fs/nfsd/export.c

358 	struct svc_export *exp = container_of(rcu_head, struct svc_export,
361 	nfsd4_fslocs_free(&exp->ex_fslocs);
362 	export_stats_destroy(exp->ex_stats);
363 	kfree(exp->ex_stats);
364 	kfree(exp->ex_uuid);
365 	kfree(exp);
370 	struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
372 	path_put(&exp->ex_path);
373 	auth_domain_put(exp->ex_client);
374 	call_rcu(&exp->ex_rcu, svc_export_release);
387 	struct svc_export *exp = container_of(h, struct svc_export, h);
390 	qword_add(bpp, blen, exp->ex_client->name);
391 	pth = d_path(&exp->ex_path, *bpp, *blen);
519 static int secinfo_parse(char **mesg, char *buf, struct svc_export *exp)
526 	if (exp->ex_nflavors)
535 	for (f = exp->ex_flavors; f < exp->ex_flavors + listsize; f++) {
549 		if (~NFSEXP_SECINFO_FLAGS & (f->flags ^ exp->ex_flags))
552 	exp->ex_nflavors = listsize;
560 secinfo_parse(char **mesg, char *buf, struct svc_export *exp) { return 0; }
563 static int xprtsec_parse(char **mesg, char *buf, struct svc_export *exp)
574 	exp->ex_xprtsec_modes = 0;
581 		exp->ex_xprtsec_modes |= mode;
613 	struct svc_export exp = {}, *expp;
639 	err = kern_path(buf, 0, &exp.ex_path);
643 	exp.ex_client = dom;
644 	exp.cd = cd;
645 	exp.ex_devid_map = NULL;
646 	exp.ex_xprtsec_modes = NFSEXP_XPRTSEC_ALL;
649 	err = get_expiry(&mesg, &exp.h.expiry_time);
657 		set_bit(CACHE_NEGATIVE, &exp.h.flags);
661 		exp.ex_flags= an_int;
667 		exp.ex_anon_uid= make_kuid(current_user_ns(), an_int);
673 		exp.ex_anon_gid= make_kgid(current_user_ns(), an_int);
679 		exp.ex_fsid = an_int;
683 				err = fsloc_parse(&mesg, buf, &exp.ex_fslocs);
685 				err = nfsd_uuid_parse(&mesg, buf, &exp.ex_uuid);
687 				err = secinfo_parse(&mesg, buf, &exp);
689 				err = xprtsec_parse(&mesg, buf, &exp);
700 		err = check_export(&exp.ex_path, &exp.ex_flags, exp.ex_uuid);
709 		if (exp.h.expiry_time < seconds_since_boot())
719 		if (!uid_valid(exp.ex_anon_uid))
721 		if (!gid_valid(exp.ex_anon_gid))
725 		nfsd4_setup_layout_type(&exp);
728 	expp = svc_export_lookup(&exp);
733 	expp = svc_export_update(&exp, expp);
741 	nfsd4_fslocs_free(&exp.ex_fslocs);
742 	kfree(exp.ex_uuid);
744 	path_put(&exp.ex_path);
754 static void show_secinfo(struct seq_file *m, struct svc_export *exp);
770 	struct svc_export *exp;
780 	exp = container_of(h, struct svc_export, h);
781 	seq_path(m, &exp->ex_path, " \t\n\\");
783 	seq_escape(m, exp->ex_client->name, " \t\n\\");
785 		struct percpu_counter *counter = exp->ex_stats->counter;
787 		seq_printf(m, "\t%lld\n", exp->ex_stats->start_time);
800 		exp_flags(m, exp->ex_flags, exp->ex_fsid,
801 			  exp->ex_anon_uid, exp->ex_anon_gid, &exp->ex_fslocs);
802 		if (exp->ex_uuid) {
808 				seq_printf(m, "%02x", exp->ex_uuid[i]);
811 		show_secinfo(m, exp);
907 svc_export_hash(struct svc_export *exp)
911 	hash = hash_ptr(exp->ex_client, EXPORT_HASHBITS);
912 	hash ^= hash_ptr(exp->ex_path.dentry, EXPORT_HASHBITS);
913 	hash ^= hash_ptr(exp->ex_path.mnt, EXPORT_HASHBITS);
