Contents of /trunk/mkinitrd-magellan/busybox/coreutils/who.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 2406 byte(s)
-updated to busybox-1.17.1
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, -l, -m, -p, -q, -r, -s, -t, -T, -u; Missing argument 'file'. */ |
20 | |
21 | #include "libbb.h" |
22 | #include <utmp.h> |
23 | |
24 | static void idle_string(char *str6, time_t t) |
25 | { |
26 | t = time(NULL) - t; |
27 | |
28 | /*if (t < 60) { |
29 | str6[0] = '.'; |
30 | str6[1] = '\0'; |
31 | return; |
32 | }*/ |
33 | if (t >= 0 && t < (24 * 60 * 60)) { |
34 | sprintf(str6, "%02d:%02d", |
35 | (int) (t / (60 * 60)), |
36 | (int) ((t % (60 * 60)) / 60)); |
37 | return; |
38 | } |
39 | strcpy(str6, "old"); |
40 | } |
41 | |
42 | int who_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
43 | int who_main(int argc UNUSED_PARAM, char **argv) |
44 | { |
45 | struct utmp *ut; |
46 | unsigned opt; |
47 | |
48 | opt_complementary = "=0"; |
49 | opt = getopt32(argv, "aH"); |
50 | if (opt & 2) // -H |
51 | printf("USER\t\tTTY\t\tIDLE\tTIME\t\t HOST\n"); |
52 | |
53 | setutent(); |
54 | while ((ut = getutent()) != NULL) { |
55 | if (ut->ut_user[0] |
56 | && ((opt & 1) || ut->ut_type == USER_PROCESS) |
57 | ) { |
58 | char str6[6]; |
59 | char name[sizeof("/dev/") + sizeof(ut->ut_line) + 1]; |
60 | struct stat st; |
61 | time_t seconds; |
62 | |
63 | str6[0] = '?'; |
64 | str6[1] = '\0'; |
65 | strcpy(name, "/dev/"); |
66 | safe_strncpy(ut->ut_line[0] == '/' ? name : name + sizeof("/dev/")-1, |
67 | ut->ut_line, |
68 | sizeof(ut->ut_line)+1 |
69 | ); |
70 | if (stat(name, &st) == 0) |
71 | idle_string(str6, st.st_atime); |
72 | /* manpages say ut_tv.tv_sec *is* time_t, |
73 | * but some systems have it wrong */ |
74 | seconds = ut->ut_tv.tv_sec; |
75 | /* How wide time field can be? |
76 | * "Nov 10 19:33:20": 15 chars |
77 | * "2010-11-10 19:33": 16 chars |
78 | */ |
79 | printf("%-15.*s %-15.*s %-7s %-16.16s %.*s\n", |
80 | (int)sizeof(ut->ut_user), ut->ut_user, |
81 | (int)sizeof(ut->ut_line), ut->ut_line, |
82 | str6, |
83 | ctime(&seconds) + 4, |
84 | (int)sizeof(ut->ut_host), ut->ut_host |
85 | ); |
86 | } |
87 | } |
88 | if (ENABLE_FEATURE_CLEAN_UP) |
89 | endutent(); |
90 | return EXIT_SUCCESS; |
91 | } |