shadow/shadow.h

   1 /* Copyright (C) 1996 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 Boston, MA 02111-1307, USA.  */
  18
  19 /* Declaration of types and functions for shadow password suite.  */
  20
  21 #ifndef _SHADOW_H
  22
  23 #define _SHADOW_H       1
  24 #include <features.h>
  25
  26 #define __need_FILE
  27 #include <stdio.h>
  28 #define __need_time_t
  29 #include <time.h>
  30
  31 /* Paths to the userd files.  */
  32 #define SHADOW "/etc/shadow"
  33
  34
  35 __BEGIN_DECLS
  36
  37 /* Structure of the password file.  */
  38 struct spwd
  39 {
  40   char *sp_namp;                /* Login name.  */
  41   char *sp_pwdp;                /* Encrypted password.  */
  42   __time_t sp_lstchg;           /* Date of last change.  */
  43   __time_t sp_min;              /* Minimum number of days between changes.  */
  44   __time_t sp_max;              /* Maximum number of days between changes.  */
  45   __time_t sp_warn;             /* Number of days to warn user to change
  46                                    the password.  */
  47   __time_t sp_inact;            /* Number of days the account may be
  48                                    inactive.  */
  49   __time_t sp_expire;           /* Number of days since 1970-01-01 until
  50                                    account expires.  */
  51   unsigned long int sp_flag;    /* Reserved.  */
  52 };
  53
  54
  55 /* Open database for reading.  */
  56 extern void setspent __P ((void));
  57
  58 /* Close database.  */
  59 extern void endspent __P ((void));
  60
  61 /* Get next entry from database, perhaps after opening the file.  */
  62 extern struct spwd *getspent __P ((void));
  63
  64 /* Get shadow entry matching NAME.  */
  65 extern struct spwd *getspnam __P ((__const char *__name));
  66
  67 /* Read shadow entry from STRING.  */
  68 extern struct spwd *sgetspent __P ((__const char *__string));
  69
  70 /* Read next shadow entry from STREAM.  */
  71 extern struct spwd *fgetspent __P ((FILE *__stream));
  72
  73 /* Write line containing shadow password entry to stream.  */
  74 extern int putspent __P ((__const struct spwd *__p, FILE *__stream));
  75
  76
  77 #ifdef  __USE_REENTRANT
  78 /* Reentrant versions of some of the functions above.  */
  79 extern struct spwd *__getspent_r __P ((struct spwd *__result_buf,
  80                                        char *__buffer, int __buflen));
  81 extern struct spwd *getspent_r __P ((struct spwd *__result_buf,
  82                                      char *__buffer, int __buflen));
  83
  84 extern struct spwd *__getspnam_r __P ((__const char *__name,
  85                                        struct spwd *__result_buf,
  86                                        char *__buffer, int __buflen));
  87 extern struct spwd *getspnam_r __P ((__const char *__name,
  88                                      struct spwd *__result_buf,
  89                                      char *__buffer, int __buflen));
  90
  91 extern struct spwd *__sgetspent_r __P ((__const char *__string,
  92                                         struct spwd *__result_buf,
  93                                         char *__buffer, int __buflen));
  94 extern struct spwd *sgetspent_r __P ((__const char *__string,
  95                                       struct spwd *__result_buf,
  96                                       char *__buffer, int __buflen));
  97
  98 extern struct spwd *__fgetspent_r __P ((FILE *__stream,
  99                                         struct spwd *__result_buf,
 100                                         char *__buffer, int __buflen));
 101 extern struct spwd *fgetspent_r __P ((FILE *__stream,
 102                                       struct spwd *__result_buf,
 103                                       char *__buffer, int __buflen));
 104 #endif  /* reentrant */
 105
 106
 107 /* Protect password file against multi writers.  */
 108 extern int __lckpwdf __P ((void));
 109 extern int lckpwdf __P ((void));
 110
 111 /* Unlock password file.  */
 112 extern int __ulckpwdf __P ((void));
 113 extern int ulckpwdf __P ((void));
 114
 115 __END_DECLS
 116
 117 #endif /* shadow.h */