46
47#include <sys/param.h>
48#include <sys/linker.h>
49#include <sys/module.h>
50#include <sys/mount.h>
51#include <sys/socket.h>
52#include <sys/stat.h>
53#include <sys/syslog.h>
54#include <sys/uio.h>
55
56#include <rpc/rpc.h>
57#include <rpc/pmap_clnt.h>
58#include <rpc/pmap_prot.h>
59#include <rpcsvc/nfs_prot.h>
60#include <rpcsvc/mount.h>
61
62#include <nfsclient/nfs.h>
63
64#include <arpa/inet.h>
65
66#include <ctype.h>
67#include <err.h>
68#include <errno.h>
69#include <fcntl.h>
70#include <netdb.h>
71#include <stdio.h>
72#include <stdlib.h>
73#include <string.h>
74#include <strings.h>
75#include <sysexits.h>
76#include <unistd.h>
77
78#include "mntopts.h"
79#include "mounttab.h"
80
81/* Table for af,sotype -> netid conversions. */
82struct nc_protos {
83 const char *netid;
84 int af;
85 int sotype;
86} nc_protos[] = {
87 {"udp", AF_INET, SOCK_DGRAM},
88 {"tcp", AF_INET, SOCK_STREAM},
89 {"udp6", AF_INET6, SOCK_DGRAM},
90 {"tcp6", AF_INET6, SOCK_STREAM},
91 {NULL, 0, 0}
92};
93
94struct nfhret {
95 u_long stat;
96 long vers;
97 long auth;
98 long fhsize;
99 u_char nfh[NFS3_FHSIZE];
100};
101#define BGRND 1
102#define ISBGRND 2
103#define OF_NOINET4 4
104#define OF_NOINET6 8
105int retrycnt = -1;
106int opflags = 0;
107int nfsproto = IPPROTO_TCP;
108int mnttcp_ok = 1;
109int noconn = 0;
110char *portspec = NULL; /* Server nfs port; NULL means look up via rpcbind. */
111struct sockaddr *addr;
112int addrlen = 0;
113u_char *fh = NULL;
114int fhsize = 0;
115int secflavor = -1;
116int got_principal = 0;
117
118enum mountmode {
119 ANY,
120 V2,
121 V3,
122 V4
123} mountmode = ANY;
124
125/* Return codes for nfs_tryproto. */
126enum tryret {
127 TRYRET_SUCCESS,
128 TRYRET_TIMEOUT, /* No response received. */
129 TRYRET_REMOTEERR, /* Error received from remote server. */
130 TRYRET_LOCALERR /* Local failure. */
131};
132
133static int fallback_mount(struct iovec *iov, int iovlen, int mntflags);
134static int sec_name_to_num(char *sec);
135static char *sec_num_to_name(int num);
136static int getnfsargs(char *, struct iovec **iov, int *iovlen);
137/* void set_rpc_maxgrouplist(int); */
138static struct netconfig *getnetconf_cached(const char *netid);
139static const char *netidbytype(int af, int sotype);
140static void usage(void) __dead2;
141static int xdr_dir(XDR *, char *);
142static int xdr_fh(XDR *, struct nfhret *);
143static enum tryret nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec,
144 char **errstr, struct iovec **iov, int *iovlen);
145static enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
146
147int
148main(int argc, char *argv[])
149{
150 int c;
151 struct iovec *iov;
152 int mntflags, num, iovlen;
153 int osversion;
154 char *name, *p, *spec, *fstype;
155 char mntpath[MAXPATHLEN], errmsg[255];
156 char hostname[MAXHOSTNAMELEN + 1], *gssname, gssn[MAXHOSTNAMELEN + 50];
157
158 mntflags = 0;
159 iov = NULL;
160 iovlen = 0;
161 memset(errmsg, 0, sizeof(errmsg));
162 gssname = NULL;
163
164 fstype = strrchr(argv[0], '_');
165 if (fstype == NULL)
166 errx(EX_USAGE, "argv[0] must end in _fstype");
167
168 ++fstype;
169
170 while ((c = getopt(argc, argv,
171 "23a:bcdD:g:I:iLlNo:PR:r:sTt:w:x:U")) != -1)
172 switch (c) {
173 case '2':
174 mountmode = V2;
175 break;
176 case '3':
177 mountmode = V3;
178 break;
179 case 'a':
180 printf("-a deprecated, use -o readahead=<value>\n");
181 build_iovec(&iov, &iovlen, "readahead", optarg, (size_t)-1);
182 break;
183 case 'b':
184 opflags |= BGRND;
185 break;
186 case 'c':
187 printf("-c deprecated, use -o noconn\n");
188 build_iovec(&iov, &iovlen, "noconn", NULL, 0);
189 noconn = 1;
190 break;
191 case 'D':
192 printf("-D deprecated, use -o deadthresh=<value>\n");
193 build_iovec(&iov, &iovlen, "deadthresh", optarg, (size_t)-1);
194 break;
195 case 'd':
196 printf("-d deprecated, use -o dumbtimer");
197 build_iovec(&iov, &iovlen, "dumbtimer", NULL, 0);
198 break;
199 case 'g':
200 printf("-g deprecated, use -o maxgroups");
201 num = strtol(optarg, &p, 10);
202 if (*p || num <= 0)
203 errx(1, "illegal -g value -- %s", optarg);
204 //set_rpc_maxgrouplist(num);
205 build_iovec(&iov, &iovlen, "maxgroups", optarg, (size_t)-1);
206 break;
207 case 'I':
208 printf("-I deprecated, use -o readdirsize=<value>\n");
209 build_iovec(&iov, &iovlen, "readdirsize", optarg, (size_t)-1);
210 break;
211 case 'i':
212 printf("-i deprecated, use -o intr\n");
213 build_iovec(&iov, &iovlen, "intr", NULL, 0);
214 break;
215 case 'L':
216 printf("-L deprecated, use -o nolockd\n");
217 build_iovec(&iov, &iovlen, "nolockd", NULL, 0);
218 break;
219 case 'l':
220 printf("-l deprecated, -o rdirplus\n");
221 build_iovec(&iov, &iovlen, "rdirplus", NULL, 0);
222 break;
223 case 'N':
224 printf("-N deprecated, do not specify -o resvport\n");
225 break;
226 case 'o': {
227 int pass_flag_to_nmount;
228 char *opt = optarg;
229 while (opt) {
230 char *pval = NULL;
231 char *pnextopt = NULL;
232 char *val = "";
233 pass_flag_to_nmount = 1;
234 pnextopt = strchr(opt, ',');
235 if (pnextopt != NULL) {
236 *pnextopt = '\0';
237 pnextopt++;
238 }
239 pval = strchr(opt, '=');
240 if (pval != NULL) {
241 *pval = '\0';
242 val = pval + 1;
243 }
244 if (strcmp(opt, "bg") == 0) {
245 opflags |= BGRND;
246 pass_flag_to_nmount=0;
247 } else if (strcmp(opt, "fg") == 0) {
248 /* same as not specifying -o bg */
249 pass_flag_to_nmount=0;
250 } else if (strcmp(opt, "gssname") == 0) {
251 pass_flag_to_nmount = 0;
252 gssname = val;
253 } else if (strcmp(opt, "mntudp") == 0) {
254 mnttcp_ok = 0;
255 nfsproto = IPPROTO_UDP;
256 } else if (strcmp(opt, "udp") == 0) {
257 nfsproto = IPPROTO_UDP;
258 } else if (strcmp(opt, "tcp") == 0) {
259 nfsproto = IPPROTO_TCP;
260 } else if (strcmp(opt, "noinet4") == 0) {
261 pass_flag_to_nmount=0;
262 opflags |= OF_NOINET4;
263 } else if (strcmp(opt, "noinet6") == 0) {
264 pass_flag_to_nmount=0;
265 opflags |= OF_NOINET6;
266 } else if (strcmp(opt, "noconn") == 0) {
267 noconn = 1;
268 } else if (strcmp(opt, "nfsv2") == 0) {
269 pass_flag_to_nmount=0;
270 mountmode = V2;
271 } else if (strcmp(opt, "nfsv3") == 0) {
272 mountmode = V3;
273 } else if (strcmp(opt, "nfsv4") == 0) {
274 pass_flag_to_nmount=0;
275 mountmode = V4;
276 fstype = "nfs";
277 nfsproto = IPPROTO_TCP;
278 if (portspec == NULL)
279 portspec = "2049";
280 } else if (strcmp(opt, "port") == 0) {
281 pass_flag_to_nmount=0;
282 asprintf(&portspec, "%d",
283 atoi(val));
284 if (portspec == NULL)
285 err(1, "asprintf");
286 } else if (strcmp(opt, "principal") == 0) {
287 got_principal = 1;
288 } else if (strcmp(opt, "sec") == 0) {
289 /*
290 * Don't add this option to
291 * the iovec yet - we will
292 * negotiate which sec flavor
293 * to use with the remote
294 * mountd.
295 */
296 pass_flag_to_nmount=0;
297 secflavor = sec_name_to_num(val);
298 if (secflavor < 0) {
299 errx(1,
300 "illegal sec value -- %s",
301 val);
302 }
303 } else if (strcmp(opt, "retrycnt") == 0) {
304 pass_flag_to_nmount=0;
305 num = strtol(val, &p, 10);
306 if (*p || num < 0)
307 errx(1, "illegal retrycnt value -- %s", val);
308 retrycnt = num;
309 } else if (strcmp(opt, "maxgroups") == 0) {
310 num = strtol(val, &p, 10);
311 if (*p || num <= 0)
312 errx(1, "illegal maxgroups value -- %s", val);
313 //set_rpc_maxgrouplist(num);
314 }
315 if (pass_flag_to_nmount)
316 build_iovec(&iov, &iovlen, opt, val,
317 strlen(val) + 1);
318 opt = pnextopt;
319 }
320 }
321 break;
322 case 'P':
323 /* obsolete for -o noresvport now default */
324 printf("-P deprecated, use -o noresvport\n");
325 build_iovec(&iov, &iovlen, "noresvport", NULL, 0);
326 break;
327 case 'R':
328 printf("-R deprecated, use -o retrycnt=<retrycnt>\n");
329 num = strtol(optarg, &p, 10);
330 if (*p || num < 0)
331 errx(1, "illegal -R value -- %s", optarg);
332 retrycnt = num;
333 break;
334 case 'r':
335 printf("-r deprecated, use -o rsize=<rsize>\n");
336 build_iovec(&iov, &iovlen, "rsize", optarg, (size_t)-1);
337 break;
338 case 's':
339 printf("-s deprecated, use -o soft\n");
340 build_iovec(&iov, &iovlen, "soft", NULL, 0);
341 break;
342 case 'T':
343 nfsproto = IPPROTO_TCP;
344 printf("-T deprecated, use -o tcp\n");
345 break;
346 case 't':
347 printf("-t deprecated, use -o timeout=<value>\n");
348 build_iovec(&iov, &iovlen, "timeout", optarg, (size_t)-1);
349 break;
350 case 'w':
351 printf("-w deprecated, use -o wsize=<value>\n");
352 build_iovec(&iov, &iovlen, "wsize", optarg, (size_t)-1);
353 break;
354 case 'x':
355 printf("-x deprecated, use -o retrans=<value>\n");
356 build_iovec(&iov, &iovlen, "retrans", optarg, (size_t)-1);
357 break;
358 case 'U':
359 printf("-U deprecated, use -o mntudp\n");
360 mnttcp_ok = 0;
361 nfsproto = IPPROTO_UDP;
362 build_iovec(&iov, &iovlen, "mntudp", NULL, 0);
363 break;
364 default:
365 usage();
366 break;
367 }
368 argc -= optind;
369 argv += optind;
370
371 if (argc != 2) {
372 usage();
373 /* NOTREACHED */
374 }
375
376 spec = *argv++;
377 name = *argv;
378
379 if (retrycnt == -1)
380 /* The default is to keep retrying forever. */
381 retrycnt = 0;
382
383 /*
384 * If the fstye is "oldnfs", run the old NFS client unless the
385 * "nfsv4" option was specified.
