X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=support%2Fnfs%2Fexports.c;h=551fc0d8400cc57ddfdd846c80e0119210ce69f6;hp=43e68b147b9a7d6a3b97d2f87453953de5c70c6c;hb=1ca2e791eee22895907bceac07f2cbd2ea0193e8;hpb=442c362b033ff30be49e162db8a57d8e375a6f1f

diff --git a/support/nfs/exports.c b/support/nfs/exports.c
index 43e68b1..551fc0d 100644
--- a/support/nfs/exports.c
+++ b/support/nfs/exports.c
@@ -14,7 +14,9 @@
  *		as is, with no warranty expressed or implied.
  */
 
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 
 #include <sys/param.h>
 #include <stdlib.h>
@@ -28,24 +30,43 @@
 #include "xmalloc.h"
 #include "xlog.h"
 #include "xio.h"
+#include "pseudoflavors.h"
 
 #define EXPORT_DEFAULT_FLAGS	\
-  (NFSEXP_READONLY|NFSEXP_ROOTSQUASH|NFSEXP_GATHERED_WRITES)
+  (NFSEXP_READONLY|NFSEXP_ROOTSQUASH|NFSEXP_GATHERED_WRITES|NFSEXP_NOSUBTREECHECK)
+
+struct flav_info flav_map[] = {
+	{ "krb5",	RPC_AUTH_GSS_KRB5	},
+	{ "krb5i",	RPC_AUTH_GSS_KRB5I	},
+	{ "krb5p",	RPC_AUTH_GSS_KRB5P	},
+	{ "lipkey",	RPC_AUTH_GSS_LKEY	},
+	{ "lipkey-i",	RPC_AUTH_GSS_LKEYI	},
+	{ "lipkey-p",	RPC_AUTH_GSS_LKEYP	},
+	{ "spkm3",	RPC_AUTH_GSS_SPKM	},
+	{ "spkm3i",	RPC_AUTH_GSS_SPKMI	},
+	{ "spkm3p",	RPC_AUTH_GSS_SPKMP	},
+	{ "unix",	AUTH_UNIX		},
+	{ "sys",	AUTH_SYS		},
+	{ "null",	AUTH_NULL		},
+	{ "none",	AUTH_NONE		},
+};
+
+const int flav_map_size = sizeof(flav_map)/sizeof(flav_map[0]);
 
 int export_errno;
 
 static char	*efname = NULL;
 static XFILE	*efp = NULL;
 static int	first;
+static int	has_default_opts, has_default_subtree_opts;
 static int	*squids = NULL, nsquids = 0,
 		*sqgids = NULL, nsqgids = 0;
 
 static int	getexport(char *exp, int len);
 static int	getpath(char *path, int len);
-static int	parseopts(char *cp, struct exportent *ep, int warn);
+static int	parseopts(char *cp, struct exportent *ep, int warn, int *had_subtree_opt_ptr);
 static int	parsesquash(char *list, int **idp, int *lenp, char **ep);
 static int	parsenum(char **cpp);
-static int	parsemaptype(char *type);
 static void	freesquash(void);
 static void	syntaxerr(char *msg);
 
