Contents of /tags/mkinitrd-6_1_12/busybox/coreutils/who.c
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Tue Nov 17 21:24:51 2009 UTC (14 years, 10 months ago) by niro
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File size: 2183 byte(s)
Tue Nov 17 21:24:51 2009 UTC (14 years, 10 months ago) by niro
File MIME type: text/plain
File size: 2183 byte(s)
tagged 'mkinitrd-6_1_12'
1 | /* vi: set sw=4 ts=4: */ |
2 | /*---------------------------------------------------------------------- |
3 | * Mini who is used to display user name, login time, |
4 | * idle time and host name. |
5 | * |
6 | * Author: Da Chen <dchen@ayrnetworks.com> |
7 | * |
8 | * This is a free document; you can redistribute it and/or |
9 | * modify it under the terms of the GNU General Public License |
10 | * as published by the Free Software Foundation: |
11 | * http://www.gnu.org/copyleft/gpl.html |
12 | * |
13 | * Copyright (c) 2002 AYR Networks, Inc. |
14 | * |
15 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
16 | * |
17 | *---------------------------------------------------------------------- |
18 | */ |
19 | /* BB_AUDIT SUSv3 _NOT_ compliant -- missing options -b, -d, -H, -l, -m, -p, -q, -r, -s, -t, -T, -u; Missing argument 'file'. */ |
20 | |
21 | #include "libbb.h" |
22 | #include <utmp.h> |
23 | #include <time.h> |
24 | |
25 | static void idle_string(char *str6, time_t t) |
26 | { |
27 | t = time(NULL) - t; |
28 | |
29 | /*if (t < 60) { |
30 | str6[0] = '.'; |
31 | str6[1] = '\0'; |
32 | return; |
33 | }*/ |
34 | if (t >= 0 && t < (24 * 60 * 60)) { |
35 | sprintf(str6, "%02d:%02d", |
36 | (int) (t / (60 * 60)), |
37 | (int) ((t % (60 * 60)) / 60)); |
38 | return; |
39 | } |
40 | strcpy(str6, "old"); |
41 | } |
42 | |
43 | int who_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
44 | int who_main(int argc UNUSED_PARAM, char **argv) |
45 | { |
46 | char str6[6]; |
47 | struct utmp *ut; |
48 | struct stat st; |
49 | char *name; |
50 | unsigned opt; |
51 | |
52 | opt_complementary = "=0"; |
53 | opt = getopt32(argv, "a"); |
54 | |
55 | setutent(); |
56 | printf("USER TTY IDLE TIME HOST\n"); |
57 | while ((ut = getutent()) != NULL) { |
58 | if (ut->ut_user[0] && (opt || ut->ut_type == USER_PROCESS)) { |
59 | time_t tmp; |
60 | /* ut->ut_line is device name of tty - "/dev/" */ |
61 | name = concat_path_file("/dev", ut->ut_line); |
62 | str6[0] = '?'; |
63 | str6[1] = '\0'; |
64 | if (stat(name, &st) == 0) |
65 | idle_string(str6, st.st_atime); |
66 | /* manpages say ut_tv.tv_sec *is* time_t, |
67 | * but some systems have it wrong */ |
68 | tmp = ut->ut_tv.tv_sec; |
69 | /* 15 chars for time: Nov 10 19:33:20 */ |
70 | printf("%-10s %-8s %-9s %-15.15s %s\n", |
71 | ut->ut_user, ut->ut_line, str6, |
72 | ctime(&tmp) + 4, ut->ut_host); |
73 | if (ENABLE_FEATURE_CLEAN_UP) |
74 | free(name); |
75 | } |
76 | } |
77 | if (ENABLE_FEATURE_CLEAN_UP) |
78 | endutent(); |
79 | return EXIT_SUCCESS; |
80 | } |