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
|
|
"cannot create socket for %s", nconf->nc_netid);
|
|
if (non_fatal != 0)
|
|
continue;
|
|
exit(1);
|
|
}
|
|
|
|
switch (hints.ai_family) {
|
|
case AF_INET:
|
|
if (inet_pton(AF_INET, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
hints.ai_flags |= AI_NUMERICHOST;
|
|
} else {
|
|
/*
|
|
* Skip if we have an AF_INET6 address.
|
|
*/
|
|
if (inet_pton(AF_INET6, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
close(fd);
|
|
continue;
|
|
}
|
|
}
|
|
break;
|
|
case AF_INET6:
|
|
if (inet_pton(AF_INET6, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
hints.ai_flags |= AI_NUMERICHOST;
|
|
} else {
|
|
/*
|
|
* Skip if we have an AF_INET address.
|
|
*/
|
|
if (inet_pton(AF_INET, hosts[nhostsbak],
|
|
host_addr) == 1) {
|
|
close(fd);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We're doing host-based access checks here, so don't
|
|
* allow v4-in-v6 to confuse things. The kernel will
|
|
* disable it by default on NFS sockets too.
|
|
*/
|
|
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one,
|
|
sizeof one) < 0) {
|
|
syslog(LOG_ERR,
|
|
"can't disable v4-in-v6 on IPv6 socket");
|
|
exit(1);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If no hosts were specified, just bind to INADDR_ANY
|
|
*/
|
|
if (strcmp("*", hosts[nhostsbak]) == 0) {
|
|
if (svcport_str == NULL) {
|
|
res = malloc(sizeof(struct addrinfo));
|
|
if (res == NULL)
|
|
out_of_mem();
|
|
mallocd_res = 1;
|
|
res->ai_flags = hints.ai_flags;
|
|
res->ai_family = hints.ai_family;
|
|
res->ai_protocol = hints.ai_protocol;
|
|
switch (res->ai_family) {
|
|
case AF_INET:
|
|
sin = malloc(sizeof(struct sockaddr_in));
|
|
if (sin == NULL)
|
|
out_of_mem();
|
|
sin->sin_family = AF_INET;
|
|
sin->sin_port = htons(0);
|
|
sin->sin_addr.s_addr = htonl(INADDR_ANY);
|
|
res->ai_addr = (struct sockaddr*) sin;
|
|
res->ai_addrlen = (socklen_t)
|
|
sizeof(struct sockaddr_in);
|
|
break;
|
|
case AF_INET6:
|
|
sin6 = malloc(sizeof(struct sockaddr_in6));
|
|
if (sin6 == NULL)
|
|
out_of_mem();
|
|
sin6->sin6_family = AF_INET6;
|
|
sin6->sin6_port = htons(0);
|
|
sin6->sin6_addr = in6addr_any;
|
|
res->ai_addr = (struct sockaddr*) sin6;
|
|
res->ai_addrlen = (socklen_t)
|
|
sizeof(struct sockaddr_in6);
|
|
break;
|
|
default:
|
|
syslog(LOG_ERR, "bad addr fam %d",
|
|
res->ai_family);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
if ((aicode = getaddrinfo(NULL, svcport_str,
|
|
&hints, &res)) != 0) {
|
|
syslog(LOG_ERR,
|
|
"cannot get local address for %s: %s",
|
|
nconf->nc_netid,
|
|
gai_strerror(aicode));
|
|
close(fd);
|
|
continue;
|
|
}
|
|
}
|
|
} else {
|
|
if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
|
|
&hints, &res)) != 0) {
|
|
syslog(LOG_ERR,
|
|
"cannot get local address for %s: %s",
|
|
nconf->nc_netid, gai_strerror(aicode));
|
|
close(fd);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* Store the fd. */
|
|
sock_fd[sock_fdcnt - 1] = fd;
|
|
|
|
/* Now, attempt the bind. */
|
|
r = bindresvport_sa(fd, res->ai_addr);
|
|
if (r != 0) {
|
|
if (errno == EADDRINUSE && mallocd_svcport != 0) {
|
|
if (mallocd_res != 0) {
|
|
free(res->ai_addr);
|
|
free(res);
|
|
} else
|
|
freeaddrinfo(res);
|
|
return (-1);
|
|
}
|
|
syslog(LOG_ERR, "bindresvport_sa: %m");
|
|
exit(1);
|
|
}
|
|
|
|
if (svcport_str == NULL) {
|
|
svcport_str = malloc(NI_MAXSERV * sizeof(char));
|
|
if (svcport_str == NULL)
|
|
out_of_mem();
|
|
mallocd_svcport = 1;
|
|
|
|
if (getnameinfo(res->ai_addr,
|
|
res->ai_addr->sa_len, NULL, NI_MAXHOST,
|
|
svcport_str, NI_MAXSERV * sizeof(char),
|
|
NI_NUMERICHOST | NI_NUMERICSERV))
|
|
errx(1, "Cannot get port number");
|
|
}
|
|
if (mallocd_res != 0) {
|
|
free(res->ai_addr);
|
|
free(res);
|
|
} else
|
|
freeaddrinfo(res);
|
|
res = NULL;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Called after all the create_service() calls have succeeded, to complete
|
|
* the setup and registration.
|
|
*/
|
|
static void
|
|
complete_service(struct netconfig *nconf, char *port_str)
|
|
{
|
|
struct addrinfo hints, *res = NULL;
|
|
struct __rpc_sockinfo si;
|
|
struct netbuf servaddr;
|
|
SVCXPRT *transp = NULL;
|
|
int aicode, fd, nhostsbak;
|
|
int registered = 0;
|
|
|
|
if ((nconf->nc_semantics != NC_TPI_CLTS) &&
|
|
(nconf->nc_semantics != NC_TPI_COTS) &&
|
|
(nconf->nc_semantics != NC_TPI_COTS_ORD))
|
|
return; /* not my type */
|
|
|
|
/*
|
|
* XXX - using RPC library internal functions.
|
|
*/
|
|
if (!__rpc_nconf2sockinfo(nconf, &si)) {
|
|
syslog(LOG_ERR, "cannot get information for %s",
|
|
nconf->nc_netid);
|
|
return;
|
|
}
|
|
|
|
nhostsbak = nhosts;
|
|
while (nhostsbak > 0) {
|
|
--nhostsbak;
|
|
if (sock_fdpos >= sock_fdcnt) {
|
|
/* Should never happen. */
|
|
syslog(LOG_ERR, "Ran out of socket fd's");
|
|
return;
|
|
}
|
|
fd = sock_fd[sock_fdpos++];
|
|
if (fd < 0)
|
|
continue;
|
|
|
|
/*
|
|
* Using -1 tells listen(2) to use
|
|
* kern.ipc.soacceptqueue for the backlog.
|
|
*/
|
|
if (nconf->nc_semantics != NC_TPI_CLTS)
|
|
listen(fd, -1);
|
|
|
|
if (nconf->nc_semantics == NC_TPI_CLTS )
|
|
transp = svc_dg_create(fd, 0, 0);
|
|
else
|
|
transp = svc_vc_create(fd, RPC_MAXDATASIZE,
|
|
RPC_MAXDATASIZE);
|
|
|
|
if (transp != (SVCXPRT *) NULL) {
|
|
if (!svc_reg(transp, MOUNTPROG, MOUNTVERS, mntsrv,
|
|
NULL))
|
|
syslog(LOG_ERR,
|
|
"can't register %s MOUNTVERS service",
|
|
nconf->nc_netid);
|
|
if (!force_v2) {
|
|
if (!svc_reg(transp, MOUNTPROG, MOUNTVERS3,
|
|
mntsrv, NULL))
|
|
syslog(LOG_ERR,
|
|
"can't register %s MOUNTVERS3 service",
|
|
nconf->nc_netid);
|
|
}
|
|
} else
|
|
syslog(LOG_WARNING, "can't create %s services",
|
|
nconf->nc_netid);
|
|
|
|
if (registered == 0) {
|
|
registered = 1;
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = si.si_af;
|
|
hints.ai_socktype = si.si_socktype;
|
|
hints.ai_protocol = si.si_proto;
|
|
|
|
if ((aicode = getaddrinfo(NULL, port_str, &hints,
|
|
&res)) != 0) {
|
|
syslog(LOG_ERR, "cannot get local address: %s",
|
|
gai_strerror(aicode));
|
|
exit(1);
|
|
}
|
|
|
|
servaddr.buf = malloc(res->ai_addrlen);
|
|
memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
|
|
servaddr.len = res->ai_addrlen;
|
|
|
|
rpcb_set(MOUNTPROG, MOUNTVERS, nconf, &servaddr);
|
|
rpcb_set(MOUNTPROG, MOUNTVERS3, nconf, &servaddr);
|
|
|
|
xcreated++;
|
|
freeaddrinfo(res);
|
|
}
|
|
} /* end while */
|
|
}
|
|
|
|
/*
|
|
* Clear out sockets after a failure to bind one of them, so that the
|
|
* cycle of socket creation/binding can start anew.
|
|
*/
|
|
static void
|
|
clearout_service(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < sock_fdcnt; i++) {
|
|
if (sock_fd[i] >= 0) {
|
|
shutdown(sock_fd[i], SHUT_RDWR);
|
|
close(sock_fd[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: mountd [-2] [-d] [-e] [-l] [-n] [-p <port>] [-r] "
|
|
"[-S] [-h <bindip>] [export_file ...]\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* The mount rpc service
|
|
*/
|
|
void
|
|
mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
|
|
{
|
|
struct exportlist *ep;
|
|
struct dirlist *dp;
|
|
struct fhreturn fhr;
|
|
struct stat stb;
|
|
struct statfs fsb;
|
|
char host[NI_MAXHOST], numerichost[NI_MAXHOST];
|
|
int lookup_failed = 1;
|
|
struct sockaddr *saddr;
|
|
u_short sport;
|
|
char rpcpath[MNTPATHLEN + 1], dirpath[MAXPATHLEN];
|
|
int defset, hostset;
|
|
long bad = 0;
|
|
sigset_t sighup_mask;
|
|
int numsecflavors, *secflavorsp;
|
|
|
|
sigemptyset(&sighup_mask);
|
|
sigaddset(&sighup_mask, SIGHUP);
|
|
saddr = svc_getrpccaller(transp)->buf;
|
|
switch (saddr->sa_family) {
|
|
case AF_INET6:
|
|
sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
|
|
break;
|
|
case AF_INET:
|
|
sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
|
|
break;
|
|
default:
|
|
syslog(LOG_ERR, "request from unknown address family");
|
|
return;
|
|
}
|
|
switch (rqstp->rq_proc) {
|
|
case MOUNTPROC_MNT:
|
|
case MOUNTPROC_UMNT:
|
|
case MOUNTPROC_UMNTALL:
|
|
lookup_failed = getnameinfo(saddr, saddr->sa_len, host,
|
|
sizeof host, NULL, 0, 0);
|
|
}
|
|
getnameinfo(saddr, saddr->sa_len, numerichost,
|
|
sizeof numerichost, NULL, 0, NI_NUMERICHOST);
|
|
switch (rqstp->rq_proc) {
|
|
case NULLPROC:
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
return;
|
|
case MOUNTPROC_MNT:
|
|
if (sport >= IPPORT_RESERVED && resvport_only) {
|
|
syslog(LOG_NOTICE,
|
|
"mount request from %s from unprivileged port",
|
|
numerichost);
|
|
svcerr_weakauth(transp);
|
|
return;
|
|
}
|
|
if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
|
|
syslog(LOG_NOTICE, "undecodable mount request from %s",
|
|
numerichost);
|
|
svcerr_decode(transp);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get the real pathname and make sure it is a directory
|
|
* or a regular file if the -r option was specified
|
|
* and it exists.
