/*
 * Home page of code is: http://smartmontools.sourceforge.net
 *
 * Copyright (C) 2002-4 Bruce Allen <smartmontools-support@lists.sourceforge.net>
 * Copyright (C) 2000 Michael Cornwell <cornwell@acm.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * You should have received a copy of the GNU General Public License
 * (for example COPYING); if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * This code was originally developed as a Senior Thesis by Michael Cornwell
 * at the Concurrent Systems Laboratory (now part of the Storage Systems
 * Research Center), Jack Baskin School of Engineering, University of
 * California, Santa Cruz. http://ssrc.soe.ucsc.edu/
 *
 */

// unconditionally included files
#define _GNU_SOURCE
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>   // umask
#ifndef _WIN32
#include <sys/wait.h>
#include <unistd.h>
#endif
#include <signal.h>
#include <fcntl.h>
#include <string.h>
#include <syslog.h>
#include <stdarg.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <limits.h>

#if SCSITIMEOUT
#include <setjmp.h>
#endif

// see which system files to conditionally include
#include "config.h"

// conditionally included files
#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif

#ifdef _WIN32
#ifdef _MSC_VER
#pragma warning(disable:4761) // "conversion supplied"
typedef unsigned short mode_t;
typedef int pid_t;
#endif
#include <io.h> // umask()
#include <process.h> // getpid()
#endif // _WIN32

// locally included files
#include "atacmds.h"
#include "ataprint.h"
#include "extern.h"
#include "int64.h"
#include "knowndrives.h"
#include "scsicmds.h"
#include "smartd.h"
#include "utility.h"

#ifdef _WIN32
// fork()/signal()/initd simulation for native Windows
#include "daemon_win32.h" // daemon_main/detach/signal()
#undef SIGNALFN
#define SIGNALFN  daemon_signal
#define strsignal daemon_strsignal
#define sleep     daemon_sleep
// SIGQUIT does not exits, CONTROL-Break signals SIGBREAK.
#define SIGQUIT SIGBREAK
#define SIGQUIT_KEYNAME "CONTROL-Break"
#else  // _WIN32
#ifdef __CYGWIN__
// 2x CONTROL-C simulates missing SIGQUIT via keyboard
#define SIGQUIT_KEYNAME "2x CONTROL-C"
#else // __CYGWIN__
#define SIGQUIT_KEYNAME "CONTROL-\\"
#endif // __CYGWIN__
#endif // _WIN32

#if defined (__SVR4) && defined (__sun)
int getdomainname(char *, int); /* no declaration in header files! */
#endif

#define ARGUSED(x) ((void)(x))

// These are CVS identification information for *.c and *.h files
extern const char *atacmdnames_c_cvsid, *atacmds_c_cvsid, *ataprint_c_cvsid, *escalade_c_cvsid, 
                  *knowndrives_c_cvsid, *os_XXXX_c_cvsid, *scsicmds_c_cvsid, *utility_c_cvsid;

static const char *filenameandversion="$Id: smartd.c,v 1.318 2004/04/18 15:02:52 chrfranke Exp $";
#ifdef NEED_SOLARIS_ATA_CODE
extern const char *os_solaris_ata_s_cvsid;
#endif
#ifdef _WIN32
extern const char *daemon_win32_c_cvsid;
extern const char *syslog_win32_c_cvsid;
#ifdef _MSC_VER
extern const char *int64_vc6_c_cvsid;
#endif
#endif
const char *smartd_c_cvsid="$Id: smartd.c,v 1.318 2004/04/18 15:02:52 chrfranke Exp $" 
ATACMDS_H_CVSID ATAPRINT_H_CVSID CONFIG_H_CVSID EXTERN_H_CVSID INT64_H_CVSID
KNOWNDRIVES_H_CVSID SCSICMDS_H_CVSID SMARTD_H_CVSID
#ifdef SYSLOG_H_CVSID
SYSLOG_H_CVSID
#endif
UTILITY_H_CVSID;

extern const char *reportbug;

// GNU copyleft statement.  Needed for GPL purposes.
const char *copyleftstring="smartd comes with ABSOLUTELY NO WARRANTY. This is\n"
                           "free software, and you are welcome to redistribute it\n"
                           "under the terms of the GNU General Public License\n"
                           "Version 2. See http://www.gnu.org for further details.\n\n";

extern unsigned char debugmode;

// command-line: how long to sleep between checks
static int checktime=CHECKTIME;

// command-line: name of PID file (NULL for no pid file)
static char* pid_file=NULL;

// configuration file name
#ifndef _WIN32
static char* configfile = SMARTMONTOOLS_SYSCONFDIR "/" CONFIGFILENAME ;
#else
static char* configfile = "./" CONFIGFILENAME ;
#endif
// configuration file "name" if read from stdin
static /*const*/ char * const configfile_stdin = "<stdin>";
// allocated memory for alternate configuration file name
static char* configfile_alt = NULL;

// command-line: when should we exit?
static int quit=0;

// command-line; this is the default syslog(3) log facility to use.
static int facility=LOG_DAEMON;

// used for control of printing, passing arguments to atacmds.c
smartmonctrl *con=NULL;

// pointers to (real or simulated) entries in configuration file, and
// maximum space currently allocated for these entries.
cfgfile **cfgentries=NULL;
int cfgentries_max=0;

// pointers to ATA and SCSI devices being monitored, maximum and
// actual numbers
cfgfile **atadevlist=NULL, **scsidevlist=NULL;
int atadevlist_max=0, scsidevlist_max=0;
int numdevata=0, numdevscsi=0;

// track memory usage
extern int64_t bytes;

// exit status
extern int exitstatus;

// set to one if we catch a USR1 (check devices now)
volatile int caughtsigUSR1=0;

#ifdef _WIN32
// set to one if we catch a USR2 (toggle debug mode)
volatile int caughtsigUSR2=0;
#endif

// set to one if we catch a HUP (reload config file). In debug mode,
// set to two, if we catch INT (also reload config file).
volatile int caughtsigHUP=0;

// set to signal value if we catch INT, QUIT, or TERM
volatile int caughtsigEXIT=0;

#if SCSITIMEOUT
// stack environment if we time out during SCSI access (USB devices)
jmp_buf registerscsienv;
#endif

// tranlate cfg->pending into the correct Attribute numbers
void TranslatePending(unsigned short pending, unsigned char *current, unsigned char *offline) {

  unsigned char curr = CURR_PEND(pending);
  unsigned char off =  OFF_PEND(pending);

  // look for special value of CUR_UNC_DEFAULT that means DONT
  // monitor. 0 means DO test.
  if (curr==CUR_UNC_DEFAULT)
    curr=0;
  else if (curr==0)
    curr=CUR_UNC_DEFAULT;
	
  // look for special value of OFF_UNC_DEFAULT that means DONT
  // monitor.  0 means DO TEST.
  if (off==OFF_UNC_DEFAULT)
    off=0;
  else if (off==0)
    off=OFF_UNC_DEFAULT;

  *current=curr;
  *offline=off;

  return;
}


// free all memory associated with selftest part of configfile entry.  Return NULL
testinfo* FreeTestData(testinfo *data){
  
  // make sure we have something to do.
  if (!data)
    return NULL;
  
  // free space for text pattern
  data->regex=FreeNonZero(data->regex, -1, __LINE__, filenameandversion);
  
  // free compiled expression
  regfree(&(data->cregex));

  // make sure that no sign of the compiled expression is left behind
  // (just in case, to help detect bugs if we ever try and refer to
  // that again).
  memset(&(data->cregex), '0', sizeof(regex_t));

  // free remaining memory space
  data=FreeNonZero(data, sizeof(testinfo), __LINE__, filenameandversion);

  return NULL;
}

cfgfile **AllocateMoreSpace(cfgfile **oldarray, int *oldsize, char *listname){
  // for now keep BLOCKSIZE small to help detect coding problems.
  // Perhaps increase in the future.
  const int BLOCKSIZE=8;
  int i;
  int old = *oldsize;
  int new = old + BLOCKSIZE;
  cfgfile **newptr=realloc(oldarray, new*sizeof(cfgfile *));
  
  // did we get more space?
  if (newptr) {

    // clear remaining entries ala calloc()
    for (i=old; i<new; i++)
      newptr[i]=NULL;
    
    bytes += BLOCKSIZE*sizeof(cfgfile *);
    
    *oldsize=new;
    
#if 0
    PrintOut(LOG_INFO, "allocating %d slots for %s\n", BLOCKSIZE, listname);
#endif

    return newptr;
  }
  
  PrintOut(LOG_CRIT, "out of memory for allocating %s list\n", listname);
  EXIT(EXIT_NOMEM);
}


// prints CVS identity information for the executable
void PrintCVS(void){
  char out[CVSMAXLEN];
  char *configargs=strlen(SMARTMONTOOLS_CONFIGURE_ARGS)?SMARTMONTOOLS_CONFIGURE_ARGS:"[no arguments given]";

  PrintOut(LOG_INFO,(char *)copyleftstring);
  PrintOut(LOG_INFO,"CVS version IDs of files used to build this code are:\n");
  printone(out,atacmdnames_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
  printone(out,atacmds_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
  printone(out,ataprint_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#ifdef _WIN32
  printone(out,daemon_win32_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#endif
#if defined(_WIN32) && defined(_MSC_VER)
  printone(out,int64_vc6_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#endif
  printone(out,knowndrives_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
  printone(out,os_XXXX_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#ifdef NEED_SOLARIS_ATA_CODE
  printone(out, os_solaris_ata_s_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#endif
  printone(out,scsicmds_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
  printone(out,smartd_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#ifdef _WIN32
  printone(out,syslog_win32_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
#endif
  printone(out,utility_c_cvsid);
  PrintOut(LOG_INFO,"%s",out);
  PrintOut(LOG_INFO, "\nsmartmontools release " PACKAGE_VERSION " dated " SMARTMONTOOLS_RELEASE_DATE " at " SMARTMONTOOLS_RELEASE_TIME "\n");
  PrintOut(LOG_INFO, "smartmontools build host: " SMARTMONTOOLS_BUILD_HOST "\n");
  PrintOut(LOG_INFO, "smartmontools build configured: " SMARTMONTOOLS_CONFIGURE_DATE "\n");
  PrintOut(LOG_INFO, "smartd compile dated " __DATE__ " at "__TIME__ "\n");
  PrintOut(LOG_INFO, "smartmontools configure arguments: %s\n", configargs);
  return;
}

