To do so, a few dependencies have been imported: * external/bsd/lutok * external/mit/lua * external/public-domain/sqlite * external/public-domain/xz The Kyua framework is the new generation of ATF (Automated Test Framework), it is composed of: * external/bsd/atf * external/bsd/kyua-atf-compat * external/bsd/kyua-cli * external/bsd/kyua-tester * tests Kyua/ATF being written in C++, it depends on libstdc++ which is provided by GCC. As this is not part of the sources, Kyua is only compiled when the native GCC utils are installed. To install Kyua do the following: * In a cross-build enviromnent, add the following to the build.sh commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes WARNING: At this point the import is still experimental, and not supported on native builds (a.k.a make build). Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2577 lines
57 KiB
C
2577 lines
57 KiB
C
/* $NetBSD: mountd.c,v 1.7 2012/01/22 18:36:17 christos Exp $ */
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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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1989, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95";
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#else
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__RCSID("$NetBSD: mountd.c,v 1.7 2012/01/22 18:36:17 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <syslog.h>
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#include <sys/ucred.h>
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#include <rpc/rpc.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/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsmount.h>
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#include <arpa/inet.h>
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#include <rump/rump.h>
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#include <rump/rump_syscalls.h>
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#include <ctype.h>
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#include <errno.h>
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#include <grp.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <netgroup.h>
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#include <pthread.h>
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#include <semaphore.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 <err.h>
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#include <util.h>
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#include "pathnames.h"
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#ifndef IPSEC_POLICY_IPSEC /* no ipsec support on old ipsec */
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#undef IPSEC
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#endif
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#include "ipsec.h"
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#endif
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#include "svc_fdset.h"
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#include <stdarg.h>
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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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struct mountlist *ml_next;
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char ml_host[RPCMNT_NAMELEN + 1];
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char ml_dirp[RPCMNT_PATHLEN + 1];
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int ml_flag;/* XXX more flags (same as dp_flag) */
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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[1]; /* Actually malloc'd to size of dir */
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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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#define DP_KERB 0x4
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#define DP_NORESMNT 0x8
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struct exportlist {
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struct exportlist *ex_next;
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struct dirlist *ex_dirl;
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struct dirlist *ex_defdir;
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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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};
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/* ex_flag bits */
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#define EX_LINKED 0x1
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struct netmsk {
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struct sockaddr_storage nt_net;
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int nt_len;
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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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};
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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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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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size_t fhr_fhsize;
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union {
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uint8_t v2[NFSX_V2FH];
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uint8_t v3[NFSX_V3FHMAX];
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} fhr_fh;
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};
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/* Global defs */
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static char *add_expdir __P((struct dirlist **, char *, int));
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static void add_dlist __P((struct dirlist **, struct dirlist *,
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struct grouplist *, int));
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static void add_mlist __P((char *, char *, int));
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static int check_dirpath __P((const char *, size_t, char *));
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static int check_options __P((const char *, size_t, struct dirlist *));
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static int chk_host __P((struct dirlist *, struct sockaddr *, int *, int *));
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static int del_mlist __P((char *, char *, struct sockaddr *));
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static struct dirlist *dirp_search __P((struct dirlist *, char *));
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static int do_nfssvc __P((const char *, size_t, struct exportlist *,
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struct grouplist *, int, struct uucred *, char *, int, struct statvfs *));
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static int do_opt __P((const char *, size_t, char **, char **,
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struct exportlist *, struct grouplist *, int *, int *, struct uucred *));
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static struct exportlist *ex_search __P((fsid_t *));
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static int parse_directory __P((const char *, size_t, struct grouplist *,
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int, char *, struct exportlist **, struct statvfs *));
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static int parse_host_netgroup __P((const char *, size_t, struct exportlist *,
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struct grouplist *, char *, int *, struct grouplist **));
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static struct exportlist *get_exp __P((void));
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static void free_dir __P((struct dirlist *));
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static void free_exp __P((struct exportlist *));
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static void free_grp __P((struct grouplist *));
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static void free_host __P((struct hostlist *));
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void get_exportlist __P((int));
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static int get_host __P((const char *, size_t, const char *,
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struct grouplist *));
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static struct hostlist *get_ht __P((void));
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static void get_mountlist __P((void));
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static int get_net __P((char *, struct netmsk *, int));
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static void free_exp_grp __P((struct exportlist *, struct grouplist *));
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static struct grouplist *get_grp __P((void));
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static void hang_dirp __P((struct dirlist *, struct grouplist *,
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struct exportlist *, int));
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static void mntsrv __P((struct svc_req *, SVCXPRT *));
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static void nextfield __P((char **, char **));
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static void parsecred __P((char *, struct uucred *));
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static int put_exlist __P((struct dirlist *, XDR *, struct dirlist *, int *));
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static int scan_tree __P((struct dirlist *, struct sockaddr *));
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static void send_umntall __P((int));
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#if 0
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static int umntall_each __P((caddr_t, struct sockaddr_in *));
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#endif
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static int xdr_dir __P((XDR *, char *));
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static int xdr_explist __P((XDR *, caddr_t));
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static int xdr_fhs __P((XDR *, caddr_t));
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static int xdr_mlist __P((XDR *, caddr_t));
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static int bitcmp __P((void *, void *, int));
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static int netpartcmp __P((struct sockaddr *, struct sockaddr *, int));
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static int sacmp __P((struct sockaddr *, struct sockaddr *));
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static int allones __P((struct sockaddr_storage *, int));
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static int countones __P((struct sockaddr *));
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static void bind_resv_port __P((int, sa_family_t, in_port_t));
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static void no_nfs(int);
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static struct exportlist *exphead;
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static struct mountlist *mlhead;
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static struct grouplist *grphead;
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static char *exname;
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static struct uucred def_anon = {
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1,
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(uid_t) -2,
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(gid_t) -2,
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0,
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{ 0 }
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};
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static int opt_flags;
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static int have_v6 = 1;
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static const int ninumeric = NI_NUMERICHOST;
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/* Bits for above */
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#define OP_MAPROOT 0x001
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#define OP_MAPALL 0x002
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#define OP_KERB 0x004
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#define OP_MASK 0x008
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#define OP_NET 0x010
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#define OP_ALLDIRS 0x040
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#define OP_NORESPORT 0x080
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#define OP_NORESMNT 0x100
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#define OP_MASKLEN 0x200
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static int debug = 1;
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#if 0
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static void SYSLOG __P((int, const char *,...));
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#endif
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int main __P((int, char *[]));
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/*
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* If this is non-zero, -noresvport and -noresvmnt are implied for
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* each export.
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*/
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static int noprivports;
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#define C2FD(_c_) ((int)(uintptr_t)(_c_))
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static int
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rumpread(void *cookie, char *buf, int count)
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{
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return rump_sys_read(C2FD(cookie), buf, count);
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}
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static int
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rumpwrite(void *cookie, const char *buf, int count)
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{
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return rump_sys_write(C2FD(cookie), buf, count);
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}
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static off_t
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rumpseek(void *cookie, off_t off, int whence)
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{
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return rump_sys_lseek(C2FD(cookie), off, whence);
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}
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static int
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rumpclose(void *cookie)
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{
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return rump_sys_close(C2FD(cookie));
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}
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int __sflags(const char *, int *); /* XXX */
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static FILE *
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rumpfopen(const char *path, const char *opts)
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{
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int fd, oflags;
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__sflags(opts, &oflags);
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fd = rump_sys_open(path, oflags, 0777);
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if (fd == -1)
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return NULL;
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return funopen((void *)(uintptr_t)fd,
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rumpread, rumpwrite, rumpseek, rumpclose);
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}
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/*
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* Make sure mountd signal handler is executed from a thread context
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* instead of the signal handler. This avoids the signal handler
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* ruining our kernel context.
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*/
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static sem_t exportsem;
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static void
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signal_get_exportlist(int sig)
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{
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sem_post(&exportsem);
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}
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static void *
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exportlist_thread(void *arg)
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{
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for (;;) {
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sem_wait(&exportsem);
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get_exportlist(0);
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}
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return NULL;
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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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* "-d" to enable debugging
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* and "-n" to allow nonroot mount.
