175631Salfred/*- 275631Salfred * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. 375631Salfred * 475631Salfred * Redistribution and use in source and binary forms, with or without 575631Salfred * modification, are permitted provided that the following conditions 675631Salfred * are met: 775631Salfred * 1. Redistributions of source code must retain the above copyright 875631Salfred * notice, this list of conditions and the following disclaimer. 975631Salfred * 2. Redistributions in binary form must reproduce the above copyright 1075631Salfred * notice, this list of conditions and the following disclaimer in the 1175631Salfred * documentation and/or other materials provided with the distribution. 1275631Salfred * 3. Berkeley Software Design Inc's name may not be used to endorse or 1375631Salfred * promote products derived from this software without specific prior 1475631Salfred * written permission. 1575631Salfred * 1675631Salfred * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND 1775631Salfred * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1875631Salfred * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1975631Salfred * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE 2075631Salfred * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2175631Salfred * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2275631Salfred * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2375631Salfred * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2475631Salfred * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2575631Salfred * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2675631Salfred * SUCH DAMAGE. 2775631Salfred * 2875631Salfred * from BSDI kern.c,v 1.2 1998/11/25 22:38:27 don Exp 2975631Salfred */ 3075631Salfred 31146445Scharnier#include <sys/cdefs.h> 32146445Scharnier__FBSDID("$FreeBSD$"); 33146445Scharnier 3475631Salfred#include <sys/param.h> 3575631Salfred#include <sys/mount.h> 3675631Salfred#include <sys/queue.h> 3775631Salfred#include <sys/socket.h> 3875631Salfred#include <sys/stat.h> 3975631Salfred 4086299Salfred#include <netinet/in.h> 4186299Salfred#include <arpa/inet.h> 4286299Salfred 4375631Salfred#include <err.h> 4475631Salfred#include <errno.h> 4575631Salfred#include <fcntl.h> 46138431Sphk#include <paths.h> 4786279Salfred#include <pwd.h> 4875631Salfred#include <stdio.h> 4975631Salfred#include <stdlib.h> 5075631Salfred#include <string.h> 5175631Salfred#include <syslog.h> 5275631Salfred#include <unistd.h> 53100134Salfred#include <netdb.h> 5475631Salfred 5575631Salfred#include "nlm_prot.h" 5683653Speter#include <nfs/nfsproto.h> 57210456Srmacklem#include <nfs/nfs_lock.h> 5875631Salfred 5975631Salfred#include "lockd.h" 6075631Salfred#include "lockd_lock.h" 6183653Speter#include <nfsclient/nfs.h> 6275631Salfred 6386279Salfred#define DAEMON_USERNAME "daemon" 6486279Salfred 6575631Salfred/* Lock request owner. */ 6675631Salfredtypedef struct __owner { 6775631Salfred pid_t pid; /* Process ID. */ 6875631Salfred time_t tod; /* Time-of-day. */ 6975631Salfred} OWNER; 7075631Salfredstatic OWNER owner; 7175631Salfred 7275631Salfredstatic char hostname[MAXHOSTNAMELEN + 1]; /* Hostname. */ 73146445Scharnierstatic int devfd; 7475631Salfred 7586299Salfredstatic void client_cleanup(void); 76146445Scharnierstatic const char *from_addr(struct sockaddr *); 77146445Scharnierint