|
|
*/
|
|
if (realpath(rpcpath, dirpath) == NULL ||
|
|
stat(dirpath, &stb) < 0 ||
|
|
statfs(dirpath, &fsb) < 0) {
|
|
chdir("/"); /* Just in case realpath doesn't */
|
|
syslog(LOG_NOTICE,
|
|
"mount request from %s for non existent path %s",
|
|
numerichost, dirpath);
|
|
if (debug)
|
|
warnx("stat failed on %s", dirpath);
|
|
bad = ENOENT; /* We will send error reply later */
|
|
}
|
|
if (!bad &&
|
|
!S_ISDIR(stb.st_mode) &&
|
|
(dir_only || !S_ISREG(stb.st_mode))) {
|
|
syslog(LOG_NOTICE,
|
|
"mount request from %s for non-directory path %s",
|
|
numerichost, dirpath);
|
|
if (debug)
|
|
warnx("mounting non-directory %s", dirpath);
|
|
bad = ENOTDIR; /* We will send error reply later */
|
|
}
|
|
|
|
/* Check in the exports list */
|
|
sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
|
|
if (bad)
|
|
ep = NULL;
|
|
else
|
|
ep = ex_search(&fsb.f_fsid, exphead);
|
|
hostset = defset = 0;
|
|
if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset,
|
|
&numsecflavors, &secflavorsp) ||
|
|
((dp = dirp_search(ep->ex_dirl, dirpath)) &&
|
|
chk_host(dp, saddr, &defset, &hostset, &numsecflavors,
|
|
&secflavorsp)) ||
|
|
(defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
|
|
scan_tree(ep->ex_dirl, saddr) == 0))) {
|
|
if (bad) {
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
|
|
(caddr_t)&bad))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
return;
|
|
}
|
|
if (hostset & DP_HOSTSET) {
|
|
fhr.fhr_flag = hostset;
|
|
fhr.fhr_numsecflavors = numsecflavors;
|
|
fhr.fhr_secflavors = secflavorsp;
|
|
} else {
|
|
fhr.fhr_flag = defset;
|
|
fhr.fhr_numsecflavors = ep->ex_defnumsecflavors;
|
|
fhr.fhr_secflavors = ep->ex_defsecflavors;
|
|
}
|
|
fhr.fhr_vers = rqstp->rq_vers;
|
|
/* Get the file handle */
|
|
memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
|
|
if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
|
|
bad = errno;
|
|
syslog(LOG_ERR, "can't get fh for %s", dirpath);
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
|
|
(caddr_t)&bad))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
return;
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs,
|
|
(caddr_t)&fhr))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
if (!lookup_failed)
|
|
add_mlist(host, dirpath);
|
|
else
|
|
add_mlist(numerichost, dirpath);
|
|
if (debug)
|
|
warnx("mount successful");
|
|
if (dolog)
|
|
syslog(LOG_NOTICE,
|
|
"mount request succeeded from %s for %s",
|
|
numerichost, dirpath);
|
|
} else {
|
|
if (!bad)
|
|
bad = EACCES;
|
|
syslog(LOG_NOTICE,
|
|
"mount request denied from %s for %s",
|
|
numerichost, dirpath);
|
|
}
|
|
|
|
if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long,
|
|
(caddr_t)&bad))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
return;
|
|
case MOUNTPROC_DUMP:
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, (caddr_t)NULL))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
else if (dolog)
|
|
syslog(LOG_NOTICE,
|
|
"dump request succeeded from %s",
|
|
numerichost);
|
|
return;
|
|
case MOUNTPROC_UMNT:
|
|
if (sport >= IPPORT_RESERVED && resvport_only) {
|
|
syslog(LOG_NOTICE,
|
|
"umount request from %s from unprivileged port",
|
|
numerichost);
|
|
svcerr_weakauth(transp);
|
|
return;
|
|
}
|
|
if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
|
|
syslog(LOG_NOTICE, "undecodable umount request from %s",
|
|
numerichost);
|
|
svcerr_decode(transp);
|
|
return;
|
|
}
|
|
if (realpath(rpcpath, dirpath) == NULL) {
|
|
syslog(LOG_NOTICE, "umount request from %s "
|
|
"for non existent path %s",
|
|
numerichost, dirpath);
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
if (!lookup_failed)
|
|
del_mlist(host, dirpath);
|
|
del_mlist(numerichost, dirpath);
|
|
if (dolog)
|
|
syslog(LOG_NOTICE,
|
|
"umount request succeeded from %s for %s",
|
|
numerichost, dirpath);
|
|
return;
|
|
case MOUNTPROC_UMNTALL:
|
|
if (sport >= IPPORT_RESERVED && resvport_only) {
|
|
syslog(LOG_NOTICE,
|
|
"umountall request from %s from unprivileged port",
|
|
numerichost);
|
|
svcerr_weakauth(transp);
|
|
return;
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
if (!lookup_failed)
|
|
del_mlist(host, NULL);
|
|
del_mlist(numerichost, NULL);
|
|
if (dolog)
|
|
syslog(LOG_NOTICE,
|
|
"umountall request succeeded from %s",
|
|
numerichost);
|
|
return;
|
|
case MOUNTPROC_EXPORT:
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, (caddr_t)NULL))
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_explist_brief,
|
|
(caddr_t)NULL))
|
|
syslog(LOG_ERR, "can't send reply");
|
|
if (dolog)
|
|
syslog(LOG_NOTICE,
|
|
"export request succeeded from %s",
|
|
numerichost);
|
|
return;
|
|
default:
|
|
svcerr_noproc(transp);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Xdr conversion for a dirpath string
|
|
*/
|
|
static int
|
|
xdr_dir(XDR *xdrsp, char *dirp)
|
|
{
|
|
return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
|
|
}
|
|
|
|
/*
|
|
* Xdr routine to generate file handle reply
|
|
*/
|
|
static int
|
|
xdr_fhs(XDR *xdrsp, caddr_t cp)
|
|
{
|
|
struct fhreturn *fhrp = (struct fhreturn *)cp;
|
|
u_long ok = 0, len, auth;
|
|
int i;
|
|
|
|
if (!xdr_long(xdrsp, &ok))
|
|
return (0);
|
|
switch (fhrp->fhr_vers) {
|
|
case 1:
|
|
return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH));
|
|
case 3:
|
|
len = NFSX_V3FH;
|
|
if (!xdr_long(xdrsp, &len))
|
|
return (0);
|
|
if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
|
|
return (0);
|
|
if (fhrp->fhr_numsecflavors) {
|
|
if (!xdr_int(xdrsp, &fhrp->fhr_numsecflavors))
|
|
return (0);
|
|
for (i = 0; i < fhrp->fhr_numsecflavors; i++)
|
|
if (!xdr_int(xdrsp, &fhrp->fhr_secflavors[i]))
|
|
return (0);
|
|
return (1);
|
|
} else {
|
|
auth = AUTH_SYS;
|
|
len = 1;
|
|
if (!xdr_long(xdrsp, &len))
|
|
return (0);
|
|
return (xdr_long(xdrsp, &auth));
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
xdr_mlist(XDR *xdrsp, caddr_t cp __unused)
|
|
{
|
|
struct mountlist *mlp;
|
|
int true = 1;
|
|
int false = 0;
|
|
char *strp;
|
|
|
|
SLIST_FOREACH(mlp, &mlhead, next) {
|
|
if (!xdr_bool(xdrsp, &true))
|
|
return (0);
|
|
strp = &mlp->ml_host[0];
|
|
if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
|
|
return (0);
|
|
strp = &mlp->ml_dirp[0];
|
|
if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
|
|
return (0);
|
|
}
|
|
if (!xdr_bool(xdrsp, &false))
|
|
return (0);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Xdr conversion for export list
|
|
*/
|
|
static int
|
|
xdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief)
|
|
{
|
|
struct exportlist *ep;
|
|
int false = 0;
|
|
int putdef;
|
|
sigset_t sighup_mask;
|
|
int i;
|
|
|
|
sigemptyset(&sighup_mask);
|
|
sigaddset(&sighup_mask, SIGHUP);
|
|
sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
|
|
|
|
for (i = 0; i < exphashsize; i++)
|
|
SLIST_FOREACH(ep, &exphead[i], entries) {
|
|
putdef = 0;
|
|
if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir,
|
|
&putdef, brief))
|
|
goto errout;
|
|
if (ep->ex_defdir && putdef == 0 &&
|
|
put_exlist(ep->ex_defdir, xdrsp, NULL,
|
|
&putdef, brief))
|
|
goto errout;
|
|
}
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
if (!xdr_bool(xdrsp, &false))
|
|
return (0);
|
|
return (1);
|
|
errout:
|
|
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Called from xdr_explist() to traverse the tree and export the
|
|
* directory paths.
|
|
*/
|
|
static int
|
|
put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp,
|
|
int brief)
|
|
{
|
|
struct grouplist *grp;
|
|
struct hostlist *hp;
|
|
int true = 1;
|
|
int false = 0;
|
|
int gotalldir = 0;
|
|
char *strp;
|
|
|
|
if (dp) {
|
|
if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief))
|
|
return (1);
|
|
if (!xdr_bool(xdrsp, &true))
|
|
return (1);
|
|
strp = dp->dp_dirp;
|
|
if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
|
|
return (1);
|
|
if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
|
|
gotalldir = 1;
|
|
*putdefp = 1;
|
|
}
|
|
if (brief) {
|
|
if (!xdr_bool(xdrsp, &true))
|
|
return (1);
|
|
strp = "(...)";
|
|
if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
|
|
return (1);
|
|
} else if ((dp->dp_flag & DP_DEFSET) == 0 &&
|
|
(gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
|
|
hp = dp->dp_hosts;
|
|
while (hp) {
|
|
grp = hp->ht_grp;
|
|
if (grp->gr_type == GT_HOST) {
|
|
if (!xdr_bool(xdrsp, &true))
|
|
return (1);
|
|
strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
|
|
if (!xdr_string(xdrsp, &strp,
|
|
MNTNAMLEN))
|
|
return (1);
|
|
} else if (grp->gr_type == GT_NET) {
|
|
if (!xdr_bool(xdrsp, &true))
|
|
return (1);
|
|
strp = grp->gr_ptr.gt_net.nt_name;
|
|
if (!xdr_string(xdrsp, &strp,
|
|
MNTNAMLEN))
|
|
return (1);
|
|
}
|
|
hp = hp->ht_next;
|
|
if (gotalldir && hp == (struct hostlist *)NULL) {
|
|
hp = adp->dp_hosts;
|
|
gotalldir = 0;
|
|
}
|
|
}
|
|
}
|
|
if (!xdr_bool(xdrsp, &false))
|
|
return (1);
|
|
if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief))
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
xdr_explist(XDR *xdrsp, caddr_t cp)
|
|
{
|
|
|
|
return xdr_explist_common(xdrsp, cp, 0);
|
|
}
|
|
|
|
static int
|
|
xdr_explist_brief(XDR *xdrsp, caddr_t cp)
|
|
{
|
|
|
|
return xdr_explist_common(xdrsp, cp, 1);
|
|
}
|
|
|
|
static char *line;
|
|
static size_t linesize;
|
|
static FILE *exp_file;
|
|
|
|
/*
|
|
* Get the export list from one, currently open file
|
|
*/
|
|
static void
|
|
get_exportlist_one(int passno)
|
|
{
|
|
struct exportlist *ep;
|
|
struct grouplist *grp, *tgrp, *savgrp;
|
|
struct dirlist *dirhead;
|
|
struct statfs fsb;
|
|
struct expcred anon;
|
|
char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
|
|
int len, has_host, got_nondir, dirplen, netgrp;
|
|
uint64_t exflags;
|
|
|
|
v4root_phase = 0;
|
|
anon.cr_groups = NULL;
|
|
dirhead = (struct dirlist *)NULL;
|
|
while (get_line()) {
|
|
if (debug)
|
|
warnx("got line %s", line);
|
|
cp = line;
|
|
nextfield(&cp, &endcp);
|
|
if (*cp == '#')
|
|
goto nextline;
|
|
|
|
/*
|
|
* Set defaults.
|
|
*/
|
|
has_host = FALSE;
|
|
anon.cr_groups = anon.cr_smallgrps;
|
|
anon.cr_uid = UID_NOBODY;
|
|
anon.cr_ngroups = 1;
|
|
anon.cr_groups[0] = GID_NOGROUP;
|
|
exflags = MNT_EXPORTED;
|
|
got_nondir = 0;
|
|
opt_flags = 0;
|
|
ep = (struct exportlist *)NULL;
|
|
dirp = NULL;
|
|
|
|
/*
|
|
* Handle the V4 root dir.
|
|
*/
|
|
if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') {
|
|
/*
|
|
* V4: just indicates that it is the v4 root point,
|
|
* so skip over that and set v4root_phase.
|
|
*/
|
|
if (v4root_phase > 0) {
|
|
syslog(LOG_ERR, "V4:duplicate line, ignored");
|
|
goto nextline;
|
|
}
|
|
v4root_phase = 1;
|
|
cp += 3;
|
|
nextfield(&cp, &endcp);
|
|
}
|
|
|
|
/*
|
|
* Create new exports list entry
|
|
*/
|
|
len = endcp-cp;
|
|
tgrp = grp = get_grp();
|
|
while (len > 0) {
|
|
if (len > MNTNAMLEN) {
|
|
getexp_err(ep, tgrp, "mountpoint too long");
|
|
goto nextline;
|
|
}
|
|
if (*cp == '-') {
|
|
if (ep == (struct exportlist *)NULL) {
|
|
getexp_err(ep, tgrp,
|
|
"flag before export path definition");
|
|
goto nextline;
|
|
}
|
|
if (debug)
|
|
warnx("doing opt %s", cp);
|
|
got_nondir = 1;
|
|
if (do_opt(&cp, &endcp, ep, grp, &has_host,
|
|
&exflags, &anon)) {
|
|
getexp_err(ep, tgrp, NULL);
|
|
goto nextline;
|
|
}
|
|
} else if (*cp == '/') {
|
|
savedc = *endcp;
|
|
*endcp = '\0';
|
|
if (v4root_phase > 1) {
|
|
if (dirp != NULL) {
|
|
getexp_err(ep, tgrp, "Multiple V4 dirs");
|
|
goto nextline;
|
|
}
|
|
}
|
|
if (check_dirpath(cp) &&
|
|
statfs(cp, &fsb) >= 0) {
|
|
if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0)
|
|
syslog(LOG_ERR, "Warning: exporting of "
|
|
"automounted fs %s not supported", cp);
|
|
if (got_nondir) {
|
|
getexp_err(ep, tgrp, "dirs must be first");
|
|
goto nextline;
|
|
}
|
|
if (v4root_phase == 1) {
|
|
if (dirp != NULL) {
|
|
getexp_err(ep, tgrp, "Multiple V4 dirs");
|
|
goto nextline;
|
|
}
|
|
if (strlen(v4root_dirpath) == 0) {
|
|
strlcpy(v4root_dirpath, cp,
|
|
sizeof (v4root_dirpath));
|
|
} else if (strcmp(v4root_dirpath, cp)
|
|
!= 0) {
|
|
syslog(LOG_ERR,
|
|
"different V4 dirpath %s", cp);
|
|
getexp_err(ep, tgrp, NULL);
|
|
goto nextline;
|
|
}
|
|
dirp = cp;
|
|
v4root_phase = 2;
|
|
got_nondir = 1;
|
|
ep = get_exp();
|
|
} else {
|
|
if (ep) {
|
|
if (fsidcmp(&ep->ex_fs, &fsb.f_fsid)
|
|
!= 0) {
|
|
getexp_err(ep, tgrp,
|
|
"fsid mismatch");
|
|
goto nextline;
|
|
}
|
|
} else {
|
|
/*
|
|
* See if this directory is already
|
|
* in the list.
