path: root/nss/nss_compat/compat-spwd.c

/* Copyright (C) 1996-2025 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <nss.h>
#include <nsswitch.h>
#include <shadow.h>
#include <stdio_ext.h>
#include <string.h>
#include <libc-lock.h>
#include <kernel-features.h>
#include <nss_files.h>

#include "netgroup.h"
#include "nisdomain.h"

NSS_DECLARE_MODULE_FUNCTIONS (compat)

static nss_action_list ni;
static enum nss_status (*setspent_impl) (int stayopen);
static enum nss_status (*getspnam_r_impl) (const char *name, struct spwd * sp,
					   char *buffer, size_t buflen,
					   int *errnop);
static enum nss_status (*getspent_r_impl) (struct spwd * sp, char *buffer,
					   size_t buflen, int *errnop);
static enum nss_status (*endspent_impl) (void);

/* Get the declaration of the parser function.  */
#define ENTNAME spent
#define STRUCTURE spwd
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>

/* Structure for remembering -@netgroup and -user members ... */
#define BLACKLIST_INITIAL_SIZE 512
#define BLACKLIST_INCREMENT 256
struct blacklist_t
{
  char *data;
  int current;
  int size;
};

struct ent_t
{
  bool netgroup;
  bool files;
  bool first;
  enum nss_status setent_status;
  FILE *stream;
  struct blacklist_t blacklist;
  struct spwd pwd;
  struct __netgrent netgrdata;
};
typedef struct ent_t