include/pwd.h

   1 /*-
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  * (c) UNIX System Laboratories, Inc.
   5  * All or some portions of this file are derived from material licensed
   6  * to the University of California by American Telephone and Telegraph
   7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   8  * the permission of UNIX System Laboratories, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)pwd.h       8.2 (Berkeley) 1/21/94
  35  * $FreeBSD: src/include/pwd.h,v 1.17 2009/03/14 19:13:01 das Exp $
  36  */
  37
  38 #ifndef _PWD_H_
  39 #define _PWD_H_
  40
  41 #include <sys/cdefs.h>
  42 #include <machine/stdint.h>
  43
  44 #ifndef _GID_T_DECLARED
  45 typedef __uint32_t      gid_t;
  46 #define _GID_T_DECLARED
  47 #endif
  48
  49 #ifndef _SIZE_T_DECLARED
  50 typedef __size_t        size_t;
  51 #define _SIZE_T_DECLARED
  52 #endif
  53
  54 #ifndef _TIME_T_DECLARED
  55 typedef __time_t        time_t;
  56 #define _TIME_T_DECLARED
  57 #endif
  58
  59 #ifndef _UID_T_DECLARED
  60 typedef __uint32_t      uid_t;
  61 #define _UID_T_DECLARED
  62 #endif
  63
  64 #define _PATH_PWD               "/etc"
  65 #define _PATH_PASSWD            "/etc/passwd"
  66 #define _PASSWD                 "passwd"
  67 #define _PATH_MASTERPASSWD      "/etc/master.passwd"
  68 #define _MASTERPASSWD           "master.passwd"
  69
  70 #define _PATH_MP_DB             "/etc/pwd.db"
  71 #define _MP_DB                  "pwd.db"
  72 #define _PATH_SMP_DB            "/etc/spwd.db"
  73 #define _SMP_DB                 "spwd.db"
  74
  75 #define _PATH_PWD_MKDB          "/usr/sbin/pwd_mkdb"
  76
  77 /* Historically, the keys in _PATH_MP_DB/_PATH_SMP_DB had the format
  78  * `1 octet tag | key', where the tag is one of the _PW_KEY* values
  79  * listed below.  These values happen to be ASCII digits.
  80  * The tag is now still a single octet, but the
  81  * upper 4 bits are interpreted as a version.  Previous format
  82  * entries are version `3' -- this conveniently results in the same
  83  * key values as before.  The new, architecture-independent entries
  84  * are version `4'.
  85  * As it happens, some applications read the database directly.
  86  * (Bad app, no cookie!)  Thus, we leave the _PW_KEY* symbols at their
  87  * old values so these apps still work.  Consequently
  88  * we have to muck around a bit more to get the correct, versioned
  89  * tag, and that is what the _PW_VERSIONED macro is about.
  90  */
  91
  92 #define _PW_VERSION_MASK        '\xF0'
  93 #define _PW_VERSIONED(x, v)     ((unsigned char)(((x) & 0xCF) | ((v)<<4)))
  94
  95 #define _PW_KEYBYNAME           '\x31'  /* stored by name */
  96 #define _PW_KEYBYNUM            '\x32'  /* stored by entry in the "file" */
  97 #define _PW_KEYBYUID            '\x33'  /* stored by uid */
  98 #define _PW_KEYYPENABLED        '\x34'  /* YP is enabled */
  99 #define _PW_KEYYPBYNUM          '\x35'  /* special +@netgroup entries */
 100
 101 /* The database also contains a key to indicate the format version of
 102  * the entries therein.  There may be other, older versioned entries
 103  * as well.
 104  */
 105 #define _PWD_VERSION_KEY        "\xFF" "VERSION"
 106 #define _PWD_CURRENT_VERSION    '\x04'
 107
 108 #define _PASSWORD_EFMT1         '_'     /* extended encryption format */
 109
 110 #define _PASSWORD_LEN           128     /* max length, not counting NULL */
 111
 112 struct passwd {
 113         char    *pw_name;               /* user name */
 114         char    *pw_passwd;             /* encrypted password */
 115         uid_t   pw_uid;                 /* user uid */
 116         gid_t   pw_gid;                 /* user gid */
 117         time_t  pw_change;              /* password change time */
 118         char    *pw_class;              /* user access class */
 119         char    *pw_gecos;              /* Honeywell login info */
 120         char    *pw_dir;                /* home directory */
 121         char    *pw_shell;              /* default shell */
 122         time_t  pw_expire;              /* account expiration */
 123         int     pw_fields;              /* internal: fields filled in */
 124 };
 125
 126 /* Mapping from fields to bits for pw_fields. */
 127 #define _PWF(x)         (1 << x)
 128 #define _PWF_NAME       _PWF(0)
 129 #define _PWF_PASSWD     _PWF(1)
 130 #define _PWF_UID        _PWF(2)
 131 #define _PWF_GID        _PWF(3)
 132 #define _PWF_CHANGE     _PWF(4)
 133 #define _PWF_CLASS      _PWF(5)
 134 #define _PWF_GECOS      _PWF(6)
 135 #define _PWF_DIR        _PWF(7)
 136 #define _PWF_SHELL      _PWF(8)
 137 #define _PWF_EXPIRE     _PWF(9)
 138
 139 /* XXX These flags are bogus.  With nsswitch, there are many
 140  * possible sources and they cannot be represented in a small integer.
 141  */
 142 #define _PWF_SOURCE     0x3000
 143 #define _PWF_FILES      0x1000
 144 #define _PWF_NIS        0x2000
 145 #define _PWF_HESIOD     0x3000
 146
 147 __BEGIN_DECLS
 148 struct passwd   *getpwnam(const char *);
 149 struct passwd   *getpwuid(uid_t);
 150
 151 #if __XSI_VISIBLE >= 500
 152 void             endpwent(void);
 153 struct passwd   *getpwent(void);
 154 void             setpwent(void);
 155 #endif
 156
 157 #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 500
 158 int              getpwnam_r(const char *, struct passwd *, char *, size_t,
 159                     struct passwd **);
 160 int              getpwuid_r(uid_t, struct passwd *, char *, size_t,
 161                     struct passwd **);
 162 #endif
 163
 164 #if __BSD_VISIBLE
 165 int              getpwent_r(struct passwd *, char *, size_t, struct passwd **);
 166 int              setpassent(int);
 167 const char      *user_from_uid(uid_t, int);
 168 #endif
 169 __END_DECLS
 170
 171 #endif /* !_PWD_H_ */