386 */
387 if (strcmp(fstype, "nfs") == 0) {
388 if (modfind("nfscl") < 0) {
389 /* Not present in kernel, try loading it */
390 if (kldload("nfscl") < 0 ||
391 modfind("nfscl") < 0)
392 errx(1, "nfscl is not available");
393 }
394 }
395
396 /*
397 * Add the fqdn to the gssname, as required.
398 */
399 if (gssname != NULL) {
400 if (strchr(gssname, '@') == NULL &&
401 gethostname(hostname, MAXHOSTNAMELEN) == 0) {
402 snprintf(gssn, sizeof (gssn), "%s@%s", gssname,
403 hostname);
404 gssname = gssn;
405 }
406 build_iovec(&iov, &iovlen, "gssname", gssname,
407 strlen(gssname) + 1);
408 }
409
410 if (!getnfsargs(spec, &iov, &iovlen))
411 exit(1);
412
413 /* resolve the mountpoint with realpath(3) */
| 46
47#include <sys/param.h>
48#include <sys/linker.h>
49#include <sys/module.h>
50#include <sys/mount.h>
51#include <sys/socket.h>
52#include <sys/stat.h>
53#include <sys/syslog.h>
54#include <sys/uio.h>
55
56#include <rpc/rpc.h>
57#include <rpc/pmap_clnt.h>
58#include <rpc/pmap_prot.h>
59#include <rpcsvc/nfs_prot.h>
60#include <rpcsvc/mount.h>
61
62#include <nfsclient/nfs.h>
63
64#include <arpa/inet.h>
65
66#include <ctype.h>
67#include <err.h>
68#include <errno.h>
69#include <fcntl.h>
70#include <netdb.h>
71#include <stdio.h>
72#include <stdlib.h>
73#include <string.h>
74#include <strings.h>
75#include <sysexits.h>
76#include <unistd.h>
77
78#include "mntopts.h"
79#include "mounttab.h"
80
81/* Table for af,sotype -> netid conversions. */
82struct nc_protos {
83 const char *netid;
84 int af;
85 int sotype;
86} nc_protos[] = {
87 {"udp", AF_INET, SOCK_DGRAM},
88 {"tcp", AF_INET, SOCK_STREAM},
89 {"udp6", AF_INET6, SOCK_DGRAM},
90 {"tcp6", AF_INET6, SOCK_STREAM},
91 {NULL, 0, 0}
92};
93
94struct nfhret {
95 u_long stat;
96 long vers;
97 long auth;
98 long fhsize;
99 u_char nfh[NFS3_FHSIZE];
100};
101#define BGRND 1
102#define ISBGRND 2
103#define OF_NOINET4 4
104#define OF_NOINET6 8
105int retrycnt = -1;
106int opflags = 0;
107int nfsproto = IPPROTO_TCP;
108int mnttcp_ok = 1;
109int noconn = 0;
110char *portspec = NULL; /* Server nfs port; NULL means look up via rpcbind. */
111struct sockaddr *addr;
112int addrlen = 0;
113u_char *fh = NULL;
114int fhsize = 0;
115int secflavor = -1;
116int got_principal = 0;
117
118enum mountmode {
119 ANY,
120 V2,
121 V3,
122 V4
123} mountmode = ANY;
124
125/* Return codes for nfs_tryproto. */
126enum tryret {
127 TRYRET_SUCCESS,
128 TRYRET_TIMEOUT, /* No response received. */
129 TRYRET_REMOTEERR, /* Error received from remote server. */
130 TRYRET_LOCALERR /* Local failure. */
131};
132
133static int fallback_mount(struct iovec *iov, int iovlen, int mntflags);
134static int sec_name_to_num(char *sec);
135static char *sec_num_to_name(int num);
136static int getnfsargs(char *, struct iovec **iov, int *iovlen);
137/* void set_rpc_maxgrouplist(int); */
138static struct netconfig *getnetconf_cached(const char *netid);
139static const char *netidbytype(int af, int sotype);
140static void usage(void) __dead2;
141static int xdr_dir(XDR *, char *);
142static int xdr_fh(XDR *, struct nfhret *);
143static enum tryret nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec,
144 char **errstr, struct iovec **iov, int *iovlen);
145static enum tryret returncode(enum clnt_stat stat, struct rpc_err *rpcerr);
146
147int
148main(int argc, char *argv[])
149{
150 int c;
151 struct iovec *iov;
152 int mntflags, num, iovlen;
153 int osversion;
154 char *name, *p, *spec, *fstype;
155 char mntpath[MAXPATHLEN], errmsg[255];
156 char hostname[MAXHOSTNAMELEN + 1], *gssname, gssn[MAXHOSTNAMELEN + 50];
157
158 mntflags = 0;
159 iov = NULL;
160 iovlen = 0;
161 memset(errmsg, 0, sizeof(errmsg));
162 gssname = NULL;
163
164 fstype = strrchr(argv[0], '_');
165 if (fstype == NULL)
166 errx(EX_USAGE, "argv[0] must end in _fstype");
167
168 ++fstype;
169
170 while ((c = getopt(argc, argv,
171 "23a:bcdD:g:I:iLlNo:PR:r:sTt:w:x:U")) != -1)
172 switch (c) {
173 case '2':
174 mountmode = V2;
175 break;
176 case '3':
177 mountmode = V3;
178 break;
179 case 'a':
180 printf("-a deprecated, use -o readahead=<value>\n");
181 build_iovec(&iov, &iovlen, "readahead", optarg, (size_t)-1);
182 break;
183 case 'b':
184 opflags |= BGRND;
185 break;
186 case 'c':
187 printf("-c deprecated, use -o noconn\n");
188 build_iovec(&iov, &iovlen, "noconn", NULL, 0);
189 noconn = 1;
190 break;
191 case 'D':
192 printf("-D deprecated, use -o deadthresh=<value>\n");
193 build_iovec(&iov, &iovlen, "deadthresh", optarg, (size_t)-1);
194 break;
195 case 'd':
196 printf("-d deprecated, use -o dumbtimer");
197 build_iovec(&iov, &iovlen, "dumbtimer", NULL, 0);
198 break;
199 case 'g':
200 printf("-g deprecated, use -o maxgroups");
201 num = strtol(optarg, &p, 10);
202 if (*p || num <= 0)
203 errx(1, "illegal -g value -- %s", optarg);
204 //set_rpc_maxgrouplist(num);
205 build_iovec(&iov, &iovlen, "maxgroups", optarg, (size_t)-1);
206 break;
207 case 'I':
208 printf("-I deprecated, use -o readdirsize=<value>\n");
209 build_iovec(&iov, &iovlen, "readdirsize", optarg, (size_t)-1);
210 break;
211 case 'i':
212 printf("-i deprecated, use -o intr\n");
213 build_iovec(&iov, &iovlen, "intr", NULL, 0);
214 break;
215 case 'L':
216 printf("-L deprecated, use -o nolockd\n");
217 build_iovec(&iov, &iovlen, "nolockd", NULL, 0);
218 break;
219 case 'l':
220 printf("-l deprecated, -o rdirplus\n");
221 build_iovec(&iov, &iovlen, "rdirplus", NULL, 0);
222 break;
223 case 'N':
224 printf("-N deprecated, do not specify -o resvport\n");
225 break;
226 case 'o': {
227 int pass_flag_to_nmount;
228 char *opt = optarg;
229 while (opt) {
230 char *pval = NULL;
231 char *pnextopt = NULL;
232 char *val = "";
233 pass_flag_to_nmount = 1;
234 pnextopt = strchr(opt, ',');
235 if (pnextopt != NULL) {
236 *pnextopt = '\0';
237 pnextopt++;
238 }
239 pval = strchr(opt, '=');
240 if (pval != NULL) {
241 *pval = '\0';
242 val = pval + 1;
243 }
244 if (strcmp(opt, "bg") == 0) {
245 opflags |= BGRND;
246 pass_flag_to_nmount=0;
247 } else if (strcmp(opt, "fg") == 0) {
248 /* same as not specifying -o bg */
249 pass_flag_to_nmount=0;
250 } else if (strcmp(opt, "gssname") == 0) {
251 pass_flag_to_nmount = 0;
252 gssname = val;
253 } else if (strcmp(opt, "mntudp") == 0) {
254 mnttcp_ok = 0;
255 nfsproto = IPPROTO_UDP;
256 } else if (strcmp(opt, "udp") == 0) {
257 nfsproto = IPPROTO_UDP;
258 } else if (strcmp(opt, "tcp") == 0) {
259 nfsproto = IPPROTO_TCP;
260 } else if (strcmp(opt, "noinet4") == 0) {
261 pass_flag_to_nmount=0;
262 opflags |= OF_NOINET4;
263 } else if (strcmp(opt, "noinet6") == 0) {
264 pass_flag_to_nmount=0;
265 opflags |= OF_NOINET6;
266 } else if (strcmp(opt, "noconn") == 0) {
267 noconn = 1;
268 } else if (strcmp(opt, "nfsv2") == 0) {
269 pass_flag_to_nmount=0;
270 mountmode = V2;
271 } else if (strcmp(opt, "nfsv3") == 0) {
272 mountmode = V3;
273 } else if (strcmp(opt, "nfsv4") == 0) {
274 pass_flag_to_nmount=0;
275 mountmode = V4;
276 fstype = "nfs";
277 nfsproto = IPPROTO_TCP;
278 if (portspec == NULL)
279 portspec = "2049";
280 } else if (strcmp(opt, "port") == 0) {
281 pass_flag_to_nmount=0;
282 asprintf(&portspec, "%d",
283 atoi(val));
284 if (portspec == NULL)
285 err(1, "asprintf");
286 } else if (strcmp(opt, "principal") == 0) {
287 got_principal = 1;
288 } else if (strcmp(opt, "sec") == 0) {
289 /*
290 * Don't add this option to
291 * the iovec yet - we will
292 * negotiate which sec flavor
293 * to use with the remote
294 * mountd.