// Removes config file entry, freeing all memory
void RmConfigEntry(cfgfile **anentry, int whatline){
  
  cfgfile *cfg;

  // pointer should never be null!
  if (!anentry){
    PrintOut(LOG_CRIT,"Internal error in RmConfigEntry() at line %d of file %s\n%s",
             whatline, filenameandversion, reportbug);    
    EXIT(EXIT_BADCODE);
  }
  
  // only remove entries that exist!
  if (!(cfg=*anentry))
    return;

  // entry exists -- free all of its memory  
  cfg->name            = FreeNonZero(cfg->name,           -1,__LINE__,filenameandversion);
  cfg->smartthres      = FreeNonZero(cfg->smartthres,      sizeof(struct ata_smart_thresholds_pvt),__LINE__,filenameandversion);
  cfg->smartval        = FreeNonZero(cfg->smartval,        sizeof(struct ata_smart_values),__LINE__,filenameandversion);
  cfg->monitorattflags = FreeNonZero(cfg->monitorattflags, NMONITOR*32,__LINE__,filenameandversion);
  cfg->attributedefs   = FreeNonZero(cfg->attributedefs,   MAX_ATTRIBUTE_NUM,__LINE__,filenameandversion);
  if (cfg->mailwarn){
    cfg->mailwarn->address         = FreeNonZero(cfg->mailwarn->address,        -1,__LINE__,filenameandversion);
    cfg->mailwarn->emailcmdline    = FreeNonZero(cfg->mailwarn->emailcmdline,   -1,__LINE__,filenameandversion);
    cfg->mailwarn                  = FreeNonZero(cfg->mailwarn,   sizeof(maildata),__LINE__,filenameandversion);
  }
  cfg->testdata        = FreeTestData(cfg->testdata);
  *anentry             = FreeNonZero(cfg,                  sizeof(cfgfile),__LINE__,filenameandversion);

  return;
}

// deallocates all memory associated with cfgentries list
void RmAllConfigEntries(){
  int i;

  for (i=0; i<cfgentries_max; i++)
    RmConfigEntry(cfgentries+i, __LINE__);

  cfgentries=FreeNonZero(cfgentries, sizeof(cfgfile *)*cfgentries_max, __LINE__, filenameandversion);
  cfgentries_max=0;

  return;
}

// deallocates all memory associated with ATA/SCSI device lists
void RmAllDevEntries(){
  int i;
  
  for (i=0; i<atadevlist_max; i++)
    RmConfigEntry(atadevlist+i, __LINE__);

  atadevlist=FreeNonZero(atadevlist, sizeof(cfgfile *)*atadevlist_max, __LINE__, filenameandversion);
  atadevlist_max=0;

  for (i=0; i<scsidevlist_max; i++)
    RmConfigEntry(scsidevlist+i, __LINE__);
  
  scsidevlist=FreeNonZero(scsidevlist, sizeof(cfgfile *)*scsidevlist_max, __LINE__, filenameandversion);
  scsidevlist_max=0;

  return;
}

// remove the PID file
void RemovePidFile(){
  if (pid_file) {
    if ( -1==unlink(pid_file) )
      PrintOut(LOG_CRIT,"Can't unlink PID file %s (%s).\n", 
               pid_file, strerror(errno));
    pid_file=FreeNonZero(pid_file, -1,__LINE__,filenameandversion);
  }
  return;
}


//  Note if we catch a SIGUSR1
void USR1handler(int sig){
  if (SIGUSR1==sig)
    caughtsigUSR1=1;
  return;
}

#ifdef _WIN32
//  Note if we catch a SIGUSR2
void USR2handler(int sig){
  if (SIGUSR2==sig)
    caughtsigUSR2=1;
  return;
}
#endif

// Note if we catch a HUP (or INT in debug mode)
void HUPhandler(int sig){
  if (sig==SIGHUP)
    caughtsigHUP=1;
  else
    caughtsigHUP=2;
  return;
}

// signal handler for TERM, QUIT, and INT (if not in debug mode)
void sighandler(int sig){
  if (!caughtsigEXIT)
    caughtsigEXIT=sig;
  return;
}


// signal handler that prints Goodbye message and removes pidfile
void Goodbye(void){
  
  // clean up memory -- useful for debugging
  RmAllConfigEntries();
  RmAllDevEntries();

  // delete PID file, if one was created
  RemovePidFile();

  // remove alternate configfile name
  configfile_alt=FreeNonZero(configfile_alt, -1,__LINE__,filenameandversion);

  // useful for debugging -- have we managed memory correctly?
  if (debugmode || (bytes && exitstatus!=EXIT_NOMEM))
    PrintOut(LOG_INFO, "Memory still allocated for devices at exit is %"PRId64" bytes.\n", bytes);

  // if we are exiting because of a code bug, tell user
  if (exitstatus==EXIT_BADCODE || (bytes && exitstatus!=EXIT_NOMEM))
        PrintOut(LOG_CRIT, "Please inform " PACKAGE_BUGREPORT ", including output of smartd -V.\n");

  if (exitstatus==0 && bytes)
    exitstatus=EXIT_BADCODE;

  // and this should be the final output from smartd before it exits
  PrintOut(exitstatus?LOG_CRIT:LOG_INFO, "smartd is exiting (exit status %d)\n", exitstatus);

  return;
}

#define ENVLENGTH 512

// a replacement for setenv() which is not available on all platforms.
// Note that the string passed to putenv must not be freed or made
// invalid, since a pointer to it is kept by putenv(). This means that
// it must either be a static buffer or allocated off the heap. The
// string can be freed if the environment variable is redefined or
// deleted via another call to putenv(). So we keep these on the stack
// as long as the popen() call is underway.
int exportenv(char* stackspace, const char *name, const char *value){
  snprintf(stackspace,ENVLENGTH, "%s=%s", name, value);
  return putenv(stackspace);
}

char* dnsdomain(const char* hostname) {
  char *p = NULL;
#ifdef HAVE_GETHOSTBYNAME
  struct hostent *hp;
  
  if ((hp = gethostbyname(hostname))) {
    // Does this work if gethostbyname() returns an IPv6 name in
    // colon/dot notation?  [BA]
    if ((p = strchr(hp->h_name, '.')))
      p++; // skip "."
  }
#else
  ARGUSED(hostname);
#endif
  return p;
}

#define EBUFLEN 1024

// If either address or executable path is non-null then send and log
// a warning email, or execute executable
void MailWarning(cfgfile *cfg, int which, char *fmt, ...){
  char command[2048], message[256], hostname[256], domainname[256], additional[256];
  char original[256], further[256], nisdomain[256], subject[256],dates[DATEANDEPOCHLEN];
  char environ_strings[10][ENVLENGTH];
  time_t epoch;
  va_list ap;
  const int day=24*3600;
  int days=0;
  char *whichfail[]={
    "EmailTest",                  // 0
    "Health",                     // 1
    "Usage",                      // 2
    "SelfTest",                   // 3
    "ErrorCount",                 // 4
    "FailedHealthCheck",          // 5
    "FailedReadSmartData",        // 6
    "FailedReadSmartErrorLog",    // 7
    "FailedReadSmartSelfTestLog", // 8
    "FailedOpenDevice",           // 9
    "CurrentPendingSector",       // 10
    "OfflineUncorrectableSector" //  11
  };
  
  char *address, *executable;
  mailinfo *mail;
  maildata* data=cfg->mailwarn;
  FILE *pfp=NULL;
  char *newadd=NULL, *newwarn=NULL;
  const char *unknown="[Unknown]";

  // See if user wants us to send mail
  if (!data)
    return;
  
  address=data->address;
  executable=data->emailcmdline;
  
  if (!address && !executable)
    return;
  
  // which type of mail are we sending?
  mail=(data->maillog)+which;
  
  // checks for sanity
  if (data->emailfreq<1 || data->emailfreq>3) {
    PrintOut(LOG_CRIT,"internal error in MailWarning(): cfg->mailwarn->emailfreq=%d\n",data->emailfreq);
    return;
  }
  if (which<0 || which>=SMARTD_NMAIL || sizeof(whichfail)!=SMARTD_NMAIL*sizeof(char *)) {
    PrintOut(LOG_CRIT,"Contact " PACKAGE_BUGREPORT "; internal error in MailWarning(): which=%d, size=%d\n",
             which, (int)sizeof(whichfail));
    return;
  }
  
  // Return if a single warning mail has been sent.
  if ((data->emailfreq==1) && mail->logged)
    return;

  // Return if this is an email test and one has already been sent.
  if (which == 0 && mail->logged)
    return;
  
  // To decide if to send mail, we need to know what time it is.
  epoch=time(NULL);

  // Return if less than one day has gone by
  if (data->emailfreq==2 && mail->logged && epoch<(mail->lastsent+day))
    return;

  // Return if less than 2^(logged-1) days have gone by
  if (data->emailfreq==3 && mail->logged){
    days=0x01<<(mail->logged-1);
    days*=day;
    if  (epoch<(mail->lastsent+days))
      return;
  }

  // record the time of this mail message, and the first mail message
  if (!mail->logged)
    mail->firstsent=epoch;
  mail->lastsent=epoch;
  
  // get system host & domain names (not null terminated if length=MAX) 
#ifdef HAVE_GETHOSTNAME
  if (gethostname(hostname, 256))
    strcpy(hostname, unknown);
  else {
    char *p=NULL;
    hostname[255]='\0';
    p = dnsdomain(hostname);
    if (p && *p) {
      strncpy(domainname, p, 255);
      domainname[255]='\0';
    } else
      strcpy(domainname, unknown);
  }
#else
  strcpy(hostname, unknown);
  strcpy(domainname, unknown);
#endif
  
#ifdef HAVE_GETDOMAINNAME
  if (getdomainname(nisdomain, 256))
    strcpy(nisdomain, unknown);
  else
    nisdomain[255]='\0';
#else
  strcpy(nisdomain, unknown);
#endif
  
  // print warning string into message
  va_start(ap, fmt);
  vsnprintf(message, 256, fmt, ap);
  va_end(ap);