|
|
*/
|
|
ep = ex_search(&fsb.f_fsid, exphead);
|
|
if (ep == (struct exportlist *)NULL) {
|
|
ep = get_exp();
|
|
ep->ex_fs = fsb.f_fsid;
|
|
ep->ex_fsdir = strdup(fsb.f_mntonname);
|
|
if (ep->ex_fsdir == NULL)
|
|
out_of_mem();
|
|
if (debug)
|
|
warnx(
|
|
"making new ep fs=0x%x,0x%x",
|
|
fsb.f_fsid.val[0],
|
|
fsb.f_fsid.val[1]);
|
|
} else if (debug)
|
|
warnx("found ep fs=0x%x,0x%x",
|
|
fsb.f_fsid.val[0],
|
|
fsb.f_fsid.val[1]);
|
|
}
|
|
|
|
/*
|
|
* Add dirpath to export mount point.
|
|
*/
|
|
dirp = add_expdir(&dirhead, cp, len);
|
|
dirplen = len;
|
|
}
|
|
} else {
|
|
getexp_err(ep, tgrp,
|
|
"symbolic link in export path or statfs failed");
|
|
goto nextline;
|
|
}
|
|
*endcp = savedc;
|
|
} else {
|
|
savedc = *endcp;
|
|
*endcp = '\0';
|
|
got_nondir = 1;
|
|
if (ep == (struct exportlist *)NULL) {
|
|
getexp_err(ep, tgrp,
|
|
"host(s) before export path definition");
|
|
goto nextline;
|
|
}
|
|
|
|
/*
|
|
* Get the host or netgroup.
|
|
*/
|
|
setnetgrent(cp);
|
|
netgrp = getnetgrent(&hst, &usr, &dom);
|
|
do {
|
|
if (has_host) {
|
|
grp->gr_next = get_grp();
|
|
grp = grp->gr_next;
|
|
}
|
|
if (netgrp) {
|
|
if (hst == 0) {
|
|
syslog(LOG_ERR,
|
|
"null hostname in netgroup %s, skipping", cp);
|
|
grp->gr_type = GT_IGNORE;
|
|
} else if (get_host(hst, grp, tgrp)) {
|
|
syslog(LOG_ERR,
|
|
"bad host %s in netgroup %s, skipping", hst, cp);
|
|
grp->gr_type = GT_IGNORE;
|
|
}
|
|
} else if (get_host(cp, grp, tgrp)) {
|
|
syslog(LOG_ERR, "bad host %s, skipping", cp);
|
|
grp->gr_type = GT_IGNORE;
|
|
}
|
|
has_host = TRUE;
|
|
} while (netgrp && getnetgrent(&hst, &usr, &dom));
|
|
endnetgrent();
|
|
*endcp = savedc;
|
|
}
|
|
cp = endcp;
|
|
nextfield(&cp, &endcp);
|
|
len = endcp - cp;
|
|
}
|
|
if (check_options(dirhead)) {
|
|
getexp_err(ep, tgrp, NULL);
|
|
goto nextline;
|
|
}
|
|
if (!has_host) {
|
|
grp->gr_type = GT_DEFAULT;
|
|
if (debug)
|
|
warnx("adding a default entry");
|
|
|
|
/*
|
|
* Don't allow a network export coincide with a list of
|
|
* host(s) on the same line.
|
|
*/
|
|
} else if ((opt_flags & OP_NET) && tgrp->gr_next) {
|
|
getexp_err(ep, tgrp, "network/host conflict");
|
|
goto nextline;
|
|
|
|
/*
|
|
* If an export list was specified on this line, make sure
|
|
* that we have at least one valid entry, otherwise skip it.
|
|
*/
|
|
} else {
|
|
grp = tgrp;
|
|
while (grp && grp->gr_type == GT_IGNORE)
|
|
grp = grp->gr_next;
|
|
if (! grp) {
|
|
getexp_err(ep, tgrp, "no valid entries");
|
|
goto nextline;
|
|
}
|
|
}
|
|
|
|
if (v4root_phase == 1) {
|
|
getexp_err(ep, tgrp, "V4:root, no dirp, ignored");
|
|
goto nextline;
|
|
}
|
|
|
|
/*
|
|
* Loop through hosts, pushing the exports into the kernel.
|
|
* After loop, tgrp points to the start of the list and
|
|
* grp points to the last entry in the list.
|
|
* Do not do the do_mount() for passno == 1, since the
|
|
* second pass will do it, as required.
|
|
*/
|
|
grp = tgrp;
|
|
do {
|
|
grp->gr_exflags = exflags;
|
|
cp_cred(&grp->gr_anon, &anon);
|
|
if (v4root_phase == 2 && passno == 0)
|
|
LOGDEBUG("do_mount v4root");
|
|
if (passno == 0 && do_mount(ep, grp, exflags, &anon,
|
|
dirp, dirplen, &fsb, ep->ex_numsecflavors,
|
|
ep->ex_secflavors)) {
|
|
getexp_err(ep, tgrp, NULL);
|
|
goto nextline;
|
|
}
|
|
} while (grp->gr_next && (grp = grp->gr_next));
|
|
|
|
/*
|
|
* For V4: don't enter in mount lists.
|
|
*/
|
|
if (v4root_phase > 0 && v4root_phase <= 2) {
|
|
/*
|
|
* These structures are used for the reload,
|
|
* so save them for that case. Otherwise, just
|
|
* free them up now.
|
|
*/
|
|
if (passno == 1 && ep != NULL) {
|
|
savgrp = tgrp;
|
|
while (tgrp != NULL) {
|
|
/*
|
|
* Save the security flavors and exflags
|
|
* for this host set in the groups.
|
|
*/
|
|
tgrp->gr_numsecflavors =
|
|
ep->ex_numsecflavors;
|
|
if (ep->ex_numsecflavors > 0)
|
|
memcpy(tgrp->gr_secflavors,
|
|
ep->ex_secflavors,
|
|
sizeof(ep->ex_secflavors));
|
|
tgrp = tgrp->gr_next;
|
|
}
|
|
if (v4root_ep == NULL) {
|
|
v4root_ep = ep;
|
|
ep = NULL; /* Don't free below. */
|
|
}
|
|
grp->gr_next = v4root_ep->ex_grphead;
|
|
v4root_ep->ex_grphead = savgrp;
|
|
}
|
|
if (ep != NULL)
|
|
free_exp(ep);
|
|
while (tgrp != NULL) {
|
|
grp = tgrp;
|
|
tgrp = tgrp->gr_next;
|
|
free_grp(grp);
|
|
}
|
|
goto nextline;
|
|
}
|
|
|
|
/*
|
|
* Success. Update the data structures.
|
|
*/
|
|
if (has_host) {
|
|
hang_dirp(dirhead, tgrp, ep, opt_flags, &anon, exflags);
|
|
grp->gr_next = ep->ex_grphead;
|
|
ep->ex_grphead = tgrp;
|
|
} else {
|
|
hang_dirp(dirhead, (struct grouplist *)NULL, ep,
|
|
opt_flags, &anon, exflags);
|
|
free_grp(grp);
|
|
}
|
|
dirhead = (struct dirlist *)NULL;
|
|
if ((ep->ex_flag & EX_LINKED) == 0) {
|
|
insert_exports(ep, exphead);
|
|
|
|
ep->ex_flag |= EX_LINKED;
|
|
}
|
|
nextline:
|
|
v4root_phase = 0;
|
|
if (dirhead) {
|
|
free_dir(dirhead);
|
|
dirhead = (struct dirlist *)NULL;
|
|
}
|
|
if (anon.cr_groups != anon.cr_smallgrps) {
|
|
free(anon.cr_groups);
|
|
anon.cr_groups = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the export list from all specified files
|
|
*/
|
|
static void
|
|
get_exportlist(int passno)
|
|
{
|
|
struct export_args export;
|
|
struct iovec *iov;
|
|
struct statfs *mntbufp;
|
|
char errmsg[255];
|
|
int error, i, nfs_maxvers, num;
|
|
int iovlen;
|
|
struct nfsex_args eargs;
|
|
FILE *debug_file;
|
|
size_t nfs_maxvers_size;
|
|
|
|
if ((debug_file = fopen(_PATH_MOUNTDDEBUG, "r")) != NULL) {
|
|
fclose(debug_file);
|
|
logdebug = 1;
|
|
} else
|
|
logdebug = 0;
|
|
LOGDEBUG("passno=%d", passno);
|
|
v4root_dirpath[0] = '\0';
|
|
free_v4rootexp();
|
|
if (passno == 1) {
|
|
/*
|
|
* Save the current lists as old ones, so that the new lists
|
|
* can be compared with the old ones in the 2nd pass.
|
|
*/
|
|
for (i = 0; i < exphashsize; i++) {
|
|
SLIST_FIRST(&oldexphead[i]) = SLIST_FIRST(&exphead[i]);
|
|
SLIST_INIT(&exphead[i]);
|
|
}
|
|
|
|
/* Note that the public fh has not yet been set. */
|
|
has_set_publicfh = 0;
|
|
|
|
/* Read the export file(s) and process them */
|
|
read_exportfile(passno);
|
|
} else {
|
|
/*
|
|
* Just make the old lists empty.
|
|
* exphashsize == 0 for the first call, before oldexphead
|
|
* has been initialized-->loop won't be executed.
|
|
*/
|
|
for (i = 0; i < exphashsize; i++)
|
|
SLIST_INIT(&oldexphead[i]);
|
|
}
|
|
|
|
bzero(&export, sizeof(export));
|
|
export.ex_flags = MNT_DELEXPORT;
|
|
iov = NULL;
|
|
iovlen = 0;
|
|
bzero(errmsg, sizeof(errmsg));
|
|
|
|
if (suspend_nfsd != 0)
|
|
(void)nfssvc(NFSSVC_SUSPENDNFSD, NULL);
|
|
/*
|
|
* Delete the old V4 root dir.
|
|
*/
|
|
bzero(&eargs, sizeof (eargs));
|
|
eargs.export.ex_flags = MNT_DELEXPORT;
|
|
if (nfssvc(NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT, (caddr_t)&eargs) < 0 &&
|
|
errno != ENOENT)
|
|
syslog(LOG_ERR, "Can't delete exports for V4:");
|
|
|
|
build_iovec(&iov, &iovlen, "fstype", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "fspath", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "from", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "update", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "export", &export,
|
|
sizeof(export));
|
|
build_iovec(&iov, &iovlen, "errmsg", errmsg,
|
|
sizeof(errmsg));
|
|
|
|
/*
|
|
* For passno == 1, compare the old and new lists updating the kernel
|
|
* exports for any cases that have changed.
|
|
* This call is doing the second pass through the lists.
|
|
* If it fails, fall back on the bulk reload.
|
|
*/
|
|
if (passno == 1 && compare_nmount_exportlist(iov, iovlen, errmsg) ==
|
|
0) {
|
|
LOGDEBUG("compareok");
|
|
/* Free up the old lists. */
|
|
free_exports(oldexphead);
|
|
} else {
|
|
LOGDEBUG("doing passno=0");
|
|
/*
|
|
* Clear flag that notes if a public fh has been exported.
|
|
* It is set by do_mount() if MNT_EXPUBLIC is set for the entry.
|
|
*/
|
|
has_publicfh = 0;
|
|
|
|
/* exphead == NULL if not yet allocated (first call). */
|
|
if (exphead != NULL) {
|
|
/*
|
|
* First, get rid of the old lists.
|
|
*/
|
|
free_exports(exphead);
|
|
free_exports(oldexphead);
|
|
}
|
|
|
|
/*
|
|
* And delete exports that are in the kernel for all local
|
|
* filesystems.
|
|
* XXX: Should know how to handle all local exportable
|
|
* filesystems.
|
|
*/
|
|
num = getmntinfo(&mntbufp, MNT_NOWAIT);
|
|
|
|
/* Allocate hash tables, for first call. */
|
|
if (exphead == NULL) {
|
|
/* Target an average linked list length of 10. */
|
|
exphashsize = num / 10;
|
|
if (exphashsize < 1)
|
|
exphashsize = 1;
|
|
else if (exphashsize > 100000)
|
|
exphashsize = 100000;
|
|
exphead = malloc(exphashsize * sizeof(*exphead));
|
|
oldexphead = malloc(exphashsize * sizeof(*oldexphead));
|
|
if (exphead == NULL || oldexphead == NULL)
|
|
errx(1, "Can't malloc hash tables");
|
|
|
|
for (i = 0; i < exphashsize; i++) {
|
|
SLIST_INIT(&exphead[i]);
|
|
SLIST_INIT(&oldexphead[i]);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < num; i++)
|
|
delete_export(iov, iovlen, &mntbufp[i], errmsg);
|
|
|
|
|
|
/* Read the export file(s) and process them */
|
|
read_exportfile(0);
|
|
}
|
|
|
|
if (strlen(v4root_dirpath) == 0) {
|
|
/* Check to see if a V4: line is needed. */
|
|
nfs_maxvers_size = sizeof(nfs_maxvers);
|
|
error = sysctlbyname("vfs.nfsd.server_max_nfsvers",
|
|
&nfs_maxvers, &nfs_maxvers_size, NULL, 0);
|
|
if (error != 0 || nfs_maxvers < NFS_VER2 || nfs_maxvers >
|
|
NFS_VER4) {
|
|
syslog(LOG_ERR, "sysctlbyname(vfs.nfsd."
