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author | Eric Andersen <andersen@codepoet.org> | 2002-04-26 23:53:10 +0000 |
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committer | Eric Andersen <andersen@codepoet.org> | 2002-04-26 23:53:10 +0000 |
commit | 00a6a750357d49d3e9cedf3edee7ae2aceae6748 (patch) | |
tree | 08c2ae0164e3fe70bb7f922b5c10f51449bd280b /coreutils/who.c | |
parent | 1c31501b1bacd5d3a2a156dfd6833fe174fff9d1 (diff) | |
download | busybox-w32-00a6a750357d49d3e9cedf3edee7ae2aceae6748.tar.gz busybox-w32-00a6a750357d49d3e9cedf3edee7ae2aceae6748.tar.bz2 busybox-w32-00a6a750357d49d3e9cedf3edee7ae2aceae6748.zip |
Add the who applet, supplied by Da Chen <dchen@ayrnetworks.com>
Diffstat (limited to 'coreutils/who.c')
-rw-r--r-- | coreutils/who.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/coreutils/who.c b/coreutils/who.c new file mode 100644 index 000000000..3da7ed1c7 --- /dev/null +++ b/coreutils/who.c | |||
@@ -0,0 +1,85 @@ | |||
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 | */ | ||
16 | |||
17 | #include <sys/types.h> | ||
18 | #include <fcntl.h> | ||
19 | #include <unistd.h> | ||
20 | #include <stdlib.h> | ||
21 | #include <utmp.h> | ||
22 | #include <sys/stat.h> | ||
23 | #include <errno.h> | ||
24 | #include <string.h> | ||
25 | #include <time.h> | ||
26 | #include <busybox.h> | ||
27 | |||
28 | extern int who_main(int argc, char **argv) | ||
29 | { | ||
30 | struct utmp *ut; | ||
31 | struct stat st; | ||
32 | int devlen, len; | ||
33 | time_t now, idle; | ||
34 | |||
35 | if (argc > 1) | ||
36 | show_usage(); | ||
37 | |||
38 | setutent(); | ||
39 | devlen = sizeof("/dev/") - 1; | ||
40 | printf("USER TTY IDLE FROM HOST\n"); | ||
41 | |||
42 | while ((ut = getutent()) != NULL) { | ||
43 | char name[40]; | ||
44 | |||
45 | if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) { | ||
46 | len = strlen(ut->ut_line); | ||
47 | if (ut->ut_line[0] == '/') { | ||
48 | strncpy(name, ut->ut_line, len); | ||
49 | name[len] = '\0'; | ||
50 | strcpy(ut->ut_line, ut->ut_line + devlen); | ||
51 | } else { | ||
52 | strcpy(name, "/dev/"); | ||
53 | strncpy(name+devlen, ut->ut_line, len); | ||
54 | name[devlen+len] = '\0'; | ||
55 | } | ||
56 | |||
57 | printf("%-10s %-8s ", ut->ut_user, ut->ut_line); | ||
58 | |||
59 | if (stat(name, &st) == 0) { | ||
60 | now = time(NULL); | ||
61 | idle = now - st.st_atime; | ||
62 | |||
63 | if (idle < 60) | ||
64 | printf("00:00m "); | ||
65 | else if (idle < (60 * 60)) | ||
66 | printf("00:%02dm ", (int)(idle / 60)); | ||
67 | else if (idle < (24 * 60 * 60)) | ||
68 | printf("%02d:%02dm ", (int)(idle / (60 * 60)), | ||
69 | (int)(idle % (60 * 60)) / 60); | ||
70 | else if (idle < (24 * 60 * 60 * 365)) | ||
71 | printf("%03ddays ", (int)(idle / (24 * 60 * 60))); | ||
72 | else | ||
73 | printf("%02dyears ", (int) (idle / (24 * 60 * 60 * 365))); | ||
74 | } else | ||
75 | printf("%-8s ", "?"); | ||
76 | |||
77 | printf("%-12.12s %s\n", ctime(&(ut->ut_tv.tv_sec)) + 4, ut->ut_host); | ||
78 | } | ||
79 | } | ||
80 | endutent(); | ||
81 | |||
82 | return 0; | ||
83 | } | ||
84 | |||
85 | |||