295 */
296 pass_flag_to_nmount=0;
297 secflavor = sec_name_to_num(val);
298 if (secflavor < 0) {
299 errx(1,
300 "illegal sec value -- %s",
301 val);
302 }
303 } else if (strcmp(opt, "retrycnt") == 0) {
304 pass_flag_to_nmount=0;
305 num = strtol(val, &p, 10);
306 if (*p || num < 0)
307 errx(1, "illegal retrycnt value -- %s", val);
308 retrycnt = num;
309 } else if (strcmp(opt, "maxgroups") == 0) {
310 num = strtol(val, &p, 10);
311 if (*p || num <= 0)
312 errx(1, "illegal maxgroups value -- %s", val);
313 //set_rpc_maxgrouplist(num);
314 }
315 if (pass_flag_to_nmount)
316 build_iovec(&iov, &iovlen, opt, val,
317 strlen(val) + 1);
318 opt = pnextopt;
319 }
320 }
321 break;
322 case 'P':
323 /* obsolete for -o noresvport now default */
324 printf("-P deprecated, use -o noresvport\n");
325 build_iovec(&iov, &iovlen, "noresvport", NULL, 0);
326 break;
327 case 'R':
328 printf("-R deprecated, use -o retrycnt=<retrycnt>\n");
329 num = strtol(optarg, &p, 10);
330 if (*p || num < 0)
331 errx(1, "illegal -R value -- %s", optarg);
332 retrycnt = num;
333 break;
334 case 'r':
335 printf("-r deprecated, use -o rsize=<rsize>\n");
336 build_iovec(&iov, &iovlen, "rsize", optarg, (size_t)-1);
337 break;
338 case 's':
339 printf("-s deprecated, use -o soft\n");
340 build_iovec(&iov, &iovlen, "soft", NULL, 0);
341 break;
342 case 'T':
343 nfsproto = IPPROTO_TCP;
344 printf("-T deprecated, use -o tcp\n");
345 break;
346 case 't':
347 printf("-t deprecated, use -o timeout=<value>\n");
348 build_iovec(&iov, &iovlen, "timeout", optarg, (size_t)-1);
349 break;
350 case 'w':
351 printf("-w deprecated, use -o wsize=<value>\n");
352 build_iovec(&iov, &iovlen, "wsize", optarg, (size_t)-1);
353 break;
354 case 'x':
355 printf("-x deprecated, use -o retrans=<value>\n");
356 build_iovec(&iov, &iovlen, "retrans", optarg, (size_t)-1);
357 break;
358 case 'U':
359 printf("-U deprecated, use -o mntudp\n");
360 mnttcp_ok = 0;
361 nfsproto = IPPROTO_UDP;
362 build_iovec(&iov, &iovlen, "mntudp", NULL, 0);
363 break;
364 default:
365 usage();
366 break;
367 }
368 argc -= optind;
369 argv += optind;
370
371 if (argc != 2) {
372 usage();
373 /* NOTREACHED */
374 }
375
376 spec = *argv++;
377 name = *argv;
378
379 if (retrycnt == -1)
380 /* The default is to keep retrying forever. */
381 retrycnt = 0;
382
383 /*
384 * If the fstye is "oldnfs", run the old NFS client unless the
385 * "nfsv4" option was specified.
386 */
387 if (strcmp(fstype, "nfs") == 0) {
388 if (modfind("nfscl") < 0) {
389 /* Not present in kernel, try loading it */
390 if (kldload("nfscl") < 0 ||
391 modfind("nfscl") < 0)
392 errx(1, "nfscl is not available");
393 }
394 }
395
396 /*
397 * Add the fqdn to the gssname, as required.
398 */
399 if (gssname != NULL) {
400 if (strchr(gssname, '@') == NULL &&
401 gethostname(hostname, MAXHOSTNAMELEN) == 0) {
402 snprintf(gssn, sizeof (gssn), "%s@%s", gssname,
403 hostname);
404 gssname = gssn;
405 }
406 build_iovec(&iov, &iovlen, "gssname", gssname,
407 strlen(gssname) + 1);
408 }
409
410 if (!getnfsargs(spec, &iov, &iovlen))
411 exit(1);
412
413 /* resolve the mountpoint with realpath(3) */
|
415
416 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
417 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
418 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
419
420 /*
421 * XXX:
422 * Backwards compatibility routines for older kernels.
423 * Remove this and fallback_mount() code when we do not need to support
424 * NFS mounts against older kernels which still need
425 * struct nfs_args to be passed in via nmount().
426 */
427 osversion = getosreldate();
428 if (osversion >= 702100) {
429 if (nmount(iov, iovlen, mntflags))
430 err(1, "%s, %s", mntpath, errmsg);
431 } else {
432 if (fallback_mount(iov, iovlen, mntflags))
433 err(1, "%s, %s", mntpath, errmsg);
434 }
435
436 exit(0);
437}
438
439static int
440findopt(struct iovec *iov, int iovlen, const char *name,
441 char **valuep, int *lenp)
442{
443 int i;
444
445 for (i = 0; i < iovlen/2; i++, iov += 2) {
446 if (strcmp(name, iov[0].iov_base) == 0) {
447 if (valuep)
448 *valuep = iov[1].iov_base;
449 if (lenp)
450 *lenp = iov[1].iov_len;
451 return (0);
452 }
453 }
454 return (ENOENT);
455}
456
457static void
458copyopt(struct iovec **newiov, int *newiovlen,
459 struct iovec *iov, int iovlen, const char *name)
460{
461 char *value;
462 int len;
463
464 if (findopt(iov, iovlen, name, &value, &len) == 0)
465 build_iovec(newiov, newiovlen, name, value, len);
466}
467
468/*
469 * XXX: This function is provided for backwards
470 * compatibility with older kernels which did not support
471 * passing NFS mount options to nmount() as individual
472 * parameters. It should be eventually be removed.
473 */
474static int
475fallback_mount(struct iovec *iov, int iovlen, int mntflags)
476{
477 struct nfs_args args = {
478 .version = NFS_ARGSVERSION,
479 .addr = NULL,
480 .addrlen = sizeof (struct sockaddr_in),
481 .sotype = SOCK_STREAM,
482 .proto = 0,
483 .fh = NULL,
484 .fhsize = 0,
485 .flags = NFSMNT_RESVPORT,
486 .wsize = NFS_WSIZE,
487 .rsize = NFS_RSIZE,
488 .readdirsize = NFS_READDIRSIZE,
489 .timeo = 10,
490 .retrans = NFS_RETRANS,
491 .maxgrouplist = NFS_MAXGRPS,
492 .readahead = NFS_DEFRAHEAD,
493 .wcommitsize = 0, /* was: NQ_DEFLEASE */
494 .deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
495 .hostname = NULL,
496 /* args version 4 */
497 .acregmin = NFS_MINATTRTIMO,
498 .acregmax = NFS_MAXATTRTIMO,
499 .acdirmin = NFS_MINDIRATTRTIMO,
500 .acdirmax = NFS_MAXDIRATTRTIMO,
501 };
502 int ret;
503 char *opt;
504 struct iovec *newiov;
505 int newiovlen;
506
507 if (findopt(iov, iovlen, "dumbtimer", NULL, NULL) == 0)
508 args.flags |= NFSMNT_DUMBTIMR;
509 if (findopt(iov, iovlen, "noconn", NULL, NULL) == 0)
510 args.flags |= NFSMNT_NOCONN;
511 if (findopt(iov, iovlen, "conn", NULL, NULL) == 0)
512 args.flags |= NFSMNT_NOCONN;
513 if (findopt(iov, iovlen, "nolockd", NULL, NULL) == 0)
514 args.flags |= NFSMNT_NOLOCKD;
515 if (findopt(iov, iovlen, "lockd", NULL, NULL) == 0)
516 args.flags &= ~NFSMNT_NOLOCKD;
517 if (findopt(iov, iovlen, "intr", NULL, NULL) == 0)
518 args.flags |= NFSMNT_INT;
519 if (findopt(iov, iovlen, "rdirplus", NULL, NULL) == 0)
520 args.flags |= NFSMNT_RDIRPLUS;
521 if (findopt(iov, iovlen, "resvport", NULL, NULL) == 0)
522 args.flags |= NFSMNT_RESVPORT;
523 if (findopt(iov, iovlen, "noresvport", NULL, NULL) == 0)
524 args.flags &= ~NFSMNT_RESVPORT;
525 if (findopt(iov, iovlen, "soft", NULL, NULL) == 0)
526 args.flags |= NFSMNT_SOFT;
527 if (findopt(iov, iovlen, "hard", NULL, NULL) == 0)
528 args.flags &= ~NFSMNT_SOFT;
529 if (findopt(iov, iovlen, "mntudp", NULL, NULL) == 0)
530 args.sotype = SOCK_DGRAM;
531 if (findopt(iov, iovlen, "udp", NULL, NULL) == 0)
532 args.sotype = SOCK_DGRAM;
533 if (findopt(iov, iovlen, "tcp", NULL, NULL) == 0)
534 args.sotype = SOCK_STREAM;
535 if (findopt(iov, iovlen, "nfsv3", NULL, NULL) == 0)
536 args.flags |= NFSMNT_NFSV3;
537 if (findopt(iov, iovlen, "readdirsize", &opt, NULL) == 0) {
538 if (opt == NULL) {
539 errx(1, "illegal readdirsize");
540 }
541 ret = sscanf(opt, "%d", &args.readdirsize);
542 if (ret != 1 || args.readdirsize <= 0) {
543 errx(1, "illegal readdirsize: %s", opt);
544 }
545 args.flags |= NFSMNT_READDIRSIZE;
546 }
547 if (findopt(iov, iovlen, "readahead", &opt, NULL) == 0) {
548 if (opt == NULL) {
549 errx(1, "illegal readahead");
550 }
551 ret = sscanf(opt, "%d", &args.readahead);
552 if (ret != 1 || args.readahead <= 0) {
553 errx(1, "illegal readahead: %s", opt);
554 }
555 args.flags |= NFSMNT_READAHEAD;
556 }
557 if (findopt(iov, iovlen, "wsize", &opt, NULL) == 0) {
558 if (opt == NULL) {
559 errx(1, "illegal wsize");
560 }
561 ret = sscanf(opt, "%d", &args.wsize);
562 if (ret != 1 || args.wsize <= 0) {
563 errx(1, "illegal wsize: %s", opt);
564 }
565 args.flags |= NFSMNT_WSIZE;
566 }
567 if (findopt(iov, iovlen, "rsize", &opt, NULL) == 0) {
568 if (opt == NULL) {
569 errx(1, "illegal rsize");
570 }
571 ret = sscanf(opt, "%d", &args.rsize);
572 if (ret != 1 || args.rsize <= 0) {
573 errx(1, "illegal wsize: %s", opt);
574 }
