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NetBSD/usr.sbin/amd/amq/amq.c

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/* $NetBSD: amq.c,v 1.13 1999/09/04 22:38:18 christos Exp $ */
/*
* Copyright (c) 1997-1999 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* %W% (Berkeley) %G%
*
* Id: amq.c,v 1.5 1999/08/24 21:31:07 ezk Exp
*
*/
/*
* Automounter query tool
*/
#include <sys/cdefs.h>
#ifndef lint
char copyright[] = "\
@(#)Copyright (c) 1997-1999 Erez Zadok\n\
@(#)Copyright (c) 1990 Jan-Simon Pendry\n\
@(#)Copyright (c) 1990 Imperial College of Science, Technology & Medicine\n\
@(#)Copyright (c) 1990 The Regents of the University of California.\n\
@(#)All rights reserved.\n";
#if __GNUC__ < 2
static char rcsid[] = "Id: amq.c,v 1.5 1999/08/24 21:31:07 ezk Exp ";
static char sccsid[] = "%W% (Berkeley) %G%";
#else
__RCSID("$NetBSD: amq.c,v 1.13 1999/09/04 22:38:18 christos Exp $");
#endif
#endif /* not lint */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amq.h>
/* locals */
static int flush_flag;
static int minfo_flag;
static int getpid_flag;
static int unmount_flag;
static int stats_flag;
static int getvers_flag;
static int amd_program_number = AMQ_PROGRAM;
static int use_tcp_flag, use_udp_flag;
static char *debug_opts;
static char *amq_logfile;
static char *mount_map;
static char *xlog_optstr;
static char localhost[] = "localhost";
static char *def_server = localhost;
/* externals */
extern int optind;
extern char *optarg;
/* forward declarations */
#ifdef HAVE_TRANSPORT_TYPE_TLI
static CLIENT *get_secure_amd_client(char *host, struct timeval *tv, int *sock);
static int amq_bind_resv_port(int td, u_short *pp);
#else /* not HAVE_TRANSPORT_TYPE_TLI */
static int privsock(int ty);
#endif /* not HAVE_TRANSPORT_TYPE_TLI */
/* structures */
enum show_opt {
Full, Stats, Calc, Short, ShowDone
};
/*
* If (e) is Calc then just calculate the sizes
* Otherwise display the mount node on stdout
*/
static void
show_mti(amq_mount_tree *mt, enum show_opt e, int *mwid, int *dwid, int *twid)
{
switch (e) {
case Calc:
{
int mw = strlen(mt->mt_mountinfo);
int dw = strlen(mt->mt_directory);
int tw = strlen(mt->mt_type);
if (mw > *mwid)
*mwid = mw;
if (dw > *dwid)
*dwid = dw;
if (tw > *twid)
*twid = tw;
}
break;
case Full:
{
struct tm *tp = localtime((time_t *) &mt->mt_mounttime);
printf("%-*.*s %-*.*s %-*.*s %s\n\t%-5d %-7d %-6d %-7d %-7d %-6d %02d/%02d/%02d %02d:%02d:%02d\n",
*dwid, *dwid,
*mt->mt_directory ? mt->mt_directory : "/", /* XXX */
*twid, *twid,
mt->mt_type,
*mwid, *mwid,
mt->mt_mountinfo,
mt->mt_mountpoint,
mt->mt_mountuid,
mt->mt_getattr,
mt->mt_lookup,
mt->mt_readdir,
mt->mt_readlink,
mt->mt_statfs,
tp->tm_year > 99 ? tp->tm_year - 100 : tp->tm_year,
tp->tm_mon + 1, tp->tm_mday,
tp->tm_hour, tp->tm_min, tp->tm_sec);
}
break;
case Stats:
{
struct tm *tp = localtime((time_t *) &mt->mt_mounttime);
printf("%-*.*s %-5d %-7d %-6d %-7d %-7d %-6d %02d/%02d/%02d %02d:%02d:%02d\n",
*dwid, *dwid,
*mt->mt_directory ? mt->mt_directory : "/", /* XXX */
mt->mt_mountuid,
mt->mt_getattr,
mt->mt_lookup,
mt->mt_readdir,
mt->mt_readlink,
mt->mt_statfs,
tp->tm_year > 99 ? tp->tm_year - 100 : tp->tm_year,
tp->tm_mon + 1, tp->tm_mday,
tp->tm_hour, tp->tm_min, tp->tm_sec);
}
break;
case Short:
{
printf("%-*.*s %-*.*s %-*.*s %s\n",
*dwid, *dwid,
*mt->mt_directory ? mt->mt_directory : "/",
*twid, *twid,
mt->mt_type,
*mwid, *mwid,
mt->mt_mountinfo,
mt->mt_mountpoint);
}
break;
default:
break;
}
}
/*
* Display a mount tree.