lock_request(LOCKD_MSG *); 78101947Salfredstatic void set_auth(CLIENT *cl, struct xucred *ucred); 79146445Scharniervoid show(LOCKD_MSG *); 8075631Salfredint test_request(LOCKD_MSG *); 8175631Salfredint unlock_request(LOCKD_MSG *); 8275631Salfred 83138431Sphkstatic int 84138431Sphknfslockdans(int vers, struct lockd_ans *ansp) 85138431Sphk{ 86138431Sphk 87138431Sphk ansp->la_vers = vers; 88143723Scognet return (write(devfd, ansp, sizeof *ansp) <= 0); 89138431Sphk} 90138431Sphk 9175631Salfred/* 9275631Salfred * will break because fifo needs to be repopened when EOF'd 9375631Salfred */ 9475631Salfred#define lockd_seteuid(uid) seteuid(uid) 9575631Salfred 9675979Salfred#define d_calls (debug_level > 1) 9775979Salfred#define d_args (debug_level > 2) 9875631Salfred 99100134Salfredstatic const char * 100100134Salfredfrom_addr(saddr) 101100134Salfred struct sockaddr *saddr; 102100134Salfred{ 103100134Salfred static char inet_buf[INET6_ADDRSTRLEN]; 10475979Salfred 105100134Salfred if (getnameinfo(saddr, saddr->sa_len, inet_buf, sizeof(inet_buf), 106100134Salfred NULL, 0, NI_NUMERICHOST) == 0) 107100134Salfred return inet_buf; 108100134Salfred return "???"; 109100134Salfred} 110100134Salfred 11175631Salfredvoid 11286299Salfredclient_cleanup(void) 11375631Salfred{ 11475631Salfred (void)lockd_seteuid(0); 11575631Salfred exit(-1); 11675631Salfred} 11775631Salfred 11875631Salfred/* 11975631Salfred * client_request -- 12075631Salfred * Loop around messages from the kernel, forwarding them off to 12175631Salfred * NLM servers. 12275631Salfred */ 12375631Salfredpid_t 12475631Salfredclient_request(void) 12575631Salfred{ 12675631Salfred LOCKD_MSG msg; 127138431Sphk int nr, ret; 12875631Salfred pid_t child; 12986279Salfred uid_t daemon_uid; 13086279Salfred struct passwd *pw; 13175631Salfred 132138431Sphk /* Open the dev . */ 133138431Sphk devfd = open(_PATH_DEV _PATH_NFSLCKDEV, O_RDWR | O_NONBLOCK); 134138431Sphk if (devfd < 0) { 135138431Sphk syslog(LOG_ERR, "open: %s: %m", _PATH_NFSLCKDEV); 136138431Sphk goto err; 13775631Salfred } 138158968Srodrigc 139158968Srodrigc signal(SIGPIPE, SIG_IGN); 140158968Srodrigc 14175631Salfred /* 14275631Salfred * Create a separate process, the client code is really a separate 14375631Salfred * daemon that shares a lot of code. 14475631Salfred */ 14575631Salfred switch (child = fork()) { 14675631Salfred case -1: 14775631Salfred err(1, "fork"); 14875631Salfred case 0: 149161394Smaxim setproctitle("client"); 15075631Salfred break; 15175631Salfred default: 152161394Smaxim setproctitle("server"); 15375631Salfred return (child); 15475631Salfred } 15575631Salfred 15686299Salfred signal(SIGHUP, (sig_t)client_cleanup); 15786299Salfred signal(SIGTERM, (sig_t)client_cleanup); 15875631Salfred 15975631Salfred /* Setup. */ 16075631Salfred (void)time(&owner.tod); 16175631Salfred owner.pid = getpid(); 16275631Salfred (void)gethostname(hostname, sizeof(hostname) - 1); 16375631Salfred 16486279Salfred pw = getpwnam(DAEMON_USERNAME); 16586279Salfred if (pw == NULL) { 16686279Salfred syslog(LOG_ERR, "getpwnam: %s: %m", DAEMON_USERNAME); 16786279Salfred goto err; 16886279Salfred } 16986279Salfred daemon_uid = pw->pw_uid; 17075631Salfred /* drop our root priviledges */ 17175631Salfred (void)lockd_seteuid(daemon_uid); 17275631Salfred 17375631Salfred for (;;) { 17475631Salfred /* Read the fixed length message. */ 175138431Sphk if ((nr = read(devfd, &msg, sizeof(msg))) == sizeof(msg)) { 17675631Salfred if (d_args) 17775631Salfred show(&msg); 17875631Salfred 17975631Salfred if (msg.lm_version != LOCKD_MSG_VERSION) { 18075631Salfred syslog(LOG_ERR, 18175631Salfred "unknown msg type: %d", msg.lm_version); 18275631Salfred } 18375631Salfred /* 18475631Salfred * Send it to the NLM server and don't grant the lock 18575631Salfred * if we fail for any reason. 