|
|
"server_max_nfsvers) failed, defaulting to NFSv3");
|
|
nfs_maxvers = NFS_VER3;
|
|
}
|
|
if (nfs_maxvers == NFS_VER4)
|
|
syslog(LOG_ERR, "NFSv4 requires at least one V4: line");
|
|
}
|
|
|
|
if (iov != NULL) {
|
|
/* Free strings allocated by strdup() in getmntopts.c */
|
|
free(iov[0].iov_base); /* fstype */
|
|
free(iov[2].iov_base); /* fspath */
|
|
free(iov[4].iov_base); /* from */
|
|
free(iov[6].iov_base); /* update */
|
|
free(iov[8].iov_base); /* export */
|
|
free(iov[10].iov_base); /* errmsg */
|
|
|
|
/* free iov, allocated by realloc() */
|
|
free(iov);
|
|
iovlen = 0;
|
|
}
|
|
|
|
/*
|
|
* If there was no public fh, clear any previous one set.
|
|
*/
|
|
if (has_publicfh == 0) {
|
|
LOGDEBUG("clear public fh");
|
|
(void) nfssvc(NFSSVC_NOPUBLICFH, NULL);
|
|
}
|
|
|
|
/* Resume the nfsd. If they weren't suspended, this is harmless. */
|
|
(void)nfssvc(NFSSVC_RESUMENFSD, NULL);
|
|
LOGDEBUG("eo get_exportlist");
|
|
}
|
|
|
|
/*
|
|
* Insert an export entry in the appropriate list.
|
|
*/
|
|
static void
|
|
insert_exports(struct exportlist *ep, struct exportlisthead *exhp)
|
|
{
|
|
uint32_t i;
|
|
|
|
i = EXPHASH(&ep->ex_fs);
|
|
LOGDEBUG("fs=%s hash=%i", ep->ex_fsdir, i);
|
|
SLIST_INSERT_HEAD(&exhp[i], ep, entries);
|
|
}
|
|
|
|
/*
|
|
* Free up the exports lists passed in as arguments.
|
|
*/
|
|
static void
|
|
free_exports(struct exportlisthead *exhp)
|
|
{
|
|
struct exportlist *ep, *ep2;
|
|
int i;
|
|
|
|
for (i = 0; i < exphashsize; i++) {
|
|
SLIST_FOREACH_SAFE(ep, &exhp[i], entries, ep2) {
|
|
SLIST_REMOVE(&exhp[i], ep, exportlist, entries);
|
|
free_exp(ep);
|
|
}
|
|
SLIST_INIT(&exhp[i]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read the exports file(s) and call get_exportlist_one() for each line.
|
|
*/
|
|
static void
|
|
read_exportfile(int passno)
|
|
{
|
|
int done, i;
|
|
|
|
/*
|
|
* Read in the exports file and build the list, calling
|
|
* nmount() as we go along to push the export rules into the kernel.
|
|
*/
|
|
done = 0;
|
|
for (i = 0; exnames[i] != NULL; i++) {
|
|
if (debug)
|
|
warnx("reading exports from %s", exnames[i]);
|
|
if ((exp_file = fopen(exnames[i], "r")) == NULL) {
|
|
syslog(LOG_WARNING, "can't open %s", exnames[i]);
|
|
continue;
|
|
}
|
|
get_exportlist_one(passno);
|
|
fclose(exp_file);
|
|
done++;
|
|
}
|
|
if (done == 0) {
|
|
syslog(LOG_ERR, "can't open any exports file");
|
|
exit(2);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Compare the export lists against the old ones and do nmount() operations
|
|
* for any cases that have changed. This avoids doing nmount() for entries
|
|
* that have not changed.
|
|
* Return 0 upon success, 1 otherwise.
|
|
*/
|
|
static int
|
|
compare_nmount_exportlist(struct iovec *iov, int iovlen, char *errmsg)
|
|
{
|
|
struct exportlist *ep, *oep;
|
|
struct grouplist *grp;
|
|
struct statfs fs, ofs;
|
|
int i, ret;
|
|
|
|
/*
|
|
* Loop through the current list and look for an entry in the old
|
|
* list.
|
|
* If found, check to see if it the same.
|
|
* If it is not the same, delete and re-export.
|
|
* Then mark it done on the old list.
|
|
* else (not found)
|
|
* export it.
|
|
* Any entries left in the old list after processing must have their
|
|
* exports deleted.
|
|
*/
|
|
for (i = 0; i < exphashsize; i++)
|
|
SLIST_FOREACH(ep, &exphead[i], entries) {
|
|
LOGDEBUG("foreach ep=%s", ep->ex_fsdir);
|
|
oep = ex_search(&ep->ex_fs, oldexphead);
|
|
if (oep != NULL) {
|
|
/*
|
|
* Check the mount paths are the same.
|
|
* If not, return 1 so that the reload of the
|
|
* exports will be done in bulk, the
|
|
* passno == 0 way.
|
|
*/
|
|
LOGDEBUG("found old exp");
|
|
if (strcmp(ep->ex_fsdir, oep->ex_fsdir) != 0)
|
|
return (1);
|
|
LOGDEBUG("same fsdir");
|
|
/*
|
|
* Test to see if the entry is the same.
|
|
* If not the same delete exports and
|
|
* re-export.
|
|
*/
|
|
if (compare_export(ep, oep) != 0) {
|
|
/*
|
|
* Clear has_publicfh if if was set
|
|
* in the old exports, but only if it
|
|
* has not been set during processing of
|
|
* the exports for this pass, as
|
|
* indicated by has_set_publicfh.
|
|
*/
|
|
if (has_set_publicfh == 0 &&
|
|
(oep->ex_flag & EX_PUBLICFH) != 0)
|
|
has_publicfh = 0;
|
|
|
|
/* Delete and re-export. */
|
|
if (statfs(ep->ex_fsdir, &fs) < 0)
|
|
return (1);
|
|
delete_export(iov, iovlen, &fs, errmsg);
|
|
ret = do_export_mount(ep, &fs);
|
|
if (ret != 0)
|
|
return (ret);
|
|
}
|
|
oep->ex_flag |= EX_DONE;
|
|
LOGDEBUG("exdone");
|
|
} else {
|
|
LOGDEBUG("not found so export");
|
|
/* Not found, so do export. */
|
|
if (statfs(ep->ex_fsdir, &fs) < 0)
|
|
return (1);
|
|
ret = do_export_mount(ep, &fs);
|
|
if (ret != 0)
|
|
return (ret);
|
|
}
|
|
}
|
|
|
|
/* Delete exports not done. */
|
|
for (i = 0; i < exphashsize; i++)
|
|
SLIST_FOREACH(oep, &oldexphead[i], entries) {
|
|
if ((oep->ex_flag & EX_DONE) == 0) {
|
|
LOGDEBUG("not done delete=%s", oep->ex_fsdir);
|
|
if (statfs(oep->ex_fsdir, &ofs) >= 0 &&
|
|
fsidcmp(&oep->ex_fs, &ofs.f_fsid) == 0) {
|
|
LOGDEBUG("do delete");
|
|
/*
|
|
* Clear has_publicfh if if was set
|
|
* in the old exports, but only if it
|
|
* has not been set during processing of
|
|
* the exports for this pass, as
|
|
* indicated by has_set_publicfh.
|
|
*/
|
|
if (has_set_publicfh == 0 &&
|
|
(oep->ex_flag & EX_PUBLICFH) != 0)
|
|
has_publicfh = 0;
|
|
|
|
delete_export(iov, iovlen, &ofs,
|
|
errmsg);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Do the V4 root exports, as required. */
|
|
grp = NULL;
|
|
if (v4root_ep != NULL)
|
|
grp = v4root_ep->ex_grphead;
|
|
v4root_phase = 2;
|
|
while (v4root_ep != NULL && grp != NULL) {
|
|
LOGDEBUG("v4root expath=%s", v4root_dirpath);
|
|
ret = do_mount(v4root_ep, grp, grp->gr_exflags, &grp->gr_anon,
|
|
v4root_dirpath, strlen(v4root_dirpath), &fs,
|
|
grp->gr_numsecflavors, grp->gr_secflavors);
|
|
if (ret != 0) {
|
|
v4root_phase = 0;
|
|
return (ret);
|
|
}
|
|
grp = grp->gr_next;
|
|
}
|
|
v4root_phase = 0;
|
|
free_v4rootexp();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Compare old and current exportlist entries for the fsid and return 0
|
|
* if they are the same, 1 otherwise.
|
|
*/
|
|
static int
|
|
compare_export(struct exportlist *ep, struct exportlist *oep)
|
|
{
|
|
struct grouplist *grp, *ogrp;
|
|
|
|
if (strcmp(ep->ex_fsdir, oep->ex_fsdir) != 0)
|
|
return (1);
|
|
if ((ep->ex_flag & EX_DEFSET) != (oep->ex_flag & EX_DEFSET))
|
|
return (1);
|
|
if ((ep->ex_defdir != NULL && oep->ex_defdir == NULL) ||
|
|
(ep->ex_defdir == NULL && oep->ex_defdir != NULL))
|
|
return (1);
|
|
if (ep->ex_defdir != NULL && (ep->ex_defdir->dp_flag & DP_DEFSET) !=
|
|
(oep->ex_defdir->dp_flag & DP_DEFSET))
|
|
return (1);
|
|
if ((ep->ex_flag & EX_DEFSET) != 0 && (ep->ex_defnumsecflavors !=
|
|
oep->ex_defnumsecflavors || ep->ex_defexflags !=
|
|
oep->ex_defexflags || compare_cred(&ep->ex_defanon,
|
|
&oep->ex_defanon) != 0 || compare_secflavor(ep->ex_defsecflavors,
|
|
oep->ex_defsecflavors, ep->ex_defnumsecflavors) != 0))
|
|
return (1);
|
|
|
|
/* Now, check all the groups. */
|
|
for (ogrp = oep->ex_grphead; ogrp != NULL; ogrp = ogrp->gr_next)
|
|
ogrp->gr_flag = 0;
|
|
for (grp = ep->ex_grphead; grp != NULL; grp = grp->gr_next) {
|
|
for (ogrp = oep->ex_grphead; ogrp != NULL; ogrp =
|
|
ogrp->gr_next)
|
|
if ((ogrp->gr_flag & GR_FND) == 0 &&
|
|
grp->gr_numsecflavors == ogrp->gr_numsecflavors &&
|
|
grp->gr_exflags == ogrp->gr_exflags &&
|
|
compare_cred(&grp->gr_anon, &ogrp->gr_anon) == 0 &&
|
|
compare_secflavor(grp->gr_secflavors,
|
|
ogrp->gr_secflavors, grp->gr_numsecflavors) == 0)
|
|
break;
|
|
if (ogrp != NULL)
|
|
ogrp->gr_flag |= GR_FND;
|
|
else
|
|
return (1);
|
|
}
|
|
for (ogrp = oep->ex_grphead; ogrp != NULL; ogrp = ogrp->gr_next)
|
|
if ((ogrp->gr_flag & GR_FND) == 0)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This algorithm compares two arrays of "n" items. It returns 0 if they are
|
|
* the "same" and 1 otherwise. Although suboptimal, it is always safe to
|
|
* return 1, which makes compare_nmount_export() reload the exports entry.
|
|
* "same" refers to having the same set of values in the two arrays.
|
|
* The arrays are in no particular order and duplicates (multiple entries
|
|
* in an array with the same value) is allowed.
|
|
* The algorithm is inefficient, but the common case of indentical arrays is
|
|
* handled first and "n" is normally fairly small.
|
|
* Since the two functions need the same algorithm but for arrays of
|
|
* different types (gid_t vs int), this is done as a macro.
|
|
*/
|
|
#define COMPARE_ARRAYS(a1, a2, n) \
|
|
do { \
|
|
int fnd, fndarray[(n)], i, j; \
|
|
/* Handle common case of identical arrays. */ \
|
|
for (i = 0; i < (n); i++) \
|
|
if ((a1)[i] != (a2)[i]) \
|
|
break; \
|
|
if (i == (n)) \
|
|
return (0); \
|
|
for (i = 0; i < (n); i++) \
|
|
fndarray[i] = 0; \
|
|
for (i = 0; i < (n); i++) { \
|
|
fnd = 0; \
|
|
for (j = 0; j < (n); j++) { \
|
|
if ((a1)[i] == (a2)[j]) { \
|
|
fndarray[j] = 1; \
|
|
fnd = 1; \
|
|
} \
|
|
} \
|
|
if (fnd == 0) \
|
|
return (1); \
|
|
} \
|
|
for (i = 0; i < (n); i++) \
|
|
if (fndarray[i] == 0) \
|
|
return (1); \
|
|
return (0); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Compare two struct expcred's. Return 0 if the same and 1 otherwise.
|
|
*/
|
|
static int
|
|
compare_cred(struct expcred *cr0, struct expcred *cr1)
|
|
{
|
|
|
|
if (cr0->cr_uid != cr1->cr_uid || cr0->cr_ngroups != cr1->cr_ngroups)
|
|
return (1);
|
|
|
|
COMPARE_ARRAYS(cr0->cr_groups, cr1->cr_groups, cr0->cr_ngroups);
|
|
}
|
|
|
|
/*
|
|
* Compare two lists of security flavors. Return 0 if the same and 1 otherwise.
|
|
*/
|
|
static int
|
|
compare_secflavor(int *sec1, int *sec2, int nsec)
|
|
{
|
|
|
|
COMPARE_ARRAYS(sec1, sec2, nsec);
|
|
}
|
|
|
|
/*
|
|
* Delete an exports entry.
|
|
*/
|
|
static void
|
|
delete_export(struct iovec *iov, int iovlen, struct statfs *fsp, char *errmsg)
|
|
{
|
|
struct xvfsconf vfc;
|
|
|
|
if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) {
|
|
syslog(LOG_ERR, "getvfsbyname() failed for %s",
|
|
fsp->f_fstypename);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We do not need to delete "export" flag from
|
|
* filesystems that do not have it set.