*/
static void
show_mt(amq_mount_tree *mt, enum show_opt e, int *mwid, int *dwid, int *pwid)
{
while (mt) {
show_mti(mt, e, mwid, dwid, pwid);
show_mt(mt->mt_next, e, mwid, dwid, pwid);
mt = mt->mt_child;
}
}
static void
show_mi(amq_mount_info_list *ml, enum show_opt e, int *mwid, int *dwid, int *twid)
{
int i;
switch (e) {
case Calc:
{
for (i = 0; i < ml->amq_mount_info_list_len; i++) {
amq_mount_info *mi = &ml->amq_mount_info_list_val[i];
int mw = strlen(mi->mi_mountinfo);
int dw = strlen(mi->mi_mountpt);
int tw = strlen(mi->mi_type);
if (mw > *mwid)
*mwid = mw;
if (dw > *dwid)
*dwid = dw;
if (tw > *twid)
*twid = tw;
}
}
break;
case Full:
{
for (i = 0; i < ml->amq_mount_info_list_len; i++) {
amq_mount_info *mi = &ml->amq_mount_info_list_val[i];
printf("%-*.*s %-*.*s %-*.*s %-3d %s is %s",
*mwid, *mwid, mi->mi_mountinfo,
*dwid, *dwid, mi->mi_mountpt,
*twid, *twid, mi->mi_type,
mi->mi_refc, mi->mi_fserver,
mi->mi_up > 0 ? "up" :
mi->mi_up < 0 ? "starting" : "down");
if (mi->mi_error > 0) {
#ifdef HAVE_STRERROR
printf(" (%s)", strerror(mi->mi_error));
#else
extern int sys_nerr;
if (mi->mi_error < sys_nerr)
printf(" (%s)", sys_errlist[mi->mi_error]);
else
printf(" (Error %d)", mi->mi_error);
#endif
} else if (mi->mi_error < 0) {
fputs(" (in progress)", stdout);
}
fputc('\n', stdout);
}
}
break;
default:
break;
}
}
/*
* Display general mount statistics
*/
static void
show_ms(amq_mount_stats *ms)
{
printf("\
requests stale mount mount unmount\n\
deferred fhandles ok failed failed\n\
%-9d %-9d %-9d %-9d %-9d\n",
ms->as_drops, ms->as_stale, ms->as_mok, ms->as_merr, ms->as_uerr);
}
#if defined(HAVE_CLUSTER_H) && defined(HAVE_CNODEID) && defined(HAVE_GETCCENT)
static char *
cluster_server(void)
{
struct cct_entry *cp;
if (cnodeid() == 0) {
/*
* Not clustered
*/
return def_server;
}
while (cp = getccent())
if (cp->cnode_type == 'r')
return cp->cnode_name;
return def_server;
}
#endif /* defined(HAVE_CLUSTER_H) && defined(HAVE_CNODEID) && defined(HAVE_GETCCENT) */
/*
* MAIN
*/
int
main(int argc, char *argv[])
{
int opt_ch;
int errs = 0;
char *server;
struct sockaddr_in server_addr;
int s; /* to pass the Amd security check, we must use a priv port */
CLIENT *clnt = NULL;
struct hostent *hp;
int nodefault = 0;
struct timeval tv;
char *progname = NULL;
#ifndef HAVE_TRANSPORT_TYPE_TLI
enum clnt_stat cs;
#endif /* not HAVE_TRANSPORT_TYPE_TLI */
/*
* Compute program name
*/
if (argv[0]) {
progname = strrchr(argv[0], '/');
if (progname && progname[1])
progname++;
else
progname = argv[0];
}
if (!progname)
progname = "amq";
am_set_progname(progname);
/*
* Parse arguments
*/
#ifdef ENABLE_AMQ_MOUNT
while ((opt_ch = getopt(argc, argv, "fh:l:msuvx:D:M:pP:TU")) != -1)
#else /* not ENABLE_AMQ_MOUNT */
while ((opt_ch = getopt(argc, argv, "fh:l:msuvx:D:pP:TU")) != -1)
#endif /* not ENABLE_AMQ_MOUNT */
switch (opt_ch) {
case 'f':
flush_flag = 1;
nodefault = 1;
break;
case 'h':
def_server = optarg;
break;