18675631Salfred */ 18775631Salfred switch (msg.lm_fl.l_type) { 18875631Salfred case F_RDLCK: 18975631Salfred case F_WRLCK: 19075631Salfred if (msg.lm_getlk) 19175631Salfred ret = test_request(&msg); 19275631Salfred else 19375631Salfred ret = lock_request(&msg); 19475631Salfred break; 19575631Salfred case F_UNLCK: 19675631Salfred ret = unlock_request(&msg); 19775631Salfred break; 19875631Salfred default: 19975631Salfred ret = 1; 20075631Salfred syslog(LOG_ERR, 20175631Salfred "unknown lock type: %d", msg.lm_fl.l_type); 20275631Salfred break; 20375631Salfred } 20475631Salfred if (ret) { 20575631Salfred struct lockd_ans ans; 20675631Salfred 20775631Salfred ans.la_msg_ident = msg.lm_msg_ident; 20875631Salfred ans.la_errno = EHOSTUNREACH; 20975631Salfred 21075631Salfred if (nfslockdans(LOCKD_ANS_VERSION, &ans)) { 21175631Salfred syslog((errno == EPIPE ? LOG_INFO : 21275631Salfred LOG_ERR), "process %lu: %m", 21375631Salfred (u_long)msg.lm_msg_ident.pid); 21475631Salfred } 21575631Salfred } 21675631Salfred } else if (nr == -1) { 21775631Salfred if (errno != EAGAIN) { 218138431Sphk syslog(LOG_ERR, "read: %s: %m", _PATH_NFSLCKDEV); 21975631Salfred goto err; 22075631Salfred } 22175631Salfred } else if (nr != 0) { 22275631Salfred syslog(LOG_ERR, 223138431Sphk "%s: discard %d bytes", _PATH_NFSLCKDEV, nr); 22475631Salfred } 22575631Salfred } 22675631Salfred 22775631Salfred /* Reached only on error. */ 22875631Salfrederr: 22975631Salfred (void)lockd_seteuid(0); 23075631Salfred _exit (1); 23175631Salfred} 23275631Salfred 23375631Salfredvoid 234101947Salfredset_auth(cl, xucred) 23586186Salfred CLIENT *cl; 236101947Salfred struct xucred *xucred; 23775631Salfred{ 238152549Sharti int ngroups; 239152549Sharti 240152549Sharti ngroups = xucred->cr_ngroups - 1; 241152549Sharti if (ngroups > NGRPS) 242152549Sharti ngroups = NGRPS; 24375631Salfred if (cl->cl_auth != NULL) 24475631Salfred cl->cl_auth->ah_ops->ah_destroy(cl->cl_auth); 24575631Salfred cl->cl_auth = authunix_create(hostname, 246101947Salfred xucred->cr_uid, 247101947Salfred xucred->cr_groups[0], 248152549Sharti ngroups, 249101947Salfred &xucred->cr_groups[1]); 25075631Salfred} 25175631Salfred 25275631Salfred 25375631Salfred/* 25475631Salfred * test_request -- 25575631Salfred * Convert a lock LOCKD_MSG into an NLM request, and send it off. 25675631Salfred */ 25775631Salfredint 25875631Salfredtest_request(LOCKD_MSG *msg) 25975631Salfred{ 26075631Salfred CLIENT *cli; 26175631Salfred struct timeval timeout = {0, 0}; /* No timeout, no response. */ 26275631Salfred char dummy; 26375631Salfred 26475631Salfred if (d_calls) 26575631Salfred syslog(LOG_DEBUG, "test request: %s: %s to %s", 26675631Salfred msg->lm_nfsv3 ? "V4" : "V1/3", 26775631Salfred msg->lm_fl.l_type == F_WRLCK ? "write" : "read", 268100134Salfred from_addr((struct sockaddr *)&msg->lm_addr)); 26975631Salfred 27075631Salfred if (msg->lm_nfsv3) { 27175631Salfred struct nlm4_testargs arg4; 27275631Salfred 27375631Salfred arg4.cookie.n_bytes = (char *)&msg->lm_msg_ident; 27475631Salfred arg4.cookie.n_len = sizeof(msg->lm_msg_ident); 27575631Salfred arg4.exclusive = msg->lm_fl.l_type == F_WRLCK ? 