  // appropriate message about further information
  additional[0]=original[0]=further[0]='\0';
  if (which) {
    sprintf(further,"You can also use the smartctl utility for further investigation.\n");

    switch (data->emailfreq){
    case 1:
      sprintf(additional,"No additional email messages about this problem will be sent.\n");
      break;
    case 2:
      sprintf(additional,"Another email message will be sent in 24 hours if the problem persists.\n");
      break;
    case 3:
      sprintf(additional,"Another email message will be sent in %d days if the problem persists\n",
              (0x01)<<mail->logged);
      break;
    }
    if (data->emailfreq>1 && mail->logged){
      dateandtimezoneepoch(dates, mail->firstsent);
      sprintf(original,"The original email about this issue was sent at %s\n", dates);
    }
  }
  
#ifndef _WIN32

  snprintf(subject, 256,"SMART error (%s) detected on host: %s", whichfail[which], hostname);

  // If the user has set cfg->emailcmdline, use that as mailer, else "mail" or "mailx".
  if (!executable)
#ifdef DEFAULT_MAILER
    executable = DEFAULT_MAILER ;
#else
    executable = "mail";
#endif

  // make a private copy of address with commas replaced by spaces
  // to separate recipients
  if (address) {
    char *comma=address=CustomStrDup(data->address, 1, __LINE__, filenameandversion);
    while ((comma=strchr(comma, ',')))
      *comma=' ';
  }

  // Export information in environment variables that will be useful
  // for user scripts
  exportenv(environ_strings[0], "SMARTD_MAILER", executable);
  exportenv(environ_strings[1], "SMARTD_MESSAGE", message);
  exportenv(environ_strings[2], "SMARTD_SUBJECT", subject);
  dateandtimezoneepoch(dates, mail->firstsent);
  exportenv(environ_strings[3], "SMARTD_TFIRST", dates);
  snprintf(dates, DATEANDEPOCHLEN,"%d", (int)mail->firstsent);
  exportenv(environ_strings[4], "SMARTD_TFIRSTEPOCH", dates);
  exportenv(environ_strings[5], "SMARTD_FAILTYPE", whichfail[which]);
  if (address)
    exportenv(environ_strings[6], "SMARTD_ADDRESS", address);
  exportenv(environ_strings[7], "SMARTD_DEVICESTRING", cfg->name);

  if (cfg->escalade){
    char *s,devicetype[16];
    sprintf(devicetype, "3ware,%d", cfg->escalade-1);
    exportenv(environ_strings[8], "SMARTD_DEVICETYPE", devicetype);
    if ((s=strchr(cfg->name, ' ')))
      *s='\0';
    exportenv(environ_strings[9], "SMARTD_DEVICE", cfg->name);
    if (s)
      *s=' ';
  }
  else {
    exportenv(environ_strings[8], "SMARTD_DEVICETYPE", cfg->tryata?"ata":"scsi");
    exportenv(environ_strings[9], "SMARTD_DEVICE", cfg->name);
  }

  // now construct a command to send this as EMAIL
  if (address)
    snprintf(command, 2048, 
             "$SMARTD_MAILER -s '%s' %s 2>&1 << \"ENDMAIL\"\n"
             "This email was generated by the smartd daemon running on:\n\n"
	     "   host name: %s\n"
             "  DNS domain: %s\n"
	     "  NIS domain: %s\n\n"
             "The following warning/error was logged by the smartd daemon:\n\n"
             "%s\n\n"
             "For details see host's SYSLOG (default: /var/log/messages).\n\n"
             "%s%s%s"
             "ENDMAIL\n",
	     subject, address, hostname, domainname, nisdomain, message, further, original, additional);
  else
    snprintf(command, 2048, "%s 2>&1", executable);
  
  // tell SYSLOG what we are about to do...
  newadd=address?address:"<nomailer>";
  newwarn=which?"Warning via":"Test of";

  PrintOut(LOG_INFO,"%s %s to %s ...\n",
           which?"Sending warning via ":"Executing test of", executable, newadd);
  
  // issue the command to send mail or to run the user's executable
  errno=0;
  if (!(pfp=popen(command, "r")))
    // failed to popen() mail process
    PrintOut(LOG_CRIT,"%s %s to %s: failed (fork or pipe failed, or no memory) %s\n", 
	     newwarn,  executable, newadd, errno?strerror(errno):"");
  else {
    // pipe suceeded!
    int len, status;
    char buffer[EBUFLEN];

    // if unexpected output on stdout/stderr, null terminate, print, and flush
    if ((len=fread(buffer, 1, EBUFLEN, pfp))) {
      int count=0;
      int newlen = len<EBUFLEN ? len : EBUFLEN-1;
      buffer[newlen]='\0';
      PrintOut(LOG_CRIT,"%s %s to %s produced unexpected output (%s%d bytes) to STDOUT/STDERR: \n%s\n", 
	       newwarn, executable, newadd, len!=newlen?"here truncated to ":"", newlen, buffer);
      
      // flush pipe if needed
      while (fread(buffer, 1, EBUFLEN, pfp) && count<EBUFLEN)
	count++;

      // tell user that pipe was flushed, or that something is really wrong
      if (count && count<EBUFLEN)
	PrintOut(LOG_CRIT,"%s %s to %s: flushed remaining STDOUT/STDERR\n", 
		 newwarn, executable, newadd);
      else if (count)
	PrintOut(LOG_CRIT,"%s %s to %s: more than 1 MB STDOUT/STDERR flushed, breaking pipe\n", 
		 newwarn, executable, newadd);
    }
    
    // if something went wrong with mail process, print warning
    errno=0;
    if (-1==(status=pclose(pfp)))
      PrintOut(LOG_CRIT,"%s %s to %s: pclose(3) failed %s\n", newwarn, executable, newadd,
	       errno?strerror(errno):"");
    else {
      // mail process apparently succeeded. Check and report exit status
      int status8;

      if (WIFEXITED(status)) {
	// exited 'normally' (but perhaps with nonzero status)
	status8=WEXITSTATUS(status);
	
	if (status8>128)  
	  PrintOut(LOG_CRIT,"%s %s to %s: failed (32-bit/8-bit exit status: %d/%d) perhaps caught signal %d [%s]\n", 
		   newwarn, executable, newadd, status, status8, status8-128, strsignal(status8-128));
	else if (status8)  
	  PrintOut(LOG_CRIT,"%s %s to %s: failed (32-bit/8-bit exit status: %d/%d)\n", 
		   newwarn, executable, newadd, status, status8);
	else
	  PrintOut(LOG_INFO,"%s %s to %s: successful\n", newwarn, executable, newadd);
      }
      
      if (WIFSIGNALED(status))
	PrintOut(LOG_INFO,"%s %s to %s: exited because of uncaught signal %d [%s]\n", 
		 newwarn, executable, newadd, WTERMSIG(status), strsignal(WTERMSIG(status)));
      
      // this branch is probably not possible. If subprocess is
      // stopped then pclose() should not return.
      if (WIFSTOPPED(status)) 
      	PrintOut(LOG_CRIT,"%s %s to %s: process STOPPED because it caught signal %d [%s]\n",
		 newwarn, executable, newadd, WSTOPSIG(status), strsignal(WSTOPSIG(status)));
      
    }
  }
  
  // increment mail sent counter
  mail->logged++;
  
  // free copy of address (without commas)
  address=FreeNonZero(address, -1, __LINE__, filenameandversion);

#else // _WIN32

  ARGUSED(environ_strings); ARGUSED(pfp); ARGUSED(newadd); ARGUSED(newwarn);

  // address "[sys]msgbox" => show warning as messagebox
  if (address && (!strcmp(address, "msgbox") || !strcmp(address, "sysmsgbox"))) {
    snprintf(subject, sizeof(subject), "SMART error (%s) detected", whichfail[which]);
    snprintf(command, sizeof(command),
             "The following warning/error was logged by the smartd daemon:\n\n"
             "%s\n\n"
             "For details see the event log or log file of smartd.\n\n"
             "%s%s%s",
             message, further, original, additional);
    PrintOut(LOG_INFO,"Displaying Message Box: %s\n", subject);
    daemon_messagebox((address[0]=='s'), subject, command);
  }
  else
    PrintOut(LOG_INFO,"Warning Mail feature not implemented yet\n"); 

  mail->logged++;

#endif // _WIN32
  return;
}

// Printing function for watching ataprint commands, or losing them
// [From GLIBC Manual: Since the prototype doesn't specify types for
// optional arguments, in a call to a variadic function the default
// argument promotions are performed on the optional argument
// values. This means the objects of type char or short int (whether
// signed or not) are promoted to either int or unsigned int, as
// appropriate.]
void pout(char *fmt, ...){
  va_list ap;

  // get the correct time in syslog()
  FixGlibcTimeZoneBug();
  // initialize variable argument list 
  va_start(ap,fmt);
  // in debug==1 mode we will print the output from the ataprint.o functions!
  if (debugmode && debugmode!=2)
#ifdef _WIN32
   if (facility == LOG_LOCAL1) // logging to stdout
    vfprintf(stderr,fmt,ap);
   else   
#endif
    vprintf(fmt,ap);
  // in debug==2 mode we print output from knowndrives.o functions
  else if (debugmode==2 || con->reportataioctl || con->reportscsiioctl || con->escalade) {
    openlog("smartd", LOG_PID, facility);
    vsyslog(LOG_INFO, fmt, ap);
    closelog();
  }
  va_end(ap);
  fflush(NULL);
  return;
}

// This function prints either to stdout or to the syslog as needed.
// This function is also used by utility.c to report LOG_CRIT errors.
void PrintOut(int priority,char *fmt, ...){
  va_list ap;
  
  // get the correct time in syslog()
  FixGlibcTimeZoneBug();
  // initialize variable argument list 
  va_start(ap,fmt);
  if (debugmode) 
#ifdef _WIN32
   if (facility == LOG_LOCAL1) // logging to stdout
    vfprintf(stderr,fmt,ap);
   else   
#endif
    vprintf(fmt,ap);
  else {
    openlog("smartd", LOG_PID, facility);
    vsyslog(priority,fmt,ap);
    closelog();
  }
  va_end(ap);
  return;
}

// Forks new process, closes ALL file descriptors, redirects stdin,
// stdout, and stderr.  Not quite daemon().  See
// http://www.iar.unlp.edu.ar/~fede/revistas/lj/Magazines/LJ47/2335.html
// for a good description of why we do things this way.
void DaemonInit(){
#ifndef _WIN32
  pid_t pid;
  int i;  

  // flush all buffered streams.  Else we might get two copies of open
  // streams since both parent and child get copies of the buffers.
  fflush(NULL);
  
  if ((pid=fork()) < 0) {
    // unable to fork!
    PrintOut(LOG_CRIT,"smartd unable to fork daemon process!\n");
    EXIT(EXIT_STARTUP);
  }
  else if (pid)
    // we are the parent process -- exit cleanly
    EXIT(0);
  
  // from here on, we are the child process.
  setsid();

  // Fork one more time to avoid any possibility of having terminals
  if ((pid=fork()) < 0) {
    // unable to fork!
    PrintOut(LOG_CRIT,"smartd unable to fork daemon process!\n");
    EXIT(EXIT_STARTUP);
  }
  else if (pid)
    // we are the parent process -- exit cleanly
    EXIT(0);

  // Now we are the child's child...