|
|
*/
|
|
if (!(fsp->f_flags & MNT_EXPORTED))
|
|
return;
|
|
/*
|
|
* Do not delete export for network filesystem by
|
|
* passing "export" arg to nmount().
|
|
* It only makes sense to do this for local filesystems.
|
|
*/
|
|
if (vfc.vfc_flags & VFCF_NETWORK)
|
|
return;
|
|
|
|
iov[1].iov_base = fsp->f_fstypename;
|
|
iov[1].iov_len = strlen(fsp->f_fstypename) + 1;
|
|
iov[3].iov_base = fsp->f_mntonname;
|
|
iov[3].iov_len = strlen(fsp->f_mntonname) + 1;
|
|
iov[5].iov_base = fsp->f_mntfromname;
|
|
iov[5].iov_len = strlen(fsp->f_mntfromname) + 1;
|
|
errmsg[0] = '\0';
|
|
|
|
/*
|
|
* EXDEV is returned when path exists but is not a
|
|
* mount point. May happens if raced with unmount.
|
|
*/
|
|
if (nmount(iov, iovlen, fsp->f_flags) < 0 && errno != ENOENT &&
|
|
errno != ENOTSUP && errno != EXDEV) {
|
|
syslog(LOG_ERR,
|
|
"can't delete exports for %s: %m %s",
|
|
fsp->f_mntonname, errmsg);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate an export list element
|
|
*/
|
|
static struct exportlist *
|
|
get_exp(void)
|
|
{
|
|
struct exportlist *ep;
|
|
|
|
ep = (struct exportlist *)calloc(1, sizeof (struct exportlist));
|
|
if (ep == (struct exportlist *)NULL)
|
|
out_of_mem();
|
|
return (ep);
|
|
}
|
|
|
|
/*
|
|
* Allocate a group list element
|
|
*/
|
|
static struct grouplist *
|
|
get_grp(void)
|
|
{
|
|
struct grouplist *gp;
|
|
|
|
gp = (struct grouplist *)calloc(1, sizeof (struct grouplist));
|
|
if (gp == (struct grouplist *)NULL)
|
|
out_of_mem();
|
|
return (gp);
|
|
}
|
|
|
|
/*
|
|
* Clean up upon an error in get_exportlist().
|
|
*/
|
|
static void
|
|
getexp_err(struct exportlist *ep, struct grouplist *grp, const char *reason)
|
|
{
|
|
struct grouplist *tgrp;
|
|
|
|
if (!(opt_flags & OP_QUIET)) {
|
|
if (reason != NULL)
|
|
syslog(LOG_ERR, "bad exports list line '%s': %s", line,
|
|
reason);
|
|
else
|
|
syslog(LOG_ERR, "bad exports list line '%s'", line);
|
|
}
|
|
if (ep && (ep->ex_flag & EX_LINKED) == 0)
|
|
free_exp(ep);
|
|
while (grp) {
|
|
tgrp = grp;
|
|
grp = grp->gr_next;
|
|
free_grp(tgrp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Search the export list for a matching fs.
|
|
*/
|
|
static struct exportlist *
|
|
ex_search(fsid_t *fsid, struct exportlisthead *exhp)
|
|
{
|
|
struct exportlist *ep;
|
|
uint32_t i;
|
|
|
|
i = EXPHASH(fsid);
|
|
SLIST_FOREACH(ep, &exhp[i], entries) {
|
|
if (fsidcmp(&ep->ex_fs, fsid) == 0)
|
|
return (ep);
|
|
}
|
|
|
|
return (ep);
|
|
}
|
|
|
|
/*
|
|
* Add a directory path to the list.
|
|
*/
|
|
static char *
|
|
add_expdir(struct dirlist **dpp, char *cp, int len)
|
|
{
|
|
struct dirlist *dp;
|
|
|
|
dp = malloc(sizeof (struct dirlist));
|
|
if (dp == (struct dirlist *)NULL)
|
|
out_of_mem();
|
|
dp->dp_left = *dpp;
|
|
dp->dp_right = (struct dirlist *)NULL;
|
|
dp->dp_flag = 0;
|
|
dp->dp_hosts = (struct hostlist *)NULL;
|
|
dp->dp_dirp = strndup(cp, len);
|
|
if (dp->dp_dirp == NULL)
|
|
out_of_mem();
|
|
*dpp = dp;
|
|
return (dp->dp_dirp);
|
|
}
|
|
|
|
/*
|
|
* Hang the dir list element off the dirpath binary tree as required
|
|
* and update the entry for host.
|
|
*/
|
|
static void
|
|
hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
|
|
int flags, struct expcred *anoncrp, uint64_t exflags)
|
|
{
|
|
struct hostlist *hp;
|
|
struct dirlist *dp2;
|
|
|
|
if (flags & OP_ALLDIRS) {
|
|
if (ep->ex_defdir)
|
|
free((caddr_t)dp);
|
|
else
|
|
ep->ex_defdir = dp;
|
|
if (grp == (struct grouplist *)NULL) {
|
|
ep->ex_flag |= EX_DEFSET;
|
|
ep->ex_defdir->dp_flag |= DP_DEFSET;
|
|
/* Save the default security flavors list. */
|
|
ep->ex_defnumsecflavors = ep->ex_numsecflavors;
|
|
if (ep->ex_numsecflavors > 0)
|
|
memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
|
|
sizeof(ep->ex_secflavors));
|
|
cp_cred(&ep->ex_defanon, anoncrp);
|
|
ep->ex_defexflags = exflags;
|
|
} else while (grp) {
|
|
hp = get_ht();
|
|
hp->ht_grp = grp;
|
|
hp->ht_next = ep->ex_defdir->dp_hosts;
|
|
ep->ex_defdir->dp_hosts = hp;
|
|
/* Save the security flavors list for this host set. */
|
|
grp->gr_numsecflavors = ep->ex_numsecflavors;
|
|
if (ep->ex_numsecflavors > 0)
|
|
memcpy(grp->gr_secflavors, ep->ex_secflavors,
|
|
sizeof(ep->ex_secflavors));
|
|
grp = grp->gr_next;
|
|
}
|
|
} else {
|
|
|
|
/*
|
|
* Loop through the directories adding them to the tree.
|
|
*/
|
|
while (dp) {
|
|
dp2 = dp->dp_left;
|
|
add_dlist(&ep->ex_dirl, dp, grp, flags, ep, anoncrp,
|
|
exflags);
|
|
dp = dp2;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Traverse the binary tree either updating a node that is already there
|
|
* for the new directory or adding the new node.
|
|
*/
|
|
static void
|
|
add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
|
|
int flags, struct exportlist *ep, struct expcred *anoncrp,
|
|
uint64_t exflags)
|
|
{
|
|
struct dirlist *dp;
|
|
struct hostlist *hp;
|
|
int cmp;
|
|
|
|
dp = *dpp;
|
|
if (dp) {
|
|
cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
|
|
if (cmp > 0) {
|
|
add_dlist(&dp->dp_left, newdp, grp, flags, ep, anoncrp,
|
|
exflags);
|
|
return;
|
|
} else if (cmp < 0) {
|
|
add_dlist(&dp->dp_right, newdp, grp, flags, ep, anoncrp,
|
|
exflags);
|
|
return;
|
|
} else
|
|
free((caddr_t)newdp);
|
|
} else {
|
|
dp = newdp;
|
|
dp->dp_left = (struct dirlist *)NULL;
|
|
*dpp = dp;
|
|
}
|
|
if (grp) {
|
|
|
|
/*
|
|
* Hang all of the host(s) off of the directory point.
|
|
*/
|
|
do {
|
|
hp = get_ht();
|
|
hp->ht_grp = grp;
|
|
hp->ht_next = dp->dp_hosts;
|
|
dp->dp_hosts = hp;
|
|
/* Save the security flavors list for this host set. */
|
|
grp->gr_numsecflavors = ep->ex_numsecflavors;
|
|
if (ep->ex_numsecflavors > 0)
|
|
memcpy(grp->gr_secflavors, ep->ex_secflavors,
|
|
sizeof(ep->ex_secflavors));
|
|
grp = grp->gr_next;
|
|
} while (grp);
|
|
} else {
|
|
ep->ex_flag |= EX_DEFSET;
|
|
dp->dp_flag |= DP_DEFSET;
|
|
/* Save the default security flavors list. */
|
|
ep->ex_defnumsecflavors = ep->ex_numsecflavors;
|
|
if (ep->ex_numsecflavors > 0)
|
|
memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
|
|
sizeof(ep->ex_secflavors));
|
|
cp_cred(&ep->ex_defanon, anoncrp);
|
|
ep->ex_defexflags = exflags;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Search for a dirpath on the export point.
|
|
*/
|
|
static struct dirlist *
|
|
dirp_search(struct dirlist *dp, char *dirp)
|
|
{
|
|
int cmp;
|
|
|
|
if (dp) {
|
|
cmp = strcmp(dp->dp_dirp, dirp);
|
|
if (cmp > 0)
|
|
return (dirp_search(dp->dp_left, dirp));
|
|
else if (cmp < 0)
|
|
return (dirp_search(dp->dp_right, dirp));
|
|
else
|
|
return (dp);
|
|
}
|
|
return (dp);
|
|
}
|
|
|
|
/*
|
|
* Scan for a host match in a directory tree.
|
|
*/
|
|
static int
|
|
chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
|
|
int *hostsetp, int *numsecflavors, int **secflavorsp)
|
|
{
|
|
struct hostlist *hp;
|
|
struct grouplist *grp;
|
|
struct addrinfo *ai;
|
|
|
|
if (dp) {
|
|
if (dp->dp_flag & DP_DEFSET)
|
|
*defsetp = dp->dp_flag;
|
|
hp = dp->dp_hosts;
|
|
while (hp) {
|
|
grp = hp->ht_grp;
|
|
switch (grp->gr_type) {
|
|
case GT_HOST:
|
|
ai = grp->gr_ptr.gt_addrinfo;
|
|
for (; ai; ai = ai->ai_next) {
|
|
if (!sacmp(ai->ai_addr, saddr, NULL)) {
|
|
*hostsetp =
|
|
(hp->ht_flag | DP_HOSTSET);
|
|
if (numsecflavors != NULL) {
|
|
*numsecflavors =
|
|
grp->gr_numsecflavors;
|
|
*secflavorsp =
|
|
grp->gr_secflavors;
|
|
}
|
|
return (1);
|
|
}
|
|
}
|
|
break;
|
|
case GT_NET:
|
|
if (!sacmp(saddr, (struct sockaddr *)
|
|
&grp->gr_ptr.gt_net.nt_net,
|
|
(struct sockaddr *)
|
|
&grp->gr_ptr.gt_net.nt_mask)) {
|
|
*hostsetp = (hp->ht_flag | DP_HOSTSET);
|
|
if (numsecflavors != NULL) {
|
|
*numsecflavors =
|
|
grp->gr_numsecflavors;
|
|
*secflavorsp =
|
|
grp->gr_secflavors;
|
|
}
|
|
return (1);
|
|
}
|
|
break;
|
|
}
|
|
hp = hp->ht_next;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Scan tree for a host that matches the address.
|
|
*/
|
|
static int
|
|
scan_tree(struct dirlist *dp, struct sockaddr *saddr)
|
|
{
|
|
int defset, hostset;
|
|
|
|
if (dp) {
|
|
if (scan_tree(dp->dp_left, saddr))
|
|
return (1);
|
|
if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL))
|
|
return (1);
|
|
if (scan_tree(dp->dp_right, saddr))
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Traverse the dirlist tree and free it up.
|
|
*/
|
|
static void
|
|
free_dir(struct dirlist *dp)
|
|
{
|
|
|
|
if (dp) {
|
|
free_dir(dp->dp_left);
|
|
free_dir(dp->dp_right);
|
|
free_host(dp->dp_hosts);
|
|
free(dp->dp_dirp);
|
|
free(dp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse a colon separated list of security flavors
|
|
*/
|
|
static int
|
|
parsesec(char *seclist, struct exportlist *ep)
|
|
{
|
|
char *cp, savedc;
|
|
int flavor;
|
|
|
|
ep->ex_numsecflavors = 0;
|
|
for (;;) {
|
|
cp = strchr(seclist, ':');
|
|
if (cp) {
|
|
savedc = *cp;
|
|
*cp = '\0';
|
|
}
|
|
|
|
if (!strcmp(seclist, "sys"))
|
|
flavor = AUTH_SYS;
|
|
else if (!strcmp(seclist, "krb5"))
|
|
flavor = RPCSEC_GSS_KRB5;
|
|
else if (!strcmp(seclist, "krb5i"))
|
|
flavor = RPCSEC_GSS_KRB5I;
|
|
else if (!strcmp(seclist, "krb5p"))
|
|
flavor = RPCSEC_GSS_KRB5P;
|
|
else {
|
|
if (cp)
|
|
*cp = savedc;
|
|
syslog(LOG_ERR, "bad sec flavor: %s", seclist);
|
|
return (1);
|
|
}
|
|
if (ep->ex_numsecflavors == MAXSECFLAVORS) {
|
|
if (cp)
|
|
*cp = savedc;
|
|
syslog(LOG_ERR, "too many sec flavors: %s", seclist);
|
|
return (1);
|
|
}
|
|
ep->ex_secflavors[ep->ex_numsecflavors] = flavor;
|
|
ep->ex_numsecflavors++;
|
|
if (cp) {
|
|
*cp = savedc;
|
|
seclist = cp + 1;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Parse the option string and update fields.
