libexport.a: Refactor rmtab_read()

Clean up: Make it easier to add IPv6 support by refactoring part of
rmtab_read() into a helper function.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>

diff --git a/support/export/rmtab.c b/support/export/rmtab.c
index b49e1aaa9c121922d943a4b91cad496b9f9c4924..0ec495c43c80e972d5cededb4946ab74c1718889 100644 (file)
--- a/support/export/rmtab.c
+++ b/support/export/rmtab.c
@@ -19,39 +19,57 @@
 #include "xio.h"
 #include "xlog.h"
 
+/*
+ * See if the entry already exists.  If not,
+ * this was an instantiated wild card, and we
+ * must add it.
+ */
+static void
+rmtab_read_wildcard(struct rmtabent *rep)
+{
+       nfs_export *exp, *exp2;
+       struct hostent *hp;
+
+       hp = gethostbyname(rep->r_client);
+       if (hp == NULL)
+               return;
+       hp = hostent_dup(hp);
+       if (hp == NULL)
+               return;
+
+       exp = export_allowed(hp, rep->r_path);
+       free(hp);
+       if (exp == NULL)
+               return;
+
+       exp2 = export_lookup(rep->r_client, exp->m_export.e_path, 0);
+       if (exp2 == NULL) {
+               struct exportent ee;
+
+               memset(&ee, 0, sizeof(ee));
+               dupexportent(&ee, &exp->m_export);
+
+               ee.e_hostname = rep->r_client;
+               exp2 = export_create(&ee, 0);
+               exp2->m_changed = exp->m_changed;
+       }
+       exp2->m_mayexport = 1;
+}
+
 int
 rmtab_read(void)
 {
        struct rmtabent         *rep;
-       nfs_export              *exp = NULL;
 
        setrmtabent("r");
        while ((rep = getrmtabent(1, NULL)) != NULL) {
-               struct hostent          *hp = NULL;
                int                     htype;
-               
+
                htype = client_gettype(rep->r_client);
-               if ((htype == MCL_FQDN || htype == MCL_SUBNETWORK)
-                   && (hp = gethostbyname (rep->r_client))
-                   && (hp = hostent_dup (hp),
-                       exp = export_allowed (hp, rep->r_path))) {
-                       /* see if the entry already exists, otherwise this was an instantiated
-                        * wild card, and we must add it
-                        */
-                       nfs_export *exp2 = export_lookup(rep->r_client,
-                                                       exp->m_export.e_path, 0);
-                       if (!exp2) {
-                               struct exportent ee;
-                               dupexportent(&ee, &exp->m_export);
-                               ee.e_hostname = rep->r_client;
-                               exp2 = export_create(&ee, 0);
-                               exp2->m_changed = exp->m_changed;
-                       }
-                       free (hp);
-                       exp2->m_mayexport = 1;
-               } else if (hp) /* export_allowed failed */
-                       free(hp);
+               if (htype == MCL_FQDN || htype == MCL_SUBNETWORK)
+                       rmtab_read_wildcard(rep);
        }
+
        if (errno == EINVAL) {
                /* Something goes wrong. We need to fix the rmtab
                   file. */