  // close any open file descriptors
  for (i=getdtablesize();i>=0;--i)
    close(i);
  
  // redirect any IO attempts to /dev/null for stdin
  i=open("/dev/null",O_RDWR);
  // stdout
  dup(i);
  // stderr
  dup(i);
  umask(0);
  chdir("/");
  
  PrintOut(LOG_INFO, "smartd has fork()ed into background mode. New PID=%d.\n", (int)getpid());

#else // _WIN32

  // No fork() on native Win32
  // Detach this process from console
  fflush(NULL);
  if (daemon_detach("smartd")) {
    PrintOut(LOG_CRIT,"smartd unable to detach from console!\n");
    EXIT(EXIT_STARTUP);
  }
  //PrintOut(LOG_INFO, "smartd has been detached from console.\n");

#endif // _WIN32
  return;
}

// create a PID file containing the current process id
void WritePidFile() {
  if (pid_file) {
    int error = 0;
    pid_t pid = getpid();
    mode_t old_umask;
    FILE* fp; 
    
    old_umask = umask(0077);
    fp = fopen(pid_file, "w");
    umask(old_umask);
    if (fp == NULL) {
      error = 1;
    } else if (fprintf(fp, "%d\n", (int)pid) <= 0) {
      error = 1;
    } else if (fclose(fp) != 0) {
      error = 1;
    }
    if (error) {
      PrintOut(LOG_CRIT, "unable to write PID file %s - exiting.\n", pid_file);
      EXIT(EXIT_PID);
    }
    PrintOut(LOG_INFO, "file %s written containing PID %d\n", pid_file, (int)pid);
  }
  return;
}

// Prints header identifying version of code and home
void PrintHead(){
  PrintOut(LOG_INFO,"smartd version %s Copyright (C) 2002-4 Bruce Allen\n", PACKAGE_VERSION);
  PrintOut(LOG_INFO,"Home page is " PACKAGE_HOMEPAGE "\n\n");
  return;
}

// prints help info for configuration file Directives
void Directives() {
  PrintOut(LOG_INFO,
           "Configuration file (%s) Directives (after device name):\n"
           "  -d TYPE Set the device type: ata, scsi, removable, 3ware,N\n"
           "  -T TYPE Set the tolerance to one of: normal, permissive\n"
           "  -o VAL  Enable/disable automatic offline tests (on/off)\n"
           "  -S VAL  Enable/disable attribute autosave (on/off)\n"
           "  -n MODE No check if: never, sleep, standby, idle\n"
           "  -H      Monitor SMART Health Status, report if failed\n"
           "  -s REG  Do Self-Test at time(s) given by regular expression REG\n"
           "  -l TYPE Monitor SMART log.  Type is one of: error, selftest\n"
           "  -f      Monitor 'Usage' Attributes, report failures\n"
           "  -m ADD  Send email warning to address ADD\n"
           "  -M TYPE Modify email warning behavior (see man page)\n"
           "  -p      Report changes in 'Prefailure' Attributes\n"
           "  -u      Report changes in 'Usage' Attributes\n"
           "  -t      Equivalent to -p and -u Directives\n"
           "  -r ID   Also report Raw values of Attribute ID with -p, -u or -t\n"
           "  -R ID   Track changes in Attribute ID Raw value with -p, -u or -t\n"
           "  -i ID   Ignore Attribute ID for -f Directive\n"
           "  -I ID   Ignore Attribute ID for -p, -u or -t Directive\n"
	   "  -C ID   Monitor Current Pending Sectors in Attribute ID\n"
	   "  -U ID   Monitor Offline Uncorrectable Sectors in Attribute ID\n"
           "  -v N,ST Modifies labeling of Attribute N (see man page)  \n"
           "  -P TYPE Drive-specific presets: use, ignore, show, showall\n"
           "  -a      Default: -H -f -t -l error -l selftest -C 197 -U 198\n"
           "  -F TYPE Firmware bug workaround: none, samsung, samsung2\n"
           "   #      Comment: text after a hash sign is ignored\n"
           "   \\      Line continuation character\n"
           "Attribute ID is a decimal integer 1 <= ID <= 255\n"
	   "Use ID = 0 to turn off -C and/or -U Directives\n"
           "Example: /dev/hda -a\n", 
           configfile);
  return;
}

/* Returns a pointer to a static string containing a formatted list of the valid
   arguments to the option opt or NULL on failure. */
const char *GetValidArgList(char opt) {
  switch (opt) {
  case 'c':
    return "<FILE_NAME>, -";
  case 's':
    return "valid_regular_expression";
  case 'l':
    return "daemon, local0, local1, local2, local3, local4, local5, local6, local7";
  case 'q':
    return "nodev, errors, nodevstartup, never, onecheck";
  case 'r':
    return "ioctl[,N], ataioctl[,N], scsiioctl[,N]";
  case 'p':
    return "<FILE_NAME>";
  case 'i':
    return "<INTEGER_SECONDS>";
  default:
    return NULL;
  }
}

/* prints help information for command syntax */
void Usage (void){
  PrintOut(LOG_INFO,"Usage: smartd [options]\n\n");
#ifdef HAVE_GETOPT_LONG
  PrintOut(LOG_INFO,"  -c NAME|-, --configfile=NAME|-\n");
  PrintOut(LOG_INFO,"        Read configuration file NAME or stdin [default is %s]\n\n", configfile);
  PrintOut(LOG_INFO,"  -d, --debug\n");
  PrintOut(LOG_INFO,"        Start smartd in debug mode\n\n");
  PrintOut(LOG_INFO,"  -D, --showdirectives\n");
  PrintOut(LOG_INFO,"        Print the configuration file Directives and exit\n\n");
  PrintOut(LOG_INFO,"  -h, --help, --usage\n");
  PrintOut(LOG_INFO,"        Display this help and exit\n\n");
  PrintOut(LOG_INFO,"  -i N, --interval=N\n");
  PrintOut(LOG_INFO,"        Set interval between disk checks to N seconds, where N >= 10\n\n");
  PrintOut(LOG_INFO,"  -l local[0-7], --logfacility=local[0-7]\n");
#if !(defined(_WIN32) || defined(__CYGWIN__))
  PrintOut(LOG_INFO,"        Use syslog facility local0 - local7 or daemon [default]\n\n");
#else
#ifdef _WIN32
  PrintOut(LOG_INFO,"        Log to \"./smartd.log\", stdout, stderr [default is event log]\n\n");
#else
  PrintOut(LOG_INFO,"        Use syslog facility local0 - local7 (ignored on Cygwin)\n\n");
#endif
#endif // __WIN32 || __CYGWIN__
  PrintOut(LOG_INFO,"  -p NAME, --pidfile=NAME\n");
  PrintOut(LOG_INFO,"        Write PID file NAME\n\n");
  PrintOut(LOG_INFO,"  -q WHEN, --quit=WHEN\n");
  PrintOut(LOG_INFO,"        Quit on one of: %s\n\n", GetValidArgList('q'));
  PrintOut(LOG_INFO,"  -r, --report=TYPE\n");
  PrintOut(LOG_INFO,"        Report transactions for one of: %s\n\n", GetValidArgList('r'));
  PrintOut(LOG_INFO,"  -V, --version, --license, --copyright\n");
  PrintOut(LOG_INFO,"        Print License, Copyright, and version information\n");
#else
  PrintOut(LOG_INFO,"  -c NAME|-  Read configuration file NAME or stdin [default is %s]\n", configfile);
  PrintOut(LOG_INFO,"  -d         Start smartd in debug mode\n");
  PrintOut(LOG_INFO,"  -D         Print the configuration file Directives and exit\n");
  PrintOut(LOG_INFO,"  -h         Display this help and exit\n");
  PrintOut(LOG_INFO,"  -i N       Set interval between disk checks to N seconds, where N >= 10\n");
  PrintOut(LOG_INFO,"  -l local?  Use syslog facility local0 - local7, or daemon\n");
  PrintOut(LOG_INFO,"  -p NAME    Write PID file NAME\n");
  PrintOut(LOG_INFO,"  -q WHEN    Quit on one of: %s\n", GetValidArgList('q'));
  PrintOut(LOG_INFO,"  -r TYPE    Report transactions for one of: %s\n", GetValidArgList('r'));
  PrintOut(LOG_INFO,"  -V         Print License, Copyright, and version information\n");
#endif
}

// returns negative if problem, else fd>=0
static int OpenDevice(char *device, char *mode) {
  int fd;
  char *s=device;
  
  // If there is an ASCII "space" character in the device name,
  // terminate string there.  This is for 3ware devices only.
  if ((s=strchr(device,' ')))
    *s='\0';

  // open the device
  fd = deviceopen(device, mode);

  // if we removed a space, put it back in please
  if (s)
    *s=' ';

  // if we failed to open the device, complain!
  if (fd < 0) {

    // For linux+devfs, a nonexistent device gives a strange error
    // message.  This makes the error message a bit more sensible.
    if (errno==ENOENT || errno==ENOTDIR)
      errno=ENODEV;
    
