include/utmp.h

   1 /* Copyright (C) 1993, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _UTMP_H
  19 #define _UTMP_H 1
  20
  21 #include <features.h>
  22
  23 #include <sys/types.h>
  24
  25
  26 __BEGIN_DECLS
  27
  28 /* Get system dependent values and data structures.  */
  29 #include <bits/utmp.h>
  30
  31 /* Compatibility names for the strings of the canonical file names.  */
  32 #define UTMP_FILE       _PATH_UTMP
  33 #define UTMP_FILENAME   _PATH_UTMP
  34 #define WTMP_FILE       _PATH_WTMP
  35 #define WTMP_FILENAME   _PATH_WTMP
  36
  37
  38
  39 #ifdef __UCLIBC_HAS_LIBUTIL__
  40 /* Make FD be the controlling terminal, stdin, stdout, and stderr;
  41    then close FD.  Returns 0 on success, nonzero on error.  */
  42 extern int login_tty (int __fd) __THROW;
  43 libutil_hidden_proto(login_tty)
  44
  45 /* Write the given entry into utmp and wtmp.  */
  46 extern void login (const struct utmp *__entry) __THROW;
  47
  48 /* Write the utmp entry to say the user on UT_LINE has logged out.  */
  49 extern int logout (const char *__ut_line) __THROW;
  50
  51 /* Append to wtmp an entry for the current time and the given info.  */
  52 extern void logwtmp (const char *__ut_line, const char *__ut_name,
  53                      const char *__ut_host) __THROW;
  54 #endif
  55
  56 /* Append entry UTMP to the wtmp-like file WTMP_FILE.  */
  57 extern void updwtmp (const char *__wtmp_file, const struct utmp *__utmp)
  58      __THROW;
  59
  60 /* Change name of the utmp file to be examined.  */
  61 extern int utmpname (const char *__file) __THROW;
  62
  63 /* Read next entry from a utmp-like file.  */
  64 extern struct utmp *getutent (void) __THROW;
  65
  66 /* Reset the input stream to the beginning of the file.  */
  67 extern void setutent (void) __THROW;
  68
  69 /* Close the current open file.  */
  70 extern void endutent (void) __THROW;
  71
  72 /* Search forward from the current point in the utmp file until the
  73    next entry with a ut_type matching ID->ut_type.  */
  74 extern struct utmp *getutid (const struct utmp *__id) __THROW;
  75
  76 /* Search forward from the current point in the utmp file until the
  77    next entry with a ut_line matching LINE->ut_line.  */
  78 extern struct utmp *getutline (const struct utmp *__line) __THROW;
  79
  80 /* Write out entry pointed to by UTMP_PTR into the utmp file.  */
  81 extern struct utmp *pututline (const struct utmp *__utmp_ptr) __THROW;
  82
  83
  84 #if 0 /* def    __USE_MISC */
  85 /* Reentrant versions of the file for handling utmp files.  */
  86 extern int getutent_r (struct utmp *__buffer, struct utmp **__result) __THROW;
  87
  88 extern int getutid_r (const struct utmp *__id, struct utmp *__buffer,
  89                       struct utmp **__result) __THROW;
  90
  91 extern int getutline_r (const struct utmp *__line,
  92                         struct utmp *__buffer, struct utmp **__result) __THROW;
  93
  94 #endif  /* Use misc.  */
  95
  96 __END_DECLS
  97
  98 #endif /* utmp.h  */