@@ -63,11 +84,36 @@ setexportent(char *fname, char *type)
 	first = 1;
 }
 
+static void init_exportent (struct exportent *ee, int fromkernel)
+{
+	ee->e_flags = EXPORT_DEFAULT_FLAGS;
+	/* some kernels assume the default is sync rather than
+	 * async.  More recent kernels always report one or other,
+	 * but this test makes sure we assume same as kernel
+	 * Ditto for wgather
+	 */
+	if (fromkernel) {
+		ee->e_flags &= ~NFSEXP_ASYNC;
+		ee->e_flags &= ~NFSEXP_GATHERED_WRITES;
+	}
+	ee->e_anonuid = 65534;
+	ee->e_anongid = 65534;
+	ee->e_squids = NULL;
+	ee->e_sqgids = NULL;
+	ee->e_mountpoint = NULL;
+	ee->e_fslocmethod = FSLOC_NONE;
+	ee->e_fslocdata = NULL;
+	ee->e_secinfo[0].flav = NULL;
+	ee->e_nsquids = 0;
+	ee->e_nsqgids = 0;
+	ee->e_uuid = NULL;
+}
+
 struct exportent *
 getexportent(int fromkernel, int fromexports)
 {
-	static struct exportent	ee;
-	char		exp[512];
+	static struct exportent	ee, def_ee;
+	char		exp[512], *hostname;
 	char		rpath[MAXPATHLEN+1];
 	char		*opt, *sp;
 	int		ok;
@@ -76,31 +122,17 @@ getexportent(int fromkernel, int fromexports)
 		return NULL;
 
 	freesquash();
-	ee.e_flags = EXPORT_DEFAULT_FLAGS;
-	/* some kernels assume the default is sync rather than
-	 * async.  More recent kernels always report one or other,
-	 * but this test makes sure we assume same as kernel
-	 * Ditto for wgather
-	 */
-	if (fromkernel) {
-		ee.e_flags &= ~NFSEXP_ASYNC;
-		ee.e_flags &= ~NFSEXP_GATHERED_WRITES;
-	}
-	ee.e_maptype = CLE_MAP_IDENT;
-	ee.e_anonuid = -2;
-	ee.e_anongid = -2;
-	ee.e_squids = NULL;
-	ee.e_sqgids = NULL;
-	ee.e_mountpoint = NULL;
-	ee.e_nsquids = 0;
-	ee.e_nsqgids = 0;
 
 	if (first || (ok = getexport(exp, sizeof(exp))) == 0) {
-		ok = getpath(ee.e_path, sizeof(ee.e_path));
+		has_default_opts = 0;
+		has_default_subtree_opts = 0;
+	
+		init_exportent(&def_ee, fromkernel);
+
+		ok = getpath(def_ee.e_path, sizeof(def_ee.e_path));
 		if (ok <= 0)
 			return NULL;
-		strncpy (ee.m_path, ee.e_path, sizeof (ee.m_path) - 1);
-		ee.m_path [sizeof (ee.m_path) - 1] = '\0';
+
 		ok = getexport(exp, sizeof(exp));
 	}
 	if (ok < 0) {
@@ -109,13 +141,34 @@ getexportent(int fromkernel, int fromexports)
 		return NULL;
 	}
 	first = 0;
+		
+	/* Check for default options */
+	if (exp[0] == '-') {
+		if (parseopts(exp + 1, &def_ee, 0, &has_default_subtree_opts) < 0)
+			return NULL;
+		
+		has_default_opts = 1;
+
+		ok = getexport(exp, sizeof(exp));
+		if (ok < 0) {
+			xlog(L_ERROR, "expected client(options...)");
+			export_errno = EINVAL;
+			return NULL;
+		}
+	}
+
+	ee = def_ee;
 
 	/* Check for default client */
 	if (ok == 0)
 		exp[0] = '\0';
+
+	hostname = exp;
 	if ((opt = strchr(exp, '(')) != NULL) {
-		if (opt == exp) 
+		if (opt == exp) {
 			xlog(L_WARNING, "No host name given with %s %s, suggest *%s to avoid warning", ee.e_path, exp, exp);
+			hostname = "*";
+		}
 		*opt++ = '\0';
 		if (!(sp = strchr(opt, ')')) || sp[1] != '\0') {
 			syntaxerr("bad option list");
@@ -124,17 +177,13 @@ getexportent(int fromkernel, int fromexports)
 		}
 		*sp = '\0';
 	} else {
-	    xlog(L_WARNING, "No options for %s %s: suggest %s(sync) to avoid warning", ee.e_path, exp, exp);
-	}
-	if (strlen(exp) >= sizeof(ee.e_hostname)) {
-		syntaxerr("client name too long");
-		export_errno = EINVAL;
-		return NULL;
+		if (!has_default_opts)
+			xlog(L_WARNING, "No options for %s %s: suggest %s(sync) to avoid warning", ee.e_path, exp, exp);
 	}
-	strncpy(ee.e_hostname, exp, sizeof (ee.e_hostname) - 1);
-	ee.e_hostname[sizeof (ee.e_hostname) - 1] = '\0';
+	xfree(ee.e_hostname);
+	ee.e_hostname = xstrdup(hostname);
 