1 : 0; 27675631Salfred arg4.alock.caller_name = hostname; 27775631Salfred arg4.alock.fh.n_bytes = (char *)&msg->lm_fh; 27875631Salfred arg4.alock.fh.n_len = msg->lm_fh_len; 27975631Salfred arg4.alock.oh.n_bytes = (char *)&owner; 28075631Salfred arg4.alock.oh.n_len = sizeof(owner); 28175631Salfred arg4.alock.svid = msg->lm_msg_ident.pid; 28275631Salfred arg4.alock.l_offset = msg->lm_fl.l_start; 28375631Salfred arg4.alock.l_len = msg->lm_fl.l_len; 28475631Salfred 28575631Salfred if ((cli = get_client( 28675631Salfred (struct sockaddr *)&msg->lm_addr, 28775631Salfred NLM_VERS4)) == NULL) 28875631Salfred return (1); 28975631Salfred 29075631Salfred set_auth(cli, &msg->lm_cred); 29175631Salfred (void)clnt_call(cli, NLM_TEST_MSG, 292121558Speter (xdrproc_t)xdr_nlm4_testargs, &arg4, 293121558Speter (xdrproc_t)xdr_void, &dummy, timeout); 29475631Salfred } else { 29575631Salfred struct nlm_testargs arg; 29675631Salfred 29775631Salfred arg.cookie.n_bytes = (char *)&msg->lm_msg_ident; 29875631Salfred arg.cookie.n_len = sizeof(msg->lm_msg_ident); 29975631Salfred arg.exclusive = msg->lm_fl.l_type == F_WRLCK ? 1 : 0; 30075631Salfred arg.alock.caller_name = hostname; 30175631Salfred arg.alock.fh.n_bytes = (char *)&msg->lm_fh; 30275631Salfred arg.alock.fh.n_len = msg->lm_fh_len; 30375631Salfred arg.alock.oh.n_bytes = (char *)&owner; 30475631Salfred arg.alock.oh.n_len = sizeof(owner); 30575631Salfred arg.alock.svid = msg->lm_msg_ident.pid; 30675631Salfred arg.alock.l_offset = msg->lm_fl.l_start; 30775631Salfred arg.alock.l_len = msg->lm_fl.l_len; 30875631Salfred 30975631Salfred if ((cli = get_client( 31075631Salfred (struct sockaddr *)&msg->lm_addr, 31175631Salfred NLM_VERS)) == NULL) 31275631Salfred return (1); 31375631Salfred 31475631Salfred set_auth(cli, &msg->lm_cred); 31575631Salfred (void)clnt_call(cli, NLM_TEST_MSG, 316121558Speter (xdrproc_t)xdr_nlm_testargs, &arg, 317121558Speter (xdrproc_t)xdr_void, &dummy, timeout); 31875631Salfred } 31975631Salfred return (0); 32075631Salfred} 32175631Salfred 32275631Salfred/* 32375631Salfred * lock_request -- 32475631Salfred * Convert a lock LOCKD_MSG into an NLM request, and send it off. 32575631Salfred */ 32675631Salfredint 32775631Salfredlock_request(LOCKD_MSG *msg) 32875631Salfred{ 32975631Salfred CLIENT *cli; 33075631Salfred struct nlm4_lockargs arg4; 33175631Salfred struct nlm_lockargs arg; 33275631Salfred struct timeval timeout = {0, 0}; /* No timeout, no response. */ 33375631Salfred char dummy; 33475631Salfred 33575631Salfred if (d_calls) 33675631Salfred syslog(LOG_DEBUG, "lock request: %s: %s to %s", 33775631Salfred msg->lm_nfsv3 ? "V4" : "V1/3", 33875631Salfred msg->lm_fl.l_type == F_WRLCK ? "write" : "read", 339100134Salfred from_addr((struct sockaddr *)&msg->lm_addr)); 34075631Salfred 34175631Salfred if (msg->lm_nfsv3) { 34275631Salfred arg4.cookie.n_bytes = (char *)&msg->lm_msg_ident; 34375631Salfred arg4.cookie.n_len = sizeof(msg->lm_msg_ident); 34475631Salfred arg4.block = msg->lm_wait ? 1 : 0; 34575631Salfred arg4.exclusive = msg->lm_fl.l_type == F_WRLCK ? 