575 args.flags |= NFSMNT_RSIZE;
576 }
577 if (findopt(iov, iovlen, "retrans", &opt, NULL) == 0) {
578 if (opt == NULL) {
579 errx(1, "illegal retrans");
580 }
581 ret = sscanf(opt, "%d", &args.retrans);
582 if (ret != 1 || args.retrans <= 0) {
583 errx(1, "illegal retrans: %s", opt);
584 }
585 args.flags |= NFSMNT_RETRANS;
586 }
587 if (findopt(iov, iovlen, "acregmin", &opt, NULL) == 0) {
588 ret = sscanf(opt, "%d", &args.acregmin);
589 if (ret != 1 || args.acregmin < 0) {
590 errx(1, "illegal acregmin: %s", opt);
591 }
592 args.flags |= NFSMNT_ACREGMIN;
593 }
594 if (findopt(iov, iovlen, "acregmax", &opt, NULL) == 0) {
595 ret = sscanf(opt, "%d", &args.acregmax);
596 if (ret != 1 || args.acregmax < 0) {
597 errx(1, "illegal acregmax: %s", opt);
598 }
599 args.flags |= NFSMNT_ACREGMAX;
600 }
601 if (findopt(iov, iovlen, "acdirmin", &opt, NULL) == 0) {
602 ret = sscanf(opt, "%d", &args.acdirmin);
603 if (ret != 1 || args.acdirmin < 0) {
604 errx(1, "illegal acdirmin: %s", opt);
605 }
606 args.flags |= NFSMNT_ACDIRMIN;
607 }
608 if (findopt(iov, iovlen, "acdirmax", &opt, NULL) == 0) {
609 ret = sscanf(opt, "%d", &args.acdirmax);
610 if (ret != 1 || args.acdirmax < 0) {
611 errx(1, "illegal acdirmax: %s", opt);
612 }
613 args.flags |= NFSMNT_ACDIRMAX;
614 }
615 if (findopt(iov, iovlen, "wcommitsize", &opt, NULL) == 0) {
616 ret = sscanf(opt, "%d", &args.wcommitsize);
617 if (ret != 1 || args.wcommitsize < 0) {
618 errx(1, "illegal wcommitsize: %s", opt);
619 }
620 args.flags |= NFSMNT_WCOMMITSIZE;
621 }
622 if (findopt(iov, iovlen, "deadthresh", &opt, NULL) == 0) {
623 ret = sscanf(opt, "%d", &args.deadthresh);
624 if (ret != 1 || args.deadthresh <= 0) {
625 errx(1, "illegal deadthresh: %s", opt);
626 }
627 args.flags |= NFSMNT_DEADTHRESH;
628 }
629 if (findopt(iov, iovlen, "timeout", &opt, NULL) == 0) {
630 ret = sscanf(opt, "%d", &args.timeo);
631 if (ret != 1 || args.timeo <= 0) {
632 errx(1, "illegal timeout: %s", opt);
633 }
634 args.flags |= NFSMNT_TIMEO;
635 }
636 if (findopt(iov, iovlen, "maxgroups", &opt, NULL) == 0) {
637 ret = sscanf(opt, "%d", &args.maxgrouplist);
638 if (ret != 1 || args.timeo <= 0) {
639 errx(1, "illegal maxgroups: %s", opt);
640 }
641 args.flags |= NFSMNT_MAXGRPS;
642 }
643 if (findopt(iov, iovlen, "addr", &opt,
644 &args.addrlen) == 0) {
645 args.addr = (struct sockaddr *) opt;
646 }
647 if (findopt(iov, iovlen, "fh", &opt, &args.fhsize) == 0) {
648 args.fh = opt;
649 }
650 if (findopt(iov, iovlen, "hostname", &args.hostname,
651 NULL) == 0) {
652 }
653 if (args.hostname == NULL) {
654 errx(1, "Invalid hostname");
655 }
656
657 newiov = NULL;
658 newiovlen = 0;
659
660 build_iovec(&newiov, &newiovlen, "nfs_args", &args, sizeof(args));
661 copyopt(&newiov, &newiovlen, iov, iovlen, "fstype");
662 copyopt(&newiov, &newiovlen, iov, iovlen, "fspath");
663 copyopt(&newiov, &newiovlen, iov, iovlen, "errmsg");
664
665 return nmount(newiov, newiovlen, mntflags);
666}
667
668static int
669sec_name_to_num(char *sec)
670{
671 if (!strcmp(sec, "krb5"))
672 return (RPCSEC_GSS_KRB5);
673 if (!strcmp(sec, "krb5i"))
674 return (RPCSEC_GSS_KRB5I);
675 if (!strcmp(sec, "krb5p"))
676 return (RPCSEC_GSS_KRB5P);
677 if (!strcmp(sec, "sys"))
678 return (AUTH_SYS);
679 return (-1);
680}
681
682static char *
683sec_num_to_name(int flavor)
684{
685 switch (flavor) {
686 case RPCSEC_GSS_KRB5:
687 return ("krb5");
688 case RPCSEC_GSS_KRB5I:
689 return ("krb5i");
690 case RPCSEC_GSS_KRB5P:
691 return ("krb5p");
692 case AUTH_SYS:
693 return ("sys");
694 }
695 return (NULL);
696}
697
698static int
699getnfsargs(char *spec, struct iovec **iov, int *iovlen)
700{
701 struct addrinfo hints, *ai_nfs, *ai;
702 enum tryret ret;
703 int ecode, speclen, remoteerr, offset, have_bracket = 0;
704 char *hostp, *delimp, *errstr;
705 size_t len;
706 static char nam[MNAMELEN + 1], pname[MAXHOSTNAMELEN + 5];
707
708 if (*spec == '[' && (delimp = strchr(spec + 1, ']')) != NULL &&
709 *(delimp + 1) == ':') {
710 hostp = spec + 1;
711 spec = delimp + 2;
712 have_bracket = 1;
713 } else if ((delimp = strrchr(spec, ':')) != NULL) {
714 hostp = spec;
715 spec = delimp + 1;
716 } else if ((delimp = strrchr(spec, '@')) != NULL) {
717 warnx("path@server syntax is deprecated, use server:path");
718 hostp = delimp + 1;
719 } else {
720 warnx("no <host>:<dirpath> nfs-name");
721 return (0);
722 }
723 *delimp = '\0';
724
725 /*
726 * If there has been a trailing slash at mounttime it seems
727 * that some mountd implementations fail to remove the mount
728 * entries from their mountlist while unmounting.
729 */
730 for (speclen = strlen(spec);
731 speclen > 1 && spec[speclen - 1] == '/';
732 speclen--)
733 spec[speclen - 1] = '\0';
734 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
735 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
736 return (0);
737 }
738 /* Make both '@' and ':' notations equal */
739 if (*hostp != '\0') {
740 len = strlen(hostp);
741 offset = 0;
742 if (have_bracket)
743 nam[offset++] = '[';
744 memmove(nam + offset, hostp, len);
745 if (have_bracket)
746 nam[len + offset++] = ']';
747 nam[len + offset++] = ':';
748 memmove(nam + len + offset, spec, speclen);
749 nam[len + speclen + offset] = '\0';
750 }
751
752 /*
753 * Handle an internet host address.
754 */
755 memset(&hints, 0, sizeof hints);
756 hints.ai_flags = AI_NUMERICHOST;
757 if (nfsproto == IPPROTO_TCP)
758 hints.ai_socktype = SOCK_STREAM;
759 else if (nfsproto == IPPROTO_UDP)
760 hints.ai_socktype = SOCK_DGRAM;
761
762 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
763 hints.ai_flags = AI_CANONNAME;
764 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
765 != 0) {
766 if (portspec == NULL)
767 errx(1, "%s: %s", hostp, gai_strerror(ecode));
768 else
769 errx(1, "%s:%s: %s", hostp, portspec,
770 gai_strerror(ecode));
771 return (0);
772 }
773
774 /*
775 * For a Kerberized nfs mount where the "principal"
776 * argument has not been set, add it here.
777 */
778 if (got_principal == 0 && secflavor >= 0 &&
779 secflavor != AUTH_SYS && ai_nfs->ai_canonname != NULL) {
780 snprintf(pname, sizeof (pname), "nfs@%s",
781 ai_nfs->ai_canonname);
782 build_iovec(iov, iovlen, "principal", pname,
783 strlen(pname) + 1);
784 }
785 }
786
787 ret = TRYRET_LOCALERR;
788 for (;;) {
789 /*
790 * Try each entry returned by getaddrinfo(). Note the
791 * occurrence of remote errors by setting `remoteerr'.
792 */
793 remoteerr = 0;
794 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
795 if ((ai->ai_family == AF_INET6) &&
796 (opflags & OF_NOINET6))
797 continue;
798 if ((ai->ai_family == AF_INET) &&
799 (opflags & OF_NOINET4))
800 continue;
801 ret = nfs_tryproto(ai, hostp, spec, &errstr, iov,
802 iovlen);
803 if (ret == TRYRET_SUCCESS)
804 break;
805 if (ret != TRYRET_LOCALERR)
806 remoteerr = 1;
807 if ((opflags & ISBGRND) == 0)
808 fprintf(stderr, "%s\n", errstr);
809 }
810 if (ret == TRYRET_SUCCESS)
811 break;
812
813 /* Exit if all errors were local. */
814 if (!remoteerr)
815 exit(1);
816
817 /*
818 * If retrycnt == 0, we are to keep retrying forever.
819 * Otherwise decrement it, and exit if it hits zero.
820 */
821 if (retrycnt != 0 && --retrycnt == 0)
822 exit(1);
823
824 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
825 warnx("Cannot immediately mount %s:%s, backgrounding",
826 hostp, spec);
827 opflags |= ISBGRND;
828 if (daemon(0, 0) != 0)
829 err(1, "daemon");
830 }
831 sleep(60);
832 }
833 freeaddrinfo(ai_nfs);
834
835 build_iovec(iov, iovlen, "hostname", nam, (size_t)-1);
836 /* Add mounted file system to PATH_MOUNTTAB */
837 if (!add_mtab(hostp, spec))
838 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
839 return (1);
840}
841
842/*
843 * Try to set up the NFS arguments according to the address
844 * family, protocol (and possibly port) specified in `ai'.
845 *
846 * Returns TRYRET_SUCCESS if successful, or:
847 * TRYRET_TIMEOUT The server did not respond.
848 * TRYRET_REMOTEERR The server reported an error.
849 * TRYRET_LOCALERR Local failure.
850 *
851 * In all error cases, *errstr will be set to a statically-allocated string
852 * describing the error.
