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initctl: Raw UTMP dump tool

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2016-08-06 18:49:22 +02:00
parent f0318b0df0
commit 2067fd597f
1 changed files with 45 additions and 1 deletions
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initctl.c
+45 -1
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@@ -1,6 +1,6 @@
/* New client tool, complements old /dev/initctl API and telinit tool
*
* Copyright (c) 2015 Joachim Nilsson <troglobit@gmail.com>
* Copyright (c) 2015-2016 Joachim Nilsson <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -28,6 +28,8 @@
#include <stdio.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <time.h>
#include <utmp.h>
#include <lite/lite.h>
#include "config.h"
@@ -280,6 +282,46 @@ static int do_halt (char *UNUSED(arg)) { return kill(1, SIGUSR1); }
static int do_poweroff(char *UNUSED(arg)) { return kill(1, SIGUSR2); }
static int do_reboot (char *UNUSED(arg)) { return kill(1, SIGTERM); }
static int do_utmp_show(char *file)
{
time_t sec;
struct utmp *ut;
struct tm *sectm;
int pid;
char id[sizeof(ut->ut_id)], user[sizeof(ut->ut_user)], when[80];
printf("%s =============================================================================================\n", file);
utmpname(file);
setutent();
while ((ut = getutent())) {
memset(id, 0, sizeof(id));
strncpy(id, ut->ut_id, sizeof(ut->ut_id));
memset(user, 0, sizeof(user));
strncpy(user, ut->ut_user, sizeof(ut->ut_user));
sec = ut->ut_tv.tv_sec;
sectm = localtime(&sec);
strftime(when, sizeof(when), "%F %T", sectm);
pid = ut->ut_pid;
printf("[%d] [%05d] [%-4.4s] [%-8.8s] [%-12.12s] [%-20.20s] [%-15.15s] [%-19.19s]\n",
ut->ut_type, pid, id, user, ut->ut_line, ut->ut_host, "0.0.0.0", when);
}
endutent();
return 0;
}
static int do_utmp(char *UNUSED(cmd))
{
return do_utmp_show(_PATH_UTMP) ||
do_utmp_show(_PATH_WTMP);
}
static int show_version(char *UNUSED(arg))
{
puts("v" PACKAGE_VERSION);
@@ -420,6 +462,7 @@ static int usage(int rc)
" reboot Reboot system\n"
" halt Halt system\n"
" poweroff Halt and power off system\n"
" utmp show Raw dump of UTMP/WTMP db\n"
" version Show Finit version\n\n", __progname);
return rc;
@@ -441,6 +484,7 @@ int main(int argc, char *argv[])
{ "reboot", do_reboot },
{ "halt", do_halt },
{ "poweroff", do_poweroff },
{ "halt", do_utmp },
{ "version", show_version },
{ NULL, NULL }
};