    PrintOut(LOG_INFO,"Device: %s, %s, open() failed\n",
             device, strerror(errno));
    return -1;
  }
  // device opened sucessfully
  return fd;
}

int CloseDevice(int fd, char *name){
  if (deviceclose(fd)){
    PrintOut(LOG_INFO,"Device: %s, %s, close(%d) failed\n", name, strerror(errno), fd);
    return 1;
  }
  // device sucessfully closed
  return 0;
}

// returns <0 on failure
int ATAErrorCount(int fd, char *name){
  struct ata_smart_errorlog log;
  
  if (-1==ataReadErrorLog(fd,&log)){
    PrintOut(LOG_INFO,"Device: %s, Read SMART Error Log Failed\n",name);
    return -1;
  }
  
  // return current number of ATA errors
  return log.error_log_pointer?log.ata_error_count:0;
}

// returns <0 if problem.  Otherwise, bottom 8 bits are the self test
// error count, and top bits are the power-on hours of the last error.
int SelfTestErrorCount(int fd, char *name){
  struct ata_smart_selftestlog log;

  if (-1==ataReadSelfTestLog(fd,&log)){
    PrintOut(LOG_INFO,"Device: %s, Read SMART Self Test Log Failed\n",name);
    return -1;
  }
  
  // return current number of self-test errors
  return ataPrintSmartSelfTestlog(&log,0);
}

// scan to see what ata devices there are, and if they support SMART
int ATADeviceScan(cfgfile *cfg){
  int fd, supported=0;
  struct ata_identify_device drive;
  char *name=cfg->name;
  int retainsmartdata=0;
  int retid;

  // should we try to register this as an ATA device?
  if (!(cfg->tryata))
    return 1;
  
  // open the device
  if ((fd=OpenDevice(name, "ATA"))<0)
    // device open failed
    return 1;
  PrintOut(LOG_INFO,"Device: %s, opened\n", name);
  
  // pass user settings on to low-level ATA commands
  con->escalade=cfg->escalade;
  con->fixfirmwarebug = cfg->fixfirmwarebug;

  // Get drive identity structure
  if ((retid=ataReadHDIdentity (fd,&drive))){
    if (retid<0)
      // Unable to read Identity structure
      PrintOut(LOG_INFO,"Device: %s, not ATA, no IDENTIFY DEVICE Structure\n",name);
    else
      PrintOut(LOG_INFO,"Device: %s, packet devices [this device %s] not SMART capable\n",
               name, packetdevicetype(retid-1));
    CloseDevice(fd, name);
    return 2; 
  }

  // Show if device in database, and use preset vendor attribute
  // options unless user has requested otherwise.
  if (cfg->ignorepresets)
    PrintOut(LOG_INFO, "Device: %s, smartd database not searched (Directive: -P ignore).\n", name);
  else {
    // do whatever applypresets decides to do. Will allocate memory if
    // cfg->attributedefs is needed.
    if (applypresets(&drive, &cfg->attributedefs, con)<0)
      PrintOut(LOG_INFO, "Device: %s, not found in smartd database.\n", name);
    else
      PrintOut(LOG_INFO, "Device: %s, found in smartd database.\n", name);
    
    // then save the correct state of the flag (applypresets may have changed it)
    cfg->fixfirmwarebug = con->fixfirmwarebug;
  }
  
  // If requested, show which presets would be used for this drive
  if (cfg->showpresets) {
    int savedebugmode=debugmode;
    PrintOut(LOG_INFO, "Device %s: presets are:\n", name);
    if (!debugmode)
      debugmode=2;
    showpresets(&drive);
    debugmode=savedebugmode;
  }

  // see if drive supports SMART
  supported=ataSmartSupport(&drive);
  if (supported!=1) {
    if (supported==0)
      // drive does NOT support SMART
      PrintOut(LOG_INFO,"Device: %s, lacks SMART capability\n",name);
    else
      // can't tell if drive supports SMART
      PrintOut(LOG_INFO,"Device: %s, ATA IDENTIFY DEVICE words 82-83 don't specify if SMART capable.\n",name);
  
    // should we proceed anyway?
    if (cfg->permissive){
      PrintOut(LOG_INFO,"Device: %s, proceeding since '-T permissive' Directive given.\n",name);
    }
    else {
      PrintOut(LOG_INFO,"Device: %s, to proceed anyway, use '-T permissive' Directive.\n",name);
      CloseDevice(fd, name);
      return 2;
    }
  }
  
  if (ataEnableSmart(fd)){
    // Enable SMART command has failed
    PrintOut(LOG_INFO,"Device: %s, could not enable SMART capability\n",name);
    CloseDevice(fd, name);
    return 2; 
  }
  
  // disable device attribute autosave...
  if (cfg->autosave==1){
    if (ataDisableAutoSave(fd))
      PrintOut(LOG_INFO,"Device: %s, could not disable SMART Attribute Autosave.\n",name);
    else
      PrintOut(LOG_INFO,"Device: %s, disabled SMART Attribute Autosave.\n",name);
  }

  // or enable device attribute autosave
  if (cfg->autosave==2){
    if (ataEnableAutoSave(fd))
      PrintOut(LOG_INFO,"Device: %s, could not enable SMART Attribute Autosave.\n",name);
    else
      PrintOut(LOG_INFO,"Device: %s, enabled SMART Attribute Autosave.\n",name);
  }

  // capability check: SMART status
  if (cfg->smartcheck && ataSmartStatus2(fd)==-1){
    PrintOut(LOG_INFO,"Device: %s, not capable of SMART Health Status check\n",name);
    cfg->smartcheck=0;
  }
  
  // capability check: Read smart values and thresholds.  Note that
  // smart values are ALSO needed even if we ONLY want to know if the
  // device is self-test log or error-log capable!  After ATA-5, this
  // information was ALSO reproduced in the IDENTIFY DEVICE response,
  // but sadly not for ATA-5.  Sigh.

  // do we need to retain SMART data after returning from this routine?
  retainsmartdata=cfg->usagefailed || cfg->prefail || cfg->usage;
  
  // do we need to get SMART data?
  if (retainsmartdata || cfg->autoofflinetest || cfg->selftest || cfg->errorlog || cfg->pending!=DONT_MONITOR_UNC) {

    unsigned char currentpending, offlinepending;

    cfg->smartval=(struct ata_smart_values *)Calloc(1,sizeof(struct ata_smart_values));
    cfg->smartthres=(struct ata_smart_thresholds_pvt *)Calloc(1,sizeof(struct ata_smart_thresholds_pvt));
    
    if (!cfg->smartval || !cfg->smartthres){
      PrintOut(LOG_CRIT,"Not enough memory to obtain SMART data\n");
      EXIT(EXIT_NOMEM);
    }
    
    if (ataReadSmartValues(fd,cfg->smartval) ||
        ataReadSmartThresholds (fd,cfg->smartthres)){
      PrintOut(LOG_INFO,"Device: %s, Read SMART Values and/or Thresholds Failed\n",name);
      retainsmartdata=cfg->usagefailed=cfg->prefail=cfg->usage=0;
      cfg->pending=DONT_MONITOR_UNC;
    }
    
    // see if the necessary Attribute is there to monitor offline or
    // current pending sectors
    TranslatePending(cfg->pending, &currentpending, &offlinepending);
    
    if (currentpending && ATAReturnAttributeRawValue(currentpending, cfg->smartval)<0) {
      PrintOut(LOG_INFO,"Device: %s, can't monitor Current Pending Sector count - no Attribute %d\n",
	       name, (int)currentpending);
      cfg->pending &= 0xff00;
      cfg->pending |= CUR_UNC_DEFAULT;
    }
    
    if (offlinepending && ATAReturnAttributeRawValue(offlinepending, cfg->smartval)<0) {
      PrintOut(LOG_INFO,"Device: %s, can't monitor Offline Uncorrectable Sector count  - no Attribute %d\n",
	       name, (int)offlinepending);
      cfg->pending &= 0x00ff;
      cfg->pending |= OFF_UNC_DEFAULT<<8;
    }
  }
  
  // enable/disable automatic on-line testing
  if (cfg->autoofflinetest){
    // is this an enable or disable request?
    char *what=(cfg->autoofflinetest==1)?"disable":"enable";
    if (!cfg->smartval)
      PrintOut(LOG_INFO,"Device: %s, could not %s SMART Automatic Offline Testing.\n",name, what);
    else {
      // if command appears unsupported, issue a warning...
      if (!isSupportAutomaticTimer(cfg->smartval))
        PrintOut(LOG_INFO,"Device: %s, SMART Automatic Offline Testing unsupported...\n",name);
      // ... but then try anyway
      if ((cfg->autoofflinetest==1)?ataDisableAutoOffline(fd):ataEnableAutoOffline(fd))
        PrintOut(LOG_INFO,"Device: %s, %s SMART Automatic Offline Testing failed.\n", name, what);
      else
        PrintOut(LOG_INFO,"Device: %s, %sd SMART Automatic Offline Testing.\n", name, what);
    }
  }
  
  // capability check: self-test-log
  if (cfg->selftest){
    int retval;
    
    // start with service disabled, and re-enable it if all works OK
    cfg->selftest=0;
    cfg->selflogcount=0;
    cfg->selfloghour=0;

    if (!cfg->smartval)
      PrintOut(LOG_INFO, "Device: %s, no SMART Self-Test log (SMART READ DATA failed); disabling -l selftest\n", name);
    else if (!cfg->permissive && !isSmartTestLogCapable(cfg->smartval, &drive))
      PrintOut(LOG_INFO, "Device: %s, appears to lack SMART Self-Test log; disabling -l selftest (override with -T permissive Directive)\n", name);
    else if ((retval=SelfTestErrorCount(fd, name))<0)
      PrintOut(LOG_INFO, "Device: %s, no SMART Self-Test log; remove -l selftest Directive from smartd.conf\n", name);
    else {
      cfg->selftest=1;
      cfg->selflogcount=SELFTEST_ERRORCOUNT(retval);
      cfg->selfloghour =SELFTEST_ERRORHOURS(retval);
    }
  }
  
  // capability check: ATA error log
  if (cfg->errorlog){
    int val;