1 : 0; 34675631Salfred arg4.alock.caller_name = hostname; 34775631Salfred arg4.alock.fh.n_bytes = (char *)&msg->lm_fh; 34875631Salfred arg4.alock.fh.n_len = msg->lm_fh_len; 34975631Salfred arg4.alock.oh.n_bytes = (char *)&owner; 35075631Salfred arg4.alock.oh.n_len = sizeof(owner); 35175631Salfred arg4.alock.svid = msg->lm_msg_ident.pid; 35275631Salfred arg4.alock.l_offset = msg->lm_fl.l_start; 35375631Salfred arg4.alock.l_len = msg->lm_fl.l_len; 35475631Salfred arg4.reclaim = 0; 35575631Salfred arg4.state = nsm_state; 35675631Salfred 35775631Salfred if ((cli = get_client( 35875631Salfred (struct sockaddr *)&msg->lm_addr, 35975631Salfred NLM_VERS4)) == NULL) 36075631Salfred return (1); 36175631Salfred 36275631Salfred set_auth(cli, &msg->lm_cred); 36375631Salfred (void)clnt_call(cli, NLM_LOCK_MSG, 364121558Speter (xdrproc_t)xdr_nlm4_lockargs, &arg4, 365121558Speter (xdrproc_t)xdr_void, &dummy, timeout); 36675631Salfred } else { 36775631Salfred arg.cookie.n_bytes = (char *)&msg->lm_msg_ident; 36875631Salfred arg.cookie.n_len = sizeof(msg->lm_msg_ident); 36975631Salfred arg.block = msg->lm_wait ? 1 : 0; 37075631Salfred arg.exclusive = msg->lm_fl.l_type == F_WRLCK ? 1 : 0; 37175631Salfred arg.alock.caller_name = hostname; 37275631Salfred arg.alock.fh.n_bytes = (char *)&msg->lm_fh; 37375631Salfred arg.alock.fh.n_len = msg->lm_fh_len; 37475631Salfred arg.alock.oh.n_bytes = (char *)&owner; 37575631Salfred arg.alock.oh.n_len = sizeof(owner); 37675631Salfred arg.alock.svid = msg->lm_msg_ident.pid; 37775631Salfred arg.alock.l_offset = msg->lm_fl.l_start; 37875631Salfred arg.alock.l_len = msg->lm_fl.l_len; 37975631Salfred arg.reclaim = 0; 38075631Salfred arg.state = nsm_state; 38175631Salfred 38275631Salfred if ((cli = get_client( 38375631Salfred (struct sockaddr *)&msg->lm_addr, 38475631Salfred NLM_VERS)) == NULL) 38575631Salfred return (1); 38675631Salfred 38775631Salfred set_auth(cli, &msg->lm_cred); 38875631Salfred (void)clnt_call(cli, NLM_LOCK_MSG, 389121558Speter (xdrproc_t)xdr_nlm_lockargs, &arg, 390121558Speter (xdrproc_t)xdr_void, &dummy, timeout); 39175631Salfred } 39275631Salfred return (0); 39375631Salfred} 39475631Salfred 39575631Salfred/* 39675631Salfred * unlock_request -- 39775631Salfred * Convert an unlock LOCKD_MSG into an NLM request, and send it off. 39875631Salfred */ 39975631Salfredint 40075631Salfredunlock_request(LOCKD_MSG *msg) 40175631Salfred{ 40275631Salfred CLIENT *cli; 40375631Salfred struct nlm4_unlockargs arg4; 40475631Salfred struct nlm_unlockargs arg; 40575631Salfred struct timeval timeout = {0, 0}; /* No timeout, no response. */ 40675631Salfred char dummy; 40775631Salfred 40875631Salfred if (d_calls) 40975631Salfred syslog(LOG_DEBUG, "unlock request: %s: to %s", 41075631Salfred msg->lm_nfsv3 ? "V4" : "V1/3", 411100134Salfred from_addr((struct sockaddr *)&msg->lm_addr)); 41275631Salfred 41375631Salfred if (msg->lm_nfsv3) { 41475631Salfred arg4.cookie.n_bytes = (char *)&msg->lm_msg_ident; 41575631Salfred arg4.cookie.n_len = sizeof(msg->lm_msg_ident); 41675631Salfred arg4.alock.caller_name = hostname; 41775631Salfred arg4.alock.fh.n_bytes = (char *)&msg->lm_fh; 41875631Salfred arg4.alock.fh.n_len = msg->lm_fh_len; 41975631Salfred arg4.alock.oh.n_bytes = (char *)&owner; 42075631Salfred arg4.alock.oh.n_len = sizeof(owner); 42175631Salfred arg4.alock.svid = msg->lm_msg_ident.pid; 42275631Salfred arg4.alock.l_offset = msg->lm_fl.l_start; 42375631Salfred arg4.alock.l_len = msg->lm_fl.l_len; 