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*/
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void *mountd_main(void *);
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void *
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mountd_main(void *arg)
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{
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SVCXPRT *udptransp, *tcptransp;
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struct netconfig *udpconf, *tcpconf;
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int udpsock, tcpsock;
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int xcreated = 0;
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int maxrec = RPC_MAXDATASIZE;
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in_port_t forcedport = 0;
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extern sem_t gensem;
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pthread_t ptdummy;
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alloc_fdset();
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#if 0
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while ((c = getopt(argc, argv, "dNnrp:" ADDOPTS)) != -1)
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switch (c) {
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#ifdef IPSEC
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case 'P':
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if (ipsecsetup_test(policy = optarg))
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errx(1, "Invalid ipsec policy `%s'", policy);
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break;
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#endif
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case 'p':
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/* A forced port "0" will dynamically allocate a port */
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forcedport = atoi(optarg);
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break;
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case 'd':
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debug = 1;
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break;
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case 'N':
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noprivports = 1;
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break;
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/* Compatibility */
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case 'n':
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case 'r':
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break;
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default:
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fprintf(stderr, "usage: %s [-dNn]"
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#ifdef IPSEC
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" [-P policy]"
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#endif
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" [-p port] [exportsfile]\n", getprogname());
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exit(1);
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};
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argc -= optind;
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argv += optind;
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#endif
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sem_init(&exportsem, 0, 0);
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pthread_create(&ptdummy, NULL, exportlist_thread, NULL);
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grphead = NULL;
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exphead = NULL;
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mlhead = NULL;
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exname = _PATH_EXPORTS;
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openlog("mountd", LOG_PID | (debug ? LOG_PERROR : 0), LOG_DAEMON);
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(void)signal(SIGSYS, no_nfs);
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if (debug)
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(void)fprintf(stderr, "Getting export list.\n");
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get_exportlist(0);
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if (debug)
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(void)fprintf(stderr, "Getting mount list.\n");
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get_mountlist();
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if (debug)
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(void)fprintf(stderr, "Here we go.\n");
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if (debug == 0) {
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daemon(0, 0);
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(void)signal(SIGINT, SIG_IGN);
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(void)signal(SIGQUIT, SIG_IGN);
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}
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(void)signal(SIGHUP, signal_get_exportlist);
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(void)signal(SIGTERM, send_umntall);
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pidfile(NULL);
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rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL);
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rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL);
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udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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|
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udpconf = getnetconfigent("udp");
|
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tcpconf = getnetconfigent("tcp");
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rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
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if (udpsock != -1 && udpconf != NULL) {
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bind_resv_port(udpsock, AF_INET, forcedport);
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#ifdef IPSEC
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if (policy)
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ipsecsetup(AF_INET, udpsock, policy);
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#endif
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udptransp = svc_dg_create(udpsock, 0, 0);
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if (udptransp != NULL) {
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if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1,
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mntsrv, udpconf) ||
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!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3,
|
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mntsrv, udpconf)) {
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syslog(LOG_WARNING, "can't register UDP service");
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|
}
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|
else {
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xcreated++;
|
|
}
|
|
} else {
|
|
syslog(LOG_WARNING, "can't create UDP service");
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}
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|
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}
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|
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if (tcpsock != -1 && tcpconf != NULL) {
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bind_resv_port(tcpsock, AF_INET, forcedport);
|
|
#ifdef IPSEC
|
|
if (policy)
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|
ipsecsetup(AF_INET, tcpsock, policy);
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|
#endif
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|
listen(tcpsock, SOMAXCONN);
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|
tcptransp = svc_vc_create(tcpsock, RPC_MAXDATASIZE,
|
|
RPC_MAXDATASIZE);
|
|
if (tcptransp != NULL) {
|
|
if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1,
|
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mntsrv, tcpconf) ||
|
|
!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3,
|
|
mntsrv, tcpconf))
|
|
syslog(LOG_WARNING, "can't register TCP service");
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else
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|
xcreated++;
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} else
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syslog(LOG_WARNING, "can't create TCP service");
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|
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}
|
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|
|
if (xcreated == 0) {
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|
syslog(LOG_ERR, "could not create any services");
|
|
exit(1);
|
|
}
|
|
|
|
sem_post(&gensem);
|
|
svc_run();
|
|
syslog(LOG_ERR, "Mountd died");
|
|
exit(1);
|
|
}
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|
|
|
/*
|
|
* The mount rpc service
|
|
*/
|
|
void
|
|
mntsrv(rqstp, transp)
|
|
struct svc_req *rqstp;
|
|
SVCXPRT *transp;
|
|
{
|
|
struct exportlist *ep;
|
|
struct dirlist *dp;
|
|
struct fhreturn fhr;
|
|
struct stat stb;
|
|
struct statvfs fsb;
|
|
struct addrinfo *ai;
|
|
char host[NI_MAXHOST], numerichost[NI_MAXHOST];
|
|
int lookup_failed = 1;
|
|
struct sockaddr *saddr;
|
|
u_short sport;
|
|
char rpcpath[RPCMNT_PATHLEN + 1], dpath[MAXPATHLEN];
|
|
long bad = EACCES;
|
|
int defset, hostset, ret;
|
|
sigset_t sighup_mask;
|
|
struct sockaddr_in6 *sin6;
|
|
struct sockaddr_in *sin;
|
|
size_t fh_size;
|
|
int error = 0;
|
|
|
|
(void)sigemptyset(&sighup_mask);
|
|
(void)sigaddset(&sighup_mask, SIGHUP);
|
|
saddr = svc_getrpccaller(transp)->buf;
|
|
switch (saddr->sa_family) {
|
|
case AF_INET6:
|
|
sin6 = (struct sockaddr_in6 *)saddr;
|
|
sport = ntohs(sin6->sin6_port);
|
|
break;
|
|
case AF_INET:
|
|
sin = (struct sockaddr_in *)saddr;
|
|
sport = ntohs(sin->sin_port);
|
|
break;
|
|
default:
