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01: /* Copyright (C) 1993, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. 02: This file is part of the GNU C Library. 03: 04: The GNU C Library is free software; you can redistribute it and/or 05: modify it under the terms of the GNU Lesser General Public 06: License as published by the Free Software Foundation; either 07: version 2.1 of the License, or (at your option) any later version. 08: 09: 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, write to the Free 16: Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17: 02111-1307 USA. */ 18: 19: #ifndef _UTMP_H 20: #define _UTMP_H 1 21: 22: #include <features.h> 23: 24: #include <sys/types.h> 25: 26: 27: __BEGIN_DECLS 28: 29: /* Get system dependent values and data structures. */ 30: #include <bits/utmp.h> 31: 32: /* Compatibility names for the strings of the canonical file names. */ 33: #define UTMP_FILE _PATH_UTMP 34: #define UTMP_FILENAME _PATH_UTMP 35: #define WTMP_FILE _PATH_WTMP 36: #define WTMP_FILENAME _PATH_WTMP 37: 38: 39: 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: 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: 55: /* Append entry UTMP to the wtmp-like file WTMP_FILE. */ 56: extern void updwtmp (__const char *__wtmp_file, __const struct utmp *__utmp) 57: __THROW; 58: 59: /* Change name of the utmp file to be examined. */ 60: extern int utmpname (__const char *__file) __THROW; 61: 62: /* Read next entry from a utmp-like file. */ 63: extern struct utmp *getutent (void) __THROW; 64: 65: /* Reset the input stream to the beginning of the file. */ 66: extern void setutent (void) __THROW; 67: 68: /* Close the current open file. */ 69: extern void endutent (void) __THROW; 70: 71: /* Search forward from the current point in the utmp file until the 72: next entry with a ut_type matching ID->ut_type. */ 73: extern struct utmp *getutid (__const struct utmp *__id) __THROW; 74: 75: /* Search forward from the current point in the utmp file until the 76: next entry with a ut_line matching LINE->ut_line. */ 77: extern struct utmp *getutline (__const struct utmp *__line) __THROW; 78: 79: /* Write out entry pointed to by UTMP_PTR into the utmp file. */ 80: extern struct utmp *pututline (__const struct utmp *__utmp_ptr) __THROW; 81: 82: 83: #ifdef __USE_MISC 84: /* Reentrant versions of the file for handling utmp files. */ 85: extern int getutent_r (struct utmp *__buffer, struct utmp **__result) __THROW; 86: 87: extern int getutid_r (__const struct utmp *__id, struct utmp *__buffer, 88: struct utmp **__result) __THROW; 89: 90: extern int getutline_r (__const struct utmp *__line, 91: struct utmp *__buffer, struct utmp **__result) __THROW; 92: 93: #endif /* Use misc. */ 94: 95: __END_DECLS 96: 97: #endif /* utmp.h */ 98: