1<utmpx.h>(0P)              POSIX Programmer's Manual             <utmpx.h>(0P)
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NAME

6       utmpx.h - user accounting database definitions
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SYNOPSIS

9       #include <utmpx.h>
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DESCRIPTION

12       The  <utmpx.h>  header  shall  define  the  utmpx  structure that shall
13       include at least the following members:
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16              char            ut_user[]  User login name.
17              char            ut_id[]    Unspecified initialization process identifier.
18              char            ut_line[]  Device name.
19              pid_t           ut_pid     Process ID.
20              short           ut_type    Type of entry.
21              struct timeval  ut_tv      Time entry was made.
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23       The pid_t type  shall  be  defined  through  typedef  as  described  in
24       <sys/types.h> .
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26       The timeval structure shall be defined as described in <sys/time.h> .
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28       Inclusion  of  the  <utmpx.h>  header may also make visible all symbols
29       from <sys/time.h>.
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31       The following symbolic constants shall be defined  as  possible  values
32       for the ut_type member of the utmpx structure:
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34       EMPTY  No valid user accounting information.
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36       BOOT_TIME
37              Identifies time of system boot.
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39       OLD_TIME
40              Identifies time when system clock changed.
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42       NEW_TIME
43              Identifies time after system clock changed.
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45       USER_PROCESS
46              Identifies a process.
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48       INIT_PROCESS
49              Identifies a process spawned by the init process.
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51       LOGIN_PROCESS
52              Identifies the session leader of a logged-in user.
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54       DEAD_PROCESS
55              Identifies a session leader who has exited.
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58       The following shall be declared as functions and may also be defined as
59       macros. Function prototypes shall be provided.
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62              void          endutxent(void);
63              struct utmpx *getutxent(void);
64              struct utmpx *getutxid(const struct utmpx *);
65              struct utmpx *getutxline(const struct utmpx *);
66              struct utmpx *pututxline(const struct utmpx *);
67              void          setutxent(void);
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69       The following sections are informative.
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APPLICATION USAGE

72       None.
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RATIONALE

75       None.
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FUTURE DIRECTIONS

78       None.
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SEE ALSO

81       <sys/time.h>,  <sys/types.h>,   the   System   Interfaces   volume   of
82       IEEE Std 1003.1-2001, endutxent()
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85       Portions  of  this text are reprinted and reproduced in electronic form
86       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
87       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
88       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
89       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
90       event of any discrepancy between this version and the original IEEE and
91       The  Open Group Standard, the original IEEE and The Open Group Standard
92       is the referee document. The original Standard can be  obtained  online
93       at http://www.opengroup.org/unix/online.html .
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97IEEE/The Open Group                  2003                        <utmpx.h>(0P)
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