|
|
syslog(LOG_ERR, "request from unknown address family");
|
|
return;
|
|
}
|
|
lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host,
|
|
NULL, 0, 0);
|
|
if (getnameinfo(saddr, saddr->sa_len, numerichost,
|
|
sizeof numerichost, NULL, 0, ninumeric) != 0)
|
|
strlcpy(numerichost, "?", sizeof(numerichost));
|
|
ai = NULL;
|
|
ret = 0;
|
|
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 (debug)
|
|
fprintf(stderr,
|
|
"got mount request from %s\n", numerichost);
|
|
if (!svc_getargs(transp, xdr_dir, rpcpath)) {
|
|
if (debug)
|
|
fprintf(stderr, "-> garbage args\n");
|
|
svcerr_decode(transp);
|
|
return;
|
|
}
|
|
if (debug)
|
|
fprintf(stderr,
|
|
"-> rpcpath: %s\n", rpcpath);
|
|
/*
|
|
* Get the real pathname and make sure it is a file or
|
|
* directory that exists.
|
|
*/
|
|
#if 0
|
|
if (realpath(rpcpath, dpath) == 0 ||
|
|
#endif
|
|
strcpy(dpath, rpcpath);
|
|
if (rump_sys_stat(dpath, &stb) < 0 ||
|
|
(!S_ISDIR(stb.st_mode) && !S_ISREG(stb.st_mode)) ||
|
|
rump_sys_statvfs1(dpath, &fsb, ST_WAIT) < 0) {
|
|
(void)chdir("/"); /* Just in case realpath doesn't */
|
|
if (debug)
|
|
(void)fprintf(stderr, "-> stat failed on %s\n",
|
|
dpath);
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_long, (caddr_t) &bad))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
return;
|
|
}
|
|
if (debug)
|
|
fprintf(stderr,
|
|
"-> dpath: %s\n", dpath);
|
|
/* Check in the exports list */
|
|
(void)sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
|
|
ep = ex_search(&fsb.f_fsidx);
|
|
hostset = defset = 0;
|
|
if (ep && (chk_host(ep->ex_defdir, saddr, &defset,
|
|
&hostset) || ((dp = dirp_search(ep->ex_dirl, dpath)) &&
|
|
chk_host(dp, saddr, &defset, &hostset)) ||
|
|
(defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
|
|
scan_tree(ep->ex_dirl, saddr) == 0))) {
|
|
if ((hostset & DP_HOSTSET) == 0) {
|
|
hostset = defset;
|
|
}
|
|
if (sport >= IPPORT_RESERVED &&
|
|
!(hostset & DP_NORESMNT)) {
|
|
syslog(LOG_NOTICE,
|
|
"Refused mount RPC from host %s port %d",
|
|
numerichost, sport);
|
|
svcerr_weakauth(transp);
|
|
goto out;
|
|
}
|
|
fhr.fhr_flag = hostset;
|
|
fhr.fhr_vers = rqstp->rq_vers;
|
|
/* Get the file handle */
|
|
memset(&fhr.fhr_fh, 0, sizeof(fhr.fhr_fh)); /* for v2 */
|
|
fh_size = sizeof(fhr.fhr_fh);
|
|
error = 0;
|
|
if (rump_sys_getfh(dpath, &fhr.fhr_fh, &fh_size) < 0) {
|
|
bad = error;
|
|
//syslog(LOG_ERR, "Can't get fh for %s %d %d", dpath, error, fh_size);
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
|
|
(char *)&bad))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
goto out;
|
|
}
|
|
if ((fhr.fhr_vers == 1 && fh_size > NFSX_V2FH) ||
|
|
fh_size > NFSX_V3FHMAX) {
|
|
bad = EINVAL; /* XXX */
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
|
|
(char *)&bad))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
goto out;
|
|
}
|
|
fhr.fhr_fhsize = fh_size;
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs, (char *) &fhr))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
if (!lookup_failed)
|
|
add_mlist(host, dpath, hostset);
|
|
else
|
|
add_mlist(numerichost, dpath, hostset);
|
|
if (debug)
|
|
(void)fprintf(stderr, "Mount successful.\n");
|
|
} else {
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_long, (caddr_t) &bad))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
}
|
|
out:
|
|
(void)sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
return;
|
|
case MOUNTPROC_DUMP:
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, NULL))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
return;
|
|
case MOUNTPROC_UMNT:
|
|
if (!svc_getargs(transp, xdr_dir, dpath)) {
|
|
svcerr_decode(transp);
|
|
return;
|
|
}
|
|
if (!lookup_failed)
|
|
ret = del_mlist(host, dpath, saddr);
|
|
ret |= del_mlist(numerichost, dpath, saddr);
|
|
if (ret) {
|
|
svcerr_weakauth(transp);
|
|
return;
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
return;
|
|
case MOUNTPROC_UMNTALL:
|
|
if (!lookup_failed)
|
|
ret = del_mlist(host, NULL, saddr);
|
|
ret |= del_mlist(numerichost, NULL, saddr);
|
|
if (ret) {
|
|
svcerr_weakauth(transp);
|
|
return;
|
|
}
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
return;
|
|
case MOUNTPROC_EXPORT:
|
|
case MOUNTPROC_EXPORTALL:
|
|
if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, NULL))
|
|
syslog(LOG_ERR, "Can't send reply");
|
|
return;
|
|
|
|
|
|
default:
|
|
svcerr_noproc(transp);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Xdr conversion for a dpath string
|
|
*/
|
|
static int
|
|
xdr_dir(xdrsp, dirp)
|
|
XDR *xdrsp;
|
|
char *dirp;
|
|
{
|
|
|
|
return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
|
|
}
|
|
|
|
/*
|
|
* Xdr routine to generate file handle reply
|
|
*/
|
|
static int
|
|
xdr_fhs(xdrsp, cp)
|
|
XDR *xdrsp;
|
|
caddr_t cp;
|
|
{
|
|
struct fhreturn *fhrp = (struct fhreturn *) cp;
|
|
long ok = 0, len, auth;
|
|
|
|
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 = fhrp->fhr_fhsize;
|
|
if (!xdr_long(xdrsp, &len))
|
|
return (0);
|
|
if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
|
|
return (0);
|
|
if (fhrp->fhr_flag & DP_KERB)
|
|
auth = RPCAUTH_KERB4;
|
|
else
|
|
auth = RPCAUTH_UNIX;
|
|
len = 1;
|
|
if (!xdr_long(xdrsp, &len))
|
|
return (0);
|
|
return (xdr_long(xdrsp, &auth));
|
|
};
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
xdr_mlist(xdrsp, cp)
|
|
XDR *xdrsp;
|
|
caddr_t cp;
|
|
{
|
|
struct mountlist *mlp;
|
|
int trueval = 1;
|
|
int falseval = 0;
|
|
char *strp;
|
|
|
|
mlp = mlhead;
|
|
while (mlp) {
|
|
if (!xdr_bool(xdrsp, &trueval))
|
|
return (0);
|
|
strp = &mlp->ml_host[0];
|
|
if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
|
|
return (0);
|
|
strp = &mlp->ml_dirp[0];
|
|
if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
|
|
return (0);
|
|
mlp = mlp->ml_next;
|
|
}
|
|
if (!xdr_bool(xdrsp, &falseval))
|
|
return (0);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Xdr conversion for export list
|
|
*/
|
|
int
|
|
xdr_explist(xdrsp, cp)
|
|
XDR *xdrsp;
|
|
caddr_t cp;
|
|
{
|
|
struct exportlist *ep;
|
|
int falseval = 0;
|
|
int putdef;
|
|
sigset_t sighup_mask;
|
|
|
|
(void)sigemptyset(&sighup_mask);
|
|
(void)sigaddset(&sighup_mask, SIGHUP);
|
|
(void)sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
|
|
ep = exphead;
|
|
while (ep) {
|
|
putdef = 0;
|
|
if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef))
|
|
goto errout;
|
|
if (ep->ex_defdir && putdef == 0 &&
|
|
put_exlist(ep->ex_defdir, xdrsp, NULL, &putdef))
|
|
goto errout;
|
|
ep = ep->ex_next;
|
|
}
|
|
(void)sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
if (!xdr_bool(xdrsp, &falseval))
|
|
return (0);
|
|
return (1);
|
|
errout:
|
|
(void)sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Called from xdr_explist() to traverse the tree and export the
|
|
* directory paths. Assumes SIGHUP has already been masked.
|
|
*/
|
|
int
|
|
put_exlist(dp, xdrsp, adp, putdefp)
|
|
struct dirlist *dp;
|
|
XDR *xdrsp;
|
|
struct dirlist *adp;
|
|
int *putdefp;
|
|
{
|
|
struct grouplist *grp;
|
|
struct hostlist *hp;
|
|
int trueval = 1;
|
|
int falseval = 0;
|
|
int gotalldir = 0;
|
|
char *strp;
|
|
|
|
if (dp) {
|
|
if (put_exlist(dp->dp_left, xdrsp, adp, putdefp))
|
|
return (1);
|
|
if (!xdr_bool(xdrsp, &trueval))
|
|
return (1);
|
|
strp = dp->dp_dirp;
|
|
if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
|
|
return (1);
|
|
if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
|
|
gotalldir = 1;
|
|
*putdefp = 1;
|
|
}
|
|
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, &trueval))
|
|
return (1);
|
|
strp =
|
|
grp->gr_ptr.gt_addrinfo->ai_canonname;
|
|
if (!xdr_string(xdrsp, &strp,
|
|
RPCMNT_NAMELEN))
|
|
return (1);
|
|
} else if (grp->gr_type == GT_NET) {
|
|
if (!xdr_bool(xdrsp, &trueval))
|
|
return (1);
|
|
strp = grp->gr_ptr.gt_net.nt_name;
|
|
if (!xdr_string(xdrsp, &strp,
|
|
RPCMNT_NAMELEN))
|
|
return (1);
|
|
}
|
|
hp = hp->ht_next;
|
|
if (gotalldir && hp == NULL) {
|
|
hp = adp->dp_hosts;
|
|
gotalldir = 0;
|
|
}
|
|
}
|
|
}
|
|
if (!xdr_bool(xdrsp, &falseval))
|
|
return (1);
|
|
if (put_exlist(dp->dp_right, xdrsp, adp, putdefp))
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
parse_host_netgroup(line, lineno, ep, tgrp, cp, has_host, grp)
|
|
const char *line;
|
|
size_t lineno;
|
|
struct exportlist *ep;
|
|
struct grouplist *tgrp;
|
|
char *cp;
|
|
int *has_host;
|
|
struct grouplist **grp;
|
|
{
|
|
const char *hst, *usr, *dom;
|
|
int netgrp;
|
|
|
|
if (ep == NULL) {
|
|
syslog(LOG_ERR, "\"%s\", line %ld: No current export",
|
|
line, (unsigned long)lineno);
|
|
return 0;
|
|
}
|
|
setnetgrent(cp);
|
|
netgrp = getnetgrent(&hst, &usr, &dom);
|
|
do {
|
|
if (*has_host) {
|
|
(*grp)->gr_next = get_grp();
|
|
*grp = (*grp)->gr_next;
|
|
}
|
|
if (netgrp) {
|
|
if (hst == NULL) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: No host in netgroup %s",
|
|
line, (unsigned long)lineno, cp);
|
|
goto bad;
|
|
}
|
|
if (get_host(line, lineno, hst, *grp))
|
|
goto bad;
|
|
} else if (get_host(line, lineno, cp, *grp))
|
|
goto bad;
|
|
*has_host = TRUE;
|
|
} while (netgrp && getnetgrent(&hst, &usr, &dom));
|
|
|
|
endnetgrent();
|
|
return 1;
|
|
bad:
|
|
endnetgrent();
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int
|
|
parse_directory(line, lineno, tgrp, got_nondir, cp, ep, fsp)
|
|
const char *line;
|
|
size_t lineno;
|
|
struct grouplist *tgrp;
|
|
int got_nondir;
|
|
char *cp;
|
|
struct exportlist **ep;
|
|
struct statvfs *fsp;
|
|
{
|
|
int error = 0;
|
|
|
|
if (!check_dirpath(line, lineno, cp))
|
|
return 0;
|
|
|
|
if (rump_sys_statvfs1(cp, fsp, ST_WAIT) == -1) {
|
|
syslog(LOG_ERR, "\"%s\", line %ld: statvfs for `%s' failed: %m %d",
|
|
line, (unsigned long)lineno, cp, error);
|
|
return 0;
|
|
}
|
|
|
|
if (got_nondir) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Directories must precede files",
|
|
line, (unsigned long)lineno);
|
|
return 0;
|
|
}
|
|
if (*ep) {
|
|
if ((*ep)->ex_fs.__fsid_val[0] != fsp->f_fsidx.__fsid_val[0] ||
|
|
(*ep)->ex_fs.__fsid_val[1] != fsp->f_fsidx.__fsid_val[1]) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: filesystem ids disagree",
|
|
line, (unsigned long)lineno);
|
|
return 0;
|
|
}
|
|
} else {
|
|
/*
|
|
* See if this directory is already
|
|
* in the list.
