From 299210c1fa67e2dfb564475986fce11cd33db9ad Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Thu, 16 Jul 2020 16:12:46 +0200
Subject: nss_files: Consolidate file opening in __nss_files_fopen

Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
---
 nss/nss_files/files-XXX.c        | 3 ++-
 nss/nss_files/files-alias.c      | 5 +++--
 nss/nss_files/files-initgroups.c | 6 ++----
 nss/nss_files/files-netgrp.c     | 5 ++---
 4 files changed, 9 insertions(+), 10 deletions(-)

(limited to 'nss/nss_files')

diff --git a/nss/nss_files/files-XXX.c b/nss/nss_files/files-XXX.c
index 73d2d5cb31..9cc5137953 100644
--- a/nss/nss_files/files-XXX.c
+++ b/nss/nss_files/files-XXX.c
@@ -22,6 +22,7 @@
 #include <fcntl.h>
 #include <libc-lock.h>
 #include "nsswitch.h"
+#include <nss_files.h>
 
 #include <kernel-features.h>
 
@@ -74,7 +75,7 @@ internal_setent (FILE **stream)
 
   if (*stream == NULL)
     {
-      *stream = fopen (DATAFILE, "rce");
+      *stream = __nss_files_fopen (DATAFILE);
 
       if (*stream == NULL)
 	status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
diff --git a/nss/nss_files/files-alias.c b/nss/nss_files/files-alias.c
index 6aff7b4c10..43fb2c49a5 100644
--- a/nss/nss_files/files-alias.c
+++ b/nss/nss_files/files-alias.c
@@ -29,6 +29,7 @@
 #include <kernel-features.h>
 
 #include "nsswitch.h"
+#include <nss_files.h>
 
 NSS_DECLARE_MODULE_FUNCTIONS (files)
 
@@ -49,7 +50,7 @@ internal_setent (FILE **stream)
 
   if (*stream == NULL)
     {
-      *stream = fopen ("/etc/aliases", "rce");
+      *stream = __nss_files_fopen ("/etc/aliases");
 
       if (*stream == NULL)
 	status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
@@ -215,7 +216,7 @@ get_next_alias (FILE *stream, const char *match, struct aliasent *result,
 
 		      first_unused = cp;
 
-		      listfile = fopen (&cp[9], "rce");
+		      listfile = __nss_files_fopen (&cp[9]);
 		      /* If the file does not exist we simply ignore
 			 the statement.  */
 		      if (listfile != NULL
diff --git a/nss/nss_files/files-initgroups.c b/nss/nss_files/files-initgroups.c
index 577d6ddf1e..b6f505984a 100644
--- a/nss/nss_files/files-initgroups.c
+++ b/nss/nss_files/files-initgroups.c
@@ -26,6 +26,7 @@
 #include <stdlib.h>
 #include <scratch_buffer.h>
 #include <nss.h>
+#include <nss_files.h>
 
 NSS_DECLARE_MODULE_FUNCTIONS (files)
 
@@ -34,16 +35,13 @@ _nss_files_initgroups_dyn (const char *user, gid_t group, long int *start,
 			   long int *size, gid_t **groupsp, long int limit,
 			   int *errnop)
 {
-  FILE *stream = fopen ("/etc/group", "rce");
+  FILE *stream = __nss_files_fopen ("/etc/group");
   if (stream == NULL)
     {
       *errnop = errno;
       return *errnop == ENOMEM ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
     }
 
-  /* No other thread using this stream.  */
-  __fsetlocking (stream, FSETLOCKING_BYCALLER);
-
   char *line = NULL;
   size_t linelen = 0;
   enum nss_status status = NSS_STATUS_SUCCESS;
diff --git a/nss/nss_files/files-netgrp.c b/nss/nss_files/files-netgrp.c
index 2c580af01d..66e16b7c77 100644
--- a/nss/nss_files/files-netgrp.c
+++ b/nss/nss_files/files-netgrp.c
@@ -26,6 +26,7 @@
 #include <string.h>
 #include "nsswitch.h"
 #include "netgroup.h"
+#include <nss_files.h>
 
 NSS_DECLARE_MODULE_FUNCTIONS (files)
 
@@ -64,7 +65,7 @@ _nss_files_setnetgrent (const char *group, struct __netgrent *result)
     return NSS_STATUS_UNAVAIL;
 
   /* Find the netgroups file and open it.  */
-  fp = fopen (DATAFILE, "rce");
+  fp = __nss_files_fopen (DATAFILE);
   if (fp == NULL)
     status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
   else
@@ -78,8 +79,6 @@ _nss_files_setnetgrent (const char *group, struct __netgrent *result)
       status = NSS_STATUS_NOTFOUND;
       result->cursor = result->data;
 
-      __fsetlocking (fp, FSETLOCKING_BYCALLER);
-
       while (!feof_unlocked (fp))
 	{
 	  ssize_t curlen = getline (&line, &line_len, fp);
-- 
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