42475631Salfred 42575631Salfred if ((cli = get_client( 42675631Salfred (struct sockaddr *)&msg->lm_addr, 42775631Salfred NLM_VERS4)) == NULL) 42875631Salfred return (1); 42975631Salfred 43075631Salfred set_auth(cli, &msg->lm_cred); 43175631Salfred (void)clnt_call(cli, NLM_UNLOCK_MSG, 432121558Speter (xdrproc_t)xdr_nlm4_unlockargs, &arg4, 433121558Speter (xdrproc_t)xdr_void, &dummy, timeout); 43475631Salfred } else { 43575631Salfred arg.cookie.n_bytes = (char *)&msg->lm_msg_ident; 43675631Salfred arg.cookie.n_len = sizeof(msg->lm_msg_ident); 43775631Salfred arg.alock.caller_name = hostname; 43875631Salfred arg.alock.fh.n_bytes = (char *)&msg->lm_fh; 43975631Salfred arg.alock.fh.n_len = msg->lm_fh_len; 44075631Salfred arg.alock.oh.n_bytes = (char *)&owner; 44175631Salfred arg.alock.oh.n_len = sizeof(owner); 44275631Salfred arg.alock.svid = msg->lm_msg_ident.pid; 44375631Salfred arg.alock.l_offset = msg->lm_fl.l_start; 44475631Salfred arg.alock.l_len = msg->lm_fl.l_len; 44575631Salfred 44675631Salfred if ((cli = get_client( 44775631Salfred (struct sockaddr *)&msg->lm_addr, 44875631Salfred NLM_VERS)) == NULL) 44975631Salfred return (1); 45075631Salfred 45175631Salfred set_auth(cli, &msg->lm_cred); 45275631Salfred (void)clnt_call(cli, NLM_UNLOCK_MSG, 453121558Speter (xdrproc_t)xdr_nlm_unlockargs, &arg, 454121558Speter (xdrproc_t)xdr_void, &dummy, timeout); 45575631Salfred } 45675631Salfred 45775631Salfred return (0); 45875631Salfred} 45975631Salfred 46075631Salfredint 46175631Salfredlock_answer(int pid, netobj *netcookie, int result, int *pid_p, int version) 46275631Salfred{ 46375631Salfred struct lockd_ans ans; 46475631Salfred 46575631Salfred if (netcookie->n_len != sizeof(ans.la_msg_ident)) { 46675631Salfred if (pid == -1) { /* we're screwed */ 46775631Salfred syslog(LOG_ERR, "inedible nlm cookie"); 46875631Salfred return -1; 46975631Salfred } 47075631Salfred ans.la_msg_ident.pid = pid; 47175631Salfred ans.la_msg_ident.msg_seq = -1; 47275631Salfred } else { 47386186Salfred memcpy(&ans.la_msg_ident, netcookie->n_bytes, 47486186Salfred sizeof(ans.la_msg_ident)); 47575631Salfred } 47675631Salfred 47775631Salfred if (d_calls) 47875979Salfred syslog(LOG_DEBUG, "lock answer: pid %lu: %s %d", 47986299Salfred (unsigned long)ans.la_msg_ident.pid, 48075979Salfred version == NLM_VERS4 ? "nlmv4" : "nlmv3", 48175979Salfred result); 48275631Salfred 48375631Salfred ans.la_set_getlk_pid = 0; 48475631Salfred if (version == NLM_VERS4) 48575631Salfred switch (result) { 48675631Salfred case nlm4_granted: 48775631Salfred ans.la_errno = 0; 48875631Salfred break; 48975631Salfred default: 49075631Salfred ans.la_errno = EACCES; 49175631Salfred break; 49275631Salfred case nlm4_denied: 49375631Salfred if (pid_p == NULL) 494115012Srwatson ans.la_errno = EAGAIN; 49575631Salfred else { 49675631Salfred /* this is an answer to a nlm_test msg */ 49775631Salfred ans.la_set_getlk_pid = 1; 49875631Salfred ans.la_getlk_pid = *pid_p; 49975631Salfred ans.la_errno = 0; 50075631Salfred } 50175631Salfred break; 50275631Salfred case nlm4_denied_nolocks: 50375631Salfred ans.la_errno = EAGAIN; 50475631Salfred break; 50575631Salfred case nlm4_blocked: 50675631Salfred return -1; 50775631Salfred /* NOTREACHED */ 50875631Salfred case nlm4_denied_grace_period: 50975631Salfred ans.la_errno = EAGAIN; 51075631Salfred break; 51175631Salfred case nlm4_deadlck: 