X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmountd%2Fv4root.c;h=b4fdcce611d1fe3e6e7662d8731dc87693e58224;hp=b0a10c8d319338eb3e6d90b408f004ff77d4007a;hb=91bb95f2689e84856ecdf6fac365489d36709cf9;hpb=37d9e4f9e0d1aeeb296583e40a36ae729786230d

diff --git a/utils/mountd/v4root.c b/utils/mountd/v4root.c
index b0a10c8..b4fdcce 100644
--- a/utils/mountd/v4root.c
+++ b/utils/mountd/v4root.c
@@ -83,7 +83,7 @@ v4root_create(char *path, nfs_export *export)
 	struct exportent *curexp = &export->m_export;
 
 	dupexportent(&eep, &pseudo_root.m_export);
-	eep.e_hostname = strdup(curexp->e_hostname);
+	eep.e_hostname = curexp->e_hostname;
 	strncpy(eep.e_path, path, sizeof(eep.e_path));
 	if (strcmp(path, "/") != 0)
 		eep.e_flags &= ~NFSEXP_FSID;
@@ -137,6 +137,34 @@ int pseudofs_update(char *hostname, char *path, nfs_export *source)
 	return 0;
 }
 
+static int v4root_add_parents(nfs_export *exp)
+{
+	char *hostname = exp->m_export.e_hostname;
+	char *path;
+	char *ptr;
+
+	path = strdup(exp->m_export.e_path);
+	if (!path) {
+		xlog(L_WARNING, "v4root_add_parents: Unable to create "
+				"pseudo export for '%s'", exp->m_export.e_path);
+		return -ENOMEM;
+	}
+	for (ptr = path + 1; ptr; ptr = strchr(ptr, '/')) {
+		int ret;
+		char saved;
+
+		saved = *ptr;
+		*ptr = '\0';
+		ret = pseudofs_update(hostname, path, exp);
+		if (ret)
+			return ret;
+		*ptr = saved;
+		ptr++;
+	}
+	free(path);
+	return 0;
+}
+
 /*
  * Create pseudo exports by running through the real export
  * looking at the components of the path that make up the export.
@@ -147,10 +175,8 @@ int pseudofs_update(char *hostname, char *path, nfs_export *source)
 void
 v4root_set()
 {
-	nfs_export	*exp, *nxt;
+	nfs_export	*exp;
 	int	i;
-	char *path, *ptr;
-	char *hostname;
 
 	if (!v4root_needed)
 		return;
@@ -158,10 +184,7 @@ v4root_set()
 		return;
 
 	for (i = 0; i < MCL_MAXTYPES; i++) {
-		for (exp = exportlist[i].p_head; exp; exp = nxt) {
-			nxt = exp->m_next;
-			hostname = exp->m_export.e_hostname;
-
+		for (exp = exportlist[i].p_head; exp; exp = exp->m_next) {
 			if (exp->m_export.e_flags & NFSEXP_V4ROOT)
 				/*
 				 * We just added this one, so its
@@ -169,19 +192,15 @@ v4root_set()
 				 */
 				continue;
 
-			path = strdup(exp->m_export.e_path);
-			for (ptr = path + 1; ptr; ptr = strchr(ptr, '/')) {
-				int ret;
-				char saved;
-
-				saved = *ptr;
-				*ptr = '\0';
-				ret = pseudofs_update(hostname, path, exp);
-				/* XXX: error handling */
-				*ptr = saved;
-				ptr++;
+			if (strcmp(exp->m_export.e_path, "/") == 0 &&
+			    !(exp->m_export.e_flags & NFSEXP_FSID)) {
+				/* Force '/' to be exported as fsid == 0*/
+				exp->m_export.e_flags |= NFSEXP_FSID;
+				exp->m_export.e_fsid = 0;
 			}
-			free(path);
+
+			v4root_add_parents(exp);
+			/* XXX: error handling! */
 		}
 	}
 }