diff options
| -rw-r--r-- | coreutils/who.c | 85 | ||||
| -rw-r--r-- | include/applets.h | 3 | ||||
| -rw-r--r-- | include/usage.h | 12 |
3 files changed, 98 insertions, 2 deletions
diff --git a/coreutils/who.c b/coreutils/who.c new file mode 100644 index 0000000..3da7ed1 --- /dev/null +++ b/coreutils/who.c @@ -0,0 +1,85 @@ +/* vi: set sw=4 ts=4: */ +/*---------------------------------------------------------------------- + * Mini who is used to display user name, login time, + * idle time and host name. + * + * Author: Da Chen <dchen@ayrnetworks.com> + * + * This is a free document; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation: + * http://www.gnu.org/copyleft/gpl.html + * + * Copyright (c) 2002 AYR Networks, Inc. + *---------------------------------------------------------------------- + */ + +#include <sys/types.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <utmp.h> +#include <sys/stat.h> +#include <errno.h> +#include <string.h> +#include <time.h> +#include <busybox.h> + +extern int who_main(int argc, char **argv) +{ + struct utmp *ut; + struct stat st; + int devlen, len; + time_t now, idle; + + if (argc > 1) + show_usage(); + + setutent(); + devlen = sizeof("/dev/") - 1; + printf("USER TTY IDLE FROM HOST\n"); + + while ((ut = getutent()) != NULL) { + char name[40]; + + if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) { + len = strlen(ut->ut_line); + if (ut->ut_line[0] == '/') { + strncpy(name, ut->ut_line, len); + name[len] = '\0'; + strcpy(ut->ut_line, ut->ut_line + devlen); + } else { + strcpy(name, "/dev/"); + strncpy(name+devlen, ut->ut_line, len); + name[devlen+len] = '\0'; + } + + printf("%-10s %-8s ", ut->ut_user, ut->ut_line); + + if (stat(name, &st) == 0) { + now = time(NULL); + idle = now - st.st_atime; + + if (idle < 60) + printf("00:00m "); + else if (idle < (60 * 60)) + printf("00:%02dm ", (int)(idle / 60)); + else if (idle < (24 * 60 * 60)) + printf("%02d:%02dm ", (int)(idle / (60 * 60)), + (int)(idle % (60 * 60)) / 60); + else if (idle < (24 * 60 * 60 * 365)) + printf("%03ddays ", (int)(idle / (24 * 60 * 60))); + else + printf("%02dyears ", (int) (idle / (24 * 60 * 60 * 365))); + } else + printf("%-8s ", "?"); + + printf("%-12.12s %s\n", ctime(&(ut->ut_tv.tv_sec)) + 4, ut->ut_host); + } + } + endutent(); + + return 0; +} + + diff --git a/include/applets.h b/include/applets.h index 6760fc5..aaac6a9 100644 --- a/include/applets.h +++ b/include/applets.h @@ -506,6 +506,9 @@ #ifdef CONFIG_WHICH APPLET(which, which_main, _BB_DIR_USR_BIN) #endif +#ifdef CONFIG_WHO + APPLET(who, who_main, _BB_DIR_USR_BIN) +#endif #ifdef CONFIG_WHOAMI APPLET(whoami, whoami_main, _BB_DIR_USR_BIN) #endif diff --git a/include/usage.h b/include/usage.h index bd5e913..d690d90 100644 --- a/include/usage.h +++ b/include/usage.h @@ -1261,9 +1261,13 @@ "$ mv /tmp/foo /bin/bar\n" #define nc_trivial_usage \ - "[IP] [port]" + "[OPTIONS] [IP] [port]" #define nc_full_usage \ - "Netcat opens a pipe to IP:port" + "Netcat opens a pipe to IP:port\n\n" \ + "Options:\n" \ + "\t-l\t\tlisten mode, for inbound connects\n" \ + "\t-p PORT\t\tlocal port number\n" \ + "\t-e PROG\t\tprogram to exec after connect (dangerous!)" #define nc_example_usage \ "$ nc foobar.somedomain.com 25\n" \ "220 foobar ESMTP Exim 3.12 #1 Sat, 15 Apr 2000 00:03:02 -0600\n" \ @@ -1967,6 +1971,10 @@ #define which_example_usage \ "$ which login\n" \ "/bin/login\n" +#define who_trivial_usage \ + " " +#define who_full_usage \ + "Prints the current user names and related information" #define whoami_trivial_usage \ "" |