|
|
*/
|
|
*ep = ex_search(&fsp->f_fsidx);
|
|
if (*ep == NULL) {
|
|
*ep = get_exp();
|
|
(*ep)->ex_fs = fsp->f_fsidx;
|
|
(*ep)->ex_fsdir = estrdup(fsp->f_mntonname);
|
|
if (debug)
|
|
(void)fprintf(stderr,
|
|
"Making new ep fs=0x%x,0x%x\n",
|
|
fsp->f_fsidx.__fsid_val[0], fsp->f_fsidx.__fsid_val[1]);
|
|
} else {
|
|
if (debug)
|
|
(void)fprintf(stderr,
|
|
"Found ep fs=0x%x,0x%x\n",
|
|
fsp->f_fsidx.__fsid_val[0], fsp->f_fsidx.__fsid_val[1]);
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Get the export list
|
|
*/
|
|
/* ARGSUSED */
|
|
void
|
|
get_exportlist(n)
|
|
int n;
|
|
{
|
|
struct exportlist *ep, *ep2;
|
|
struct grouplist *grp, *tgrp;
|
|
struct exportlist **epp;
|
|
struct dirlist *dirhead;
|
|
struct statvfs fsb, *fsp;
|
|
struct addrinfo *ai;
|
|
struct uucred anon;
|
|
char *cp, *endcp, *dirp, savedc;
|
|
int has_host, exflags, got_nondir, dirplen, num, i;
|
|
FILE *exp_file;
|
|
char *line;
|
|
size_t lineno = 0, len;
|
|
|
|
|
|
/*
|
|
* First, get rid of the old list
|
|
*/
|
|
ep = exphead;
|
|
while (ep) {
|
|
ep2 = ep;
|
|
ep = ep->ex_next;
|
|
free_exp(ep2);
|
|
}
|
|
exphead = NULL;
|
|
|
|
dirp = NULL;
|
|
dirplen = 0;
|
|
grp = grphead;
|
|
while (grp) {
|
|
tgrp = grp;
|
|
grp = grp->gr_next;
|
|
free_grp(tgrp);
|
|
}
|
|
grphead = NULL;
|
|
|
|
/*
|
|
* And delete exports that are in the kernel for all local
|
|
* file systems.
|
|
*/
|
|
num = getmntinfo(&fsp, MNT_NOWAIT);
|
|
for (i = 0; i < num; i++) {
|
|
struct mountd_exports_list mel;
|
|
|
|
/* Delete all entries from the export list. */
|
|
mel.mel_path = fsp->f_mntonname;
|
|
mel.mel_nexports = 0;
|
|
if (rump_sys_nfssvc(NFSSVC_SETEXPORTSLIST, &mel) == -1 &&
|
|
errno != EOPNOTSUPP)
|
|
syslog(LOG_ERR, "Can't delete exports for %s (%m)",
|
|
fsp->f_mntonname);
|
|
|
|
fsp++;
|
|
}
|
|
|
|
/*
|
|
* Read in the exports file and build the list, calling
|
|
* mount() as we go along to push the export rules into the kernel.
|
|
*/
|
|
exname = _PATH_EXPORTS;
|
|
if ((exp_file = rumpfopen(exname, "r")) == NULL) {
|
|
/*
|
|
* Don't exit here; we can still reload the config
|
|
* after a SIGHUP.
|
|
*/
|
|
if (debug)
|
|
(void)fprintf(stderr, "Can't open %s: %s\n", exname,
|
|
strerror(errno));
|
|
return;
|
|
}
|
|
dirhead = NULL;
|
|
while ((line = fparseln(exp_file, &len, &lineno, NULL, 0)) != NULL) {
|
|
if (debug)
|
|
(void)fprintf(stderr, "Got line %s\n", line);
|
|
cp = line;
|
|
nextfield(&cp, &endcp);
|
|
if (cp == endcp)
|
|
goto nextline; /* skip empty line */
|
|
/*
|
|
* Set defaults.
|
|
*/
|
|
has_host = FALSE;
|
|
anon = def_anon;
|
|
exflags = MNT_EXPORTED;
|
|
got_nondir = 0;
|
|
opt_flags = 0;
|
|
ep = NULL;
|
|
|
|
if (noprivports) {
|
|
opt_flags |= OP_NORESMNT | OP_NORESPORT;
|
|
exflags |= MNT_EXNORESPORT;
|
|
}
|
|
|
|
/*
|
|
* Create new exports list entry
|
|
*/
|
|
len = endcp - cp;
|
|
tgrp = grp = get_grp();
|
|
while (len > 0) {
|
|
if (len > RPCMNT_NAMELEN) {
|
|
*endcp = '\0';
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: name `%s' is too long",
|
|
line, (unsigned long)lineno, cp);
|
|
goto badline;
|
|
}
|
|
switch (*cp) {
|
|
case '-':
|
|
/*
|
|
* Option
|
|
*/
|
|
if (ep == NULL) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: No current export list",
|
|
line, (unsigned long)lineno);
|
|
goto badline;
|
|
}
|
|
if (debug)
|
|
(void)fprintf(stderr, "doing opt %s\n",
|
|
cp);
|
|
got_nondir = 1;
|
|
if (do_opt(line, lineno, &cp, &endcp, ep, grp,
|
|
&has_host, &exflags, &anon))
|
|
goto badline;
|
|
break;
|
|
|
|
case '/':
|
|
/*
|
|
* Directory
|
|
*/
|
|
savedc = *endcp;
|
|
*endcp = '\0';
|
|
|
|
if (!parse_directory(line, lineno, tgrp,
|
|
got_nondir, cp, &ep, &fsb))
|
|
goto badline;
|
|
/*
|
|
* Add dirpath to export mount point.
|
|
*/
|
|
dirp = add_expdir(&dirhead, cp, len);
|
|
dirplen = len;
|
|
|
|
*endcp = savedc;
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* Host or netgroup.
|
|
*/
|
|
savedc = *endcp;
|
|
*endcp = '\0';
|
|
|
|
if (!parse_host_netgroup(line, lineno, ep,
|
|
tgrp, cp, &has_host, &grp))
|
|
goto badline;
|
|
|
|
got_nondir = 1;
|
|
|
|
*endcp = savedc;
|
|
break;
|
|
}
|
|
|
|
cp = endcp;
|
|
nextfield(&cp, &endcp);
|
|
len = endcp - cp;
|
|
}
|
|
if (check_options(line, lineno, dirhead))
|
|
goto badline;
|
|
|
|
if (!has_host) {
|
|
grp->gr_type = GT_HOST;
|
|
if (debug)
|
|
(void)fprintf(stderr,
|
|
"Adding a default entry\n");
|
|
/* add a default group and make the grp list NULL */
|
|
ai = emalloc(sizeof(struct addrinfo));
|
|
ai->ai_flags = 0;
|
|
ai->ai_family = AF_INET; /* XXXX */
|
|
ai->ai_socktype = SOCK_DGRAM;
|
|
/* setting the length to 0 will match anything */
|
|
ai->ai_addrlen = 0;
|
|
ai->ai_flags = AI_CANONNAME;
|
|
ai->ai_canonname = estrdup("Default");
|
|
ai->ai_addr = NULL;
|
|
ai->ai_next = NULL;
|
|
grp->gr_ptr.gt_addrinfo = ai;
|
|
|
|
} else if ((opt_flags & OP_NET) && tgrp->gr_next) {
|
|
/*
|
|
* Don't allow a network export coincide with a list of
|
|
* host(s) on the same line.
|
|
*/
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Mixed exporting of networks and hosts is disallowed",
|
|
line, (unsigned long)lineno);
|
|
goto badline;
|
|
}
|
|
/*
|
|
* 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.
|
|
*/
|
|
grp = tgrp;
|
|
do {
|
|
if (do_nfssvc(line, lineno, ep, grp, exflags, &anon,
|
|
dirp, dirplen, &fsb))
|
|
goto badline;
|
|
} while (grp->gr_next && (grp = grp->gr_next));
|
|
|
|
/*
|
|
* Success. Update the data structures.
|
|
*/
|
|
if (has_host) {
|
|
hang_dirp(dirhead, tgrp, ep, opt_flags);
|
|
grp->gr_next = grphead;
|
|
grphead = tgrp;
|
|
} else {
|
|
hang_dirp(dirhead, NULL, ep, opt_flags);
|
|
free_grp(tgrp);
|
|
}
|
|
tgrp = NULL;
|
|
dirhead = NULL;
|
|
if ((ep->ex_flag & EX_LINKED) == 0) {
|
|
ep2 = exphead;
|
|
epp = &exphead;
|
|
|
|
/*
|
|
* Insert in the list in alphabetical order.
|
|
*/
|
|
while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) {
|
|
epp = &ep2->ex_next;
|
|
ep2 = ep2->ex_next;
|
|
}
|
|
if (ep2)
|
|
ep->ex_next = ep2;
|
|
*epp = ep;
|
|
ep->ex_flag |= EX_LINKED;
|
|
}
|
|
goto nextline;
|
|
badline:
|
|
free_exp_grp(ep, grp);
|
|
nextline:
|
|
if (dirhead) {
|
|
free_dir(dirhead);
|
|
dirhead = NULL;
|
|
}
|
|
free(line);
|
|
}
|
|
(void)fclose(exp_file);
|
|
}
|
|
|
|
/*
|
|
* Allocate an export list element
|
|
*/
|
|
static struct exportlist *
|
|
get_exp()
|
|
{
|
|
struct exportlist *ep;
|
|
|
|
ep = emalloc(sizeof(struct exportlist));
|
|
(void)memset(ep, 0, sizeof(struct exportlist));
|
|
return (ep);
|
|
}
|
|
|
|
/*
|
|
* Allocate a group list element
|
|
*/
|
|
static struct grouplist *
|
|
get_grp()
|
|
{
|
|
struct grouplist *gp;
|
|
|
|
gp = emalloc(sizeof(struct grouplist));
|
|
(void)memset(gp, 0, sizeof(struct grouplist));
|
|
return (gp);
|
|
}
|
|
|
|
/*
|
|
* Clean up upon an error in get_exportlist().