    // start with service disabled, and re-enable it if all works OK
    cfg->errorlog=0;
    cfg->ataerrorcount=0;

    if (!cfg->smartval)
      PrintOut(LOG_INFO, "Device: %s, no SMART Error log (SMART READ DATA failed); disabling -l error\n", name);
    else if (!cfg->permissive && !isSmartErrorLogCapable(cfg->smartval, &drive))
      PrintOut(LOG_INFO, "Device: %s, appears to lack SMART Error log; disabling -l error (override with -T permissive Directive)\n", name);
    else if ((val=ATAErrorCount(fd, name))<0)
      PrintOut(LOG_INFO, "Device: %s, no SMART Error log; remove -l error Directive from smartd.conf\n", name);
    else {
        cfg->errorlog=1;
        cfg->ataerrorcount=val;
    }
  }
  
  // If we don't need to save SMART data, get rid of it now
  if (!retainsmartdata) {
    if (cfg->smartval) {
      cfg->smartval=CheckFree(cfg->smartval, __LINE__,filenameandversion);
      bytes-=sizeof(struct ata_smart_values);
    }
    if (cfg->smartthres) {
      cfg->smartthres=CheckFree(cfg->smartthres, __LINE__,filenameandversion);
      bytes-=sizeof(struct ata_smart_thresholds_pvt);
    }
  }

  // capabilities check -- does it support powermode?
  if (cfg->powermode) {
    int powermode=ataCheckPowerMode(fd);
    
    if (-1 == powermode) {
      PrintOut(LOG_CRIT, "Device: %s, no ATA CHECK POWER STATUS support, ignoring -n Directive\n", name);
      cfg->powermode=0;
    } 
    else if (powermode!=0 && powermode!=0x80 && powermode!=0xff) {
      PrintOut(LOG_CRIT, "Device: %s, CHECK POWER STATUS returned %d, not ATA compliant, ignoring -n Directive\n",
	       name, powermode);
      cfg->powermode=0;
    }
  }

  // If no tests available or selected, return
  if (!(cfg->errorlog || cfg->selftest || cfg->smartcheck || 
        cfg->usagefailed || cfg->prefail || cfg->usage)) {
    CloseDevice(fd, name);
    return 3;
  }
  
  // Do we still have entries available?
  while (numdevata>=atadevlist_max)
    atadevlist=AllocateMoreSpace(atadevlist, &atadevlist_max, "ATA device");
  
  // register device
  PrintOut(LOG_INFO,"Device: %s, is SMART capable. Adding to \"monitor\" list.\n",name);
  
    // record number of device, type of device, increment device count
  cfg->tryscsi=0;
  cfg->tryata=1;

  // close file descriptor
  CloseDevice(fd, name);
  return 0;
}

// on success, return 0. On failure, return >0.  Never return <0,
// please.
static int SCSIDeviceScan(cfgfile *cfg) {
  int k, fd, err; 
  char *device = cfg->name;
  struct scsi_iec_mode_page iec;
  UINT8  tBuf[64];
  
  // should we try to register this as a SCSI device?
  if (!cfg->tryscsi)
    return 1;
  
  // open the device
  if ((fd = OpenDevice(device, "SCSI")) < 0)
    return 1;
  PrintOut(LOG_INFO,"Device: %s, opened\n", device);
    
  // check that device is ready for commands. IE stores its stuff on
  // the media.
  if ((err = scsiTestUnitReady(fd))) {
    if (SIMPLE_ERR_NOT_READY == err)
      PrintOut(LOG_INFO, "Device: %s, NOT READY (e.g. spun down); skip device\n", device);
    else if (SIMPLE_ERR_NO_MEDIUM == err)
      PrintOut(LOG_INFO, "Device: %s, NO MEDIUM present; skip device\n", device);
    else if (SIMPLE_ERR_BECOMING_READY == err)
      PrintOut(LOG_INFO, "Device: %s, BECOMING (but not yet) READY; skip device\n", device);
    else
      PrintOut(LOG_CRIT, "Device: %s, failed Test Unit Ready [err=%d]\n", device, err);
    CloseDevice(fd, device);
    return 2; 
  }
  
  // Badly-conforming USB storage devices may fail this check.
  // The response to the following IE mode page fetch (current and
  // changeable values) is carefully examined. It has been found
  // that various USB devices that malform the response will lock up
  // if asked for a log page (e.g. temperature) so it is best to
  // bail out now.
  if (!(err = scsiFetchIECmpage(fd, &iec, cfg->modese_len)))
    cfg->modese_len = iec.modese_len;
  else if (SIMPLE_ERR_BAD_FIELD == err)
    ;  /* continue since it is reasonable not to support IE mpage */
  else { /* any other error (including malformed response) unreasonable */
    PrintOut(LOG_INFO, 
             "Device: %s, Bad IEC (SMART) mode page, err=%d, skip device\n", 
             device, err);
    CloseDevice(fd, device);
    return 3;
  }
  
  // N.B. The following is passive (i.e. it doesn't attempt to turn on
  // smart if it is off). This may change to be the same as the ATA side.
  if (!scsi_IsExceptionControlEnabled(&iec)) {
    PrintOut(LOG_INFO, "Device: %s, IE (SMART) not enabled, skip device\n"
	               "Try 'smartctl -s on %s' to turn on SMART features\n", 
                        device, device);
    CloseDevice(fd, device);
    return 3;
  }
  
  // Device exists, and does SMART.  Add to list (allocating more space if needed)
  while (numdevscsi >= scsidevlist_max)
    scsidevlist=AllocateMoreSpace(scsidevlist, &scsidevlist_max, "SCSI device");
  
  // Flag that certain log pages are supported (information may be
  // available from other sources).
  if (0 == scsiLogSense(fd, SUPPORTED_LPAGES, tBuf, sizeof(tBuf), 0)) {
    for (k = 4; k < tBuf[3] + LOGPAGEHDRSIZE; ++k) {
      switch (tBuf[k]) { 
      case TEMPERATURE_LPAGE:
        cfg->TempPageSupported = 1;
        break;
      case IE_LPAGE:
        cfg->SmartPageSupported = 1;
        break;
      default:
        break;
      }
    }   
  }
  
  // record type of device
  cfg->tryata = 0;
  cfg->tryscsi = 1;
  
  // get rid of allocated memory only needed for ATA devices.  These
  // might have been allocated if the user specified Ignore options or
  // other ATA-only Attribute-specific options on the DEVICESCAN line.
  cfg->monitorattflags = FreeNonZero(cfg->monitorattflags, NMONITOR*32,__LINE__,filenameandversion);
  cfg->attributedefs   = FreeNonZero(cfg->attributedefs,   MAX_ATTRIBUTE_NUM,__LINE__,filenameandversion);
  cfg->smartval        = FreeNonZero(cfg->smartval,        sizeof(struct ata_smart_values),__LINE__,filenameandversion);
  cfg->smartthres      = FreeNonZero(cfg->smartthres,      sizeof(struct ata_smart_thresholds_pvt),__LINE__,filenameandversion);
  
  // Check if scsiCheckIE() is going to work
  {
    UINT8 asc = 0;
    UINT8 ascq = 0;
    UINT8 currenttemp = 0;
    UINT8 triptemp = 0;
    
    if (scsiCheckIE(fd, cfg->SmartPageSupported, cfg->TempPageSupported,
                    &asc, &ascq, &currenttemp, &triptemp)) {
      PrintOut(LOG_INFO, "Device: %s, unexpectedly failed to read SMART values\n", device);
      cfg->SuppressReport = 1;
    }
  }
  
  // capability check: self-test-log
  if (cfg->selftest){
    int retval=scsiCountFailedSelfTests(fd, 0);
    if (retval<0) {
      // no self-test log, turn off monitoring
      PrintOut(LOG_INFO, "Device: %s, does not support SMART Self-Test Log.\n", device);
      cfg->selftest=0;
      cfg->selflogcount=0;
      cfg->selfloghour=0;
    }
    else {
      // register starting values to watch for changes
      cfg->selflogcount=SELFTEST_ERRORCOUNT(retval);
      cfg->selfloghour =SELFTEST_ERRORHOURS(retval);
    }
  }
  
  // disable autosave (set GLTSD bit)
  if (cfg->autosave==1){
    if (scsiSetControlGLTSD(fd, 1, cfg->modese_len))
      PrintOut(LOG_INFO,"Device: %s, could not disable autosave (set GLTSD bit).\n",device);
    else
      PrintOut(LOG_INFO,"Device: %s, disabled autosave (set GLTSD bit).\n",device);
  }

  // or enable autosave (clear GLTSD bit)
  if (cfg->autosave==2){
    if (scsiSetControlGLTSD(fd, 0, cfg->modese_len))
      PrintOut(LOG_INFO,"Device: %s, could not enable autosave (clear GLTSD bit).\n",device);
    else
      PrintOut(LOG_INFO,"Device: %s, enabled autosave (cleared GLTSD bit).\n",device);
  }
  
  // tell user we are registering device
  PrintOut(LOG_INFO, "Device: %s, is SMART capable. Adding to \"monitor\" list.\n", device);
  
  // close file descriptor
  CloseDevice(fd, device);
  return 0;
}

// We compare old and new values of the n'th attribute.  Note that n
// is NOT the attribute ID number.. If (Normalized & Raw) equal,
// then return 0, else nonzero.
int  ATACompareValues(changedattribute_t *delta,
                            struct ata_smart_values *new,
                            struct ata_smart_values *old,
                            struct ata_smart_thresholds_pvt *thresholds,
                            int n, char *name){
  struct ata_smart_attribute *now,*was;
  struct ata_smart_threshold_entry *thre;
  unsigned char oldval,newval;
  int sameraw;

  // check that attribute number in range, and no null pointers
  if (n<0 || n>=NUMBER_ATA_SMART_ATTRIBUTES || !new || !old || !thresholds)
    return 0;
  
  // pointers to disk's values and vendor's thresholds
  now=new->vendor_attributes+n;
  was=old->vendor_attributes+n;
  thre=thresholds->thres_entries+n;

  // consider only valid attributes
  if (!now->id || !was->id || !thre->id)
    return 0;
  
  
  // issue warning if they don't have the same ID in all structures:
  if ( (now->id != was->id) || (now->id != thre->id) ){
    PrintOut(LOG_INFO,"Device: %s, same Attribute has different ID numbers: %d = %d = %d\n",
             name, (int)now->id, (int)was->id, (int)thre->id);
    return 0;
  }

  // new and old values of Normalized Attributes
  newval=now->current;
  oldval=was->current;

