2005-07-05 Thorsten Kukuk <kukuk@suse.de>

	[BZ #1111]
	* nis/nss_compat/compat-grp.c (internal_getgrgid_r): Check if NSS
	module provides getgrgid_r.
	(getgrnam_plusgroup): Preserve original return value.
	* nis/nss_compat/compat-pwd.c (getpwnam_plususer): Preserve
	original return value.
	* nis/nss_compat/compat-spwd.c (getspnam_plususer): Likewise.

nis/nss_compat/compat-grp.c

@@ -229,9 +229,10 @@ getgrnam_plusgroup (const char *name, struct group *result, ent_t *ent,
   if (!nss_getgrnam_r)
     return NSS_STATUS_UNAVAIL;
 
-  if (nss_getgrnam_r (name, result, buffer, buflen, errnop) !=
-      NSS_STATUS_SUCCESS)
-    return NSS_STATUS_NOTFOUND;
+  enum nss_status status = nss_getgrnam_r (name, result, buffer, buflen,
+					   errnop);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
 
   if (in_blacklist (result->gr_name, strlen (result->gr_name), ent))
     return NSS_STATUS_NOTFOUND;
@@ -551,7 +552,7 @@ internal_getgrgid_r (gid_t gid, struct group *result, ent_t *ent,
 	     !(parse_res = _nss_files_parse_grent (p, result, data, buflen,
 						   errnop)));
 
-      if (parse_res == -1)
+      if (__builtin_expect (parse_res == -1, 0))
 	/* The parser ran out of space.  */
 	goto erange_reset;
 
@@ -589,9 +590,11 @@ internal_getgrgid_r (gid_t gid, struct group *result, ent_t *ent,
       /* +:... */
       if (result->gr_name[0] == '+' && result->gr_name[1] == '\0')
 	{
-	  enum nss_status status;
+	  if (!nss_getgrgid_r)
+	    return NSS_STATUS_UNAVAIL;
 
-	  status = nss_getgrgid_r (gid, result, buffer, buflen, errnop);
+	  enum nss_status status = nss_getgrgid_r (gid, result, buffer, buflen,
+						   errnop);
 	  if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
 	    return NSS_STATUS_NOTFOUND;
 	  else

nis/nss_compat/compat-pwd.c

@@ -453,29 +453,27 @@ static enum nss_status
 getpwnam_plususer (const char *name, struct passwd *result, ent_t *ent,
 		   char *buffer, size_t buflen, int *errnop)
 {
-  struct passwd pwd;
-  char *p;
-  size_t plen;
-
   if (!nss_getpwnam_r)
     return NSS_STATUS_UNAVAIL;
 
+  struct passwd pwd;
   memset (&pwd, '\0', sizeof (struct passwd));
 
   copy_pwd_changes (&pwd, result, NULL, 0);
 
-  plen = pwd_need_buflen (&pwd);
+  size_t plen = pwd_need_buflen (&pwd);
   if (plen > buflen)
     {
       *errnop = ERANGE;
       return NSS_STATUS_TRYAGAIN;
     }
-  p = buffer + (buflen - plen);
+  char *p = buffer + (buflen - plen);
   buflen -= plen;
 
-  if (nss_getpwnam_r (name, result, buffer, buflen, errnop) !=
-      NSS_STATUS_SUCCESS)
-    return NSS_STATUS_NOTFOUND;
+  enum nss_status status = nss_getpwnam_r (name, result, buffer, buflen,
+					   errnop);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
 
   if (in_blacklist (result->pw_name, strlen (result->pw_name), ent))
     return NSS_STATUS_NOTFOUND;

nis/nss_compat/compat-spwd.c

@@ -401,13 +401,10 @@ static enum nss_status
 getspnam_plususer (const char *name, struct spwd *result, ent_t *ent,
 		   char *buffer, size_t buflen, int *errnop)
 {
-  struct spwd pwd;
-  char *p;
-  size_t plen;
-
   if (!nss_getspnam_r)
     return NSS_STATUS_UNAVAIL;
 
+  struct spwd pwd;
   memset (&pwd, '\0', sizeof (struct spwd));
   pwd.sp_warn = -1;
   pwd.sp_inact = -1;
@@ -416,18 +413,19 @@ getspnam_plususer (const char *name, struct spwd *result, ent_t *ent,
 
   copy_spwd_changes (&pwd, result, NULL, 0);
 
-  plen = spwd_need_buflen (&pwd);
+  size_t plen = spwd_need_buflen (&pwd);
   if (plen > buflen)
     {
       *errnop = ERANGE;
       return NSS_STATUS_TRYAGAIN;
     }
-  p = buffer + (buflen - plen);
+  char *p = buffer + (buflen - plen);
   buflen -= plen;
 
-  if (nss_getspnam_r (name, result, buffer, buflen, errnop) !=
-      NSS_STATUS_SUCCESS)
-    return NSS_STATUS_NOTFOUND;
+  enum nss_status status = nss_getspnam_r (name, result, buffer, buflen,
+					   errnop);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
 
   if (in_blacklist (result->sp_namp, strlen (result->sp_namp), ent))
     return NSS_STATUS_NOTFOUND;