|
|
*/
|
|
static void
|
|
free_exp_grp(ep, grp)
|
|
struct exportlist *ep;
|
|
struct grouplist *grp;
|
|
{
|
|
struct grouplist *tgrp;
|
|
|
|
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)
|
|
fsid_t *fsid;
|
|
{
|
|
struct exportlist *ep;
|
|
|
|
ep = exphead;
|
|
return ep;
|
|
while (ep) {
|
|
if (ep->ex_fs.__fsid_val[0] == fsid->__fsid_val[0] &&
|
|
ep->ex_fs.__fsid_val[1] == fsid->__fsid_val[1])
|
|
return (ep);
|
|
ep = ep->ex_next;
|
|
}
|
|
return (ep);
|
|
}
|
|
|
|
/*
|
|
* Add a directory path to the list.
|
|
*/
|
|
static char *
|
|
add_expdir(dpp, cp, len)
|
|
struct dirlist **dpp;
|
|
char *cp;
|
|
int len;
|
|
{
|
|
struct dirlist *dp;
|
|
|
|
dp = emalloc(sizeof(struct dirlist) + len);
|
|
dp->dp_left = *dpp;
|
|
dp->dp_right = NULL;
|
|
dp->dp_flag = 0;
|
|
dp->dp_hosts = NULL;
|
|
(void)strcpy(dp->dp_dirp, cp);
|
|
*dpp = dp;
|
|
return (dp->dp_dirp);
|
|
}
|
|
|
|
/*
|
|
* Hang the dir list element off the dirpath binary tree as required
|
|
* and update the entry for host.
|
|
*/
|
|
void
|
|
hang_dirp(dp, grp, ep, flags)
|
|
struct dirlist *dp;
|
|
struct grouplist *grp;
|
|
struct exportlist *ep;
|
|
int flags;
|
|
{
|
|
struct hostlist *hp;
|
|
struct dirlist *dp2;
|
|
|
|
if (flags & OP_ALLDIRS) {
|
|
if (ep->ex_defdir)
|
|
free(dp);
|
|
else
|
|
ep->ex_defdir = dp;
|
|
if (grp == NULL) {
|
|
ep->ex_defdir->dp_flag |= DP_DEFSET;
|
|
if (flags & OP_KERB)
|
|
ep->ex_defdir->dp_flag |= DP_KERB;
|
|
if (flags & OP_NORESMNT)
|
|
ep->ex_defdir->dp_flag |= DP_NORESMNT;
|
|
} else
|
|
while (grp) {
|
|
hp = get_ht();
|
|
if (flags & OP_KERB)
|
|
hp->ht_flag |= DP_KERB;
|
|
if (flags & OP_NORESMNT)
|
|
hp->ht_flag |= DP_NORESMNT;
|
|
hp->ht_grp = grp;
|
|
hp->ht_next = ep->ex_defdir->dp_hosts;
|
|
ep->ex_defdir->dp_hosts = hp;
|
|
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);
|
|
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(dpp, newdp, grp, flags)
|
|
struct dirlist **dpp;
|
|
struct dirlist *newdp;
|
|
struct grouplist *grp;
|
|
int flags;
|
|
{
|
|
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);
|
|
return;
|
|
} else if (cmp < 0) {
|
|
add_dlist(&dp->dp_right, newdp, grp, flags);
|
|
return;
|
|
} else
|
|
free(newdp);
|
|
} else {
|
|
dp = newdp;
|
|
dp->dp_left = NULL;
|
|
*dpp = dp;
|
|
}
|
|
if (grp) {
|
|
|
|
/*
|
|
* Hang all of the host(s) off of the directory point.
|
|
*/
|
|
do {
|
|
hp = get_ht();
|
|
if (flags & OP_KERB)
|
|
hp->ht_flag |= DP_KERB;
|
|
if (flags & OP_NORESMNT)
|
|
hp->ht_flag |= DP_NORESMNT;
|
|
hp->ht_grp = grp;
|
|
hp->ht_next = dp->dp_hosts;
|
|
dp->dp_hosts = hp;
|
|
grp = grp->gr_next;
|
|
} while (grp);
|
|
} else {
|
|
dp->dp_flag |= DP_DEFSET;
|
|
if (flags & OP_KERB)
|
|
dp->dp_flag |= DP_KERB;
|
|
if (flags & OP_NORESMNT)
|
|
dp->dp_flag |= DP_NORESMNT;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Search for a dirpath on the export point.
|
|
*/
|
|
static struct dirlist *
|
|
dirp_search(dp, dirp)
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* Some helper functions for netmasks. They all assume masks in network
|
|
* order (big endian).
|
|
*/
|
|
static int
|
|
bitcmp(void *dst, void *src, int bitlen)
|
|
{
|
|
int i;
|
|
u_int8_t *p1 = dst, *p2 = src;
|
|
u_int8_t bitmask;
|
|
int bytelen, bitsleft;
|
|
|
|
bytelen = bitlen / 8;
|
|
bitsleft = bitlen % 8;
|
|
|
|
if (debug) {
|
|
printf("comparing:\n");
|
|
for (i = 0; i < (bitsleft ? bytelen + 1 : bytelen); i++)
|
|
printf("%02x", p1[i]);
|
|
printf("\n");
|
|
for (i = 0; i < (bitsleft ? bytelen + 1 : bytelen); i++)
|
|
printf("%02x", p2[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
for (i = 0; i < bytelen; i++) {
|
|
if (*p1 != *p2)
|
|
return 1;
|
|
p1++;
|
|
p2++;
|
|
}
|
|
|
|
for (i = 0; i < bitsleft; i++) {
|
|
bitmask = 1 << (7 - i);
|
|
if ((*p1 & bitmask) != (*p2 & bitmask))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
netpartcmp(struct sockaddr *s1, struct sockaddr *s2, int bitlen)
|
|
{
|
|
void *src, *dst;
|
|
|
|
if (s1->sa_family != s2->sa_family)
|
|
return 1;
|
|
|
|
switch (s1->sa_family) {
|
|
case AF_INET:
|
|
src = &((struct sockaddr_in *)s1)->sin_addr;
|
|
dst = &((struct sockaddr_in *)s2)->sin_addr;
|
|
if (bitlen > sizeof(((struct sockaddr_in *)s1)->sin_addr) * 8)
|
|
return 1;
|
|
break;
|
|
case AF_INET6:
|
|
src = &((struct sockaddr_in6 *)s1)->sin6_addr;
|
|
dst = &((struct sockaddr_in6 *)s2)->sin6_addr;
|
|
if (((struct sockaddr_in6 *)s1)->sin6_scope_id !=
|
|
((struct sockaddr_in6 *)s2)->sin6_scope_id)
|
|
return 1;
|
|
if (bitlen > sizeof(((struct sockaddr_in6 *)s1)->sin6_addr) * 8)
|
|
return 1;
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
|
|
return bitcmp(src, dst, bitlen);
|
|
}
|
|
|
|
static int
|
|
allones(struct sockaddr_storage *ssp, int bitlen)
|
|
{
|
|
u_int8_t *p;
|
|
int bytelen, bitsleft, i;
|
|
int zerolen;
|
|
|
|
switch (ssp->ss_family) {
|
|
case AF_INET:
|
|
p = (u_int8_t *)&((struct sockaddr_in *)ssp)->sin_addr;
|
|
zerolen = sizeof (((struct sockaddr_in *)ssp)->sin_addr);
|
|
break;
|
|
case AF_INET6:
|
|
p = (u_int8_t *)&((struct sockaddr_in6 *)ssp)->sin6_addr;
|
|
zerolen = sizeof (((struct sockaddr_in6 *)ssp)->sin6_addr);
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
memset(p, 0, zerolen);
|
|
|
|
bytelen = bitlen / 8;
|
|
bitsleft = bitlen % 8;
|
|
|
|
if (bytelen > zerolen)
|
|
return -1;
|
|
|
|
for (i = 0; i < bytelen; i++)
|
|
*p++ = 0xff;
|
|
|
|
for (i = 0; i < bitsleft; i++)
|
|
*p |= 1 << (7 - i);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
countones(struct sockaddr *sa)
|
|
{
|
|
void *mask;
|
|
int i, bits = 0, bytelen;
|
|
u_int8_t *p;
|
|
|
|
switch (sa->sa_family) {
|
|
case AF_INET:
|
|
mask = (u_int8_t *)&((struct sockaddr_in *)sa)->sin_addr;
|
|
bytelen = 4;
|
|
break;
|
|
case AF_INET6:
|
|
mask = (u_int8_t *)&((struct sockaddr_in6 *)sa)->sin6_addr;
|
|
bytelen = 16;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
p = mask;
|
|
|
|
for (i = 0; i < bytelen; i++, p++) {
|
|
if (*p != 0xff) {
|
|
for (bits = 0; bits < 8; bits++) {
|
|
if (!(*p & (1 << (7 - bits))))
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (i * 8 + bits);
|
|
}
|
|
|
|
static int
|
|
sacmp(struct sockaddr *sa1, struct sockaddr *sa2)
|
|
{
|
|
void *p1, *p2;
|
|
int len;
|
|
|
|
if (sa1->sa_family != sa2->sa_family)
|
|
return 1;
|
|
|
|
switch (sa1->sa_family) {
|
|
case AF_INET:
|
|
p1 = &((struct sockaddr_in *)sa1)->sin_addr;
|
|
p2 = &((struct sockaddr_in *)sa2)->sin_addr;
|
|
len = 4;
|
|
break;
|
|
case AF_INET6:
|
|
p1 = &((struct sockaddr_in6 *)sa1)->sin6_addr;
|
|
p2 = &((struct sockaddr_in6 *)sa2)->sin6_addr;
|
|
len = 16;
|
|
if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
|
|
((struct sockaddr_in6 *)sa2)->sin6_scope_id)
|
|
return 1;
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
|
|
return memcmp(p1, p2, len);
|
|
}
|
|
|
|
/*
|
|
* Scan for a host match in a directory tree.
