2.5-18.1

[thirdparty/glibc.git] / nis / nss_nisplus / nisplus-spwd.c

diff --git a/nis/nss_nisplus/nisplus-spwd.c b/nis/nss_nisplus/nisplus-spwd.c
index c317469137b2594eb8636ea9f6b93af81168a184..f256f3eb907152762f23dc81521e26c5cd2382ac 100644 (file)
--- a/nis/nss_nisplus/nisplus-spwd.c
+++ b/nis/nss_nisplus/nisplus-spwd.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1997, 2001, 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2001, 2002, 2003, 2005, 2007
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
 
@@ -30,29 +31,12 @@
 __libc_lock_define_initialized (static, lock)
 
 static nis_result *result;
-static nis_name tablename_val;
-static u_long tablename_len;
 
-static enum nss_status
-_nss_create_tablename (int *errnop)
-{
-  if (tablename_val == NULL)
-    {
-      char buf [40 + strlen (nis_local_directory ())];
-      char *p;
+/* Defined in nisplus-pwd.c.  */
+extern nis_name pwd_tablename_val attribute_hidden;
+extern size_t pwd_tablename_len attribute_hidden;
+extern enum nss_status _nss_pwd_create_tablename (int *errnop);
 
-      p = __stpcpy (buf, "passwd.org_dir.");
-      p = __stpcpy (p, nis_local_directory ());
-      tablename_val = __strdup (buf);
-      if (tablename_val == NULL)
-       {
-         *errnop = errno;
-         return NSS_STATUS_TRYAGAIN;
-       }
-      tablename_len = strlen (tablename_val);
-    }
-  return NSS_STATUS_SUCCESS;
-}
 
 enum nss_status
 _nss_nisplus_setspent (int stayopen)
@@ -62,12 +46,14 @@ _nss_nisplus_setspent (int stayopen)
 
   __libc_lock_lock (lock);
 
-  if (result)
-    nis_freeresult (result);
-  result = NULL;
+  if (result != NULL)
+    {
+      nis_freeresult (result);
+      result = NULL;
+    }
 
-  if (tablename_val == NULL)
-    status = _nss_create_tablename (&err);
+  if (pwd_tablename_val == NULL)
+    status = _nss_pwd_create_tablename (&err);
 
   __libc_lock_unlock (lock);
 
@@ -79,9 +65,11 @@ _nss_nisplus_endspent (void)
 {
   __libc_lock_lock (lock);
 
-  if (result)
-    nis_freeresult (result);
-  result = NULL;
+  if (result != NULL)
+    {
+      nis_freeresult (result);
+      result = NULL;
+    }
 
   __libc_lock_unlock (lock);
 
@@ -103,25 +91,32 @@ internal_nisplus_getspent_r (struct spwd *sp, char *buffer, size_t buflen,
        {
          saved_res = NULL;
 
-          if (tablename_val == NULL)
+          if (pwd_tablename_val == NULL)
            {
-             enum nss_status status = _nss_create_tablename (errnop);
+             enum nss_status status = _nss_pwd_create_tablename (errnop);
 
              if (status != NSS_STATUS_SUCCESS)
                return status;
            }
 
-         result = nis_first_entry (tablename_val);
+         result = nis_first_entry (pwd_tablename_val);
+         if (result == NULL)
+           {
+             *errnop = errno;
+             return NSS_STATUS_TRYAGAIN;
+           }
          if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
            return niserr2nss (result->status);
        }
       else
        {
-         nis_result *res;
-
          saved_res = result;
-         res = nis_next_entry (tablename_val, &result->cookie);
-         result = res;
+         result = nis_next_entry (pwd_tablename_val, &result->cookie);
+         if (result == NULL)
+           {
+             *errnop = errno;
+             return NSS_STATUS_TRYAGAIN;
+           }
          if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
            {
              nis_freeresult (saved_res);
@@ -131,19 +126,18 @@ internal_nisplus_getspent_r (struct spwd *sp, char *buffer, size_t buflen,
 
       parse_res = _nss_nisplus_parse_spent (result, sp, buffer,
                                            buflen, errnop);
-      if (parse_res == -1)
+      if (__builtin_expect (parse_res == -1, 0))
        {
          nis_freeresult (result);
          result = saved_res;
          *errnop = ERANGE;
          return NSS_STATUS_TRYAGAIN;
        }
-      else
-       {
-         if (saved_res)
-           nis_freeresult (saved_res);
-       }
-    } while (!parse_res);
+
+      if (saved_res != NULL)
+       nis_freeresult (saved_res);
+    }
+  while (!parse_res);
 
   return NSS_STATUS_SUCCESS;
 }
@@ -169,9 +163,9 @@ _nss_nisplus_getspnam_r (const char *name, struct spwd *sp,
 {
   int parse_res;
 
-  if (tablename_val == NULL)
+  if (pwd_tablename_val == NULL)
     {
-      enum nss_status status = _nss_create_tablename (errnop);
+      enum nss_status status = _nss_pwd_create_tablename (errnop);
 
       if (status != NSS_STATUS_SUCCESS)
        return status;
@@ -182,48 +176,47 @@ _nss_nisplus_getspnam_r (const char *name, struct spwd *sp,
       *errnop = EINVAL;
       return NSS_STATUS_NOTFOUND;
     }
-  else
-    {
-      nis_result *result;
-      char buf[strlen (name) + 24 + tablename_len];
-      int olderr = errno;
 
-      sprintf (buf, "[name=%s],%s", name, tablename_val);
+  nis_result *result;
+  char buf[strlen (name) + 9 + pwd_tablename_len];
+  int olderr = errno;
 
-      result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
+  snprintf (buf, sizeof (buf), "[name=%s],%s", name, pwd_tablename_val);
 
-      if (result == NULL)
-       {
-         *errnop = ENOMEM;
-         return NSS_STATUS_TRYAGAIN;
-       }
-      if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
-       {
-         enum nss_status status = niserr2nss (result->status);
+  result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, NULL, NULL);
 
-         __set_errno (olderr);
+  if (result == NULL)
+    {
+      *errnop = ENOMEM;
+      return NSS_STATUS_TRYAGAIN;
+    }
 
-         nis_freeresult (result);
-         return status;
-       }
+  if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS, 0))
+    {
+      enum nss_status status = niserr2nss (result->status);
+
+      __set_errno (olderr);
 
-      parse_res = _nss_nisplus_parse_spent (result, sp, buffer, buflen,
-                                           errnop);
       nis_freeresult (result);
+      return status;
+    }
+
+  parse_res = _nss_nisplus_parse_spent (result, sp, buffer, buflen, errnop);
+  nis_freeresult (result);
 
-      if (parse_res < 1)
+  if (__builtin_expect (parse_res < 1, 0))
+    {
+      if (parse_res == -1)
        {
-         if (parse_res == -1)
-           {
-             *errnop = ERANGE;
-             return NSS_STATUS_TRYAGAIN;
-           }
-         else
-           {
-             __set_errno (olderr);
-             return NSS_STATUS_NOTFOUND;
-           }
+         *errnop = ERANGE;
+         return NSS_STATUS_TRYAGAIN;
+       }
+      else
+       {
+         __set_errno (olderr);
+         return NSS_STATUS_NOTFOUND;
        }
-      return NSS_STATUS_SUCCESS;
     }
+
+  return NSS_STATUS_SUCCESS;
 }