User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |

---

   logwtmp    ( 3 )

---

---

Имя (Name)

updwtmp, logwtmp - append an entry to the wtmp file

---

Синопсис (Synopsis)

#include <utmp.h>

       void updwtmp(const char *wtmp_file, const struct utmp *ut);
       void logwtmp(const char *line, const char *name, const char *host);

       For logwtmp(), link with -lutil.

---

Описание (Description)

updwtmp() appends the utmp structure ut to the wtmp file.

       logwtmp() constructs a utmp structure using line, name, host,
       current time, and current process ID.  Then it calls updwtmp() to
       append the structure to the wtmp file.

---

Файлы (Files)

/var/log/wtmp
              database of past user logins

---

Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

       ┌─────────────────────┬───────────────┬──────────────────────────┐
       │Interface            │ Attribute     │ Value                    │
       ├─────────────────────┼───────────────┼──────────────────────────┤
       │updwtmp(), logwtmp() │ Thread safety │ MT-Unsafe sig:ALRM timer │
       └─────────────────────┴───────────────┴──────────────────────────┘

---

Стандарты (Conforming to)

Not in POSIX.1.  Present on Solaris, NetBSD, and perhaps other
       systems.

---

Примечание (Note)

For consistency with the other "utmpx" functions (see
       getutxent(3)), glibc provides (since version 2.1):

           #include <utmpx.h>
           void updwtmpx (const char *wtmpx_file, const struct utmpx *utx);

       This function performs the same task as updwtmp(), but differs in
       that it takes a utmpx structure as its last argument.

---

Смотри также (See also)

getutxent(3), wtmp(5)

---