|
|
*/
|
|
static int
|
|
chk_host(dp, saddr, defsetp, hostsetp)
|
|
struct dirlist *dp;
|
|
struct sockaddr *saddr;
|
|
int *defsetp;
|
|
int *hostsetp;
|
|
{
|
|
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)) {
|
|
*hostsetp =
|
|
(hp->ht_flag | DP_HOSTSET);
|
|
return (1);
|
|
}
|
|
}
|
|
break;
|
|
case GT_NET:
|
|
if (!netpartcmp(saddr,
|
|
(struct sockaddr *)
|
|
&grp->gr_ptr.gt_net.nt_net,
|
|
grp->gr_ptr.gt_net.nt_len)) {
|
|
*hostsetp = (hp->ht_flag | DP_HOSTSET);
|
|
return (1);
|
|
}
|
|
break;
|
|
};
|
|
hp = hp->ht_next;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Scan tree for a host that matches the address.
|
|
*/
|
|
static int
|
|
scan_tree(dp, saddr)
|
|
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))
|
|
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(dp)
|
|
struct dirlist *dp;
|
|
{
|
|
|
|
if (dp) {
|
|
free_dir(dp->dp_left);
|
|
free_dir(dp->dp_right);
|
|
free_host(dp->dp_hosts);
|
|
free(dp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the option string and update fields.
|
|
* Option arguments may either be -<option>=<value> or
|
|
* -<option> <value>
|
|
*/
|
|
static int
|
|
do_opt(line, lineno, cpp, endcpp, ep, grp, has_hostp, exflagsp, cr)
|
|
const char *line;
|
|
size_t lineno;
|
|
char **cpp, **endcpp;
|
|
struct exportlist *ep;
|
|
struct grouplist *grp;
|
|
int *has_hostp;
|
|
int *exflagsp;
|
|
struct uucred *cr;
|
|
{
|
|
char *cpoptarg, *cpoptend;
|
|
char *cp, *cpopt, savedc, savedc2;
|
|
char *endcp = NULL; /* XXX: GCC */
|
|
int allflag, usedarg;
|
|
|
|
cpopt = *cpp;
|
|
cpopt++;
|
|
cp = *endcpp;
|
|
savedc = *cp;
|
|
*cp = '\0';
|
|
while (cpopt && *cpopt) {
|
|
allflag = 1;
|
|
usedarg = -2;
|
|
savedc2 = '\0';
|
|
if ((cpoptend = strchr(cpopt, ',')) != NULL) {
|
|
*cpoptend++ = '\0';
|
|
if ((cpoptarg = strchr(cpopt, '=')) != NULL)
|
|
*cpoptarg++ = '\0';
|
|
} else {
|
|
if ((cpoptarg = strchr(cpopt, '=')) != NULL)
|
|
*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 (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) {
|
|
*exflagsp |= MNT_EXKERB;
|
|
opt_flags |= OP_KERB;
|
|
} else if (cpoptarg && (!strcmp(cpopt, "mask") ||
|
|
!strcmp(cpopt, "m"))) {
|
|
if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Bad mask: %s",
|
|
line, (unsigned long)lineno, 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,
|
|
"\"%s\", line %ld: Network/host conflict",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
} else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Bad net: %s",
|
|
line, (unsigned long)lineno, 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, "noresvmnt")) {
|
|
opt_flags |= OP_NORESMNT;
|
|
} else if (!strcmp(cpopt, "noresvport")) {
|
|
opt_flags |= OP_NORESPORT;
|
|
*exflagsp |= MNT_EXNORESPORT;
|
|
} else if (!strcmp(cpopt, "public")) {
|
|
*exflagsp |= (MNT_EXNORESPORT | MNT_EXPUBLIC);
|
|
opt_flags |= OP_NORESPORT;
|
|
} else if (!strcmp(cpopt, "webnfs")) {
|
|
*exflagsp |= (MNT_EXNORESPORT | MNT_EXPUBLIC |
|
|
MNT_EXRDONLY | MNT_EXPORTANON);
|
|
opt_flags |= (OP_MAPALL | OP_NORESPORT);
|
|
} else if (cpoptarg && !strcmp(cpopt, "index")) {
|
|
ep->ex_indexfile = strdup(cpoptarg);
|
|
} else {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Bad opt %s",
|
|
line, (unsigned long)lineno, 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(line, lineno, cp, grp)
|
|
const char *line;
|
|
size_t lineno;
|
|
const char *cp;
|
|
struct grouplist *grp;
|
|
{
|
|
struct addrinfo *ai, hints;
|
|
int ecode;
|
|
char host[NI_MAXHOST];
|
|
|
|
if (grp->gr_type != GT_NULL) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Bad netgroup type for ip host %s",
|
|
line, (unsigned long)lineno, 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, "\"%s\", line %ld: can't get address info for "
|
|
"host %s",
|
|
line, (long)lineno, cp);
|
|
return 1;
|
|
}
|
|
grp->gr_type = GT_HOST;
|
|
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, ninumeric) != 0)
|
|
strlcpy(host, "?", sizeof(host));
|
|
ai->ai_canonname = estrdup(host);
|
|
ai->ai_flags |= AI_CANONNAME;
|
|
} else
|
|
ai->ai_flags &= ~AI_CANONNAME;
|
|
if (debug)
|
|
(void)fprintf(stderr, "got host %s\n", ai->ai_canonname);
|
|
ai = ai->ai_next;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Free up an exports list component
|
|
*/
|
|
static void
|
|
free_exp(ep)
|
|
struct exportlist *ep;
|
|
{
|
|
|
|
if (ep->ex_defdir) {
|
|
free_host(ep->ex_defdir->dp_hosts);
|
|
free(ep->ex_defdir);
|
|
}
|
|
if (ep->ex_fsdir)
|
|
free(ep->ex_fsdir);
|
|
if (ep->ex_indexfile)
|
|
free(ep->ex_indexfile);
|
|
free_dir(ep->ex_dirl);
|
|
free(ep);
|
|
}
|
|
|
|
/*
|
|
* Free hosts.
|
|
*/
|
|
static void
|
|
free_host(hp)
|
|
struct hostlist *hp;
|
|
{
|
|
struct hostlist *hp2;
|
|
|
|
while (hp) {
|
|
hp2 = hp;
|
|
hp = hp->ht_next;
|
|
free(hp2);
|
|
}
|
|
}
|
|
|
|
static struct hostlist *
|
|
get_ht()
|
|
{
|
|
struct hostlist *hp;
|
|
|
|
hp = emalloc(sizeof(struct hostlist));
|
|
hp->ht_next = NULL;
|
|
hp->ht_flag = 0;
|
|
return (hp);
|
|
}
|
|
|
|
/*
|
|
* Do the nfssvc syscall to push the export info into the kernel.
|
|
*/
|
|
static int
|
|
do_nfssvc(line, lineno, ep, grp, exflags, anoncrp, dirp, dirplen, fsb)
|
|
const char *line;
|
|
size_t lineno;
|
|
struct exportlist *ep;
|
|
struct grouplist *grp;
|
|
int exflags;
|
|
struct uucred *anoncrp;
|
|
char *dirp;
|
|
int dirplen;
|
|
struct statvfs *fsb;
|
|
{
|
|
struct sockaddr *addrp;
|
|
struct sockaddr_storage ss;
|
|
struct addrinfo *ai;
|
|
int addrlen;
|
|
int done;
|
|
struct export_args export;
|
|
|
|
export.ex_flags = exflags;
|
|
export.ex_anon = *anoncrp;
|
|
export.ex_indexfile = ep->ex_indexfile;
|
|
if (grp->gr_type == GT_HOST) {
|
|
ai = grp->gr_ptr.gt_addrinfo;
|
|
addrp = ai->ai_addr;
|
|
addrlen = ai->ai_addrlen;
|
|
} else {
|
|
addrp = NULL;
|
|
ai = NULL; /* XXXGCC -Wuninitialized */
|
|
addrlen = 0; /* XXXGCC -Wuninitialized */
|
|
}
|
|
done = FALSE;
|
|
while (!done) {
|
|
struct mountd_exports_list mel;
|
|
|
|
switch (grp->gr_type) {
|
|
case GT_HOST:
|
|
if (addrp != NULL && addrp->sa_family == AF_INET6 &&
|
|
have_v6 == 0)
|
|
goto skip;
|
|
export.ex_addr = addrp;
|
|
export.ex_addrlen = addrlen;
|
|
export.ex_masklen = 0;
|
|
break;
|
|
case GT_NET:
|
|
export.ex_addr = (struct sockaddr *)
|
|
&grp->gr_ptr.gt_net.nt_net;
|
|
if (export.ex_addr->sa_family == AF_INET6 &&
|
|
have_v6 == 0)
|
|
goto skip;
|
|
export.ex_addrlen = export.ex_addr->sa_len;
|
|
memset(&ss, 0, sizeof ss);
|
|
ss.ss_family = export.ex_addr->sa_family;
|
|
ss.ss_len = export.ex_addr->sa_len;
|
|
if (allones(&ss, grp->gr_ptr.gt_net.nt_len) != 0) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Bad network flag",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
}
|
|
export.ex_mask = (struct sockaddr *)&ss;
|
|
export.ex_masklen = ss.ss_len;
|
|
break;
|
|
default:
|
|
syslog(LOG_ERR, "\"%s\", line %ld: Bad netgroup type",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
};
|
|
|
|
/*
|
|
* XXX:
|
|
* Maybe I should just use the fsb->f_mntonname path?
