utmp.h 2.9 KB

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  1. /* Copyright (C) 1993, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #ifndef _UTMP_H
  16. #define _UTMP_H 1
  17. #include <features.h>
  18. #include <sys/types.h>
  19. __BEGIN_DECLS
  20. /* Get system dependent values and data structures. */
  21. #include <bits/utmp.h>
  22. /* Compatibility names for the strings of the canonical file names. */
  23. #define UTMP_FILE _PATH_UTMP
  24. #define UTMP_FILENAME _PATH_UTMP
  25. #define WTMP_FILE _PATH_WTMP
  26. #define WTMP_FILENAME _PATH_WTMP
  27. /* Make FD be the controlling terminal, stdin, stdout, and stderr;
  28. then close FD. Returns 0 on success, nonzero on error. */
  29. extern int login_tty (int __fd) __THROW;
  30. /* Write the given entry into utmp and wtmp. */
  31. extern void login (__const struct utmp *__entry) __THROW;
  32. /* Write the utmp entry to say the user on UT_LINE has logged out. */
  33. extern int logout (__const char *__ut_line) __THROW;
  34. /* Append to wtmp an entry for the current time and the given info. */
  35. extern void logwtmp (__const char *__ut_line, __const char *__ut_name,
  36. __const char *__ut_host) __THROW;
  37. /* Append entry UTMP to the wtmp-like file WTMP_FILE. */
  38. extern void updwtmp (__const char *__wtmp_file, __const struct utmp *__utmp)
  39. __THROW;
  40. /* Change name of the utmp file to be examined. */
  41. extern int utmpname (__const char *__file) __THROW;
  42. /* Read next entry from a utmp-like file. */
  43. extern struct utmp *getutent (void) __THROW;
  44. /* Reset the input stream to the beginning of the file. */
  45. extern void setutent (void) __THROW;
  46. /* Close the current open file. */
  47. extern void endutent (void) __THROW;
  48. /* Search forward from the current point in the utmp file until the
  49. next entry with a ut_type matching ID->ut_type. */
  50. extern struct utmp *getutid (__const struct utmp *__id) __THROW;
  51. /* Search forward from the current point in the utmp file until the
  52. next entry with a ut_line matching LINE->ut_line. */
  53. extern struct utmp *getutline (__const struct utmp *__line) __THROW;
  54. /* Write out entry pointed to by UTMP_PTR into the utmp file. */
  55. extern struct utmp *pututline (__const struct utmp *__utmp_ptr) __THROW;
  56. __END_DECLS
  57. #endif /* utmp.h */