shadow/shadow.h

   1 /* Copyright (C) 1996, 1997, 1998, 1999 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* Declaration of types and functions for shadow password suite.  */
  20
  21 #ifndef _SHADOW_H
  22 #define _SHADOW_H       1
  23
  24 #include <features.h>
  25
  26 #include <paths.h>
  27
  28 #define __need_FILE
  29 #include <stdio.h>
  30 #define __need_size_t
  31 #include <stddef.h>
  32
  33 /* Paths to the user database files.  */
  34 #define SHADOW _PATH_SHADOW
  35
  36
  37 __BEGIN_DECLS
  38
  39 /* Structure of the password file.  */
  40 struct spwd
  41   {
  42     char *sp_namp;              /* Login name.  */
  43     char *sp_pwdp;              /* Encrypted password.  */
  44     long int sp_lstchg;         /* Date of last change.  */
  45     long int sp_min;            /* Minimum number of days between changes.  */
  46     long int sp_max;            /* Maximum number of days between changes.  */
  47     long int sp_warn;           /* Number of days to warn user to change
  48                                    the password.  */
  49     long int sp_inact;          /* Number of days the account may be
  50                                    inactive.  */
  51     long int sp_expire;         /* Number of days since 1970-01-01 until
  52                                    account expires.  */
  53     unsigned long int sp_flag;  /* Reserved.  */
  54   };
  55
  56
  57 /* Open database for reading.  */
  58 extern void setspent (void) __THROW;
  59
  60 /* Close database.  */
  61 extern void endspent (void) __THROW;
  62
  63 /* Get next entry from database, perhaps after opening the file.  */
  64 extern struct spwd *getspent (void) __THROW;
  65
  66 /* Get shadow entry matching NAME.  */
  67 extern struct spwd *getspnam (__const char *__name) __THROW;
  68
  69 /* Read shadow entry from STRING.  */
  70 extern struct spwd *sgetspent (__const char *__string) __THROW;
  71
  72 /* Read next shadow entry from STREAM.  */
  73 extern struct spwd *fgetspent (FILE *__stream) __THROW;
  74
  75 /* Write line containing shadow password entry to stream.  */
  76 extern int putspent (__const struct spwd *__p, FILE *__stream) __THROW;
  77
  78
  79 #ifdef __USE_MISC
  80 /* Reentrant versions of some of the functions above.  */
  81 extern int getspent_r (struct spwd *__result_buf, char *__buffer,
  82                        size_t __buflen, struct spwd **__result) __THROW;
  83
  84 extern int getspnam_r (__const char *__name, struct spwd *__result_buf,
  85                        char *__buffer, size_t __buflen,
  86                        struct spwd **__result)__THROW;
  87
  88 extern int sgetspent_r (__const char *__string, struct spwd *__result_buf,
  89                         char *__buffer, size_t __buflen,
  90                         struct spwd **__result) __THROW;
  91
  92 extern int fgetspent_r (FILE *__stream, struct spwd *__result_buf,
  93                         char *__buffer, size_t __buflen,
  94                         struct spwd **__result) __THROW;
  95 #endif  /* misc */
  96
  97 /* Protect password file against multi writers.  */
  98 extern int lckpwdf (void) __THROW;
  99
 100 /* Unlock password file.  */
 101 extern int ulckpwdf (void) __THROW;
 102
 103 __END_DECLS
 104
 105 #endif /* shadow.h */