diff options
| author | Eric Andersen <andersen@codepoet.org> | 2002-04-26 23:53:10 +0000 |
|---|---|---|
| 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 | |||