-	if (parseopts(opt, &ee, fromexports) < 0)
+	if (parseopts(opt, &ee, fromexports && !has_default_subtree_opts, NULL) < 0)
 		return NULL;
 
 	/* resolve symlinks */
@@ -142,13 +191,32 @@ getexportent(int fromkernel, int fromexports)
 		rpath[sizeof (rpath) - 1] = '\0';
 		strncpy(ee.e_path, rpath, sizeof (ee.e_path) - 1);
 		ee.e_path[sizeof (ee.e_path) - 1] = '\0';
-		strncpy (ee.m_path, ee.e_path, sizeof (ee.m_path) - 1);
-		ee.m_path [sizeof (ee.m_path) - 1] = '\0';
 	}
 
 	return &ee;
 }
 
+void secinfo_show(FILE *fp, struct exportent *ep)
+{
+	struct sec_entry *p1, *p2;
+	int flags;
+
+	for (p1=ep->e_secinfo; p1->flav; p1=p2) {
+
+		fprintf(fp, ",sec=%s", p1->flav->flavour);
+		for (p2=p1+1; (p2->flav != NULL) && (p1->flags == p2->flags);
+								p2++) {
+			fprintf(fp, ":%s", p2->flav->flavour);
+		}
+		flags = p1->flags;
+		fprintf(fp, ",%s", (flags & NFSEXP_READONLY) ? "ro" : "rw");
+		fprintf(fp, ",%sroot_squash", (flags & NFSEXP_ROOTSQUASH)?
+				"" : "no_");
+		fprintf(fp, ",%sall_squash", (flags & NFSEXP_ALLSQUASH)?
+				"" : "no_");
+	}
+}
+
 void
 putexportent(struct exportent *ep)
 {
@@ -161,7 +229,7 @@ putexportent(struct exportent *ep)
 
 	fp = efp->x_fp;
 	for (i=0; esc[i]; i++)
-	        if (iscntrl(esc[i]) || esc[i] == '"' || esc[i] == '\\'|| isspace(esc[i]))
+	        if (iscntrl(esc[i]) || esc[i] == '"' || esc[i] == '\\' || esc[i] == '#' || isspace(esc[i]))
 			fprintf(fp, "\\%03o", esc[i]);
 		else
 			fprintf(fp, "%c", esc[i]);
@@ -190,24 +258,28 @@ putexportent(struct exportent *ep)
 	if (ep->e_flags & NFSEXP_FSID) {
 		fprintf(fp, "fsid=%d,", ep->e_fsid);
 	}
+	if (ep->e_uuid)
+		fprintf(fp, "fsid=%s,", ep->e_uuid);
 	if (ep->e_mountpoint)
 		fprintf(fp, "mountpoint%s%s,",
 			ep->e_mountpoint[0]?"=":"", ep->e_mountpoint);
-
-	fprintf(fp, "mapping=");
-	switch (ep->e_maptype) {
-	case CLE_MAP_IDENT:
-		fprintf(fp, "identity,");
+	switch (ep->e_fslocmethod) {
+	case FSLOC_NONE:
+		break;
+	case FSLOC_REFER:
+		fprintf(fp, "refer=%s,", ep->e_fslocdata);
 		break;
-	case CLE_MAP_UGIDD:
-		fprintf(fp, "ugidd,");
+	case FSLOC_REPLICA:
+		fprintf(fp, "replicas=%s,", ep->e_fslocdata);
 		break;
-	case CLE_MAP_FILE:
-		fprintf(fp, "file,");
+#ifdef DEBUG
+	case FSLOC_STUB:
+		fprintf(fp, "fsloc=stub,");
 		break;
+#endif
 	default:
-		xlog(L_ERROR, "unknown mapping type for %s:%s",
-					ep->e_hostname, ep->e_path);
+		xlog(L_ERROR, "unknown fsloc method for %s:%s",
+		     ep->e_hostname, ep->e_path);
 	}
 	if ((id = ep->e_squids) != NULL) {
 		fprintf(fp, "squash_uids=");
@@ -225,7 +297,9 @@ putexportent(struct exportent *ep)
 			else
 				fprintf(fp, "%d,", id[i]);
 	}
-	fprintf(fp, "anonuid=%d,anongid=%d)\n", ep->e_anonuid, ep->e_anongid);
+	fprintf(fp, "anonuid=%d,anongid=%d", ep->e_anonuid, ep->e_anongid);
+	secinfo_show(fp, ep);
+	fprintf(fp, ")\n");
 }
 