|
|
*/
|
|
|
|
mel.mel_path = dirp;
|
|
mel.mel_nexports = 1;
|
|
mel.mel_exports = &export;
|
|
|
|
if (rump_sys_nfssvc(NFSSVC_SETEXPORTSLIST, &mel) != 0) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: Can't change attributes for %s to %s: %m %d",
|
|
line, (unsigned long)lineno,
|
|
dirp, (grp->gr_type == GT_HOST) ?
|
|
grp->gr_ptr.gt_addrinfo->ai_canonname :
|
|
(grp->gr_type == GT_NET) ?
|
|
grp->gr_ptr.gt_net.nt_name :
|
|
"Unknown", errno);
|
|
return (1);
|
|
}
|
|
skip:
|
|
if (addrp) {
|
|
ai = ai->ai_next;
|
|
if (ai == NULL)
|
|
done = TRUE;
|
|
else {
|
|
addrp = ai->ai_addr;
|
|
addrlen = ai->ai_addrlen;
|
|
}
|
|
} else
|
|
done = TRUE;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Translate a net address.
|
|
*/
|
|
static int
|
|
get_net(cp, net, maskflg)
|
|
char *cp;
|
|
struct netmsk *net;
|
|
int maskflg;
|
|
{
|
|
struct netent *np;
|
|
char *thename, *p, *prefp;
|
|
struct sockaddr_in sin, *sinp;
|
|
struct sockaddr *sa;
|
|
struct addrinfo hints, *ai = NULL;
|
|
char netname[NI_MAXHOST];
|
|
long preflen;
|
|
int ecode;
|
|
|
|
(void)memset(&sin, 0, sizeof(sin));
|
|
if ((opt_flags & OP_MASKLEN) && !maskflg) {
|
|
p = strchr(cp, '/');
|
|
*p = '\0';
|
|
prefp = p + 1;
|
|
} else {
|
|
p = NULL; /* XXXGCC -Wuninitialized */
|
|
prefp = NULL; /* XXXGCC -Wuninitialized */
|
|
}
|
|
|
|
if ((np = getnetbyname(cp)) != NULL) {
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_len = sizeof sin;
|
|
sin.sin_addr = inet_makeaddr(np->n_net, 0);
|
|
sa = (struct sockaddr *)&sin;
|
|
} else if (isdigit((unsigned char)*cp)) {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
if (getaddrinfo(cp, NULL, &hints, &ai) != 0) {
|
|
/*
|
|
* If getaddrinfo() failed, try the inet4 network
|
|
* notation with less than 3 dots.
|
|
*/
|
|
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 %x\n",
|
|
sin.sin_addr.s_addr);
|
|
sa = (struct sockaddr *)&sin;
|
|
} else
|
|
sa = ai->ai_addr;
|
|
} else if (isxdigit((unsigned char)*cp) || *cp == ':') {
|
|
memset(&hints, 0, sizeof hints);
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
|
|
sa = ai->ai_addr;
|
|
else
|
|
goto fail;
|
|
} else
|
|
goto fail;
|
|
|
|
/*
|
|
* Only allow /pref notation for v6 addresses.
|
|
*/
|
|
if (sa->sa_family == AF_INET6 && (!(opt_flags & OP_MASKLEN) || maskflg))
|
|
return 1;
|
|
|
|
ecode = getnameinfo(sa, sa->sa_len, netname, sizeof netname,
|
|
NULL, 0, ninumeric);
|
|
if (ecode != 0)
|
|
goto fail;
|
|
|
|
if (maskflg)
|
|
net->nt_len = countones(sa);
|
|
else {
|
|
if (opt_flags & OP_MASKLEN) {
|
|
errno = 0;
|
|
preflen = strtol(prefp, NULL, 10);
|
|
if (preflen == LONG_MIN && errno == ERANGE)
|
|
goto fail;
|
|
net->nt_len = (int)preflen;
|
|
*p = '/';
|
|
}
|
|
|
|
if (np)
|
|
thename = np->n_name;
|
|
else {
|
|
if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
|
|
NULL, 0, ninumeric) != 0)
|
|
strlcpy(netname, "?", sizeof(netname));
|
|
thename = netname;
|
|
}
|
|
net->nt_name = estrdup(thename);
|
|
memcpy(&net->nt_net, sa, sa->sa_len);
|
|
}
|
|
|
|
if (!maskflg && sa->sa_family == AF_INET &&
|
|
!(opt_flags & (OP_MASK|OP_MASKLEN))) {
|
|
sinp = (struct sockaddr_in *)sa;
|
|
if (IN_CLASSA(sinp->sin_addr.s_addr))
|
|
net->nt_len = 8;
|
|
else if (IN_CLASSB(sinp->sin_addr.s_addr))
|
|
net->nt_len = 16;
|
|
else if (IN_CLASSC(sinp->sin_addr.s_addr))
|
|
net->nt_len = 24;
|
|
else if (IN_CLASSD(sinp->sin_addr.s_addr))
|
|
net->nt_len = 28;
|
|
else
|
|
net->nt_len = 32; /* XXX */
|
|
}
|
|
|
|
if (ai)
|
|
freeaddrinfo(ai);
|
|
return 0;
|
|
|
|
fail:
|
|
if (ai)
|
|
freeaddrinfo(ai);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Parse out the next white space separated field
|
|
*/
|
|
static void
|
|
nextfield(cp, endcp)
|
|
char **cp;
|
|
char **endcp;
|
|
{
|
|
char *p;
|
|
|
|
p = *cp;
|
|
while (*p == ' ' || *p == '\t')
|
|
p++;
|
|
if (*p == '\n' || *p == '\0')
|
|
*cp = *endcp = p;
|
|
else {
|
|
*cp = p++;
|
|
while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0')
|
|
p++;
|
|
*endcp = p;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse a description of a credential.
|
|
*/
|
|
static void
|
|
parsecred(namelist, cr)
|
|
char *namelist;
|
|
struct uucred *cr;
|
|
{
|
|
char *thename;
|
|
int cnt;
|
|
char *names;
|
|
struct passwd *pw;
|
|
struct group *gr;
|
|
int ngroups;
|
|
gid_t grps[NGROUPS + 1];
|
|
|
|
/*
|
|
* Set up the unprivileged user.
|
|
*/
|
|
*cr = def_anon;
|
|
/*
|
|
* Get the user's password table entry.
|
|
*/
|
|
names = strsep(&namelist, " \t\n");
|
|
thename = strsep(&names, ":");
|
|
if (isdigit((unsigned char)*thename) || *thename == '-')
|
|
pw = getpwuid(atoi(thename));
|
|
else
|
|
pw = getpwnam(thename);
|
|
/*
|
|
* Credentials specified as those of a user.
|
|
*/
|
|
if (names == NULL) {
|
|
if (pw == NULL) {
|
|
syslog(LOG_ERR, "Unknown user: %s", thename);
|
|
return;
|
|
}
|
|
cr->cr_uid = pw->pw_uid;
|
|
ngroups = NGROUPS + 1;
|
|
if (getgrouplist(pw->pw_name, pw->pw_gid, grps, &ngroups))
|
|
syslog(LOG_ERR, "Too many groups for user %s", thename);
|
|
/*
|
|
* Convert from int's to gid_t's and compress out duplicate
|
|
*/
|
|
cr->cr_ngroups = ngroups - 1;
|
|
cr->cr_gid = grps[0];
|
|
for (cnt = 1; cnt < ngroups; cnt++)
|
|
cr->cr_groups[cnt - 1] = grps[cnt];
|
|
return;
|
|
}
|
|
/*
|
|
* Explicit credential specified as a colon separated list:
|
|
* uid:gid:gid:...