|
|
* Option arguments may either be -<option>=<value> or
|
|
* -<option> <value>
|
|
*/
|
|
static int
|
|
do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
|
|
int *has_hostp, uint64_t *exflagsp, struct expcred *cr)
|
|
{
|
|
char *cpoptarg, *cpoptend;
|
|
char *cp, *endcp, *cpopt, savedc, savedc2;
|
|
int allflag, usedarg;
|
|
|
|
savedc2 = '\0';
|
|
cpopt = *cpp;
|
|
cpopt++;
|
|
cp = *endcpp;
|
|
savedc = *cp;
|
|
*cp = '\0';
|
|
while (cpopt && *cpopt) {
|
|
allflag = 1;
|
|
usedarg = -2;
|
|
if ((cpoptend = strchr(cpopt, ','))) {
|
|
*cpoptend++ = '\0';
|
|
if ((cpoptarg = strchr(cpopt, '=')))
|
|
*cpoptarg++ = '\0';
|
|
} else {
|
|
if ((cpoptarg = strchr(cpopt, '=')))
|
|
*cpoptarg++ = '\0';
|
|
else {
|
|
*cp = savedc;
|
|
nextfield(&cp, &endcp);
|
|
**endcpp = '\0';
|
|
if (endcp > cp && *cp != '-') {
|
|
cpoptarg = cp;
|
|
savedc2 = *endcp;
|
|
*endcp = '\0';
|
|
usedarg = 0;
|
|
}
|
|
}
|
|
}
|
|
if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
|
|
*exflagsp |= MNT_EXRDONLY;
|
|
} else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
|
|
!(allflag = strcmp(cpopt, "mapall")) ||
|
|
!strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
|
|
usedarg++;
|
|
parsecred(cpoptarg, cr);
|
|
if (allflag == 0) {
|
|
*exflagsp |= MNT_EXPORTANON;
|
|
opt_flags |= OP_MAPALL;
|
|
} else
|
|
opt_flags |= OP_MAPROOT;
|
|
} else if (cpoptarg && (!strcmp(cpopt, "mask") ||
|
|
!strcmp(cpopt, "m"))) {
|
|
if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
|
|
syslog(LOG_ERR, "bad mask: %s", cpoptarg);
|
|
return (1);
|
|
}
|
|
usedarg++;
|
|
opt_flags |= OP_MASK;
|
|
} else if (cpoptarg && (!strcmp(cpopt, "network") ||
|
|
!strcmp(cpopt, "n"))) {
|
|
if (strchr(cpoptarg, '/') != NULL) {
|
|
if (debug)
|
|
fprintf(stderr, "setting OP_MASKLEN\n");
|
|
opt_flags |= OP_MASKLEN;
|
|
}
|
|
if (grp->gr_type != GT_NULL) {
|
|
syslog(LOG_ERR, "network/host conflict");
|
|
return (1);
|
|
} else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
|
|
syslog(LOG_ERR, "bad net: %s", cpoptarg);
|
|
return (1);
|
|
}
|
|
grp->gr_type = GT_NET;
|
|
*has_hostp = 1;
|
|
usedarg++;
|
|
opt_flags |= OP_NET;
|
|
} else if (!strcmp(cpopt, "alldirs")) {
|
|
opt_flags |= OP_ALLDIRS;
|
|
} else if (!strcmp(cpopt, "public")) {
|
|
*exflagsp |= MNT_EXPUBLIC;
|
|
} else if (!strcmp(cpopt, "webnfs")) {
|
|
*exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
|
|
opt_flags |= OP_MAPALL;
|
|
} else if (cpoptarg && !strcmp(cpopt, "index")) {
|
|
ep->ex_indexfile = strdup(cpoptarg);
|
|
} else if (!strcmp(cpopt, "quiet")) {
|
|
opt_flags |= OP_QUIET;
|
|
} else if (cpoptarg && !strcmp(cpopt, "sec")) {
|
|
if (parsesec(cpoptarg, ep))
|
|
return (1);
|
|
opt_flags |= OP_SEC;
|
|
usedarg++;
|
|
} else if (!strcmp(cpopt, "tls")) {
|
|
*exflagsp |= MNT_EXTLS;
|
|
} else if (!strcmp(cpopt, "tlscert")) {
|
|
*exflagsp |= (MNT_EXTLS | MNT_EXTLSCERT);
|
|
} else if (!strcmp(cpopt, "tlscertuser")) {
|
|
*exflagsp |= (MNT_EXTLS | MNT_EXTLSCERT |
|
|
MNT_EXTLSCERTUSER);
|
|
} else {
|
|
syslog(LOG_ERR, "bad opt %s", cpopt);
|
|
return (1);
|
|
}
|
|
if (usedarg >= 0) {
|
|
*endcp = savedc2;
|
|
**endcpp = savedc;
|
|
if (usedarg > 0) {
|
|
*cpp = cp;
|
|
*endcpp = endcp;
|
|
}
|
|
return (0);
|
|
}
|
|
cpopt = cpoptend;
|
|
}
|
|
**endcpp = savedc;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Translate a character string to the corresponding list of network
|
|
* addresses for a hostname.
|
|
*/
|
|
static int
|
|
get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
|
|
{
|
|
struct grouplist *checkgrp;
|
|
struct addrinfo *ai, *tai, hints;
|
|
int ecode;
|
|
char host[NI_MAXHOST];
|
|
|
|
if (grp->gr_type != GT_NULL) {
|
|
syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
|
|
return (1);
|
|
}
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_flags = AI_CANONNAME;
|
|
hints.ai_protocol = IPPROTO_UDP;
|
|
ecode = getaddrinfo(cp, NULL, &hints, &ai);
|
|
if (ecode != 0) {
|
|
syslog(LOG_ERR,"can't get address info for host %s", cp);
|
|
return 1;
|
|
}
|
|
grp->gr_ptr.gt_addrinfo = ai;
|
|
while (ai != NULL) {
|
|
if (ai->ai_canonname == NULL) {
|
|
if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
|
|
sizeof host, NULL, 0, NI_NUMERICHOST) != 0)
|
|
strlcpy(host, "?", sizeof(host));
|
|
ai->ai_canonname = strdup(host);
|
|
ai->ai_flags |= AI_CANONNAME;
|
|
}
|
|
if (debug)
|
|
fprintf(stderr, "got host %s\n", ai->ai_canonname);
|
|
/*
|
|
* Sanity check: make sure we don't already have an entry
|
|
* for this host in the grouplist.
|
|
*/
|
|
for (checkgrp = tgrp; checkgrp != NULL;
|
|
checkgrp = checkgrp->gr_next) {
|
|
if (checkgrp->gr_type != GT_HOST)
|
|
continue;
|
|
for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
|
|
tai = tai->ai_next) {
|
|
if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0)
|
|
continue;
|
|
if (debug)
|
|
fprintf(stderr,
|
|
"ignoring duplicate host %s\n",
|
|
ai->ai_canonname);
|
|
grp->gr_type = GT_IGNORE;
|
|
return (0);
|
|
}
|
|
}
|
|
ai = ai->ai_next;
|
|
}
|
|
grp->gr_type = GT_HOST;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Free up an exports list component
|
|
*/
|
|
static void
|
|
free_exp(struct exportlist *ep)
|
|
{
|
|
struct grouplist *grp, *tgrp;
|
|
|
|
if (ep->ex_defdir) {
|
|
free_host(ep->ex_defdir->dp_hosts);
|
|
free((caddr_t)ep->ex_defdir);
|
|
}
|
|
if (ep->ex_fsdir)
|
|
free(ep->ex_fsdir);
|
|
if (ep->ex_indexfile)
|
|
free(ep->ex_indexfile);
|
|
free_dir(ep->ex_dirl);
|
|
grp = ep->ex_grphead;
|
|
while (grp) {
|
|
tgrp = grp;
|
|
grp = grp->gr_next;
|
|
free_grp(tgrp);
|
|
}
|
|
if (ep->ex_defanon.cr_groups != ep->ex_defanon.cr_smallgrps)
|
|
free(ep->ex_defanon.cr_groups);
|
|
free((caddr_t)ep);
|
|
}
|
|
|
|
/*
|
|
* Free up the v4root exports.
|
|
*/
|
|
static void
|
|
free_v4rootexp(void)
|
|
{
|
|
|
|
if (v4root_ep != NULL) {
|
|
free_exp(v4root_ep);
|
|
v4root_ep = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Free hosts.
|
|
*/
|
|
static void
|
|
free_host(struct hostlist *hp)
|
|
{
|
|
struct hostlist *hp2;
|
|
|
|
while (hp) {
|
|
hp2 = hp;
|
|
hp = hp->ht_next;
|
|
free((caddr_t)hp2);
|
|
}
|
|
}
|
|
|
|
static struct hostlist *
|
|
get_ht(void)
|
|
{
|
|
struct hostlist *hp;
|
|
|
|
hp = (struct hostlist *)malloc(sizeof (struct hostlist));
|
|
if (hp == (struct hostlist *)NULL)
|
|
out_of_mem();
|
|
hp->ht_next = (struct hostlist *)NULL;
|
|
hp->ht_flag = 0;
|
|
return (hp);
|
|
}
|
|
|
|
/*
|
|
* Out of memory, fatal
|
|
*/
|
|
static void
|
|
out_of_mem(void)
|
|
{
|
|
|
|
syslog(LOG_ERR, "out of memory");
|
|
exit(2);
|
|
}
|
|
|
|
/*
|
|
* Call do_mount() from the struct exportlist, for each case needed.
|
|
*/
|
|
static int
|
|
do_export_mount(struct exportlist *ep, struct statfs *fsp)
|
|
{
|
|
struct grouplist *grp, defgrp;
|
|
int ret;
|
|
size_t dirlen;
|
|
|
|
LOGDEBUG("do_export_mount=%s", ep->ex_fsdir);
|
|
dirlen = strlen(ep->ex_fsdir);
|
|
if ((ep->ex_flag & EX_DEFSET) != 0) {
|
|
defgrp.gr_type = GT_DEFAULT;
|
|
defgrp.gr_next = NULL;
|
|
/* We have an entry for all other hosts/nets. */
|
|
LOGDEBUG("ex_defexflags=0x%jx", (uintmax_t)ep->ex_defexflags);
|
|
ret = do_mount(ep, &defgrp, ep->ex_defexflags, &ep->ex_defanon,
|
|
ep->ex_fsdir, dirlen, fsp, ep->ex_defnumsecflavors,
|
|
ep->ex_defsecflavors);
|
|
if (ret != 0)
|
|
return (ret);
|
|
}
|
|
|
|
/* Do a mount for each group. */
|
|
grp = ep->ex_grphead;
|
|
while (grp != NULL) {
|
|
LOGDEBUG("do mount gr_type=0x%x gr_exflags=0x%jx",
|
|
grp->gr_type, (uintmax_t)grp->gr_exflags);
|
|
ret = do_mount(ep, grp, grp->gr_exflags, &grp->gr_anon,
|
|
ep->ex_fsdir, dirlen, fsp, grp->gr_numsecflavors,
|
|
grp->gr_secflavors);
|
|
if (ret != 0)
|
|
return (ret);
|
|
grp = grp->gr_next;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Do the nmount() syscall with the update flag to push the export info into
|
|
* the kernel.
|
|
*/
|
|
static int
|
|
do_mount(struct exportlist *ep, struct grouplist *grp, uint64_t exflags,
|
|
struct expcred *anoncrp, char *dirp, int dirplen, struct statfs *fsb,
|
|
int numsecflavors, int *secflavors)
|
|
{
|
|
struct statfs fsb1;
|
|
struct addrinfo *ai;
|
|
struct export_args *eap;
|
|
char errmsg[255];
|
|
char *cp;
|
|
int done;
|
|
char savedc;
|
|
struct iovec *iov;
|
|
int i, iovlen;
|
|
int ret;
|
|
struct nfsex_args nfsea;
|
|
|
|
eap = &nfsea.export;
|
|
|
|
cp = NULL;
|
|
savedc = '\0';
|
|
iov = NULL;
|
|
iovlen = 0;
|
|
ret = 0;
|
|
|
|
bzero(eap, sizeof (struct export_args));
|
|
bzero(errmsg, sizeof(errmsg));
|
|
eap->ex_flags = exflags;
|
|
eap->ex_uid = anoncrp->cr_uid;
|
|
eap->ex_ngroups = anoncrp->cr_ngroups;
|
|
if (eap->ex_ngroups > 0) {
|
|
eap->ex_groups = malloc(eap->ex_ngroups * sizeof(gid_t));
|
|
memcpy(eap->ex_groups, anoncrp->cr_groups, eap->ex_ngroups *
|
|
sizeof(gid_t));
|
|
}
|
|
LOGDEBUG("do_mount exflags=0x%jx", (uintmax_t)exflags);
|
|
eap->ex_indexfile = ep->ex_indexfile;
|
|
if (grp->gr_type == GT_HOST)
|
|
ai = grp->gr_ptr.gt_addrinfo;
|
|
else
|
|
ai = NULL;
|
|
eap->ex_numsecflavors = numsecflavors;
|
|
LOGDEBUG("do_mount numsec=%d", numsecflavors);
|
|
for (i = 0; i < eap->ex_numsecflavors; i++)
|
|
eap->ex_secflavors[i] = secflavors[i];
|
|
if (eap->ex_numsecflavors == 0) {
|
|
eap->ex_numsecflavors = 1;
|
|
eap->ex_secflavors[0] = AUTH_SYS;
|
|
}
|
|
done = FALSE;
|
|
|
|
if (v4root_phase == 0) {
|
|
build_iovec(&iov, &iovlen, "fstype", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "fspath", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "from", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "update", NULL, 0);
|
|
build_iovec(&iov, &iovlen, "export", eap,
|
|
sizeof (struct export_args));
|
|
build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
|
|
}
|
|
|
|
while (!done) {
|
|
switch (grp->gr_type) {
|
|
case GT_HOST:
|
|
if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
|
|
goto skip;
|
|
eap->ex_addr = ai->ai_addr;
|
|
eap->ex_addrlen = ai->ai_addrlen;
|
|
eap->ex_masklen = 0;
|
|
break;
|
|
case GT_NET:
|
|
if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 &&
|
|
have_v6 == 0)
|
|
goto skip;
|
|
eap->ex_addr =
|
|
(struct sockaddr *)&grp->gr_ptr.gt_net.nt_net;
|
|
eap->ex_addrlen =
|
|
((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len;
|
|
eap->ex_mask =
|
|
(struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask;
|
|
eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len;
|
|
break;
|
|
case GT_DEFAULT:
|
|
eap->ex_addr = NULL;
|
|
eap->ex_addrlen = 0;
|
|
eap->ex_mask = NULL;
|
|
eap->ex_masklen = 0;
|
|
break;
|
|
case GT_IGNORE:
|
|
ret = 0;
|
|
goto error_exit;
|
|
break;
|
|
default:
|
|
syslog(LOG_ERR, "bad grouptype");
|
|
if (cp)
|
|
*cp = savedc;
|
|
ret = 1;
|
|
goto error_exit;
|
|
}
|
|
|
|
/*
|
|
* For V4:, use the nfssvc() syscall, instead of mount().