case 'l':
amq_logfile = optarg;
nodefault = 1;
break;
case 'm':
minfo_flag = 1;
nodefault = 1;
break;
case 'p':
getpid_flag = 1;
nodefault = 1;
break;
case 's':
stats_flag = 1;
nodefault = 1;
break;
case 'u':
unmount_flag = 1;
nodefault = 1;
break;
case 'v':
getvers_flag = 1;
nodefault = 1;
break;
case 'x':
xlog_optstr = optarg;
nodefault = 1;
break;
case 'D':
debug_opts = optarg;
nodefault = 1;
break;
#ifdef ENABLE_AMQ_MOUNT
case 'M':
mount_map = optarg;
nodefault = 1;
break;
#endif /* ENABLE_AMQ_MOUNT */
case 'P':
amd_program_number = atoi(optarg);
break;
case 'T':
use_tcp_flag = 1;
break;
case 'U':
use_udp_flag = 1;
break;
default:
errs = 1;
break;
}
if (optind == argc) {
if (unmount_flag)
errs = 1;
}
if (errs) {
show_usage:
fprintf(stderr, "\
Usage: %s [-h host] [[-f] [-m] [-p] [-v] [-s]] | [[-u] directory ...]]\n\
\t[-l logfile|\"syslog\"] [-x log_flags] [-D dbg_opts]%s\n\
\t[-P prognum] [-T] [-U]\n",
am_get_progname(),
#ifdef ENABLE_AMQ_MOUNT
" [-M mapent]"
#else /* not ENABLE_AMQ_MOUNT */
""
#endif /* not ENABLE_AMQ_MOUNT */
);
exit(1);
}
/* set use_udp and use_tcp flags both to on if none are defined */
if (!use_tcp_flag && !use_udp_flag)
use_tcp_flag = use_udp_flag = 1;
#if defined(HAVE_CLUSTER_H) && defined(HAVE_CNODEID) && defined(HAVE_GETCCENT)
/*
* Figure out root server of cluster
*/
if (def_server == localhost)
server = cluster_server();
else
#endif /* defined(HAVE_CLUSTER_H) && defined(HAVE_CNODEID) && defined(HAVE_GETCCENT) */
server = def_server;
/*
* Get address of server
*/
if ((hp = gethostbyname(server)) == 0 && !STREQ(server, localhost)) {
fprintf(stderr, "%s: Can't get address of %s\n",
am_get_progname(), server);
exit(1);
}
memset(&server_addr, 0, sizeof server_addr);
server_addr.sin_family = AF_INET;
if (hp) {
memmove((voidp) &server_addr.sin_addr, (voidp) hp->h_addr,
sizeof(server_addr.sin_addr));
} else {
/* fake "localhost" */
server_addr.sin_addr.s_addr = htonl(0x7f000001);
}
/*
* Create RPC endpoint
*/
tv.tv_sec = 5; /* 5 seconds for timeout or per retry */
tv.tv_usec = 0;
#ifdef HAVE_TRANSPORT_TYPE_TLI
clnt = get_secure_amd_client(server, &tv, &s);
if (!clnt && use_tcp_flag) /* try tcp first */
clnt = clnt_create(server, amd_program_number, AMQ_VERSION, "tcp");
if (!clnt && use_udp_flag) { /* try udp next */
clnt = clnt_create(server, amd_program_number, AMQ_VERSION, "udp");
/* if ok, set timeout (valid for connectionless transports only) */
if (clnt)
clnt_control(clnt, CLSET_RETRY_TIMEOUT, (char *) &tv);
}
#else /* not HAVE_TRANSPORT_TYPE_TLI */
/* first check if remote portmapper is up */
cs = pmap_ping(&server_addr);
if (cs == RPC_TIMEDOUT) {
fprintf(stderr, "%s: failed to contact portmapper on host \"%s\". %s\n",
am_get_progname(), server, clnt_sperrno(cs));
exit(1);
}
/* portmapper exists: get remote amd info from it */
if (!clnt && use_tcp_flag) { /* try tcp first */
s = RPC_ANYSOCK;
clnt = clnttcp_create(&server_addr, amd_program_number,