918 svc_export_lookup(struct svc_export *exp)
921 	int hash = svc_export_hash(exp);
923 	ch = sunrpc_cache_lookup_rcu(exp->cd, &exp->h, hash);
973 	struct svc_export *exp, key;
983 	exp = svc_export_lookup(&key);
984 	if (exp == NULL)
986 	err = cache_check(cd, &exp->h, reqp);
991 	return exp;
1001 	struct svc_export *exp = exp_get_by_name(cd, clp, path, NULL);
1003 	while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path->dentry)) {
1007 		exp = exp_get_by_name(cd, clp, path, NULL);
1011 	return exp;
1025 	struct svc_export	*exp;
1044 	exp = exp_parent(cd, clp, &path);
1045 	if (IS_ERR(exp)) {
1046 		err = PTR_ERR(exp);
1054 	if (fh_compose(&fh, exp, path.dentry, NULL))
1060 	exp_put(exp);
1070 	struct svc_export *exp;
1076 	exp = exp_get_by_name(cd, clp, &ek->ek_path, reqp);
1079 	if (IS_ERR(exp))
1080 		return ERR_CAST(exp);
1081 	return exp;
1086  * @exp: svc_export that is being accessed.
1087  * @rqstp: svc_rqst attempting to access @exp (will be NULL for LOCALIO).
1094 __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp,
1097 	struct exp_flavor_info *f, *end = exp->ex_flavors + exp->ex_nflavors;
1111 	if (exp->ex_xprtsec_modes & NFSEXP_XPRTSEC_NONE) {
1115 	if (exp->ex_xprtsec_modes & NFSEXP_XPRTSEC_TLS) {
1120 	if (exp->ex_xprtsec_modes & NFSEXP_XPRTSEC_MTLS) {
1130 	if (exp->ex_client == rqstp->rq_gssclient)
1133 	for (f = exp->ex_flavors; f < end; f++) {
1138 	if (exp->ex_nflavors == 0) {
1164 		for (f = exp->ex_flavors; f < end; f++) {
1186 	struct svc_export *gssexp, *exp = ERR_PTR(-ENOENT);
1194 	exp = exp_get_by_name(cd, rqstp->rq_client, path, &rqstp->rq_chandle);
1195 	if (PTR_ERR(exp) == -ENOENT)
1197 	if (IS_ERR(exp))
1198 		return exp;
1200 	if (exp->ex_nflavors > 0)
1201 		return exp;
1205 		return exp;
1208 		return exp;
1209 	if (!IS_ERR(exp))
1210 		exp_put(exp);
1235 	struct svc_export *gssexp, *exp = ERR_PTR(-ENOENT);
1242 	exp = exp_find(cd, cl, fsid_type, fsidv, reqp);
1243 	if (PTR_ERR(exp) == -ENOENT)
1245 	if (IS_ERR(exp))
1246 		return exp;
1248 	if (exp->ex_nflavors > 0)
1249 		return exp;
1253 		return exp;
1256 		return exp;
1257 	if (!IS_ERR(exp))
1258 		exp_put(exp);
1266 	struct svc_export *exp = rqst_exp_get_by_name(rqstp, path);
1268 	while (PTR_ERR(exp) == -ENOENT && !IS_ROOT(path->dentry)) {
1272 		exp = rqst_exp_get_by_name(rqstp, path);
1276 	return exp;
1298 	struct svc_export *exp;
1301 	exp = rqst_find_fsidzero_export(rqstp);
1302 	if (IS_ERR(exp))
1303 		return nfserrno(PTR_ERR(exp));
1304 	rv = fh_compose(fhp, exp, exp->ex_path.dentry, NULL);
1305 	exp_put(exp);
1371 static void show_secinfo(struct seq_file *m, struct svc_export *exp)
1374 	struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors;
1377 	if (exp->ex_nflavors == 0)
1379 	f = exp->ex_flavors;
1381 	if (!secinfo_flags_equal(flags, exp->ex_flags))
1423 	struct svc_export *exp = container_of(cp, struct svc_export, h);
1436 	if (cache_check_rcu(cd, &exp->h, NULL))