853 */
854static enum tryret
855nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec, char **errstr,
856 struct iovec **iov, int *iovlen)
857{
858 static char errbuf[256];
859 struct sockaddr_storage nfs_ss;
860 struct netbuf nfs_nb;
861 struct nfhret nfhret;
862 struct timeval try;
863 struct rpc_err rpcerr;
864 CLIENT *clp;
865 struct netconfig *nconf, *nconf_mnt;
866 const char *netid, *netid_mnt;
867 char *secname;
868 int doconnect, nfsvers, mntvers, sotype;
869 enum clnt_stat stat;
870 enum mountmode trymntmode;
871
872 sotype = 0;
873 trymntmode = mountmode;
874 errbuf[0] = '\0';
875 *errstr = errbuf;
876
877 if (nfsproto == IPPROTO_TCP)
878 sotype = SOCK_STREAM;
879 else if (nfsproto == IPPROTO_UDP)
880 sotype = SOCK_DGRAM;
881
882 if ((netid = netidbytype(ai->ai_family, sotype)) == NULL) {
883 snprintf(errbuf, sizeof errbuf,
884 "af %d sotype %d not supported", ai->ai_family, sotype);
885 return (TRYRET_LOCALERR);
886 }
887 if ((nconf = getnetconf_cached(netid)) == NULL) {
888 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
889 return (TRYRET_LOCALERR);
890 }
891 /* The RPCPROG_MNT netid may be different. */
892 if (mnttcp_ok) {
893 netid_mnt = netid;
894 nconf_mnt = nconf;
895 } else {
896 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
897 == NULL) {
898 snprintf(errbuf, sizeof errbuf,
899 "af %d sotype SOCK_DGRAM not supported",
900 ai->ai_family);
901 return (TRYRET_LOCALERR);
902 }
903 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
904 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
905 nc_sperror());
906 return (TRYRET_LOCALERR);
907 }
908 }
909
910tryagain:
911 if (trymntmode == V4) {
912 nfsvers = 4;
913 } else if (trymntmode == V2) {
914 nfsvers = 2;
915 mntvers = 1;
916 } else {
917 nfsvers = 3;
918 mntvers = 3;
919 }
920
921 if (portspec != NULL) {
922 /* `ai' contains the complete nfsd sockaddr. */
923 nfs_nb.buf = ai->ai_addr;
924 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
925 } else {
926 /* Ask the remote rpcbind. */
927 nfs_nb.buf = &nfs_ss;
928 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
929
930 if (!rpcb_getaddr(NFS_PROGRAM, nfsvers, nconf, &nfs_nb,
931 hostp)) {
932 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
933 trymntmode == ANY) {
934 trymntmode = V2;
935 goto tryagain;
936 }
937 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
938 netid, hostp, spec,
939 clnt_spcreateerror("RPCPROG_NFS"));
940 return (returncode(rpc_createerr.cf_stat,
941 &rpc_createerr.cf_error));
942 }
943 }
944
945 /* Check that the server (nfsd) responds on the port we have chosen. */
946 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, NFS_PROGRAM, nfsvers,
947 0, 0);
948 if (clp == NULL) {
949 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
950 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
951 return (returncode(rpc_createerr.cf_stat,
952 &rpc_createerr.cf_error));
953 }
954 if (sotype == SOCK_DGRAM && noconn == 0) {
955 /*
956 * Use connect(), to match what the kernel does. This
957 * catches cases where the server responds from the
958 * wrong source address.
959 */
960 doconnect = 1;
961 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
962 clnt_destroy(clp);
963 snprintf(errbuf, sizeof errbuf,
964 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
965 spec);
966 return (TRYRET_LOCALERR);
967 }
968 }
969
970 try.tv_sec = 10;
971 try.tv_usec = 0;
972 stat = clnt_call(clp, NFSPROC_NULL, (xdrproc_t)xdr_void, NULL,
973 (xdrproc_t)xdr_void, NULL, try);
974 if (stat != RPC_SUCCESS) {
975 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
976 clnt_destroy(clp);
977 trymntmode = V2;
978 goto tryagain;
979 }
980 clnt_geterr(clp, &rpcerr);
981 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
982 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
983 clnt_destroy(clp);
984 return (returncode(stat, &rpcerr));
985 }
986 clnt_destroy(clp);
987
988 /*
989 * For NFSv4, there is no mount protocol.
990 */
991 if (trymntmode == V4) {
992 /*
993 * Store the server address in nfsargsp, making
994 * sure to copy any locally allocated structures.
995 */
996 addrlen = nfs_nb.len;
997 addr = malloc(addrlen);
998 if (addr == NULL)
999 err(1, "malloc");
1000 bcopy(nfs_nb.buf, addr, addrlen);
1001
1002 build_iovec(iov, iovlen, "addr", addr, addrlen);
1003 secname = sec_num_to_name(secflavor);
1004 if (secname != NULL)
1005 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1006 build_iovec(iov, iovlen, "nfsv4", NULL, 0);
1007 build_iovec(iov, iovlen, "dirpath", spec, (size_t)-1);
1008
1009 return (TRYRET_SUCCESS);
1010 }
1011
1012 /* Send the MOUNTPROC_MNT RPC to get the root filehandle. */
1013 try.tv_sec = 10;
1014 try.tv_usec = 0;
1015 clp = clnt_tp_create(hostp, MOUNTPROG, mntvers, nconf_mnt);
1016 if (clp == NULL) {
1017 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1018 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
1019 return (returncode(rpc_createerr.cf_stat,
1020 &rpc_createerr.cf_error));
1021 }
1022 clp->cl_auth = authsys_create_default();
1023 nfhret.auth = secflavor;
1024 nfhret.vers = mntvers;
1025 stat = clnt_call(clp, MOUNTPROC_MNT, (xdrproc_t)xdr_dir, spec,
1026 (xdrproc_t)xdr_fh, &nfhret,
1027 try);
1028 auth_destroy(clp->cl_auth);
1029 if (stat != RPC_SUCCESS) {
1030 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
1031 clnt_destroy(clp);
1032 trymntmode = V2;
1033 goto tryagain;
1034 }
1035 clnt_geterr(clp, &rpcerr);
1036 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1037 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
1038 clnt_destroy(clp);
1039 return (returncode(stat, &rpcerr));
1040 }
1041 clnt_destroy(clp);
1042
1043 if (nfhret.stat != 0) {
1044 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1045 hostp, spec, strerror(nfhret.stat));
1046 return (TRYRET_REMOTEERR);
1047 }
1048
1049 /*
1050 * Store the filehandle and server address in nfsargsp, making
1051 * sure to copy any locally allocated structures.
1052 */
1053 addrlen = nfs_nb.len;
1054 addr = malloc(addrlen);
1055 fhsize = nfhret.fhsize;
1056 fh = malloc(fhsize);
1057 if (addr == NULL || fh == NULL)
1058 err(1, "malloc");
1059 bcopy(nfs_nb.buf, addr, addrlen);
1060 bcopy(nfhret.nfh, fh, fhsize);
1061
1062 build_iovec(iov, iovlen, "addr", addr, addrlen);
1063 build_iovec(iov, iovlen, "fh", fh, fhsize);
1064 secname = sec_num_to_name(nfhret.auth);
1065 if (secname)
1066 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1067 if (nfsvers == 3)
1068 build_iovec(iov, iovlen, "nfsv3", NULL, 0);
1069
1070 return (TRYRET_SUCCESS);
1071}
1072
1073/*
1074 * Catagorise a RPC return status and error into an `enum tryret'
1075 * return code.
1076 */
1077static enum tryret
1078returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
1079{
1080 switch (stat) {
1081 case RPC_TIMEDOUT:
1082 return (TRYRET_TIMEOUT);
1083 case RPC_PMAPFAILURE:
1084 case RPC_PROGNOTREGISTERED:
1085 case RPC_PROGVERSMISMATCH:
1086 /* XXX, these can be local or remote. */
1087 case RPC_CANTSEND:
1088 case RPC_CANTRECV:
1089 return (TRYRET_REMOTEERR);
1090 case RPC_SYSTEMERROR:
1091 switch (rpcerr->re_errno) {
1092 case ETIMEDOUT:
1093 return (TRYRET_TIMEOUT);
1094 case ENOMEM:
1095 break;
1096 default:
1097 return (TRYRET_REMOTEERR);
1098 }
1099 /* FALLTHROUGH */
1100 default:
1101 break;
1102 }
1103 return (TRYRET_LOCALERR);
1104}
1105
1106/*
1107 * Look up a netid based on an address family and socket type.
1108 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
1109 *
1110 * XXX there should be a library function for this.
1111 */
1112static const char *
1113netidbytype(int af, int sotype)
1114{
1115 struct nc_protos *p;
1116
1117 for (p = nc_protos; p->netid != NULL; p++) {
1118 if (af != p->af || sotype != p->sotype)
1119 continue;
1120 return (p->netid);
1121 }
1122 return (NULL);
1123}
1124
1125/*
1126 * Look up a netconfig entry based on a netid, and cache the result so
1127 * that we don't need to remember to call freenetconfigent().
1128 *
1129 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
1130 * work on failure.
1131 */
1132static struct netconfig *
1133getnetconf_cached(const char *netid)
1134{
1135 static struct nc_entry {
1136 struct netconfig *nconf;
1137 struct nc_entry *next;
1138 } *head;
1139 struct nc_entry *p;
1140 struct netconfig *nconf;
1141
1142 for (p = head; p != NULL; p = p->next)
1143 if (strcmp(netid, p->nconf->nc_netid) == 0)
1144 return (p->nconf);
1145
1146 if ((nconf = getnetconfigent(netid)) == NULL)
1147 return (NULL);
1148 if ((p = malloc(sizeof(*p))) == NULL)
1149 err(1, "malloc");
1150 p->nconf = nconf;
1151 p->next = head;
1152 head = p;
1153
1154 return (p->nconf);
1155}
1156
1157/*
1158 * xdr routines for mount rpc's
1159 */
1160static int
1161xdr_dir(XDR *xdrsp, char *dirp)
1162{
1163 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1164}
1165
1166static int
1167xdr_fh(XDR *xdrsp, struct nfhret *np)
1168{
1169 int i;
1170 long auth, authcnt, authfnd = 0;
1171
1172 if (!xdr_u_long(xdrsp, &np->stat))
1173 return (0);
1174 if (np->stat)
1175 return (1);
1176 switch (np->vers) {
1177 case 1:
1178 np->fhsize = NFS_FHSIZE;
1179 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFS_FHSIZE));
1180 case 3:
1181 if (!xdr_long(xdrsp, &np->fhsize))
1182 return (0);
1183 if (np->fhsize <= 0 || np->fhsize > NFS3_FHSIZE)
1184 return (0);
1185 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
1186 return (0);
1187 if (!xdr_long(xdrsp, &authcnt))
1188 return (0);
1189 for (i = 0; i < authcnt; i++) {
1190 if (!xdr_long(xdrsp, &auth))
1191 return (0);
1192 if (np->auth == -1) {
1193 np->auth = auth;
1194 authfnd++;
1195 } else if (auth == np->auth) {
1196 authfnd++;
1197 }
1198 }
1199 /*
1200 * Some servers, such as DEC's OSF/1 return a nil authenticator
1201 * list to indicate RPCAUTH_UNIX.
