ENDUTXENT(3)

ENDUTXENT(3) | Library Functions Manual | ENDUTXENT(3)

# NAME

`endutxent`, `getutxent`, `getutxid`, `getutxline`, `pututxline`, `setutxent` —
user accounting database functions

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

`#include <utmpx.h>`

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);

# DESCRIPTION

These functions provide access to the utmpx(5) user accounting database.

`getutxent`() reads the next entry from the database; if the database was not yet open, it also opens it. `setutxent`() resets the database, so that the next `getutxent`() call will get the first entry. `endutxent`() closes the database.

`getutxid`() returns the next entry of the type specified in its argument's ut_type field, or `NULL` if none is found. `getutxline`() returns the next `LOGIN_PROCESS` or `USER_PROCESS` entry which has the same name as specified in the ut_line field, or `NULL` if no match is found.

`pututxline`() adds the argument utmpx(5) entry line to the accounting database, replacing a previous entry for the same user if it exists.

## The utmpx structure

The `utmpx` structure has the following definition:

    struct utmpx {
            char ut_name[_UTX_USERSIZE];    /* login name */
            char ut_id[_UTX_IDSIZE];        /* inittab id */
            char ut_line[_UTX_LINESIZE];    /* tty name */
            char ut_host[_UTX_HOSTSIZE];    /* host name */
            uint16_t ut_session;            /* session id used for windowing */
            uint16_t ut_type;               /* type of this entry */
            pid_t ut_pid;                   /* process id creating the entry */
            struct {
                    uint16_t e_termination; /* process termination signal */
                    uint16_t e_exit;        /* process exit status */
            } ut_exit;
            struct sockaddr_storage ut_ss;  /* address where entry was made from */
            struct timeval ut_tv;           /* time entry was created */
            uint32_t ut_pad[10];            /* reserved for future use */
    };

Valid entries for ut_type are:

`BOOT_TIME`
  Time of a system boot.
`DEAD_PROCESS`
  A session leader exited.
`EMPTY`
  No valid user accounting information.
`INIT_PROCESS`
  A process spawned by init(8).
`LOGIN_PROCESS`
  The session leader of a logged-in user.
`NEW_TIME`
  Time after system clock change.
`OLD_TIME`
  Time before system clock change.
`RUN_LVL`
  Run level. Provided for compatibility, not used on NetBSD.
`USER_PROCESS`
  A user process.

# RETURN VALUES

`getutxent`() returns the next entry, or `NULL` on failure (end of database or problems reading from the database). `getutxid`() and `getutxline`() return the matching structure on success, or `NULL` if no match was found. `pututxline`() returns the structure that was successfully written, or `NULL`.

# SEE ALSO

logwtmpx(3), utmpx(5)

# STANDARDS

The `endutxent`(), `getutxent`(), `getutxid`(), `getutxline`(), `pututxline`(), `setutxent`() all conform to IEEE Std 1003.1-2001 (“POSIX.1”) (XSI extension), and previously to X/Open Portability Guide Issue 4, Version 2 (“XPG4.2”). The fields ut_user, ut_id, ut_line, ut_pid, ut_type, and ut_tv conform to IEEE Std 1003.1-2001 (“POSIX.1”) (XSI extension), and previously to X/Open Portability Guide Issue 4, Version 2 (“XPG4.2”).

September 26, 2002 | NetBSD 9.3