 void
@@ -256,6 +330,9 @@ dupexportent(struct exportent *dst, struct exportent *src)
 	}
 	if (src->e_mountpoint)
 		dst->e_mountpoint = strdup(src->e_mountpoint);
+	if (src->e_fslocdata)
+		dst->e_fslocdata = strdup(src->e_fslocdata);
+	dst->e_hostname = NULL;
 }
 
 struct exportent *
@@ -263,31 +340,18 @@ mkexportent(char *hname, char *path, char *options)
 {
 	static struct exportent	ee;
 
-	ee.e_flags = EXPORT_DEFAULT_FLAGS;
-	ee.e_maptype = CLE_MAP_IDENT;
-	ee.e_anonuid = -2;
-	ee.e_anongid = -2;
-	ee.e_squids = NULL;
-	ee.e_sqgids = NULL;
-	ee.e_mountpoint = NULL;
-	ee.e_nsquids = 0;
-	ee.e_nsqgids = 0;
-
-	if (strlen(hname) >= sizeof(ee.e_hostname)) {
-		xlog(L_WARNING, "client name %s too long", hname);
-		return NULL;
-	}
-	strncpy(ee.e_hostname, hname, sizeof (ee.e_hostname) - 1);
-	ee.e_hostname[sizeof (ee.e_hostname) - 1] = '\0';
+	init_exportent(&ee, 0);
+
+	xfree(ee.e_hostname);
+	ee.e_hostname = xstrdup(hname);
+
 	if (strlen(path) >= sizeof(ee.e_path)) {
 		xlog(L_WARNING, "path name %s too long", path);
 		return NULL;
 	}
 	strncpy(ee.e_path, path, sizeof (ee.e_path));
 	ee.e_path[sizeof (ee.e_path) - 1] = '\0';
-	strncpy (ee.m_path, ee.e_path, sizeof (ee.m_path) - 1);
-	ee.m_path [sizeof (ee.m_path) - 1] = '\0';
-	if (parseopts(options, &ee, 0) < 0)
+	if (parseopts(options, &ee, 0, NULL) < 0)
 		return NULL;
 	return &ee;
 }
@@ -295,24 +359,137 @@ mkexportent(char *hname, char *path, char *options)
 int
 updateexportent(struct exportent *eep, char *options)
 {
-	if (parseopts(options, eep, 0) < 0)
+	if (parseopts(options, eep, 0, NULL) < 0)
 		return 0;
 	return 1;
 }
 