1202 */
1203 if (authcnt == 0 && np->auth == -1)
1204 np->auth = AUTH_SYS;
1205 if (!authfnd && (authcnt > 0 || np->auth != AUTH_SYS))
1206 np->stat = EAUTH;
1207 return (1);
1208 };
1209 return (0);
1210}
1211
1212static void
1213usage(void)
1214{
1215 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1216"usage: mount_nfs [-23bcdiLlNPsTU] [-a maxreadahead] [-D deadthresh]",
1217" [-g maxgroups] [-I readdirsize] [-o options] [-R retrycnt]",
1218" [-r readsize] [-t timeout] [-w writesize] [-x retrans]",
1219" rhost:path node");
1220 exit(1);
1221}
| 416
417 build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
418 build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
419 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
420
421 /*
422 * XXX:
423 * Backwards compatibility routines for older kernels.
424 * Remove this and fallback_mount() code when we do not need to support
425 * NFS mounts against older kernels which still need
426 * struct nfs_args to be passed in via nmount().
427 */
428 osversion = getosreldate();
429 if (osversion >= 702100) {
430 if (nmount(iov, iovlen, mntflags))
431 err(1, "%s, %s", mntpath, errmsg);
432 } else {
433 if (fallback_mount(iov, iovlen, mntflags))
434 err(1, "%s, %s", mntpath, errmsg);
435 }
436
437 exit(0);
438}
439
440static int
441findopt(struct iovec *iov, int iovlen, const char *name,
442 char **valuep, int *lenp)
443{
444 int i;
445
446 for (i = 0; i < iovlen/2; i++, iov += 2) {
447 if (strcmp(name, iov[0].iov_base) == 0) {
448 if (valuep)
449 *valuep = iov[1].iov_base;
450 if (lenp)
451 *lenp = iov[1].iov_len;
452 return (0);
453 }
454 }
455 return (ENOENT);
456}
457
458static void
459copyopt(struct iovec **newiov, int *newiovlen,
460 struct iovec *iov, int iovlen, const char *name)
461{
462 char *value;
463 int len;
464
465 if (findopt(iov, iovlen, name, &value, &len) == 0)
466 build_iovec(newiov, newiovlen, name, value, len);
467}
468
469/*
470 * XXX: This function is provided for backwards
471 * compatibility with older kernels which did not support
472 * passing NFS mount options to nmount() as individual
473 * parameters. It should be eventually be removed.
474 */
475static int
476fallback_mount(struct iovec *iov, int iovlen, int mntflags)
477{
478 struct nfs_args args = {
479 .version = NFS_ARGSVERSION,
480 .addr = NULL,
481 .addrlen = sizeof (struct sockaddr_in),
482 .sotype = SOCK_STREAM,
483 .proto = 0,
484 .fh = NULL,
485 .fhsize = 0,
486 .flags = NFSMNT_RESVPORT,
487 .wsize = NFS_WSIZE,
488 .rsize = NFS_RSIZE,
489 .readdirsize = NFS_READDIRSIZE,
490 .timeo = 10,
491 .retrans = NFS_RETRANS,
492 .maxgrouplist = NFS_MAXGRPS,
493 .readahead = NFS_DEFRAHEAD,
494 .wcommitsize = 0, /* was: NQ_DEFLEASE */
495 .deadthresh = NFS_MAXDEADTHRESH, /* was: NQ_DEADTHRESH */
496 .hostname = NULL,
497 /* args version 4 */
498 .acregmin = NFS_MINATTRTIMO,
499 .acregmax = NFS_MAXATTRTIMO,
500 .acdirmin = NFS_MINDIRATTRTIMO,
501 .acdirmax = NFS_MAXDIRATTRTIMO,
502 };
503 int ret;
504 char *opt;
505 struct iovec *newiov;
506 int newiovlen;
507
508 if (findopt(iov, iovlen, "dumbtimer", NULL, NULL) == 0)
509 args.flags |= NFSMNT_DUMBTIMR;
510 if (findopt(iov, iovlen, "noconn", NULL, NULL) == 0)
511 args.flags |= NFSMNT_NOCONN;
512 if (findopt(iov, iovlen, "conn", NULL, NULL) == 0)
513 args.flags |= NFSMNT_NOCONN;
514 if (findopt(iov, iovlen, "nolockd", NULL, NULL) == 0)
515 args.flags |= NFSMNT_NOLOCKD;
516 if (findopt(iov, iovlen, "lockd", NULL, NULL) == 0)
517 args.flags &= ~NFSMNT_NOLOCKD;
518 if (findopt(iov, iovlen, "intr", NULL, NULL) == 0)
519 args.flags |= NFSMNT_INT;
520 if (findopt(iov, iovlen, "rdirplus", NULL, NULL) == 0)
521 args.flags |= NFSMNT_RDIRPLUS;
522 if (findopt(iov, iovlen, "resvport", NULL, NULL) == 0)
523 args.flags |= NFSMNT_RESVPORT;
524 if (findopt(iov, iovlen, "noresvport", NULL, NULL) == 0)
525 args.flags &= ~NFSMNT_RESVPORT;
526 if (findopt(iov, iovlen, "soft", NULL, NULL) == 0)
527 args.flags |= NFSMNT_SOFT;
528 if (findopt(iov, iovlen, "hard", NULL, NULL) == 0)
529 args.flags &= ~NFSMNT_SOFT;
530 if (findopt(iov, iovlen, "mntudp", NULL, NULL) == 0)
531 args.sotype = SOCK_DGRAM;
532 if (findopt(iov, iovlen, "udp", NULL, NULL) == 0)
533 args.sotype = SOCK_DGRAM;
534 if (findopt(iov, iovlen, "tcp", NULL, NULL) == 0)
535 args.sotype = SOCK_STREAM;
536 if (findopt(iov, iovlen, "nfsv3", NULL, NULL) == 0)
537 args.flags |= NFSMNT_NFSV3;
538 if (findopt(iov, iovlen, "readdirsize", &opt, NULL) == 0) {
539 if (opt == NULL) {
540 errx(1, "illegal readdirsize");
541 }
542 ret = sscanf(opt, "%d", &args.readdirsize);
543 if (ret != 1 || args.readdirsize <= 0) {
544 errx(1, "illegal readdirsize: %s", opt);
545 }
546 args.flags |= NFSMNT_READDIRSIZE;
547 }
548 if (findopt(iov, iovlen, "readahead", &opt, NULL) == 0) {
549 if (opt == NULL) {
550 errx(1, "illegal readahead");
551 }
552 ret = sscanf(opt, "%d", &args.readahead);
553 if (ret != 1 || args.readahead <= 0) {
554 errx(1, "illegal readahead: %s", opt);
555 }
556 args.flags |= NFSMNT_READAHEAD;
557 }
558 if (findopt(iov, iovlen, "wsize", &opt, NULL) == 0) {
559 if (opt == NULL) {
560 errx(1, "illegal wsize");
561 }
562 ret = sscanf(opt, "%d", &args.wsize);
563 if (ret != 1 || args.wsize <= 0) {
564 errx(1, "illegal wsize: %s", opt);
565 }
566 args.flags |= NFSMNT_WSIZE;
567 }
568 if (findopt(iov, iovlen, "rsize", &opt, NULL) == 0) {
569 if (opt == NULL) {
570 errx(1, "illegal rsize");
571 }
572 ret = sscanf(opt, "%d", &args.rsize);
573 if (ret != 1 || args.rsize <= 0) {
574 errx(1, "illegal wsize: %s", opt);
575 }
576 args.flags |= NFSMNT_RSIZE;
577 }
578 if (findopt(iov, iovlen, "retrans", &opt, NULL) == 0) {
579 if (opt == NULL) {
580 errx(1, "illegal retrans");
581 }
582 ret = sscanf(opt, "%d", &args.retrans);
583 if (ret != 1 || args.retrans <= 0) {
584 errx(1, "illegal retrans: %s", opt);
585 }
586 args.flags |= NFSMNT_RETRANS;
587 }
588 if (findopt(iov, iovlen, "acregmin", &opt, NULL) == 0) {
589 ret = sscanf(opt, "%d", &args.acregmin);
590 if (ret != 1 || args.acregmin < 0) {
591 errx(1, "illegal acregmin: %s", opt);
592 }
593 args.flags |= NFSMNT_ACREGMIN;
594 }
595 if (findopt(iov, iovlen, "acregmax", &opt, NULL) == 0) {
596 ret = sscanf(opt, "%d", &args.acregmax);
597 if (ret != 1 || args.acregmax < 0) {
598 errx(1, "illegal acregmax: %s", opt);
599 }
600 args.flags |= NFSMNT_ACREGMAX;
601 }
602 if (findopt(iov, iovlen, "acdirmin", &opt, NULL) == 0) {
603 ret = sscanf(opt, "%d", &args.acdirmin);
604 if (ret != 1 || args.acdirmin < 0) {
605 errx(1, "illegal acdirmin: %s", opt);
606 }
607 args.flags |= NFSMNT_ACDIRMIN;
608 }
609 if (findopt(iov, iovlen, "acdirmax", &opt, NULL) == 0) {
610 ret = sscanf(opt, "%d", &args.acdirmax);
611 if (ret != 1 || args.acdirmax < 0) {
612 errx(1, "illegal acdirmax: %s", opt);
613 }
614 args.flags |= NFSMNT_ACDIRMAX;
615 }
616 if (findopt(iov, iovlen, "wcommitsize", &opt, NULL) == 0) {
617 ret = sscanf(opt, "%d", &args.wcommitsize);
618 if (ret != 1 || args.wcommitsize < 0) {
619 errx(1, "illegal wcommitsize: %s", opt);
620 }
621 args.flags |= NFSMNT_WCOMMITSIZE;
622 }
623 if (findopt(iov, iovlen, "deadthresh", &opt, NULL) == 0) {
624 ret = sscanf(opt, "%d", &args.deadthresh);
625 if (ret != 1 || args.deadthresh <= 0) {
626 errx(1, "illegal deadthresh: %s", opt);
627 }
628 args.flags |= NFSMNT_DEADTHRESH;
629 }
630 if (findopt(iov, iovlen, "timeout", &opt, NULL) == 0) {
631 ret = sscanf(opt, "%d", &args.timeo);
632 if (ret != 1 || args.timeo <= 0) {
633 errx(1, "illegal timeout: %s", opt);
634 }
635 args.flags |= NFSMNT_TIMEO;
636 }
637 if (findopt(iov, iovlen, "maxgroups", &opt, NULL) == 0) {
638 ret = sscanf(opt, "%d", &args.maxgrouplist);
639 if (ret != 1 || args.timeo <= 0) {
640 errx(1, "illegal maxgroups: %s", opt);
641 }
642 args.flags |= NFSMNT_MAXGRPS;
643 }
644 if (findopt(iov, iovlen, "addr", &opt,
645 &args.addrlen) == 0) {
646 args.addr = (struct sockaddr *) opt;
647 }
648 if (findopt(iov, iovlen, "fh", &opt, &args.fhsize) == 0) {
649 args.fh = opt;
650 }
651 if (findopt(iov, iovlen, "hostname", &args.hostname,
652 NULL) == 0) {
653 }
654 if (args.hostname == NULL) {
655 errx(1, "Invalid hostname");
656 }
657
658 newiov = NULL;
659 newiovlen = 0;
660
661 build_iovec(&newiov, &newiovlen, "nfs_args", &args, sizeof(args));
662 copyopt(&newiov, &newiovlen, iov, iovlen, "fstype");
663 copyopt(&newiov, &newiovlen, iov, iovlen, "fspath");