51275631Salfred ans.la_errno = EDEADLK; 51375631Salfred break; 51475631Salfred case nlm4_rofs: 51575631Salfred ans.la_errno = EROFS; 51675631Salfred break; 51775631Salfred case nlm4_stale_fh: 51875631Salfred ans.la_errno = ESTALE; 51975631Salfred break; 52075631Salfred case nlm4_fbig: 52175631Salfred ans.la_errno = EFBIG; 52275631Salfred break; 52375631Salfred case nlm4_failed: 52475631Salfred ans.la_errno = EACCES; 52575631Salfred break; 52675631Salfred } 52775631Salfred else 52875631Salfred switch (result) { 52975631Salfred case nlm_granted: 53075631Salfred ans.la_errno = 0; 53175631Salfred break; 53275631Salfred default: 53375631Salfred ans.la_errno = EACCES; 53475631Salfred break; 53575631Salfred case nlm_denied: 53675631Salfred if (pid_p == NULL) 537115012Srwatson ans.la_errno = EAGAIN; 53875631Salfred else { 53975631Salfred /* this is an answer to a nlm_test msg */ 54075631Salfred ans.la_set_getlk_pid = 1; 54175631Salfred ans.la_getlk_pid = *pid_p; 54275631Salfred ans.la_errno = 0; 54375631Salfred } 54475631Salfred break; 54575631Salfred case nlm_denied_nolocks: 54675631Salfred ans.la_errno = EAGAIN; 54775631Salfred break; 54875631Salfred case nlm_blocked: 54975631Salfred return -1; 55075631Salfred /* NOTREACHED */ 55175631Salfred case nlm_denied_grace_period: 55275631Salfred ans.la_errno = EAGAIN; 55375631Salfred break; 55475631Salfred case nlm_deadlck: 55575631Salfred ans.la_errno = EDEADLK; 55675631Salfred break; 55775631Salfred } 55875631Salfred 55975631Salfred if (nfslockdans(LOCKD_ANS_VERSION, &ans)) { 56075631Salfred syslog(((errno == EPIPE || errno == ESRCH) ? 56175631Salfred LOG_INFO : LOG_ERR), 56275631Salfred "process %lu: %m", (u_long)ans.la_msg_ident.pid); 56375631Salfred return -1; 56475631Salfred } 56575631Salfred return 0; 56675631Salfred} 56775631Salfred 56875631Salfred/* 56975631Salfred * show -- 57075631Salfred * Display the contents of a kernel LOCKD_MSG structure. 57175631Salfred */ 57275631Salfredvoid 57375631Salfredshow(LOCKD_MSG *mp) 57475631Salfred{ 57575631Salfred static char hex[] = "0123456789abcdef"; 57675631Salfred struct fid *fidp; 57775631Salfred fsid_t *fsidp; 57875631Salfred size_t len; 57975631Salfred u_int8_t *p, *t, buf[NFS_SMALLFH*3+1]; 58075631Salfred 58186187Salfred syslog(LOG_DEBUG, "process ID: %lu\n", (long)mp->lm_msg_ident.pid); 58275631Salfred 58375631Salfred fsidp = (fsid_t *)&mp->lm_fh; 58475631Salfred fidp = (struct fid *)((u_int8_t *)&mp->lm_fh + sizeof(fsid_t)); 58575631Salfred 58675631Salfred for (t = buf, p = (u_int8_t *)mp->lm_fh, 58775631Salfred len = mp->lm_fh_len; 58875631Salfred len > 0; ++p, --len) { 58975631Salfred *t++ = '\\'; 59075631Salfred *t++ = hex[(*p & 0xf0) >> 4]; 59175631Salfred *t++ = hex[*p & 0x0f]; 59275631Salfred } 59375631Salfred *t = '\0'; 59475631Salfred 595121558Speter syslog(LOG_DEBUG, "fh_len %d, fh %s\n", (int)mp->lm_fh_len, buf); 59675631Salfred 59775631Salfred /* Show flock structure. */ 59886187Salfred syslog(LOG_DEBUG, "start %qu; len %qu; pid %lu; type %d; whence %d\n", 599121558Speter (unsigned long long)mp->lm_fl.l_start, 600121558Speter (unsigned long long)mp->lm_fl.l_len, (u_long)mp->lm_fl.l_pid, 60175631Salfred mp->lm_fl.l_type, mp->lm_fl.l_whence); 60275631Salfred 60375631Salfred /* Show wait flag. */ 60486187Salfred syslog(LOG_DEBUG, "wait was %s\n", mp->lm_wait ? "set" : "not set"); 60575631Salfred} 606