projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b8fe19fa RM |
1 | /* Copyright (C) 1996 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Library General Public License as | |
| 7 | published by the Free Software Foundation; either version 2 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Library General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Library General Public | |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If | |
| 17 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 18 | Boston, MA 02111-1307, USA. */ | |
| 19 | ||
| 20 | #include <errno.h> | |
| 0200214b | 21 | #include <string.h> |
| b8fe19fa RM |
22 | #include <unistd.h> |
| 23 | #include <utmp.h> | |
| 24 | ||
| 25 | ||
| 26 | /* For implementing this function we don't use the getutent_r function | |
| 27 | because we can avoid the reposition on every new entry this way. */ | |
| 28 | int | |
| 23396375 UD |
29 | __getutline_r (const struct utmp *line, struct utmp **utmp, |
| 30 | struct utmp_data *utmp_data) | |
| b8fe19fa RM |
31 | { |
| 32 | /* Open utmp file if not already done. */ | |
| 33 | if (utmp_data->ut_fd == -1) | |
| 34 | { | |
| 23396375 | 35 | __setutent_r (utmp_data); |
| b8fe19fa RM |
36 | if (utmp_data->ut_fd == -1) |
| 37 | return -1; | |
| 38 | } | |
| 39 | ||
| 40 | /* Position file correctly. */ | |
| 41 | if (lseek (utmp_data->ut_fd, utmp_data->loc_utmp, SEEK_SET) == -1) | |
| 42 | return -1; | |
| 43 | ||
| 0200214b | 44 | while (1) |
| b8fe19fa RM |
45 | { |
| 46 | /* Read the next entry. */ | |
| 47 | if (read (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp)) | |
| 48 | != sizeof (struct utmp)) | |
| 49 | { | |
| eb6c8480 | 50 | utmp_data->loc_utmp = 0; /* Mark UTMP_DATA->ubuf invalid. */ |
| c4029823 | 51 | __set_errno (ESRCH); |
| b8fe19fa RM |
52 | return -1; |
| 53 | } | |
| 54 | ||
| 55 | /* Update position pointer. */ | |
| 56 | utmp_data->loc_utmp += sizeof (struct utmp); | |
| 0200214b | 57 | |
| 49b98627 | 58 | if ( |
| 0200214b | 59 | #if _HAVE_UT_TYPE - 0 |
| 49b98627 RM |
60 | (utmp_data->ubuf.ut_type == USER_PROCESS |
| 61 | || utmp_data->ubuf.ut_type == LOGIN_PROCESS) | |
| 62 | && | |
| 0200214b | 63 | #endif |
| 49b98627 RM |
64 | ! strncmp (line->ut_line, utmp_data->ubuf.ut_line, |
| 65 | sizeof line->ut_line)) | |
| 66 | /* Stop if we found a user or login entry. */ | |
| 67 | break; | |
| b8fe19fa | 68 | } |
| b8fe19fa RM |
69 | |
| 70 | *utmp = &utmp_data->ubuf; | |
| 71 | ||
| 72 | return 0; | |
| 73 | } | |
| 23396375 | 74 | weak_alias (__getutline_r, getutline_r) |