AMQ_VERSION, &s, 0, 0);
}
if (!clnt && use_udp_flag) { /* try udp next */
/* XXX: do we need to close(s) ? */
s = privsock(SOCK_DGRAM);
clnt = clntudp_create(&server_addr, amd_program_number,
AMQ_VERSION, tv, &s);
}
#endif /* not HAVE_TRANSPORT_TYPE_TLI */
if (!clnt) {
fprintf(stderr, "%s: ", am_get_progname());
clnt_pcreateerror(server);
exit(1);
}
/*
* Control debugging
*/
if (debug_opts) {
int *rc;
amq_setopt opt;
opt.as_opt = AMOPT_DEBUG;
opt.as_str = debug_opts;
rc = amqproc_setopt_1(&opt, clnt);
if (rc && *rc < 0) {
fprintf(stderr, "%s: daemon not compiled for debug\n",
am_get_progname());
errs = 1;
} else if (!rc || *rc > 0) {
fprintf(stderr, "%s: debug setting for \"%s\" failed\n",
am_get_progname(), debug_opts);
errs = 1;
}
}
/*
* Control logging
*/
if (xlog_optstr) {
int *rc;
amq_setopt opt;
opt.as_opt = AMOPT_XLOG;
opt.as_str = xlog_optstr;
rc = amqproc_setopt_1(&opt, clnt);
if (!rc || *rc) {
fprintf(stderr, "%s: setting log level to \"%s\" failed\n",
am_get_progname(), xlog_optstr);
errs = 1;
}
}
/*
* Control log file
*/
if (amq_logfile) {
int *rc;
amq_setopt opt;
opt.as_opt = AMOPT_LOGFILE;
opt.as_str = amq_logfile;
rc = amqproc_setopt_1(&opt, clnt);
if (!rc || *rc) {
fprintf(stderr, "%s: setting logfile to \"%s\" failed\n",
am_get_progname(), amq_logfile);
errs = 1;
}
}
/*
* Flush map cache
*/
if (flush_flag) {
int *rc;
amq_setopt opt;
opt.as_opt = AMOPT_FLUSHMAPC;
opt.as_str = "";
rc = amqproc_setopt_1(&opt, clnt);
if (!rc || *rc) {
fprintf(stderr, "%s: amd on %s cannot flush the map cache\n",
am_get_progname(), server);
errs = 1;
}
}
/*
* Mount info
*/
if (minfo_flag) {
int dummy;
amq_mount_info_list *ml = amqproc_getmntfs_1(&dummy, clnt);
if (ml) {
int mwid = 0, dwid = 0, twid = 0;
show_mi(ml, Calc, &mwid, &dwid, &twid);
mwid++;
dwid++;
twid++;
show_mi(ml, Full, &mwid, &dwid, &twid);
} else {
fprintf(stderr, "%s: amd on %s cannot provide mount info\n",
am_get_progname(), server);
}
}
/*
* Mount map
*/
if (mount_map) {
int *rc;
do {
rc = amqproc_mount_1(&mount_map, clnt);
} while (rc && *rc < 0);
if (!rc || *rc > 0) {
if (rc)
errno = *rc;
else
errno = ETIMEDOUT;
fprintf(stderr, "%s: could not start new ", am_get_progname());
perror("automount point");
}
}
/*
* Get Version
*/
if (getvers_flag) {
amq_string *spp = amqproc_getvers_1((voidp) 0, clnt);
if (spp && *spp) {
fputs(*spp, stdout);
XFREE(*spp);
} else {
fprintf(stderr, "%s: failed to get version information\n",
am_get_progname());
errs = 1;
}
}
/*
* Get PID of amd
*/
if (getpid_flag) {
int *ip = amqproc_getpid_1((voidp) 0, clnt);
if (ip && *ip) {
printf("%d\n", *ip);
} else {
fprintf(stderr, "%s: failed to get PID of amd\n", am_get_progname());
errs = 1;
}
}
/*
* Apply required operation to all remaining arguments
*/
if (optind < argc) {
do {
char *fs = argv[optind++];
if (unmount_flag) {
/*
* Unmount request
*/
amqproc_umnt_1(&fs, clnt);
} else {
/*
* Stats request
*/
amq_mount_tree_p *mtp = amqproc_mnttree_1(&fs, clnt);