+
+static int valid_uuid(char *uuid)
+{
+	/* must have 32 hex digits */
+	int cnt;
+	for (cnt = 0 ; *uuid; uuid++)
+		if (isxdigit(*uuid))
+			cnt++;
+	return cnt == 32;
+}
+
+/*
+ * Append the given flavor to the exportent's e_secinfo array, or
+ * do nothing if it's already there.  Returns the index of flavor
+ * in the resulting array in any case.
+ */
+int secinfo_addflavor(struct flav_info *flav, struct exportent *ep)
+{
+	struct sec_entry *p;
+
+	for (p=ep->e_secinfo; p->flav; p++) {
+		if (p->flav == flav)
+			return p - ep->e_secinfo;
+	}
+	if (p - ep->e_secinfo >= SECFLAVOR_COUNT) {
+		xlog(L_ERROR, "more than %d security flavors on an export\n",
+			SECFLAVOR_COUNT);
+		return -1;
+	}
+	p->flav = flav;
+	p->flags = ep->e_flags;
+	(p+1)->flav = NULL;
+	return p - ep->e_secinfo;
+}
+
+static struct flav_info *find_flavor(char *name)
+{
+	struct flav_info *flav;
+	for (flav = flav_map; flav < flav_map + flav_map_size; flav++)
+		if (strcmp(flav->flavour, name) == 0)
+			return flav;
+	return NULL;
+}
+
+/* @str is a colon seperated list of security flavors.  Their order
+ * is recorded in @ep, and a bitmap corresponding to the list is returned.
+ * A zero return indicates an error.
+ */
+static unsigned int parse_flavors(char *str, struct exportent *ep)
+{
+	unsigned int out=0;
+	char *flavor;
+	int bit;
+
+	while ( (flavor=strsep(&str, ":")) ) {
+		struct flav_info *flav = find_flavor(flavor);
+		if (flav == NULL) {
+			xlog(L_ERROR, "unknown flavor %s\n", flavor);
+			return 0;
+		}
+		bit = secinfo_addflavor(flav, ep);
+		if (bit < 0)
+			return 0;
+		out |= 1<<bit;
+	}
+	return out;
+}
+
+/* Sets the bits in @mask for the appropriate security flavor flags. */
+static void setflags(int mask, unsigned int active, struct exportent *ep)
+{
+	int bit=0;
+
+	ep->e_flags |= mask;
+
+	while (active) {
+		if (active & 1)
+			ep->e_secinfo[bit].flags |= mask;
+		bit++;
+		active >>= 1;
+	}
+}
+
+/* Clears the bits in @mask for the appropriate security flavor flags. */
+static void clearflags(int mask, unsigned int active, struct exportent *ep)
+{
+	int bit=0;
+
+	ep->e_flags &= ~mask;
+
+	while (active) {
+		if (active & 1)
+			ep->e_secinfo[bit].flags &= ~mask;
+		bit++;
+		active >>= 1;
+	}
+}
+
+/*
+ * For those flags which are not allowed to vary by pseudoflavor,
+ * ensure that the export flags agree with the flags on each
+ * pseudoflavor:
+ */
+static void fix_pseudoflavor_flags(struct exportent *ep)
+{
+	struct export_features *ef;
+	struct sec_entry *p;
+
+	ef = get_export_features();
+	for (p = ep->e_secinfo; p->flav; p++)
+		p->flags |= ep->e_flags & ~ef->secinfo_flags;
+}
+
 /*
  * Parse option string pointed to by cp and set mount options accordingly.
  */
 static int
-parseopts(char *cp, struct exportent *ep, int warn)
+parseopts(char *cp, struct exportent *ep, int warn, int *had_subtree_opt_ptr)
 {
-	int	had_sync_opt = 0;
+	int	had_subtree_opt = 0;
 	char 	*flname = efname?efname:"command line";
 	int	flline = efp?efp->x_line:0;
+	unsigned int active = 0;
 
 	squids = ep->e_squids; nsquids = ep->e_nsquids;
 	sqgids = ep->e_sqgids; nsqgids = ep->e_nsqgids;
-
 	if (!cp)
 		goto out;
 
@@ -331,61 +508,55 @@ parseopts(char *cp, struct exportent *ep, int warn)
 
