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annotate lib/readutmp.h @ 2226:1b6275c2d099

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(UT_USER): Define. Accessor macro for the member named ut_user or ut_name.
author Jim Meyering <jim@meyering.net>
date Sun, 30 Jan 2000 16:39:08 +0000
parents ae596af5aea1
children b3a94d16a532
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1 /* Declarations for GNU's read utmp module.
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2 Copyright (C) 1992-2000 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software Foundation,
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16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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17
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18 /* Written by jla; revised by djm */
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19
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20 #ifndef __READUTMP_H__
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21 # define __READUTMP_H__
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22
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23 # ifndef PARAMS
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24 # if defined PROTOTYPES || (defined __STDC__ && __STDC__)
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25 # define PARAMS(Args) Args
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26 # else
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27 # define PARAMS(Args) ()
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28 # endif
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29 # endif
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30
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31 # include <sys/types.h>
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32
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33 /* Accessor macro for the member named ut_user or ut_name. */
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34 # if HAVE_STRUCT_UTMPX_UT_USER || HAVE_STRUCT_UTMP_UT_USER
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35 # define UT_USER(Utmp) Utmp->ut_user
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36 # endif
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37 # if HAVE_STRUCT_UTMPX_UT_NAME || HAVE_STRUCT_UTMP_UT_NAME
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38 # define UT_USER(Utmp) Utmp->ut_name
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39 # endif
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40
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41 # ifdef HAVE_UTMPX_H
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42 # include <utmpx.h>
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43 # define UTMP_STRUCT_NAME utmpx
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44 # define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_tv.tv_sec)
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45 # define SET_UTMP_ENT setutxent
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46 # define GET_UTMP_ENT getutxent
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47 # define END_UTMP_ENT endutxent
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48 # define UTMP_NAME_FUNCTION utmpxname
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49 # else
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50 # include <utmp.h>
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51 # define UTMP_STRUCT_NAME utmp
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52 # define UT_TIME_MEMBER(UT_PTR) ((UT_PTR)->ut_time)
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53 # define SET_UTMP_ENT setutent
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54 # define GET_UTMP_ENT getutent
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55 # define END_UTMP_ENT endutent
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56 # define UTMP_NAME_FUNCTION utmpname
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57 # endif
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58
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59 typedef struct UTMP_STRUCT_NAME STRUCT_UTMP;
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60
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61 # include <time.h>
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62 # ifdef HAVE_SYS_PARAM_H
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63 # include <sys/param.h>
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64 # endif
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65
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66 # include <errno.h>
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67 # ifndef errno
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68 extern int errno;
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69 # endif
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70
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71 # if !defined (UTMP_FILE) && defined (_PATH_UTMP)
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72 # define UTMP_FILE _PATH_UTMP
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73 # endif
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74
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75 # if !defined (WTMP_FILE) && defined (_PATH_WTMP)
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76 # define WTMP_FILE _PATH_WTMP
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77 # endif
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78
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79 # ifdef UTMPX_FILE /* Solaris, SysVr4 */
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80 # undef UTMP_FILE
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81 # define UTMP_FILE UTMPX_FILE
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82 # endif
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83
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84 # ifdef WTMPX_FILE /* Solaris, SysVr4 */
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85 # undef WTMP_FILE
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86 # define WTMP_FILE WTMPX_FILE
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87 # endif
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88
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89 # ifndef UTMP_FILE
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90 # define UTMP_FILE "/etc/utmp"
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91 # endif
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92
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93 # ifndef WTMP_FILE
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94 # define WTMP_FILE "/etc/wtmp"
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95 # endif
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96
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97 # undef PARAMS
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98 # if defined (__STDC__) && __STDC__
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99 # define PARAMS(Args) Args
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100 # else
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101 # define PARAMS(Args) ()
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102 # endif
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103
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104 extern char *extract_trimmed_name PARAMS ((const STRUCT_UTMP *ut));
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105 extern int read_utmp PARAMS ((const char *filename,
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106 int *n_entries, STRUCT_UTMP **utmp_buf));
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107
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108 #endif /* __READUTMP_H__ */