if (mtp) {
amq_mount_tree *mt = *mtp;
if (mt) {
int mwid = 0, dwid = 0, twid = 0;
show_mt(mt, Calc, &mwid, &dwid, &twid);
mwid++;
dwid++, twid++;
printf("%-*.*s Uid Getattr Lookup RdDir RdLnk Statfs Mounted@\n",
dwid, dwid, "What");
show_mt(mt, Stats, &mwid, &dwid, &twid);
} else {
fprintf(stderr, "%s: %s not automounted\n", am_get_progname(), fs);
}
xdr_pri_free((XDRPROC_T_TYPE) xdr_amq_mount_tree_p, (caddr_t) mtp);
} else {
fprintf(stderr, "%s: ", am_get_progname());
clnt_perror(clnt, server);
errs = 1;
}
}
} while (optind < argc);
} else if (unmount_flag) {
goto show_usage;
} else if (stats_flag) {
amq_mount_stats *ms = amqproc_stats_1((voidp) 0, clnt);
if (ms) {
show_ms(ms);
} else {
fprintf(stderr, "%s: ", am_get_progname());
clnt_perror(clnt, server);
errs = 1;
}
} else if (!nodefault) {
amq_mount_tree_list *mlp = amqproc_export_1((voidp) 0, clnt);
if (mlp) {
enum show_opt e = Calc;
int mwid = 0, dwid = 0, pwid = 0;
while (e != ShowDone) {
int i;
for (i = 0; i < mlp->amq_mount_tree_list_len; i++) {
show_mt(mlp->amq_mount_tree_list_val[i],
e, &mwid, &dwid, &pwid);
}
mwid++;
dwid++, pwid++;
if (e == Calc)
e = Short;
else if (e == Short)
e = ShowDone;
}
} else {
fprintf(stderr, "%s: ", am_get_progname());
clnt_perror(clnt, server);
errs = 1;
}
}
exit(errs);
return errs; /* should never reach here */
}
#ifdef HAVE_TRANSPORT_TYPE_TLI
/*
* How to bind to reserved ports.
* TLI handle (socket) and port version.
*/
/* defined here so that it does not have to resolve it with libamu.a */
static int
amq_bind_resv_port(int td, u_short *pp)
{
int rc = -1, port;
struct t_bind *treq, *tret;
struct sockaddr_in *sin;
treq = (struct t_bind *) t_alloc(td, T_BIND, T_ADDR);
if (!treq) {
plog(XLOG_ERROR, "t_alloc 1");
return -1;
}
tret = (struct t_bind *) t_alloc(td, T_BIND, T_ADDR);
if (!tret) {
t_free((char *) treq, T_BIND);
plog(XLOG_ERROR, "t_alloc 2");
return -1;
}
memset((char *) treq->addr.buf, 0, treq->addr.len);
sin = (struct sockaddr_in *) treq->addr.buf;
sin->sin_family = AF_INET;
treq->qlen = 0;
treq->addr.len = treq->addr.maxlen;
errno = EADDRINUSE;
port = IPPORT_RESERVED;
do {
--port;
sin->sin_port = htons(port);
rc = t_bind(td, treq, tret);
if (rc < 0) {
} else {
if (memcmp(treq->addr.buf, tret->addr.buf, tret->addr.len) == 0)
break;
else
t_unbind(td);
}
} while ((rc < 0 || errno == EADDRINUSE) && (int) port > IPPORT_RESERVED / 2);
if (pp) {
if (rc == 0)
*pp = port;
else
plog(XLOG_ERROR, "could not t_bind to any reserved port");
}
t_free((char *) tret, T_BIND);
t_free((char *) treq, T_BIND);
return rc;
}
/*
* Create a secure rpc client attached to the amd daemon.
*/
static CLIENT *
get_secure_amd_client(char *host, struct timeval *tv, int *sock)
{
CLIENT *client;
struct netbuf nb;
struct netconfig *nc, *pm_nc;
struct sockaddr_in sin;
nb.maxlen = sizeof(sin);
nb.buf = (char *) &sin;
/*
* Ensure that remote portmapper is alive
* (must use connectionless netconfig).