 		/* process keyword */
 		if (strcmp(opt, "ro") == 0)
-			ep->e_flags |= NFSEXP_READONLY;
+			setflags(NFSEXP_READONLY, active, ep);
 		else if (strcmp(opt, "rw") == 0)
-			ep->e_flags &= ~NFSEXP_READONLY;
+			clearflags(NFSEXP_READONLY, active, ep);
 		else if (!strcmp(opt, "secure"))
-			ep->e_flags &= ~NFSEXP_INSECURE_PORT;
+			clearflags(NFSEXP_INSECURE_PORT, active, ep);
 		else if (!strcmp(opt, "insecure"))
-			ep->e_flags |= NFSEXP_INSECURE_PORT;
-		else if (!strcmp(opt, "sync")) {
-			had_sync_opt = 1;
-			ep->e_flags &= ~NFSEXP_ASYNC;
-		} else if (!strcmp(opt, "async")) {
-			had_sync_opt = 1;
-			ep->e_flags |= NFSEXP_ASYNC;
-		} else if (!strcmp(opt, "nohide"))
-			ep->e_flags |= NFSEXP_NOHIDE;
+			setflags(NFSEXP_INSECURE_PORT, active, ep);
+		else if (!strcmp(opt, "sync"))
+			clearflags(NFSEXP_ASYNC, active, ep);
+		else if (!strcmp(opt, "async"))
+			setflags(NFSEXP_ASYNC, active, ep);
+		else if (!strcmp(opt, "nohide"))
+			setflags(NFSEXP_NOHIDE, active, ep);
 		else if (!strcmp(opt, "hide"))
-			ep->e_flags &= ~NFSEXP_NOHIDE;
+			clearflags(NFSEXP_NOHIDE, active, ep);
 		else if (!strcmp(opt, "crossmnt"))
-			ep->e_flags |= NFSEXP_CROSSMOUNT;
+			setflags(NFSEXP_CROSSMOUNT, active, ep);
 		else if (!strcmp(opt, "nocrossmnt"))
-			ep->e_flags &= ~NFSEXP_CROSSMOUNT;
+			clearflags(NFSEXP_CROSSMOUNT, active, ep);
 		else if (!strcmp(opt, "wdelay"))
-			ep->e_flags |= NFSEXP_GATHERED_WRITES;
+			setflags(NFSEXP_GATHERED_WRITES, active, ep);
 		else if (!strcmp(opt, "no_wdelay"))
-			ep->e_flags &= ~NFSEXP_GATHERED_WRITES;
+			clearflags(NFSEXP_GATHERED_WRITES, active, ep);
 		else if (strcmp(opt, "root_squash") == 0)
-			ep->e_flags |= NFSEXP_ROOTSQUASH;
+			setflags(NFSEXP_ROOTSQUASH, active, ep);
 		else if (!strcmp(opt, "no_root_squash"))
-			ep->e_flags &= ~NFSEXP_ROOTSQUASH;
+			clearflags(NFSEXP_ROOTSQUASH, active, ep);
 		else if (strcmp(opt, "all_squash") == 0)
-			ep->e_flags |= NFSEXP_ALLSQUASH;
+			setflags(NFSEXP_ALLSQUASH, active, ep);
 		else if (strcmp(opt, "no_all_squash") == 0)
-			ep->e_flags &= ~NFSEXP_ALLSQUASH;
-		else if (strcmp(opt, "subtree_check") == 0)
-			ep->e_flags &= ~NFSEXP_NOSUBTREECHECK;
-		else if (strcmp(opt, "no_subtree_check") == 0)
-			ep->e_flags |= NFSEXP_NOSUBTREECHECK;
-		else if (strcmp(opt, "auth_nlm") == 0)
-			ep->e_flags &= ~NFSEXP_NOAUTHNLM;
+			clearflags(NFSEXP_ALLSQUASH, active, ep);
+		else if (strcmp(opt, "subtree_check") == 0) {
+			had_subtree_opt = 1;
+			clearflags(NFSEXP_NOSUBTREECHECK, active, ep);
+		} else if (strcmp(opt, "no_subtree_check") == 0) {
+			had_subtree_opt = 1;
+			setflags(NFSEXP_NOSUBTREECHECK, active, ep);
+		} else if (strcmp(opt, "auth_nlm") == 0)
+			clearflags(NFSEXP_NOAUTHNLM, active, ep);
 		else if (strcmp(opt, "no_auth_nlm") == 0)
-			ep->e_flags |= NFSEXP_NOAUTHNLM;
