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76b87c03 | 1 | /* utmpdump - dump utmp-like files. |
b168057a | 2 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
81e9dad6 | 3 | This file is part of the GNU C Library. |
76b87c03 | 4 | Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. |
81e9dad6 UD |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
81e9dad6 UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
81e9dad6 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
81e9dad6 | 19 | |
76b87c03 UD |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
22 | #include <time.h> | |
23 | #include <unistd.h> | |
24 | #include <utmp.h> | |
81e9dad6 | 25 | |
d54fb3b6 | 26 | static void |
76b87c03 UD |
27 | print_entry (struct utmp *up) |
28 | { | |
4c98451b | 29 | /* Mixed 32-/64-bit systems may have timeval structs of different sixe |
a49daee2 | 30 | but need struct utmp to be the same size. So in 64-bit up->ut_tv may |
4c98451b UD |
31 | not be a timeval but a struct of __int32_t's. This would cause a compile |
32 | time warning and a formating error when 32-bit int is passed where | |
33 | a 64-bit long is expected. So copy up->up_tv to a temporary timeval. | |
a49daee2 | 34 | This is 32-/64-bit agnostic and expands the timeval fields to the |
4c98451b UD |
35 | expected size as needed. */ |
36 | struct timeval temp_tv; | |
37 | temp_tv.tv_sec = up->ut_tv.tv_sec; | |
38 | temp_tv.tv_usec = up->ut_tv.tv_usec; | |
a49daee2 | 39 | |
ffa8d2a0 RM |
40 | (printf) ( |
41 | /* The format string. */ | |
42 | #if _HAVE_UT_TYPE | |
43 | "[%d] " | |
44 | #endif | |
45 | #if _HAVE_UT_PID | |
46 | "[%05d] " | |
47 | #endif | |
48 | #if _HAVE_UT_ID | |
49 | "[%-4.4s] " | |
50 | #endif | |
51 | "[%-8.8s] [%-12.12s]" | |
52 | #if _HAVE_UT_HOST | |
53 | " [%-16.16s]" | |
54 | #endif | |
55 | " [%-15.15s]" | |
56 | #if _HAVE_UT_TV | |
57 | " [%ld]" | |
58 | #endif | |
59 | "\n" | |
60 | /* The arguments. */ | |
61 | #if _HAVE_UT_TYPE | |
62 | , up->ut_type | |
63 | #endif | |
64 | #if _HAVE_UT_PID | |
65 | , up->ut_pid | |
66 | #endif | |
67 | #if _HAVE_UT_ID | |
68 | , up->ut_id | |
69 | #endif | |
70 | , up->ut_user, up->ut_line | |
71 | #if _HAVE_UT_HOST | |
72 | , up->ut_host | |
73 | #endif | |
74 | #if _HAVE_UT_TV | |
4c98451b | 75 | , 4 + ctime (&temp_tv.tv_sec) |
a49daee2 | 76 | , (long int) temp_tv.tv_usec |
0413b54c | 77 | #else |
ffa8d2a0 | 78 | , 4 + ctime (&up->ut_time) |
0413b54c | 79 | #endif |
ffa8d2a0 | 80 | ); |
76b87c03 | 81 | } |
81e9dad6 | 82 | |
76b87c03 UD |
83 | int |
84 | main (int argc, char *argv[]) | |
85 | { | |
86 | struct utmp *up; | |
87 | ||
88 | if (argc > 1) | |
89 | utmpname (argv[1]); | |
0413b54c | 90 | |
76b87c03 UD |
91 | setutent (); |
92 | ||
93 | while ((up = getutent ())) | |
94 | print_entry (up); | |
95 | ||
96 | endutent (); | |
0413b54c | 97 | |
76b87c03 UD |
98 | return EXIT_SUCCESS; |
99 | } |