|
|
*/
|
|
if (v4root_phase == 2) {
|
|
nfsea.fspec = v4root_dirpath;
|
|
if (nfssvc(NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT,
|
|
(caddr_t)&nfsea) < 0) {
|
|
syslog(LOG_ERR, "Exporting V4: failed");
|
|
ret = 2;
|
|
goto error_exit;
|
|
}
|
|
} else {
|
|
/*
|
|
* XXX:
|
|
* Maybe I should just use the fsb->f_mntonname path
|
|
* instead of looping back up the dirp to the mount
|
|
* point??
|
|
* Also, needs to know how to export all types of local
|
|
* exportable filesystems and not just "ufs".
|
|
*/
|
|
iov[1].iov_base = fsb->f_fstypename; /* "fstype" */
|
|
iov[1].iov_len = strlen(fsb->f_fstypename) + 1;
|
|
iov[3].iov_base = fsb->f_mntonname; /* "fspath" */
|
|
iov[3].iov_len = strlen(fsb->f_mntonname) + 1;
|
|
iov[5].iov_base = fsb->f_mntfromname; /* "from" */
|
|
iov[5].iov_len = strlen(fsb->f_mntfromname) + 1;
|
|
errmsg[0] = '\0';
|
|
|
|
while (nmount(iov, iovlen, fsb->f_flags) < 0) {
|
|
if (cp)
|
|
*cp-- = savedc;
|
|
else
|
|
cp = dirp + dirplen - 1;
|
|
if (opt_flags & OP_QUIET) {
|
|
ret = 1;
|
|
goto error_exit;
|
|
}
|
|
if (errno == EPERM) {
|
|
if (debug)
|
|
warnx("can't change attributes for %s: %s",
|
|
dirp, errmsg);
|
|
syslog(LOG_ERR,
|
|
"can't change attributes for %s: %s",
|
|
dirp, errmsg);
|
|
ret = 1;
|
|
goto error_exit;
|
|
}
|
|
if (opt_flags & OP_ALLDIRS) {
|
|
if (errno == EINVAL)
|
|
syslog(LOG_ERR,
|
|
"-alldirs requested but %s is not a filesystem mountpoint",
|
|
dirp);
|
|
else
|
|
syslog(LOG_ERR,
|
|
"could not remount %s: %m",
|
|
dirp);
|
|
ret = 1;
|
|
goto error_exit;
|
|
}
|
|
/* back up over the last component */
|
|
while (cp > dirp && *cp == '/')
|
|
cp--;
|
|
while (cp > dirp && *(cp - 1) != '/')
|
|
cp--;
|
|
if (cp == dirp) {
|
|
if (debug)
|
|
warnx("mnt unsucc");
|
|
syslog(LOG_ERR, "can't export %s %s",
|
|
dirp, errmsg);
|
|
ret = 1;
|
|
goto error_exit;
|
|
}
|
|
savedc = *cp;
|
|
*cp = '\0';
|
|
/*
|
|
* Check that we're still on the same
|
|
* filesystem.
|
|
*/
|
|
if (statfs(dirp, &fsb1) != 0 ||
|
|
fsidcmp(&fsb1.f_fsid, &fsb->f_fsid) != 0) {
|
|
*cp = savedc;
|
|
syslog(LOG_ERR,
|
|
"can't export %s %s", dirp,
|
|
errmsg);
|
|
ret = 1;
|
|
goto error_exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For the experimental server:
|
|
* If this is the public directory, get the file handle
|
|
* and load it into the kernel via the nfssvc() syscall.
|
|
*/
|
|
if ((exflags & MNT_EXPUBLIC) != 0) {
|
|
fhandle_t fh;
|
|
char *public_name;
|
|
|
|
if (eap->ex_indexfile != NULL)
|
|
public_name = eap->ex_indexfile;
|
|
else
|
|
public_name = dirp;
|
|
if (getfh(public_name, &fh) < 0)
|
|
syslog(LOG_ERR,
|
|
"Can't get public fh for %s", public_name);
|
|
else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0)
|
|
syslog(LOG_ERR,
|
|
"Can't set public fh for %s", public_name);
|
|
else {
|
|
has_publicfh = 1;
|
|
has_set_publicfh = 1;
|
|
ep->ex_flag |= EX_PUBLICFH;
|
|
}
|
|
}
|
|
skip:
|
|
if (ai != NULL)
|
|
ai = ai->ai_next;
|
|
if (ai == NULL)
|
|
done = TRUE;
|
|
}
|
|
if (cp)
|
|
*cp = savedc;
|
|
error_exit:
|
|
free(eap->ex_groups);
|
|
/* free strings allocated by strdup() in getmntopts.c */
|
|
if (iov != NULL) {
|
|
free(iov[0].iov_base); /* fstype */
|
|
free(iov[2].iov_base); /* fspath */
|
|
free(iov[4].iov_base); /* from */
|
|
free(iov[6].iov_base); /* update */
|
|
free(iov[8].iov_base); /* export */
|
|
free(iov[10].iov_base); /* errmsg */
|
|
|
|
/* free iov, allocated by realloc() */
|
|
free(iov);
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Translate a net address.
|
|
*
|
|
* If `maskflg' is nonzero, then `cp' is a netmask, not a network address.
|
|
*/
|
|
static int
|
|
get_net(char *cp, struct netmsk *net, int maskflg)
|
|
{
|
|
struct netent *np = NULL;
|
|
char *name, *p, *prefp;
|
|
struct sockaddr_in sin;
|
|
struct sockaddr *sa = NULL;
|
|
struct addrinfo hints, *ai = NULL;
|
|
char netname[NI_MAXHOST];
|
|
long preflen;
|
|
|
|
p = prefp = NULL;
|
|
if ((opt_flags & OP_MASKLEN) && !maskflg) {
|
|
p = strchr(cp, '/');
|
|
*p = '\0';
|
|
prefp = p + 1;
|
|
}
|
|
|
|
/*
|
|
* Check for a numeric address first. We wish to avoid
|
|
* possible DNS lookups in getnetbyname().
|
|
*/
|
|
if (isxdigit(*cp) || *cp == ':') {
|
|
memset(&hints, 0, sizeof hints);
|
|
/* Ensure the mask and the network have the same family. */
|
|
if (maskflg && (opt_flags & OP_NET))
|
|
hints.ai_family = net->nt_net.ss_family;
|
|
else if (!maskflg && (opt_flags & OP_HAVEMASK))
|
|
hints.ai_family = net->nt_mask.ss_family;
|
|
else
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
|
|
sa = ai->ai_addr;
|
|
if (sa != NULL && ai->ai_family == AF_INET) {
|
|
/*
|
|
* The address in `cp' is really a network address, so
|
|
* use inet_network() to re-interpret this correctly.
|
|
* e.g. "127.1" means 127.1.0.0, not 127.0.0.1.
|
|
*/
|
|
bzero(&sin, sizeof sin);
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_len = sizeof sin;
|
|
sin.sin_addr = inet_makeaddr(inet_network(cp), 0);
|
|
if (debug)
|
|
fprintf(stderr, "get_net: v4 addr %s\n",
|
|
inet_ntoa(sin.sin_addr));
|
|
sa = (struct sockaddr *)&sin;
|
|
}
|
|
}
|
|
if (sa == NULL && (np = getnetbyname(cp)) != NULL) {
|
|
bzero(&sin, sizeof sin);
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_len = sizeof sin;
|
|
sin.sin_addr = inet_makeaddr(np->n_net, 0);
|
|
sa = (struct sockaddr *)&sin;
|
|
}
|
|
if (sa == NULL)
|
|
goto fail;
|
|
|
|
if (maskflg) {
|
|
/* The specified sockaddr is a mask. */
|
|
if (checkmask(sa) != 0)
|
|
goto fail;
|
|
bcopy(sa, &net->nt_mask, sa->sa_len);
|
|
opt_flags |= OP_HAVEMASK;
|
|
} else {
|
|
/* The specified sockaddr is a network address. */
|
|
bcopy(sa, &net->nt_net, sa->sa_len);
|
|
|
|
/* Get a network name for the export list. */
|
|
if (np) {
|
|
name = np->n_name;
|
|
} else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
|
|
NULL, 0, NI_NUMERICHOST) == 0) {
|
|
name = netname;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
if ((net->nt_name = strdup(name)) == NULL)
|
|
out_of_mem();
|
|
|
|
/*
|
|
* Extract a mask from either a "/<masklen>" suffix, or
|
|
* from the class of an IPv4 address.
|
|
*/
|
|
if (opt_flags & OP_MASKLEN) {
|
|
preflen = strtol(prefp, NULL, 10);
|
|
if (preflen < 0L || preflen == LONG_MAX)
|
|
goto fail;
|
|
bcopy(sa, &net->nt_mask, sa->sa_len);
|
|
if (makemask(&net->nt_mask, (int)preflen) != 0)
|
|
goto fail;
|
|
opt_flags |= OP_HAVEMASK;
|
|
*p = '/';
|
|
} else if (sa->sa_family == AF_INET &&
|
|
(opt_flags & OP_MASK) == 0) {
|
|
in_addr_t addr;
|
|
|
|
syslog(LOG_WARNING,
|
|
"WARNING: No mask specified for %s, "
|
|
"using out-of-date default", name);
|
|
addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr;
|
|
if (IN_CLASSA(addr))
|
|
preflen = 8;
|
|
else if (IN_CLASSB(addr))
|
|
preflen = 16;
|
|
else if (IN_CLASSC(addr))
|
|
preflen = 24;
|
|
else if (IN_CLASSD(addr)) /* XXX Multicast??? */
|
|
preflen = 28;
|
|
else
|
|
preflen = 32; /* XXX */
|
|
|
|
bcopy(sa, &net->nt_mask, sa->sa_len);
|
|
makemask(&net->nt_mask, (int)preflen);
|
|
opt_flags |= OP_HAVEMASK;
|
|
}
|
|
}
|
|
|
|
if (ai)
|
|
freeaddrinfo(ai);
|
|
return 0;
|
|
|
|
fail:
|
|
if (ai)
|
|
freeaddrinfo(ai);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Parse out the next white space separated field
|
|
*/
|
|
static void
|
|
nextfield(char **cp, char **endcp)
|
|
{
|
|
char *p;
|
|
char quot = 0;
|
|
|
|
p = *cp;
|
|
while (*p == ' ' || *p == '\t')
|
|
p++;
|
|
*cp = p;
|
|
while (*p != '\0') {
|
|
if (quot) {
|
|
if (*p == quot)
|
|
quot = 0;
|
|
} else {
|
|
if (*p == '\\' && *(p + 1) != '\0')
|
|
p++;
|
|
else if (*p == '\'' || *p == '"')
|
|
quot = *p;
|
|
else if (*p == ' ' || *p == '\t')
|
|
break;
|
|
}
|
|
p++;
|
|
};
|
|
*endcp = p;
|
|
}
|
|
|
|
/*
|
|
* Get an exports file line. Skip over blank lines and handle line
|
|
* continuations.
|
|
*/
|
|
static int
|
|
get_line(void)
|
|
{
|
|
char *p, *cp;
|
|
size_t len;
|
|
int totlen, cont_line;
|
|
|
|
/*
|
|
* Loop around ignoring blank lines and getting all continuation lines.
|
|
*/
|
|
p = line;
|
|
totlen = 0;
|
|
do {
|
|
if ((p = fgetln(exp_file, &len)) == NULL)
|
|
return (0);
|
|
cp = p + len - 1;
|
|
cont_line = 0;
|
|
while (cp >= p &&
|
|
(*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
|
|
if (*cp == '\\')
|
|
cont_line = 1;
|
|
cp--;
|
|
len--;
|
|
}
|
|
if (cont_line) {
|
|
*++cp = ' ';
|
|
len++;
|
|
}
|
|
if (linesize < len + totlen + 1) {
|
|
linesize = len + totlen + 1;
|
|
line = realloc(line, linesize);
|
|
if (line == NULL)
|
|
out_of_mem();
|
|
}
|
|
memcpy(line + totlen, p, len);
|
|
totlen += len;
|
|
line[totlen] = '\0';
|
|
} while (totlen == 0 || cont_line);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Parse a description of a credential.
|
|
*/
|
|
static void
|
|
parsecred(char *namelist, struct expcred *cr)
|
|
{
|
|
char *name;
|
|
int inpos;
|
|
char *names;
|
|
struct passwd *pw;
|
|
struct group *gr;
|
|
gid_t groups[NGROUPS_MAX + 1];
|
|
int ngroups;
|
|
unsigned long name_ul;
|
|
char *end = NULL;
|
|
|
|
/*
|
|
* Set up the unprivileged user.