+			setflags(NFSEXP_NOAUTHNLM, active, ep);
 		else if (strcmp(opt, "secure_locks") == 0)
-			ep->e_flags &= ~NFSEXP_NOAUTHNLM;
+			clearflags(NFSEXP_NOAUTHNLM, active, ep);
 		else if (strcmp(opt, "insecure_locks") == 0)
-			ep->e_flags |= NFSEXP_NOAUTHNLM;
+			setflags(NFSEXP_NOAUTHNLM, active, ep);
 		else if (strcmp(opt, "acl") == 0)
-			ep->e_flags &= ~NFSEXP_NOACL;
+			clearflags(NFSEXP_NOACL, active, ep);
 		else if (strcmp(opt, "no_acl") == 0)
-			ep->e_flags |= NFSEXP_NOACL;
-		else if (strncmp(opt, "mapping=", 8) == 0)
-			ep->e_maptype = parsemaptype(opt+8);
-		else if (strcmp(opt, "map_identity") == 0)	/* old style */
-			ep->e_maptype = CLE_MAP_IDENT;
-		else if (strcmp(opt, "map_daemon") == 0)	/* old style */
-			ep->e_maptype = CLE_MAP_UGIDD;
+			setflags(NFSEXP_NOACL, active, ep);
 		else if (strncmp(opt, "anonuid=", 8) == 0) {
 			char *oe;
 			ep->e_anonuid = strtol(opt+8, &oe, 10);
@@ -415,13 +586,21 @@ bad_option:
 			}
 		} else if (strncmp(opt, "fsid=", 5) == 0) {
 			char *oe;
-			ep->e_fsid = strtoul(opt+5, &oe, 0);
-			if (opt[5]=='\0' || *oe != '\0') {
-				xlog(L_ERROR, "%s: %d: bad fsid \"%s\"\n",
-				     flname, flline, opt);	
-				goto bad_option;
+			if (strcmp(opt+5, "root") == 0) {
+				ep->e_fsid = 0;
+				setflags(NFSEXP_FSID, active, ep);
+			} else {
+				ep->e_fsid = strtoul(opt+5, &oe, 0);
+				if (opt[5]!='\0' && *oe == '\0') 
+					setflags(NFSEXP_FSID, active, ep);
+				else if (valid_uuid(opt+5))
+					ep->e_uuid = strdup(opt+5);
+				else {
+					xlog(L_ERROR, "%s: %d: bad fsid \"%s\"\n",
+					     flname, flline, opt);	
+					goto bad_option;
+				}
 			}
-			ep->e_flags |= NFSEXP_FSID;
 		} else if (strcmp(opt, "mountpoint")==0 ||
 			   strcmp(opt, "mp") == 0 ||
 			   strncmp(opt, "mountpoint=", 11)==0 ||
@@ -431,10 +610,30 @@ bad_option:
 				ep->e_mountpoint = strdup(mp+1);
 			else
 				ep->e_mountpoint = strdup("");
+#ifdef DEBUG
+		} else if (strncmp(opt, "fsloc=", 6) == 0) {
+			if (strcmp(opt+6, "stub") == 0)
+				ep->e_fslocmethod = FSLOC_STUB;
+			else {
+				xlog(L_ERROR, "%s:%d: bad option %s\n",
+				     flname, flline, opt);
+				goto bad_option;
+			}
+#endif
+		} else if (strncmp(opt, "refer=", 6) == 0) {
+			ep->e_fslocmethod = FSLOC_REFER;
+			ep->e_fslocdata = strdup(opt+6);
+		} else if (strncmp(opt, "replicas=", 9) == 0) {
+			ep->e_fslocmethod = FSLOC_REPLICA;
+			ep->e_fslocdata = strdup(opt+9);
+		} else if (strncmp(opt, "sec=", 4) == 0) {
+			active = parse_flavors(opt+4, ep);
+			if (!active)
+				goto bad_option;
 		} else {
 			xlog(L_ERROR, "%s:%d: unknown keyword \"%s\"\n",
 					flname, flline, opt);
-			ep->e_flags |= NFSEXP_ALLSQUASH | NFSEXP_READONLY;
+			setflags(NFSEXP_ALLSQUASH | NFSEXP_READONLY, active, ep);
 			goto bad_option;
 		}
 		free(opt);
@@ -442,19 +641,28 @@ bad_option:
 			cp++;
 	}
 
+	/*
+	 * Turn on nohide which will allow this export to cross over
+	 * the 'mount --bind' mount point.
+	 */
+	if (ep->e_fslocdata)
+		setflags(NFSEXP_NOHIDE, active, ep);
+	fix_pseudoflavor_flags(ep);
 	ep->e_squids = squids;
 	ep->e_sqgids = sqgids;
 	ep->e_nsquids = nsquids;
 	ep->e_nsqgids = nsqgids;
 
 out:
-	if (warn && !had_sync_opt)
-		xlog(L_WARNING, "%s [%d]: No 'sync' or 'async' option specified for export \"%s:%s\".\n"
-				"  Assuming default behaviour ('sync').\n"
-		     		"  NOTE: this default has changed from previous versions\n",
+	if (warn && !had_subtree_opt)
+		xlog(L_WARNING, "%s [%d]: Neither 'subtree_check' or 'no_subtree_check' specified for export \"%s:%s\".\n"
+				"  Assuming default behaviour ('no_subtree_check').\n"
+		     		"  NOTE: this default has changed since nfs-utils version 1.0.x\n",
 
 				flname, flline,
 				ep->e_hostname, ep->e_path);
+	if (had_subtree_opt_ptr)
+		*had_subtree_opt_ptr = had_subtree_opt;
 
 	return 1;
 }
@@ -531,19 +739,6 @@ parsenum(char **cpp)
 	return num;
 }
 
-static int
-parsemaptype(char *type)
-{
-	if (!strcmp(type, "identity"))
-		return CLE_MAP_IDENT;
-	if (!strcmp(type, "ugidd"))
-		return CLE_MAP_UGIDD;
-	if (!strcmp(type, "file"))
-		return CLE_MAP_FILE;
-	syntaxerr("invalid map type");
-	return CLE_MAP_IDENT;	/* default */
-}
-
 static int
 getpath(char *path, int len)
 {
@@ -569,4 +764,34 @@ syntaxerr(char *msg)
 	xlog(L_ERROR, "%s:%d: syntax error: %s",
 			efname, efp?efp->x_line:0, msg);
 }
-
+struct export_features *get_export_features(void)
+{
+	static char *path = "/proc/fs/nfsd/export_features";
+	static struct export_features ef;
+	static int cached = 0;
+	char buf[50];
+	int c;
+	int fd;
+
+	if (cached)
+		return &ef;
+
+	ef.flags = NFSEXP_OLDFLAGS;
+	ef.secinfo_flags = NFSEXP_OLD_SECINFO_FLAGS;
+
+	fd = open(path, O_RDONLY);
+	if (fd == -1)
+		goto good;
+	fd = read(fd, buf, 50);
+	if (fd == -1)
+		goto err;
+	c = sscanf(buf, "%x %x", &ef.flags, &ef.secinfo_flags);
+	if (c != 2)
+		goto err;
+good:
+	cached = 1;
+	return &ef;
+err:
+	xlog(L_WARNING, "unexpected error reading %s", path);
+	return &ef;
+}