  // See if the RAW values are unchanged (ie, the same)
  if (memcmp(now->raw, was->raw, 6))
    sameraw=0;
  else
    sameraw=1;
  
  // if any values out of the allowed range, or if the values haven't
  // changed, return 0
  if (!newval || !oldval || newval>0xfe || oldval>0xfe || (oldval==newval && sameraw))
    return 0;
  
  // values have changed.  Construct output and return
  delta->newval=newval;
  delta->oldval=oldval;
  delta->id=now->id;
  delta->prefail=ATTRIBUTE_FLAGS_PREFAILURE(now->flags);
  delta->sameraw=sameraw;

  return 1;
}

// This looks to see if the corresponding bit of the 32 bytes is set.
// This wastes a few bytes of storage but eliminates all searching and
// sorting functions! Entry is ZERO <==> the attribute ON. Calling
// with set=0 tells you if the attribute is being tracked or not.
// Calling with set=1 turns the attribute OFF.
int IsAttributeOff(unsigned char attr, unsigned char **datap, int set, int which, int whatline){
  unsigned char *data;
  int loc=attr>>3;
  int bit=attr & 0x07;
  unsigned char mask=0x01<<bit;

  if (which>=NMONITOR || which < 0){
    PrintOut(LOG_CRIT, "Internal error in IsAttributeOff() at line %d of file %s (which=%d)\n%s",
             whatline, filenameandversion, which, reportbug);
    EXIT(EXIT_BADCODE);
  }

  if (*datap == NULL){
    // NULL data implies Attributes are ON...
    if (!set)
      return 0;
    
    // we are writing
    if (!(*datap=(unsigned char *)Calloc(NMONITOR*32, 1))){
      PrintOut(LOG_CRIT,"No memory to create monattflags\n");
      EXIT(EXIT_NOMEM);
    }
  }
  
  // pointer to the 256 bits that we need
  data=*datap+which*32;

  // attribute zero is always OFF
  if (!attr)
    return 1;

  if (!set)
    return (data[loc] & mask);
  
  data[loc]|=mask;

  // return value when setting has no sense
  return 0;
}

// If the self-test log has got more self-test errors (or more recent
// self-test errors) recorded, then notify user.
void CheckSelfTestLogs(cfgfile *cfg, int new){
  char *name=cfg->name;

  if (new<0)
    // command failed
    MailWarning(cfg, 8, "Device: %s, Read SMART Self-Test Log Failed", name);
  else {      
    // old and new error counts
    int oldc=cfg->selflogcount;
    int newc=SELFTEST_ERRORCOUNT(new);
    
    // old and new error timestamps in hours
    int oldh=cfg->selfloghour;
    int newh=SELFTEST_ERRORHOURS(new);
    
    if (oldc<newc) {
      // increase in error count
      PrintOut(LOG_CRIT, "Device: %s, Self-Test Log error count increased from %d to %d\n",
               name, oldc, newc);
      MailWarning(cfg, 3, "Device: %s, Self-Test Log error count increased from %d to %d",
                   name, oldc, newc);
    } else if (oldh<newh) {
      // more recent error
      PrintOut(LOG_CRIT, "Device: %s, new Self-Test Log error at hour timestamp %d\n",
               name, newh);
      MailWarning(cfg, 3, "Device: %s, new Self-Test Log error at hour timestamp %d\n",
                   name, newh);
    }
    
    // Needed since self-test error count may DECREASE.  Hour should
    // never decrease but this does no harm.
    cfg->selflogcount= newc;
    cfg->selfloghour = newh;
  }
  return;
}

// returns 1 if time to do test of type testtype, 0 if not time to do
// test, < 0 if error
int DoTestNow(cfgfile *cfg, char testtype) {
  // start by finding out the time:
  struct tm *timenow;
  time_t epochnow;
  char matchpattern[16];
  regmatch_t substring;
  int weekday, length;
  unsigned short hours;
  testinfo *dat=cfg->testdata;

  // check that self-testing has been requested
  if (!dat)
    return 0;
  
  // since we are about to call localtime(), be sure glibc is informed
  // of any timezone changes we make.
  FixGlibcTimeZoneBug();
  
  // construct pattern containing the month, day of month, day of
  // week, and hour
  time(&epochnow);
  timenow=localtime(&epochnow);
  
  // tm_wday is 0 (Sunday) to 6 (Saturday).  We use 1 (Monday) to 7
  // (Sunday).
  weekday=timenow->tm_wday?timenow->tm_wday:7;
  sprintf(matchpattern, "%c/%02d/%02d/%1d/%02d", testtype, timenow->tm_mon+1, 
          timenow->tm_mday, weekday, timenow->tm_hour);
  
  // if no match, we are done
  if (regexec(&(dat->cregex), matchpattern, 1, &substring, 0))
    return 0;
  
  // must match the ENTIRE type/date/time string
  length=strlen(matchpattern);
  if (substring.rm_so!=0 || substring.rm_eo!=length)
    return 0;
  
  // never do a second test in the same hour as another test (the % 7 ensures
  // that the RHS will never be greater than 65535 and so will always fit into
  // an unsigned short)
  hours=1+timenow->tm_hour+24*(timenow->tm_yday+366*(timenow->tm_year % 7));
  if (hours==dat->hour) {
    if (testtype!=dat->testtype)
      PrintOut(LOG_INFO, "Device: %s, did test of type %c in current hour, skipping test of type %c\n",
	       cfg->name, dat->testtype, testtype);
    return 0;
  }
  
  // save time and type of the current test; we are ready to do a test
  dat->hour=hours;
  dat->testtype=testtype;
  return 1;
}

// Return zero on success, nonzero on failure. Perform offline (background)
// short or long (extended) self test on given scsi device.
int DoSCSISelfTest(int fd, cfgfile *cfg, char testtype) {
  int retval = 0;
  char *testname = NULL;
  char *name = cfg->name;
  int inProgress;

  if (scsiSelfTestInProgress(fd, &inProgress)) {
    PrintOut(LOG_CRIT, "Device: %s, does not support Self-Tests\n", name);
    cfg->testdata->not_cap_short=cfg->testdata->not_cap_long=1;
    return 1;
  }

  if (1 == inProgress) {
    PrintOut(LOG_INFO, "Device: %s, skip since Self-Test already in "
             "progress.\n", name);
    return 1;
  }

  switch (testtype) {
  case 'S':
    testname = "Short Self";
    retval = scsiSmartShortSelfTest(fd);
    break;
  case 'L':
    testname = "Long Self";
    retval = scsiSmartExtendSelfTest(fd);
    break;
  }
  // If we can't do the test, exit
  if (NULL == testname) {
    PrintOut(LOG_CRIT, "Device: %s, not capable of %c Self-Test\n", name, 
             testtype);
    return 1;
  }
  if (retval) {
    if ((SIMPLE_ERR_BAD_OPCODE == retval) || 
        (SIMPLE_ERR_BAD_FIELD == retval)) {
      PrintOut(LOG_CRIT, "Device: %s, not capable of %s-Test\n", name, 
               testname);
      if ('L'==testtype)
        cfg->testdata->not_cap_long=1;
      else
        cfg->testdata->not_cap_short=1;
     
      return 1;
    }
    PrintOut(LOG_CRIT, "Device: %s, execute %s-Test failed (err: %d)\n", name, 
             testname, retval);
    return 1;
  }
  
  PrintOut(LOG_INFO, "Device: %s, starting scheduled %s-Test.\n", name, testname);
  
  return 0;
}

// Do an offline immediate or self-test.  Return zero on success,
// nonzero on failure.
int DoATASelfTest(int fd, cfgfile *cfg, char testtype) {
  
  struct ata_smart_values data;
  char *testname=NULL;
  int retval, dotest=-1;
  char *name=cfg->name;
  
  // Read current smart data and check status/capability
  if (ataReadSmartValues(fd, &data) || !(data.offline_data_collection_capability)) {
    PrintOut(LOG_CRIT, "Device: %s, not capable of Offline or Self-Testing.\n", name);
    return 1;
  }
  
  // Check for capability to do the test
  switch (testtype) {
  case 'O':
    testname="Offline Immediate ";
    if (isSupportExecuteOfflineImmediate(&data))
      dotest=OFFLINE_FULL_SCAN;
    else
      cfg->testdata->not_cap_offline=1;
    break;
  case 'C':
    testname="Conveyance Self-";
    if (isSupportConveyanceSelfTest(&data))
      dotest=CONVEYANCE_SELF_TEST;
    else
      cfg->testdata->not_cap_conveyance=1;
    break;
  case 'S':
    testname="Short Self-";
    if (isSupportSelfTest(&data))
      dotest=SHORT_SELF_TEST;
    else
      cfg->testdata->not_cap_short=1;
    break;
  case 'L':
    testname="Long Self-";
    if (isSupportSelfTest(&data))
      dotest=EXTEND_SELF_TEST;
    else
      cfg->testdata->not_cap_long=1;
    break;
  }
  
  // If we can't do the test, exit
  if (dotest<0) {
    PrintOut(LOG_CRIT, "Device: %s, not capable of %sTest\n", name, testname);
    return 1;
  }
  
  // If currently running a self-test, do not interrupt it to start another.
  if (15==(data.self_test_exec_status >> 4)) {
    PrintOut(LOG_INFO, "Device: %s, skip scheduled %sTest; %1d0%% remaining of current Self-Test.\n",
             name, testname, (int)(data.self_test_exec_status & 0x0f));
    return 1;
  }

  // else execute the test, and return status
  if ((retval=smartcommandhandler(fd, IMMEDIATE_OFFLINE, dotest, NULL)))
    PrintOut(LOG_CRIT, "Device: %s, execute %sTest failed.\n", name, testname);
  else
    PrintOut(LOG_INFO, "Device: %s, starting scheduled %sTest.\n", name, testname);
  
  return retval;
}


int ATACheckDevice(cfgfile *cfg){
  int fd,i;
  char *name=cfg->name;
  
  // fix firmware bug if requested
  con->fixfirmwarebug=cfg->fixfirmwarebug;
  con->escalade=cfg->escalade;

  // If user has asked, test the email warning system
  if (cfg->mailwarn && cfg->mailwarn->emailtest)
    MailWarning(cfg, 0, "TEST EMAIL from smartd for device: %s", name);

