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utmp.h
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: 


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Andrew Scott
http://www.andrew-scott.co.uk/