*/
if ((pm_nc = getnetconfigent(NC_UDP)) != NULL) {
enum clnt_stat cs;
cs = rpcb_rmtcall(pm_nc,
host,
amd_program_number,
AMQ_VERSION,
AMQPROC_NULL,
(XDRPROC_T_TYPE) xdr_void,
NULL,
(XDRPROC_T_TYPE) xdr_void,
NULL,
*tv,
NULL);
if (cs == RPC_TIMEDOUT) {
fprintf(stderr, "%s: failed to contact portmapper on host \"%s\". %s\n",
am_get_progname(), host, clnt_sperrno(cs));
exit(1);
}
}
/*
* First transport type to try: TCP
*/
if (use_tcp_flag) {
/* Find amd address on TCP */
nc = getnetconfigent(NC_TCP);
if (!nc) {
fprintf(stderr, "getnetconfig for tcp failed: %s\n", nc_sperror());
goto tryudp;
}
if (!rpcb_getaddr(amd_program_number, AMQ_VERSION, nc, &nb, host)) {
/*
* don't print error messages here, since amd might legitimately
* serve udp only
*/
goto tryudp;
}
/* Create privileged TCP socket */
*sock = t_open(nc->nc_device, O_RDWR, 0);
if (*sock < 0) {
fprintf(stderr, "t_open %s: %m\n", nc->nc_device);
goto tryudp;
}
if (amq_bind_resv_port(*sock, (u_short *) 0) < 0)
goto tryudp;
client = clnt_vc_create(*sock, &nb, amd_program_number, AMQ_VERSION, 0, 0);
if (!client) {
fprintf(stderr, "clnt_vc_create failed");
t_close(*sock);
goto tryudp;
}
/* tcp succeeded */
return client;
}
tryudp:
/*
* TCP failed so try UDP
*/
if (use_udp_flag) {
/* find amd address on UDP */
nc = getnetconfigent(NC_UDP);
if (!nc) {
fprintf(stderr, "getnetconfig for udp failed: %s\n", nc_sperror());
return NULL;
}
if (!rpcb_getaddr(amd_program_number, AMQ_VERSION, nc, &nb, host)) {
fprintf(stderr, "%s\n",
clnt_spcreateerror("couldn't get amd address on udp"));
return NULL;
}
/* create privileged UDP socket */
*sock = t_open(nc->nc_device, O_RDWR, 0);
if (*sock < 0) {
fprintf(stderr, "t_open %s: %m\n", nc->nc_device);
return NULL; /* neither tcp not udp succeeded */
}
if (amq_bind_resv_port(*sock, (u_short *) 0) < 0)
return NULL;
client = clnt_dg_create(*sock, &nb, amd_program_number, AMQ_VERSION, 0, 0);
if (!client) {
fprintf(stderr, "clnt_dg_create failed\n");
t_close(*sock);
return NULL; /* neither tcp not udp succeeded */
}
if (clnt_control(client, CLSET_RETRY_TIMEOUT, (char *) tv) == FALSE) {
fprintf(stderr, "clnt_control CLSET_RETRY_TIMEOUT for udp failed\n");
clnt_destroy(client);
return NULL; /* neither tcp not udp succeeded */
}
/* udp succeeded */
return client;
}
/* should never get here */
return NULL;
}
#else /* not HAVE_TRANSPORT_TYPE_TLI */
/*
* inetresport creates a datagram socket and attempts to bind it to a
* secure port.
* returns: The bound socket, or -1 to indicate an error.
*/
static int
inetresport(int ty)
{
int alport;
struct sockaddr_in addr;
int fd;
/* Use internet address family */
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
if ((fd = socket(AF_INET, ty, 0)) < 0)
return -1;
for (alport = IPPORT_RESERVED - 1; alport > IPPORT_RESERVED / 2 + 1; alport--) {
addr.sin_port = htons((u_short) alport);
if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) >= 0)
return fd;
if (errno != EADDRINUSE) {
close(fd);
return -1;
}
}
close(fd);
errno = EAGAIN;
return -1;
}
/*
* Privsock() calls inetresport() to attempt to bind a socket to a secure
* port. If inetresport() fails, privsock returns a magic socket number which
* indicates to RPC that it should make its own socket.
* returns: A privileged socket # or RPC_ANYSOCK.
*/
static int
privsock(int ty)
{
int sock = inetresport(ty);
if (sock < 0) {
errno = 0;
/* Couldn't get a secure port, let RPC make an insecure one */
sock = RPC_ANYSOCK;
}
return sock;
}
#endif /* not HAVE_TRANSPORT_TYPE_TLI */
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