664 copyopt(&newiov, &newiovlen, iov, iovlen, "errmsg");
665
666 return nmount(newiov, newiovlen, mntflags);
667}
668
669static int
670sec_name_to_num(char *sec)
671{
672 if (!strcmp(sec, "krb5"))
673 return (RPCSEC_GSS_KRB5);
674 if (!strcmp(sec, "krb5i"))
675 return (RPCSEC_GSS_KRB5I);
676 if (!strcmp(sec, "krb5p"))
677 return (RPCSEC_GSS_KRB5P);
678 if (!strcmp(sec, "sys"))
679 return (AUTH_SYS);
680 return (-1);
681}
682
683static char *
684sec_num_to_name(int flavor)
685{
686 switch (flavor) {
687 case RPCSEC_GSS_KRB5:
688 return ("krb5");
689 case RPCSEC_GSS_KRB5I:
690 return ("krb5i");
691 case RPCSEC_GSS_KRB5P:
692 return ("krb5p");
693 case AUTH_SYS:
694 return ("sys");
695 }
696 return (NULL);
697}
698
699static int
700getnfsargs(char *spec, struct iovec **iov, int *iovlen)
701{
702 struct addrinfo hints, *ai_nfs, *ai;
703 enum tryret ret;
704 int ecode, speclen, remoteerr, offset, have_bracket = 0;
705 char *hostp, *delimp, *errstr;
706 size_t len;
707 static char nam[MNAMELEN + 1], pname[MAXHOSTNAMELEN + 5];
708
709 if (*spec == '[' && (delimp = strchr(spec + 1, ']')) != NULL &&
710 *(delimp + 1) == ':') {
711 hostp = spec + 1;
712 spec = delimp + 2;
713 have_bracket = 1;
714 } else if ((delimp = strrchr(spec, ':')) != NULL) {
715 hostp = spec;
716 spec = delimp + 1;
717 } else if ((delimp = strrchr(spec, '@')) != NULL) {
718 warnx("path@server syntax is deprecated, use server:path");
719 hostp = delimp + 1;
720 } else {
721 warnx("no <host>:<dirpath> nfs-name");
722 return (0);
723 }
724 *delimp = '\0';
725
726 /*
727 * If there has been a trailing slash at mounttime it seems
728 * that some mountd implementations fail to remove the mount
729 * entries from their mountlist while unmounting.
730 */
731 for (speclen = strlen(spec);
732 speclen > 1 && spec[speclen - 1] == '/';
733 speclen--)
734 spec[speclen - 1] = '\0';
735 if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
736 warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
737 return (0);
738 }
739 /* Make both '@' and ':' notations equal */
740 if (*hostp != '\0') {
741 len = strlen(hostp);
742 offset = 0;
743 if (have_bracket)
744 nam[offset++] = '[';
745 memmove(nam + offset, hostp, len);
746 if (have_bracket)
747 nam[len + offset++] = ']';
748 nam[len + offset++] = ':';
749 memmove(nam + len + offset, spec, speclen);
750 nam[len + speclen + offset] = '\0';
751 }
752
753 /*
754 * Handle an internet host address.
755 */
756 memset(&hints, 0, sizeof hints);
757 hints.ai_flags = AI_NUMERICHOST;
758 if (nfsproto == IPPROTO_TCP)
759 hints.ai_socktype = SOCK_STREAM;
760 else if (nfsproto == IPPROTO_UDP)
761 hints.ai_socktype = SOCK_DGRAM;
762
763 if (getaddrinfo(hostp, portspec, &hints, &ai_nfs) != 0) {
764 hints.ai_flags = AI_CANONNAME;
765 if ((ecode = getaddrinfo(hostp, portspec, &hints, &ai_nfs))
766 != 0) {
767 if (portspec == NULL)
768 errx(1, "%s: %s", hostp, gai_strerror(ecode));
769 else
770 errx(1, "%s:%s: %s", hostp, portspec,
771 gai_strerror(ecode));
772 return (0);
773 }
774
775 /*
776 * For a Kerberized nfs mount where the "principal"
777 * argument has not been set, add it here.
778 */
779 if (got_principal == 0 && secflavor >= 0 &&
780 secflavor != AUTH_SYS && ai_nfs->ai_canonname != NULL) {
781 snprintf(pname, sizeof (pname), "nfs@%s",
782 ai_nfs->ai_canonname);
783 build_iovec(iov, iovlen, "principal", pname,
784 strlen(pname) + 1);
785 }
786 }
787
788 ret = TRYRET_LOCALERR;
789 for (;;) {
790 /*
791 * Try each entry returned by getaddrinfo(). Note the
792 * occurrence of remote errors by setting `remoteerr'.
793 */
794 remoteerr = 0;
795 for (ai = ai_nfs; ai != NULL; ai = ai->ai_next) {
796 if ((ai->ai_family == AF_INET6) &&
797 (opflags & OF_NOINET6))
798 continue;
799 if ((ai->ai_family == AF_INET) &&
800 (opflags & OF_NOINET4))
801 continue;
802 ret = nfs_tryproto(ai, hostp, spec, &errstr, iov,
803 iovlen);
804 if (ret == TRYRET_SUCCESS)
805 break;
806 if (ret != TRYRET_LOCALERR)
807 remoteerr = 1;
808 if ((opflags & ISBGRND) == 0)
809 fprintf(stderr, "%s\n", errstr);
810 }
811 if (ret == TRYRET_SUCCESS)
812 break;
813
814 /* Exit if all errors were local. */
815 if (!remoteerr)
816 exit(1);
817
818 /*
819 * If retrycnt == 0, we are to keep retrying forever.
820 * Otherwise decrement it, and exit if it hits zero.
821 */
822 if (retrycnt != 0 && --retrycnt == 0)
823 exit(1);
824
825 if ((opflags & (BGRND | ISBGRND)) == BGRND) {
826 warnx("Cannot immediately mount %s:%s, backgrounding",
827 hostp, spec);
828 opflags |= ISBGRND;
829 if (daemon(0, 0) != 0)
830 err(1, "daemon");
831 }
832 sleep(60);
833 }
834 freeaddrinfo(ai_nfs);
835
836 build_iovec(iov, iovlen, "hostname", nam, (size_t)-1);
837 /* Add mounted file system to PATH_MOUNTTAB */
838 if (!add_mtab(hostp, spec))
839 warnx("can't update %s for %s:%s", PATH_MOUNTTAB, hostp, spec);
840 return (1);
841}
842
843/*
844 * Try to set up the NFS arguments according to the address
845 * family, protocol (and possibly port) specified in `ai'.
846 *
847 * Returns TRYRET_SUCCESS if successful, or:
848 * TRYRET_TIMEOUT The server did not respond.
849 * TRYRET_REMOTEERR The server reported an error.
850 * TRYRET_LOCALERR Local failure.
851 *
852 * In all error cases, *errstr will be set to a statically-allocated string
853 * describing the error.
854 */
855static enum tryret
856nfs_tryproto(struct addrinfo *ai, char *hostp, char *spec, char **errstr,
857 struct iovec **iov, int *iovlen)
858{
859 static char errbuf[256];
860 struct sockaddr_storage nfs_ss;
861 struct netbuf nfs_nb;
862 struct nfhret nfhret;
863 struct timeval try;
864 struct rpc_err rpcerr;
865 CLIENT *clp;
866 struct netconfig *nconf, *nconf_mnt;
867 const char *netid, *netid_mnt;
868 char *secname;
869 int doconnect, nfsvers, mntvers, sotype;
870 enum clnt_stat stat;
871 enum mountmode trymntmode;
872
873 sotype = 0;
874 trymntmode = mountmode;
875 errbuf[0] = '\0';
876 *errstr = errbuf;
877
878 if (nfsproto == IPPROTO_TCP)
879 sotype = SOCK_STREAM;
880 else if (nfsproto == IPPROTO_UDP)
881 sotype = SOCK_DGRAM;
882
883 if ((netid = netidbytype(ai->ai_family, sotype)) == NULL) {
884 snprintf(errbuf, sizeof errbuf,
885 "af %d sotype %d not supported", ai->ai_family, sotype);
886 return (TRYRET_LOCALERR);
887 }
888 if ((nconf = getnetconf_cached(netid)) == NULL) {
889 snprintf(errbuf, sizeof errbuf, "%s: %s", netid, nc_sperror());
890 return (TRYRET_LOCALERR);
891 }
892 /* The RPCPROG_MNT netid may be different. */
893 if (mnttcp_ok) {
894 netid_mnt = netid;
895 nconf_mnt = nconf;
896 } else {
897 if ((netid_mnt = netidbytype(ai->ai_family, SOCK_DGRAM))
898 == NULL) {
899 snprintf(errbuf, sizeof errbuf,
900 "af %d sotype SOCK_DGRAM not supported",
901 ai->ai_family);
902 return (TRYRET_LOCALERR);
903 }
904 if ((nconf_mnt = getnetconf_cached(netid_mnt)) == NULL) {
905 snprintf(errbuf, sizeof errbuf, "%s: %s", netid_mnt,
906 nc_sperror());
907 return (TRYRET_LOCALERR);
908 }
909 }
910
911tryagain:
912 if (trymntmode == V4) {
913 nfsvers = 4;
914 } else if (trymntmode == V2) {
915 nfsvers = 2;
916 mntvers = 1;
917 } else {
918 nfsvers = 3;
919 mntvers = 3;
920 }
921
922 if (portspec != NULL) {
923 /* `ai' contains the complete nfsd sockaddr. */
924 nfs_nb.buf = ai->ai_addr;
925 nfs_nb.len = nfs_nb.maxlen = ai->ai_addrlen;
926 } else {
927 /* Ask the remote rpcbind. */
928 nfs_nb.buf = &nfs_ss;
929 nfs_nb.len = nfs_nb.maxlen = sizeof nfs_ss;
930
931 if (!rpcb_getaddr(NFS_PROGRAM, nfsvers, nconf, &nfs_nb,
932 hostp)) {
933 if (rpc_createerr.cf_stat == RPC_PROGVERSMISMATCH &&
934 trymntmode == ANY) {
935 trymntmode = V2;
936 goto tryagain;
937 }
938 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s",
939 netid, hostp, spec,
940 clnt_spcreateerror("RPCPROG_NFS"));
941 return (returncode(rpc_createerr.cf_stat,
942 &rpc_createerr.cf_error));
943 }
944 }
945
946 /* Check that the server (nfsd) responds on the port we have chosen. */
947 clp = clnt_tli_create(RPC_ANYFD, nconf, &nfs_nb, NFS_PROGRAM, nfsvers,
948 0, 0);
949 if (clp == NULL) {
950 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
951 hostp, spec, clnt_spcreateerror("nfsd: RPCPROG_NFS"));
952 return (returncode(rpc_createerr.cf_stat,
953 &rpc_createerr.cf_error));
954 }
955 if (sotype == SOCK_DGRAM && noconn == 0) {
956 /*
957 * Use connect(), to match what the kernel does. This
958 * catches cases where the server responds from the
959 * wrong source address.