|
|
*/
|
|
cr->cr_groups = cr->cr_smallgrps;
|
|
cr->cr_uid = UID_NOBODY;
|
|
cr->cr_groups[0] = GID_NOGROUP;
|
|
cr->cr_ngroups = 1;
|
|
/*
|
|
* Get the user's password table entry.
|
|
*/
|
|
names = namelist;
|
|
name = strsep_quote(&names, ":");
|
|
/* Bug? name could be NULL here */
|
|
name_ul = strtoul(name, &end, 10);
|
|
if (*end != '\0' || end == name)
|
|
pw = getpwnam(name);
|
|
else
|
|
pw = getpwuid((uid_t)name_ul);
|
|
/*
|
|
* Credentials specified as those of a user.
|
|
*/
|
|
if (names == NULL) {
|
|
if (pw == NULL) {
|
|
syslog(LOG_ERR, "unknown user: %s", name);
|
|
return;
|
|
}
|
|
cr->cr_uid = pw->pw_uid;
|
|
ngroups = NGROUPS_MAX + 1;
|
|
if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) {
|
|
syslog(LOG_ERR, "too many groups");
|
|
ngroups = NGROUPS_MAX + 1;
|
|
}
|
|
|
|
/*
|
|
* Compress out duplicate.
|
|
*/
|
|
if (ngroups > 1 && groups[0] == groups[1]) {
|
|
ngroups--;
|
|
inpos = 2;
|
|
} else {
|
|
inpos = 1;
|
|
}
|
|
if (ngroups > NGROUPS_MAX)
|
|
ngroups = NGROUPS_MAX;
|
|
if (ngroups > SMALLNGROUPS)
|
|
cr->cr_groups = malloc(ngroups * sizeof(gid_t));
|
|
cr->cr_ngroups = ngroups;
|
|
cr->cr_groups[0] = groups[0];
|
|
memcpy(&cr->cr_groups[1], &groups[inpos], (ngroups - 1) *
|
|
sizeof(gid_t));
|
|
return;
|
|
}
|
|
/*
|
|
* Explicit credential specified as a colon separated list:
|
|
* uid:gid:gid:...
|
|
*/
|
|
if (pw != NULL) {
|
|
cr->cr_uid = pw->pw_uid;
|
|
} else if (*end != '\0' || end == name) {
|
|
syslog(LOG_ERR, "unknown user: %s", name);
|
|
return;
|
|
} else {
|
|
cr->cr_uid = name_ul;
|
|
}
|
|
cr->cr_ngroups = 0;
|
|
while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS_MAX) {
|
|
name = strsep_quote(&names, ":");
|
|
name_ul = strtoul(name, &end, 10);
|
|
if (*end != '\0' || end == name) {
|
|
if ((gr = getgrnam(name)) == NULL) {
|
|
syslog(LOG_ERR, "unknown group: %s", name);
|
|
continue;
|
|
}
|
|
groups[cr->cr_ngroups++] = gr->gr_gid;
|
|
} else {
|
|
groups[cr->cr_ngroups++] = name_ul;
|
|
}
|
|
}
|
|
if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS_MAX)
|
|
syslog(LOG_ERR, "too many groups");
|
|
if (cr->cr_ngroups > SMALLNGROUPS)
|
|
cr->cr_groups = malloc(cr->cr_ngroups * sizeof(gid_t));
|
|
memcpy(cr->cr_groups, groups, cr->cr_ngroups * sizeof(gid_t));
|
|
}
|
|
|
|
#define STRSIZ (MNTNAMLEN+MNTPATHLEN+50)
|
|
/*
|
|
* Routines that maintain the remote mounttab
|
|
*/
|
|
static void
|
|
get_mountlist(void)
|
|
{
|
|
struct mountlist *mlp;
|
|
char *host, *dirp, *cp;
|
|
char str[STRSIZ];
|
|
FILE *mlfile;
|
|
|
|
if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
|
|
if (errno == ENOENT)
|
|
return;
|
|
else {
|
|
syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
|
|
return;
|
|
}
|
|
}
|
|
while (fgets(str, STRSIZ, mlfile) != NULL) {
|
|
cp = str;
|
|
host = strsep(&cp, " \t\n");
|
|
dirp = strsep(&cp, " \t\n");
|
|
if (host == NULL || dirp == NULL)
|
|
continue;
|
|
mlp = (struct mountlist *)malloc(sizeof (*mlp));
|
|
if (mlp == (struct mountlist *)NULL)
|
|
out_of_mem();
|
|
strncpy(mlp->ml_host, host, MNTNAMLEN);
|
|
mlp->ml_host[MNTNAMLEN] = '\0';
|
|
strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
|
|
mlp->ml_dirp[MNTPATHLEN] = '\0';
|
|
|
|
SLIST_INSERT_HEAD(&mlhead, mlp, next);
|
|
}
|
|
fclose(mlfile);
|
|
}
|
|
|
|
static void
|
|
del_mlist(char *hostp, char *dirp)
|
|
{
|
|
struct mountlist *mlp, *mlp2;
|
|
FILE *mlfile;
|
|
int fnd = 0;
|
|
|
|
SLIST_FOREACH_SAFE(mlp, &mlhead, next, mlp2) {
|
|
if (!strcmp(mlp->ml_host, hostp) &&
|
|
(!dirp || !strcmp(mlp->ml_dirp, dirp))) {
|
|
fnd = 1;
|
|
SLIST_REMOVE(&mlhead, mlp, mountlist, next);
|
|
free((caddr_t)mlp);
|
|
}
|
|
}
|
|
if (fnd) {
|
|
if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
|
|
syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
|
|
return;
|
|
}
|
|
SLIST_FOREACH(mlp, &mlhead, next) {
|
|
fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
|
|
}
|
|
fclose(mlfile);
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_mlist(char *hostp, char *dirp)
|
|
{
|
|
struct mountlist *mlp;
|
|
FILE *mlfile;
|
|
|
|
SLIST_FOREACH(mlp, &mlhead, next) {
|
|
if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
|
|
return;
|
|
}
|
|
|
|
mlp = (struct mountlist *)malloc(sizeof (*mlp));
|
|
if (mlp == (struct mountlist *)NULL)
|
|
out_of_mem();
|
|
strncpy(mlp->ml_host, hostp, MNTNAMLEN);
|
|
mlp->ml_host[MNTNAMLEN] = '\0';
|
|
strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
|
|
mlp->ml_dirp[MNTPATHLEN] = '\0';
|
|
SLIST_INSERT_HEAD(&mlhead, mlp, next);
|
|
if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
|
|
syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
|
|
return;
|
|
}
|
|
fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
|
|
fclose(mlfile);
|
|
}
|
|
|
|
/*
|
|
* Free up a group list.
|
|
*/
|
|
static void
|
|
free_grp(struct grouplist *grp)
|
|
{
|
|
if (grp->gr_type == GT_HOST) {
|
|
if (grp->gr_ptr.gt_addrinfo != NULL)
|
|
freeaddrinfo(grp->gr_ptr.gt_addrinfo);
|
|
} else if (grp->gr_type == GT_NET) {
|
|
if (grp->gr_ptr.gt_net.nt_name)
|
|
free(grp->gr_ptr.gt_net.nt_name);
|
|
}
|
|
if (grp->gr_anon.cr_groups != grp->gr_anon.cr_smallgrps)
|
|
free(grp->gr_anon.cr_groups);
|
|
free((caddr_t)grp);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static void
|
|
SYSLOG(int pri, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vfprintf(stderr, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
#endif /* DEBUG */
|
|
|
|
/*
|
|
* Check options for consistency.
|
|
*/
|
|
static int
|
|
check_options(struct dirlist *dp)
|
|
{
|
|
|
|
if (v4root_phase == 0 && dp == NULL)
|
|
return (1);
|
|
if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) {
|
|
syslog(LOG_ERR, "-mapall and -maproot mutually exclusive");
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
|
|
syslog(LOG_ERR, "-mask requires -network");
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) {
|
|
syslog(LOG_ERR, "-network requires mask specification");
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) {
|
|
syslog(LOG_ERR, "-mask and /masklen are mutually exclusive");
|
|
return (1);
|
|
}
|
|
if (v4root_phase > 0 &&
|
|
(opt_flags &
|
|
~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) {
|
|
syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:");
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
|
|
syslog(LOG_ERR, "-alldirs has multiple directories");
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check an absolute directory path for any symbolic links. Return true
|
|
*/
|
|
static int
|
|
check_dirpath(char *dirp)
|
|
{
|
|
char *cp;
|
|
int ret = 1;
|
|
struct stat sb;
|
|
|
|
cp = dirp + 1;
|
|
while (*cp && ret) {
|
|
if (*cp == '/') {
|
|
*cp = '\0';
|
|
if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
|
|
ret = 0;
|
|
*cp = '/';
|
|
}
|
|
cp++;
|
|
}
|
|
if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
|
|
ret = 0;
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Make a netmask according to the specified prefix length. The ss_family
|
|
* and other non-address fields must be initialised before calling this.
|
|
*/
|
|
static int
|
|
makemask(struct sockaddr_storage *ssp, int bitlen)
|
|
{
|
|
u_char *p;
|
|
int bits, i, len;
|
|
|
|
if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL)
|
|
return (-1);
|
|
if (bitlen > len * CHAR_BIT)
|
|
return (-1);
|
|
|
|
for (i = 0; i < len; i++) {
|
|
bits = MIN(CHAR_BIT, bitlen);
|
|
*p++ = (u_char)~0 << (CHAR_BIT - bits);
|
|
bitlen -= bits;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check that the sockaddr is a valid netmask. Returns 0 if the mask
|
|
* is acceptable (i.e. of the form 1...10....0).
|
|
*/
|
|
static int
|
|
checkmask(struct sockaddr *sa)
|
|
{
|
|
u_char *mask;
|
|
int i, len;
|
|
|
|
if ((mask = sa_rawaddr(sa, &len)) == NULL)
|
|
return (-1);
|
|
|
|
for (i = 0; i < len; i++)
|
|
if (mask[i] != 0xff)
|
|
break;
|
|
if (i < len) {
|
|
if (~mask[i] & (u_char)(~mask[i] + 1))
|
|
return (-1);
|
|
i++;
|
|
}
|
|
for (; i < len; i++)
|
|
if (mask[i] != 0)
|
|
return (-1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Compare two sockaddrs according to a specified mask. Return zero if
|
|
* `sa1' matches `sa2' when filtered by the netmask in `samask'.
|
|
* If samask is NULL, perform a full comparison.
|
|
*/
|
|
static int
|
|
sacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask)
|
|
{
|
|
unsigned char *p1, *p2, *mask;
|
|
int len, i;
|
|
|
|
if (sa1->sa_family != sa2->sa_family ||
|
|
(p1 = sa_rawaddr(sa1, &len)) == NULL ||
|
|
(p2 = sa_rawaddr(sa2, NULL)) == NULL)
|
|
return (1);
|
|
|
|
switch (sa1->sa_family) {
|
|
case AF_INET6:
|
|
if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
|
|
((struct sockaddr_in6 *)sa2)->sin6_scope_id)
|
|
return (1);
|
|
break;
|
|
}
|
|
|
|
/* Simple binary comparison if no mask specified. */
|
|
if (samask == NULL)
|
|
return (memcmp(p1, p2, len));
|
|
|
|
/* Set up the mask, and do a mask-based comparison. */
|
|
if (sa1->sa_family != samask->sa_family ||
|
|
(mask = sa_rawaddr(samask, NULL)) == NULL)
|
|
return (1);
|
|
|
|
for (i = 0; i < len; i++)
|
|
if ((p1[i] & mask[i]) != (p2[i] & mask[i]))
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return a pointer to the part of the sockaddr that contains the
|
|
* raw address, and set *nbytes to its length in bytes. Returns
|
|
* NULL if the address family is unknown.
|
|
*/
|
|
static void *
|
|
sa_rawaddr(struct sockaddr *sa, int *nbytes) {
|
|
void *p;
|
|
int len;
|
|
|
|
switch (sa->sa_family) {
|
|
case AF_INET:
|
|
len = sizeof(((struct sockaddr_in *)sa)->sin_addr);
|
|
p = &((struct sockaddr_in *)sa)->sin_addr;
|
|
break;
|
|
case AF_INET6:
|
|
len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr);
|
|
p = &((struct sockaddr_in6 *)sa)->sin6_addr;
|
|
break;
|
|
default:
|
|
p = NULL;
|
|
len = 0;
|
|
}
|
|
|
|
if (nbytes != NULL)
|
|
*nbytes = len;
|
|
return (p);
|
|
}
|
|
|
|
static void
|
|
huphandler(int sig __unused)
|
|
{
|
|
|
|
got_sighup = 1;
|
|
}
|
|
|
|
static void
|
|
terminate(int sig __unused)
|
|
{
|
|
pidfile_remove(pfh);
|
|
rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
|
|
rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
|
|
exit (0);
|
|
}
|
|
|
|
static void
|
|
cp_cred(struct expcred *outcr, struct expcred *incr)
|
|
{
|
|
|
|
outcr->cr_uid = incr->cr_uid;
|
|
outcr->cr_ngroups = incr->cr_ngroups;
|
|
if (outcr->cr_ngroups > SMALLNGROUPS)
|
|
outcr->cr_groups = malloc(outcr->cr_ngroups * sizeof(gid_t));
|
|
else
|
|
outcr->cr_groups = outcr->cr_smallgrps;
|
|
memcpy(outcr->cr_groups, incr->cr_groups, incr->cr_ngroups *
|
|
sizeof(gid_t));
|
|
}
|