From: Neil Brown <neilb@suse.de>
Date: Sun, 18 Mar 2007 23:22:22 +0000 (+1100)
Subject: Make warning about host matching multiple exports more helpful.
X-Git-Tag: nfs-utils-1-1-0-rc1~49
X-Git-Url: https://git.decadent.org.uk/gitweb/?a=commitdiff_plain;h=e3f2d2262fed12f0f6b77c5ac1c4072d82f1e754;p=nfs-utils.git

Make warning about host matching multiple exports more helpful.

1/ only warn once per export, as it could get too noisy.
2/ make it a little clearer why this might be a problem.
---

diff --git a/support/export/export.c b/support/export/export.c
index a4b0788..74e1d1b 100644
--- a/support/export/export.c
+++ b/support/export/export.c
@@ -90,6 +90,7 @@ export_init(nfs_export *exp, nfs_client *clp, struct exportent *nep)
 	exp->m_xtabent = 0;
 	exp->m_mayexport = 0;
 	exp->m_changed = 0;
+	exp->m_warned = 0;
 	exp->m_client = clp;
 	clp->m_count++;
 }
@@ -115,6 +116,7 @@ export_dup(nfs_export *exp, struct hostent *hp)
 	new->m_exported = 0;
 	new->m_xtabent = 0;
 	new->m_changed = 0;
+	new->m_warned = 0;
 	export_add(new);
 
 	return new;
diff --git a/support/include/exportfs.h b/support/include/exportfs.h
index 458611b..431b5ce 100644
--- a/support/include/exportfs.h
+++ b/support/include/exportfs.h
@@ -47,7 +47,9 @@ typedef struct mexport {
 	int			m_exported;	/* known to knfsd. -1 means not sure */
 	int			m_xtabent  : 1,	/* xtab entry exists */
 				m_mayexport: 1,	/* derived from xtabbed */
-				m_changed  : 1; /* options (may) have changed */
+				m_changed  : 1, /* options (may) have changed */
+				m_warned   : 1; /* warned about multiple exports
+						 * matching one client */
 } nfs_export;
 
 extern nfs_client *		clientlist[MCL_MAXTYPES];
diff --git a/utils/exportfs/exportfs.c b/utils/exportfs/exportfs.c
index 1eca567..8c3f634 100644
--- a/utils/exportfs/exportfs.c
+++ b/utils/exportfs/exportfs.c
@@ -218,6 +218,7 @@ export_all(int verbose)
 			exp->m_xtabent = 1;
 			exp->m_mayexport = 1;
 			exp->m_changed = 1;
+			exp->m_warned = 0;
 		}
 	}
 }
@@ -274,6 +275,7 @@ exportfs(char *arg, char *options, int verbose)
 	exp->m_xtabent = 1;
 	exp->m_mayexport = 1;
 	exp->m_changed = 1;
+	exp->m_warned = 0;
 	if (hp) free (hp);
 }
 
diff --git a/utils/mountd/cache.c b/utils/mountd/cache.c
index ed7fe35..5612a9e 100644
--- a/utils/mountd/cache.c
+++ b/utils/mountd/cache.c
@@ -520,10 +520,12 @@ void nfsd_export(FILE *f)
 			if (!found) {
 				found = exp;
 				found_type = i;
-			} else if (found_type == i) {
-				xlog(L_WARNING, "%s exported to both %s and %s in %s",
-				     path, exp->m_client->m_hostname, found->m_client->m_hostname,
+			} else if (found_type == i && found->m_warned == 0) {
+				xlog(L_WARNING, "%s exported to both %s and %s, "
+				     "arbitrarily choosing options from first",
+				     path, found->m_client->m_hostname, exp->m_client->m_hostname,
 				     dom);
+				found->m_warned = 1;
 			}
 		}
 	}