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PROLOG | NAME | SYNOPSIS | DESCRIPTION | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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utmpx.h(0P) POSIX Programmer's Manual utmpx.h(0P)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
utmpx.h — user accounting database definitions
#include <utmpx.h>
The <utmpx.h> header shall define the utmpx structure that shall
include at least the following members:
char ut_user[] User login name.
char ut_id[] Unspecified initialization process identifier.
char ut_line[] Device name.
pid_t ut_pid Process ID.
short ut_type Type of entry.
struct timeval ut_tv Time entry was made.
The <utmpx.h> header shall define the pid_t type through typedef,
as described in <sys/types.h>.
The <utmpx.h> header shall define the timeval structure as
described in <sys/time.h>.
Inclusion of the <utmpx.h> header may also make visible all
symbols from <sys/time.h>.
The <utmpx.h> header shall define the following symbolic
constants as possible values for the ut_type member of the utmpx
structure:
EMPTY No valid user accounting information.
BOOT_TIME Identifies time of system boot.
OLD_TIME Identifies time when system clock changed.
NEW_TIME Identifies time after system clock changed.
USER_PROCESS Identifies a process.
INIT_PROCESS Identifies a process spawned by the init process.
LOGIN_PROCESS Identifies the session leader of a logged-in user.
DEAD_PROCESS Identifies a session leader who has exited.
The following shall be declared as functions and may also be
defined as macros. Function prototypes shall be provided.
void endutxent(void);
struct utmpx *getutxent(void);
struct utmpx *getutxid(const struct utmpx *);
struct utmpx *getutxline(const struct utmpx *);
struct utmpx *pututxline(const struct utmpx *);
void setutxent(void);
The following sections are informative.
None.
None.
None.
sys_time.h(0p), sys_types.h(0p)
The System Interfaces volume of POSIX.1‐2017, endutxent(3p)
Portions of this text are reprinted and reproduced in electronic
form from IEEE Std 1003.1-2017, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The
Open Group Base Specifications Issue 7, 2018 Edition, Copyright
(C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any
discrepancy between this version and the original IEEE and The
Open Group Standard, the original IEEE and The Open Group
Standard is the referee document. The original Standard can be
obtained online at http://www.opengroup.org/unix/online.html .
Any typographical or formatting errors that appear in this page
are most likely to have been introduced during the conversion of
the source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2017 utmpx.h(0P)
Pages that refer to this page: endutxent(3p)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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