960 */
961 doconnect = 1;
962 if (!clnt_control(clp, CLSET_CONNECT, (char *)&doconnect)) {
963 clnt_destroy(clp);
964 snprintf(errbuf, sizeof errbuf,
965 "[%s] %s:%s: CLSET_CONNECT failed", netid, hostp,
966 spec);
967 return (TRYRET_LOCALERR);
968 }
969 }
970
971 try.tv_sec = 10;
972 try.tv_usec = 0;
973 stat = clnt_call(clp, NFSPROC_NULL, (xdrproc_t)xdr_void, NULL,
974 (xdrproc_t)xdr_void, NULL, try);
975 if (stat != RPC_SUCCESS) {
976 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
977 clnt_destroy(clp);
978 trymntmode = V2;
979 goto tryagain;
980 }
981 clnt_geterr(clp, &rpcerr);
982 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid,
983 hostp, spec, clnt_sperror(clp, "NFSPROC_NULL"));
984 clnt_destroy(clp);
985 return (returncode(stat, &rpcerr));
986 }
987 clnt_destroy(clp);
988
989 /*
990 * For NFSv4, there is no mount protocol.
991 */
992 if (trymntmode == V4) {
993 /*
994 * Store the server address in nfsargsp, making
995 * sure to copy any locally allocated structures.
996 */
997 addrlen = nfs_nb.len;
998 addr = malloc(addrlen);
999 if (addr == NULL)
1000 err(1, "malloc");
1001 bcopy(nfs_nb.buf, addr, addrlen);
1002
1003 build_iovec(iov, iovlen, "addr", addr, addrlen);
1004 secname = sec_num_to_name(secflavor);
1005 if (secname != NULL)
1006 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1007 build_iovec(iov, iovlen, "nfsv4", NULL, 0);
1008 build_iovec(iov, iovlen, "dirpath", spec, (size_t)-1);
1009
1010 return (TRYRET_SUCCESS);
1011 }
1012
1013 /* Send the MOUNTPROC_MNT RPC to get the root filehandle. */
1014 try.tv_sec = 10;
1015 try.tv_usec = 0;
1016 clp = clnt_tp_create(hostp, MOUNTPROG, mntvers, nconf_mnt);
1017 if (clp == NULL) {
1018 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1019 hostp, spec, clnt_spcreateerror("RPCMNT: clnt_create"));
1020 return (returncode(rpc_createerr.cf_stat,
1021 &rpc_createerr.cf_error));
1022 }
1023 clp->cl_auth = authsys_create_default();
1024 nfhret.auth = secflavor;
1025 nfhret.vers = mntvers;
1026 stat = clnt_call(clp, MOUNTPROC_MNT, (xdrproc_t)xdr_dir, spec,
1027 (xdrproc_t)xdr_fh, &nfhret,
1028 try);
1029 auth_destroy(clp->cl_auth);
1030 if (stat != RPC_SUCCESS) {
1031 if (stat == RPC_PROGVERSMISMATCH && trymntmode == ANY) {
1032 clnt_destroy(clp);
1033 trymntmode = V2;
1034 goto tryagain;
1035 }
1036 clnt_geterr(clp, &rpcerr);
1037 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1038 hostp, spec, clnt_sperror(clp, "RPCPROG_MNT"));
1039 clnt_destroy(clp);
1040 return (returncode(stat, &rpcerr));
1041 }
1042 clnt_destroy(clp);
1043
1044 if (nfhret.stat != 0) {
1045 snprintf(errbuf, sizeof errbuf, "[%s] %s:%s: %s", netid_mnt,
1046 hostp, spec, strerror(nfhret.stat));
1047 return (TRYRET_REMOTEERR);
1048 }
1049
1050 /*
1051 * Store the filehandle and server address in nfsargsp, making
1052 * sure to copy any locally allocated structures.
1053 */
1054 addrlen = nfs_nb.len;
1055 addr = malloc(addrlen);
1056 fhsize = nfhret.fhsize;
1057 fh = malloc(fhsize);
1058 if (addr == NULL || fh == NULL)
1059 err(1, "malloc");
1060 bcopy(nfs_nb.buf, addr, addrlen);
1061 bcopy(nfhret.nfh, fh, fhsize);
1062
1063 build_iovec(iov, iovlen, "addr", addr, addrlen);
1064 build_iovec(iov, iovlen, "fh", fh, fhsize);
1065 secname = sec_num_to_name(nfhret.auth);
1066 if (secname)
1067 build_iovec(iov, iovlen, "sec", secname, (size_t)-1);
1068 if (nfsvers == 3)
1069 build_iovec(iov, iovlen, "nfsv3", NULL, 0);
1070
1071 return (TRYRET_SUCCESS);
1072}
1073
1074/*
1075 * Catagorise a RPC return status and error into an `enum tryret'
1076 * return code.
1077 */
1078static enum tryret
1079returncode(enum clnt_stat stat, struct rpc_err *rpcerr)
1080{
1081 switch (stat) {
1082 case RPC_TIMEDOUT:
1083 return (TRYRET_TIMEOUT);
1084 case RPC_PMAPFAILURE:
1085 case RPC_PROGNOTREGISTERED:
1086 case RPC_PROGVERSMISMATCH:
1087 /* XXX, these can be local or remote. */
1088 case RPC_CANTSEND:
1089 case RPC_CANTRECV:
1090 return (TRYRET_REMOTEERR);
1091 case RPC_SYSTEMERROR:
1092 switch (rpcerr->re_errno) {
1093 case ETIMEDOUT:
1094 return (TRYRET_TIMEOUT);
1095 case ENOMEM:
1096 break;
1097 default:
1098 return (TRYRET_REMOTEERR);
1099 }
1100 /* FALLTHROUGH */
1101 default:
1102 break;
1103 }
1104 return (TRYRET_LOCALERR);
1105}
1106
1107/*
1108 * Look up a netid based on an address family and socket type.
1109 * `af' is the address family, and `sotype' is SOCK_DGRAM or SOCK_STREAM.
1110 *
1111 * XXX there should be a library function for this.
1112 */
1113static const char *
1114netidbytype(int af, int sotype)
1115{
1116 struct nc_protos *p;
1117
1118 for (p = nc_protos; p->netid != NULL; p++) {
1119 if (af != p->af || sotype != p->sotype)
1120 continue;
1121 return (p->netid);
1122 }
1123 return (NULL);
1124}
1125
1126/*
1127 * Look up a netconfig entry based on a netid, and cache the result so
1128 * that we don't need to remember to call freenetconfigent().
1129 *
1130 * Otherwise it behaves just like getnetconfigent(), so nc_*error()
1131 * work on failure.
1132 */
1133static struct netconfig *
1134getnetconf_cached(const char *netid)
1135{
1136 static struct nc_entry {
1137 struct netconfig *nconf;
1138 struct nc_entry *next;
1139 } *head;
1140 struct nc_entry *p;
1141 struct netconfig *nconf;
1142
1143 for (p = head; p != NULL; p = p->next)
1144 if (strcmp(netid, p->nconf->nc_netid) == 0)
1145 return (p->nconf);
1146
1147 if ((nconf = getnetconfigent(netid)) == NULL)
1148 return (NULL);
1149 if ((p = malloc(sizeof(*p))) == NULL)
1150 err(1, "malloc");
1151 p->nconf = nconf;
1152 p->next = head;
1153 head = p;
1154
1155 return (p->nconf);
1156}
1157
1158/*
1159 * xdr routines for mount rpc's
1160 */
1161static int
1162xdr_dir(XDR *xdrsp, char *dirp)
1163{
1164 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1165}
1166
1167static int
1168xdr_fh(XDR *xdrsp, struct nfhret *np)
1169{
1170 int i;
1171 long auth, authcnt, authfnd = 0;
1172
1173 if (!xdr_u_long(xdrsp, &np->stat))
1174 return (0);
1175 if (np->stat)
1176 return (1);
1177 switch (np->vers) {
1178 case 1:
1179 np->fhsize = NFS_FHSIZE;
1180 return (xdr_opaque(xdrsp, (caddr_t)np->nfh, NFS_FHSIZE));
1181 case 3:
1182 if (!xdr_long(xdrsp, &np->fhsize))
1183 return (0);
1184 if (np->fhsize <= 0 || np->fhsize > NFS3_FHSIZE)
1185 return (0);
1186 if (!xdr_opaque(xdrsp, (caddr_t)np->nfh, np->fhsize))
1187 return (0);
1188 if (!xdr_long(xdrsp, &authcnt))
1189 return (0);
1190 for (i = 0; i < authcnt; i++) {
1191 if (!xdr_long(xdrsp, &auth))
1192 return (0);
1193 if (np->auth == -1) {
1194 np->auth = auth;
1195 authfnd++;
1196 } else if (auth == np->auth) {
1197 authfnd++;
1198 }
1199 }
1200 /*
1201 * Some servers, such as DEC's OSF/1 return a nil authenticator
1202 * list to indicate RPCAUTH_UNIX.
1203 */
1204 if (authcnt == 0 && np->auth == -1)
1205 np->auth = AUTH_SYS;
1206 if (!authfnd && (authcnt > 0 || np->auth != AUTH_SYS))
1207 np->stat = EAUTH;
1208 return (1);
1209 };
1210 return (0);
1211}
1212
1213static void
1214usage(void)
1215{
1216 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
1217"usage: mount_nfs [-23bcdiLlNPsTU] [-a maxreadahead] [-D deadthresh]",
1218" [-g maxgroups] [-I readdirsize] [-o options] [-R retrycnt]",
1219" [-r readsize] [-t timeout] [-w writesize] [-x retrans]",
1220" rhost:path node");
1221 exit(1);
1222}
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