|
|
*/
|
|
if (pw != NULL)
|
|
cr->cr_uid = pw->pw_uid;
|
|
else if (isdigit((unsigned char)*thename) || *thename == '-')
|
|
cr->cr_uid = atoi(thename);
|
|
else {
|
|
syslog(LOG_ERR, "Unknown user: %s", thename);
|
|
return;
|
|
}
|
|
cr->cr_ngroups = 0;
|
|
while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) {
|
|
thename = strsep(&names, ":");
|
|
if (isdigit((unsigned char)*thename) || *thename == '-') {
|
|
cr->cr_groups[cr->cr_ngroups++] = atoi(thename);
|
|
} else {
|
|
if ((gr = getgrnam(thename)) == NULL) {
|
|
syslog(LOG_ERR, "Unknown group: %s", thename);
|
|
continue;
|
|
}
|
|
cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid;
|
|
}
|
|
}
|
|
if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS)
|
|
syslog(LOG_ERR, "Too many groups");
|
|
}
|
|
|
|
#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50)
|
|
/*
|
|
* Routines that maintain the remote mounttab
|
|
*/
|
|
static void
|
|
get_mountlist()
|
|
{
|
|
struct mountlist *mlp, **mlpp;
|
|
char *host, *dirp, *cp;
|
|
char str[STRSIZ];
|
|
FILE *mlfile;
|
|
|
|
if ((mlfile = rumpfopen(_PATH_RMOUNTLIST, "r")) == NULL) {
|
|
syslog(LOG_ERR, "Can't open %s: %m", _PATH_RMOUNTLIST);
|
|
return;
|
|
}
|
|
mlpp = &mlhead;
|
|
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 = emalloc(sizeof(*mlp));
|
|
(void)strncpy(mlp->ml_host, host, RPCMNT_NAMELEN);
|
|
mlp->ml_host[RPCMNT_NAMELEN] = '\0';
|
|
(void)strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN);
|
|
mlp->ml_dirp[RPCMNT_PATHLEN] = '\0';
|
|
mlp->ml_next = NULL;
|
|
*mlpp = mlp;
|
|
mlpp = &mlp->ml_next;
|
|
}
|
|
(void)fclose(mlfile);
|
|
}
|
|
|
|
static int
|
|
del_mlist(hostp, dirp, saddr)
|
|
char *hostp, *dirp;
|
|
struct sockaddr *saddr;
|
|
{
|
|
struct mountlist *mlp, **mlpp;
|
|
struct mountlist *mlp2;
|
|
u_short sport;
|
|
FILE *mlfile;
|
|
int fnd = 0, ret = 0;
|
|
char host[NI_MAXHOST];
|
|
|
|
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:
|
|
return -1;
|
|
}
|
|
mlpp = &mlhead;
|
|
mlp = mlhead;
|
|
while (mlp) {
|
|
if (!strcmp(mlp->ml_host, hostp) &&
|
|
(!dirp || !strcmp(mlp->ml_dirp, dirp))) {
|
|
if (!(mlp->ml_flag & DP_NORESMNT) &&
|
|
sport >= IPPORT_RESERVED) {
|
|
if (getnameinfo(saddr, saddr->sa_len, host,
|
|
sizeof host, NULL, 0, ninumeric) != 0)
|
|
strlcpy(host, "?", sizeof(host));
|
|
syslog(LOG_NOTICE,
|
|
"Umount request for %s:%s from %s refused\n",
|
|
mlp->ml_host, mlp->ml_dirp, host);
|
|
ret = -1;
|
|
goto cont;
|
|
}
|
|
fnd = 1;
|
|
mlp2 = mlp;
|
|
*mlpp = mlp = mlp->ml_next;
|
|
free(mlp2);
|
|
} else {
|
|
cont:
|
|
mlpp = &mlp->ml_next;
|
|
mlp = mlp->ml_next;
|
|
}
|
|
}
|
|
if (fnd) {
|
|
if ((mlfile = rumpfopen(_PATH_RMOUNTLIST, "w")) == NULL) {
|
|
syslog(LOG_ERR, "Can't update %s: %m",
|
|
_PATH_RMOUNTLIST);
|
|
return ret;
|
|
}
|
|
mlp = mlhead;
|
|
while (mlp) {
|
|
(void)fprintf(mlfile, "%s %s\n", mlp->ml_host,
|
|
mlp->ml_dirp);
|
|
mlp = mlp->ml_next;
|
|
}
|
|
(void)fclose(mlfile);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
add_mlist(hostp, dirp, flags)
|
|
char *hostp, *dirp;
|
|
int flags;
|
|
{
|
|
struct mountlist *mlp, **mlpp;
|
|
FILE *mlfile;
|
|
|
|
mlpp = &mlhead;
|
|
mlp = mlhead;
|
|
while (mlp) {
|
|
if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
|
|
return;
|
|
mlpp = &mlp->ml_next;
|
|
mlp = mlp->ml_next;
|
|
}
|
|
mlp = emalloc(sizeof(*mlp));
|
|
strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN);
|
|
mlp->ml_host[RPCMNT_NAMELEN] = '\0';
|
|
strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN);
|
|
mlp->ml_dirp[RPCMNT_PATHLEN] = '\0';
|
|
mlp->ml_flag = flags;
|
|
mlp->ml_next = NULL;
|
|
*mlpp = mlp;
|
|
if ((mlfile = rumpfopen(_PATH_RMOUNTLIST, "a")) == NULL) {
|
|
syslog(LOG_ERR, "Can't update %s: %m", _PATH_RMOUNTLIST);
|
|
return;
|
|
}
|
|
(void)fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
|
|
(void)fclose(mlfile);
|
|
}
|
|
|
|
/*
|
|
* This function is called via. SIGTERM when the system is going down.
|
|
* It sends a broadcast RPCMNT_UMNTALL.
|
|
*/
|
|
/* ARGSUSED */
|
|
static void
|
|
send_umntall(n)
|
|
int n;
|
|
{
|
|
#if 0
|
|
(void)clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL,
|
|
xdr_void, NULL, xdr_void, NULL, (resultproc_t)umntall_each);
|
|
#endif
|
|
exit(0);
|
|
}
|
|
|
|
#if 0
|
|
static int
|
|
umntall_each(resultsp, raddr)
|
|
caddr_t resultsp;
|
|
struct sockaddr_in *raddr;
|
|
{
|
|
return (1);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Free up a group list.
|
|
*/
|
|
static void
|
|
free_grp(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);
|
|
}
|
|
free(grp);
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
SYSLOG(int pri, const char *fmt,...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
|
|
if (debug)
|
|
vfprintf(stderr, fmt, ap);
|
|
else
|
|
vsyslog(pri, fmt, ap);
|
|
|
|
va_end(ap);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Check options for consistency.
|
|
*/
|
|
static int
|
|
check_options(line, lineno, dp)
|
|
const char *line;
|
|
size_t lineno;
|
|
struct dirlist *dp;
|
|
{
|
|
|
|
if (dp == NULL) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: missing directory list",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
}
|
|
if ((opt_flags & (OP_MAPROOT|OP_MAPALL)) == (OP_MAPROOT|OP_MAPALL) ||
|
|
(opt_flags & (OP_MAPROOT|OP_KERB)) == (OP_MAPROOT|OP_KERB) ||
|
|
(opt_flags & (OP_MAPALL|OP_KERB)) == (OP_MAPALL|OP_KERB)) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: -mapall, -maproot and -kerb mutually exclusive",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
|
|
syslog(LOG_ERR, "\"%s\", line %ld: -mask requires -net",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN) != 0) {
|
|
syslog(LOG_ERR, "\"%s\", line %ld: /pref and -mask mutually"
|
|
" exclusive",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
}
|
|
if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: -alldirs has multiple directories",
|
|
line, (unsigned long)lineno);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check an absolute directory path for any symbolic links. Return true
|
|
* if no symbolic links are found.
|
|
*/
|
|
static int
|
|
check_dirpath(line, lineno, dirp)
|
|
const char *line;
|
|
size_t lineno;
|
|
char *dirp;
|
|
{
|
|
char *cp;
|
|
struct stat sb;
|
|
char *file = "";
|
|
|
|
for (cp = dirp + 1; *cp; cp++) {
|
|
if (*cp == '/') {
|
|
*cp = '\0';
|
|
if (rump_sys_lstat(dirp, &sb) == -1)
|
|
goto bad;
|
|
if (!S_ISDIR(sb.st_mode))
|
|
goto bad1;
|
|
*cp = '/';
|
|
}
|
|
}
|
|
|
|
cp = NULL;
|
|
if (rump_sys_lstat(dirp, &sb) == -1)
|
|
goto bad;
|
|
|
|
if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) {
|
|
file = " file or a";
|
|
goto bad1;
|
|
}
|
|
|
|
return 1;
|
|
|
|
bad:
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: lstat for `%s' failed: %m",
|
|
line, (unsigned long)lineno, dirp);
|
|
if (cp)
|
|
*cp = '/';
|
|
return 0;
|
|
|
|
bad1:
|
|
syslog(LOG_ERR,
|
|
"\"%s\", line %ld: `%s' is not a%s directory",
|
|
line, (unsigned long)lineno, dirp, file);
|
|
abort();
|
|
if (cp)
|
|
*cp = '/';
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
bind_resv_port(int sock, sa_family_t family, in_port_t port)
|
|
{
|
|
struct sockaddr *sa;
|
|
struct sockaddr_in sasin;
|
|
struct sockaddr_in6 sasin6;
|
|
|
|
switch (family) {
|
|
case AF_INET:
|
|
(void)memset(&sasin, 0, sizeof(sasin));
|
|
sasin.sin_len = sizeof(sasin);
|
|
sasin.sin_family = family;
|
|
sasin.sin_port = htons(port);
|
|
sa = (struct sockaddr *)(void *)&sasin;
|
|
break;
|
|
case AF_INET6:
|
|
(void)memset(&sasin6, 0, sizeof(sasin6));
|
|
sasin6.sin6_len = sizeof(sasin6);
|
|
sasin6.sin6_family = family;
|
|
sasin6.sin6_port = htons(port);
|
|
sa = (struct sockaddr *)(void *)&sasin6;
|
|
break;
|
|
default:
|
|
syslog(LOG_ERR, "Unsupported address family %d", family);
|
|
return;
|
|
}
|
|
if (bindresvport_sa(sock, sa) == -1)
|
|
syslog(LOG_ERR, "Cannot bind to reserved port %d (%m)", port);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
no_nfs(int sig)
|
|
{
|
|
syslog(LOG_ERR, "kernel NFS support not present; exiting");
|
|
exit(1);
|
|
}
|