  // if we can't open device, fail gracefully rather than hard --
  // perhaps the next time around we'll be able to open it.  ATAPI
  // cd/dvd devices will hang awaiting media if O_NONBLOCK is not
  // given (see linux cdrom driver).
  if ((fd=OpenDevice(name, "ATA"))<0){
    MailWarning(cfg, 9, "Device: %s, unable to open device", name);
    return 1;
  }

  // user may have requested (with the -n Directive) to leave the disk
  // alone if it is in idle or sleeping mode.  In this case check the
  // power mode and exit without check if needed
  if (cfg->powermode){
    int dontcheck=0, powermode=ataCheckPowerMode(fd);
    char *mode=NULL;
        
    switch (powermode){
    case -1:
      // SLEEP
      mode="SLEEP";
      if (cfg->powermode>=1)
	dontcheck=1;
      break;
    case 0:
      // STANDBY
      mode="STANDBY";
      if (cfg->powermode>=2)
	dontcheck=1;
      break;
    case 0x80:
      // IDLE
      mode="IDLE";
      if (cfg->powermode>=3)
	dontcheck=1;
      break;
    case 0xff:
      // ACTIVE/IDLE
      break;
    default:
      // UNKNOWN
      PrintOut(LOG_CRIT, "Device: %s, CHECK POWER STATUS returned %d, not ATA compliant, ignoring -n Directive\n",
	       name, powermode);
      cfg->powermode=0;
      break;
    }

    // if we are going to skip a check, return now
    if (dontcheck){
      CloseDevice(fd, name);
      PrintOut(LOG_INFO, "Device: %s, is in %s mode, skipping checks\n", name, mode);
      return 0;
    }    
  }

  // check smart status
  if (cfg->smartcheck){
    int status=ataSmartStatus2(fd);
    if (status==-1){
      PrintOut(LOG_INFO,"Device: %s, not capable of SMART self-check\n",name);
      MailWarning(cfg, 5, "Device: %s, not capable of SMART self-check", name);
    }
    else if (status==1){
      PrintOut(LOG_CRIT, "Device: %s, FAILED SMART self-check. BACK UP DATA NOW!\n", name);
      MailWarning(cfg, 1, "Device: %s, FAILED SMART self-check. BACK UP DATA NOW!", name);
    }
  }
  
  // Check everything that depends upon SMART Data (eg, Attribute values)
  if (cfg->usagefailed || cfg->prefail || cfg->usage || cfg->pending!=DONT_MONITOR_UNC){
    struct ata_smart_values     curval;
    struct ata_smart_thresholds_pvt *thresh=cfg->smartthres;
    
    // Read current attribute values. *drive contains old values and thresholds
    if (ataReadSmartValues(fd,&curval)){
      PrintOut(LOG_CRIT, "Device: %s, failed to read SMART Attribute Data\n", name);
      MailWarning(cfg, 6, "Device: %s, failed to read SMART Attribute Data", name);
    }
    else {
      // look for current or offline pending sectors
      if (cfg->pending != DONT_MONITOR_UNC) {
	int64_t rawval;
	unsigned char currentpending, offlinepending;
	
	TranslatePending(cfg->pending, &currentpending, &offlinepending);
	
	if (currentpending && (rawval=ATAReturnAttributeRawValue(currentpending, &curval))>0) {
	  // Unreadable pending sectors!!
	  PrintOut(LOG_CRIT,   "Device: %s, %"PRId64" Currently unreadable (pending) sectors\n", name, rawval);
	  MailWarning(cfg, 10, "Device: %s, %"PRId64" Currently unreadable (pending) sectors", name, rawval);
	}
	
	if (offlinepending && (rawval=ATAReturnAttributeRawValue(offlinepending, &curval))>0) {
	  // Unreadable offline sectors!!
	  PrintOut(LOG_CRIT,   "Device: %s, %"PRId64" Offline uncorrectable sectors\n", name, rawval);
	  MailWarning(cfg, 11, "Device: %s, %"PRId64" Offline uncorrectable sectors", name, rawval);
	}
      }

      if (cfg->usagefailed || cfg->prefail || cfg->usage) {

	// look for failed usage attributes, or track usage or prefail attributes
	for (i=0; i<NUMBER_ATA_SMART_ATTRIBUTES; i++){
	  int att;
	  changedattribute_t delta;
	  
	  // This block looks for usage attributes that have failed.
	  // Prefail attributes that have failed are returned with a
	  // positive sign. No failure returns 0. Usage attributes<0.
	  if (cfg->usagefailed && ((att=ataCheckAttribute(&curval, thresh, i))<0)){
	    
	    // are we ignoring failures of this attribute?
	    att *= -1;
	    if (!IsAttributeOff(att, &cfg->monitorattflags, 0, MONITOR_FAILUSE, __LINE__)){
	      char attname[64], *loc=attname;
	      
	      // get attribute name & skip white space
	      ataPrintSmartAttribName(loc, att, cfg->attributedefs);
	      while (*loc && *loc==' ') loc++;
	      
	      // warning message
	      PrintOut(LOG_CRIT, "Device: %s, Failed SMART usage Attribute: %s.\n", name, loc);
	      MailWarning(cfg, 2, "Device: %s, Failed SMART usage Attribute: %s.", name, loc);
	    }
	  }
	  
	  // This block tracks usage or prefailure attributes to see if
	  // they are changing.  It also looks for changes in RAW values
	  // if this has been requested by user.
	  if ((cfg->usage || cfg->prefail) && ATACompareValues(&delta, &curval, cfg->smartval, thresh, i, name)){
	    unsigned char id=delta.id;
	    
	    // if the only change is the raw value, and we're not
	    // tracking raw value, then continue loop over attributes
	    if (!delta.sameraw && delta.newval==delta.oldval && !IsAttributeOff(id, &cfg->monitorattflags, 0, MONITOR_RAW, __LINE__))
	      continue;
	    
	    // are we tracking this attribute?
	    if (!IsAttributeOff(id, &cfg->monitorattflags, 0, MONITOR_IGNORE, __LINE__)){
	      char newrawstring[64], oldrawstring[64], attname[64], *loc=attname;
	      
	      // get attribute name, skip spaces
	      ataPrintSmartAttribName(loc, id, cfg->attributedefs);
	      while (*loc && *loc==' ') loc++;
	      
	      // has the user asked for us to print raw values?
	      if (IsAttributeOff(id, &cfg->monitorattflags, 0, MONITOR_RAWPRINT, __LINE__)) {
		// get raw values (as a string) and add to printout
		char rawstring[64];
		ataPrintSmartAttribRawValue(rawstring, curval.vendor_attributes+i, cfg->attributedefs);
		sprintf(newrawstring, " [Raw %s]", rawstring);
		ataPrintSmartAttribRawValue(rawstring, cfg->smartval->vendor_attributes+i, cfg->attributedefs);
		sprintf(oldrawstring, " [Raw %s]", rawstring);
	      }
	      else
		newrawstring[0]=oldrawstring[0]='\0';
	      
	      // prefailure attribute
	      if (cfg->prefail && delta.prefail)
		PrintOut(LOG_INFO, "Device: %s, SMART Prefailure Attribute: %s changed from %d%s to %d%s\n",
			 name, loc, delta.oldval, oldrawstring, delta.newval, newrawstring);
	      
	      // usage attribute
	      if (cfg->usage && !delta.prefail)
		PrintOut(LOG_INFO, "Device: %s, SMART Usage Attribute: %s changed from %d%s to %d%s\n",
			 name, loc, delta.oldval, oldrawstring, delta.newval, newrawstring);
	    }
	  } // endof block tracking usage or prefailure
	} // end of loop over attributes
	
	// Save the new values into *drive for the next time around
	*(cfg->smartval)=curval;
      }
    }
  }
  
  // check if number of selftest errors has increased (note: may also DECREASE)
  if (cfg->selftest)
    CheckSelfTestLogs(cfg, SelfTestErrorCount(fd, name));
  
  // check if number of ATA errors has increased
  if (cfg->errorlog){

    int new,old=cfg->ataerrorcount;

    // new number of errors
    new=ATAErrorCount(fd, name);

    // did command fail?
    if (new<0)
      // lack of PrintOut here is INTENTIONAL
      MailWarning(cfg, 7, "Device: %s, Read SMART Error Log Failed", name);

    // has error count increased?
    if (new>old){
      PrintOut(LOG_CRIT, "Device: %s, ATA error count increased from %d to %d\n",
               name, old, new);
      MailWarning(cfg, 4, "Device: %s, ATA error count increased from %d to %d",
                   name, old, new);
    }
    
    // this last line is probably not needed, count always increases
    if (new>=0)
      cfg->ataerrorcount=new;
  }
  
  // if the user has asked, and device is capable (or we're not yet
  // sure) carry out scheduled self-tests.
  if (cfg->testdata) {
    // long test
    if (!cfg->testdata->not_cap_long && DoTestNow(cfg, 'L')>0)
      DoATASelfTest(fd, cfg, 'L');    
    // short test
    else if (!cfg->testdata->not_cap_short && DoTestNow(cfg, 'S')>0)
      DoATASelfTest(fd, cfg, 'S');
    // conveyance test
    else if (!cfg->testdata->not_cap_conveyance && DoTestNow(cfg, 'C')>0)
      DoATASelfTest(fd, cfg, 'C');
    // offline immediate
    else if (!cfg->testdata->not_cap_offline && DoTestNow(cfg, 'O')>0)
      DoATASelfTest(fd, cfg, 'O');  
  }
  
  // Don't leave device open -- the OS/user may want to access it
  // before the next smartd cycle!
  CloseDevice(fd, name);
  return 0;
}

#define DEF_SCSI_REPORT_TEMPERATURE_DELTA 2
static int scsi_report_temperature_delta = DEF_SCSI_REPORT_TEMPERATURE_DELTA;

int SCSICheckDevice(cfgfile *cfg)
{
    UINT8 asc, ascq;
    UINT8 currenttemp;
    UINT8 triptemp;
    int fd;
    char *name=cfg->name;
    const char *cp;

    // If the user has asked for it, test the email warning system
    if (cfg->mailwarn && cfg->mailwarn->emailtest)
      MailWarning(cfg, 0, "TEST EMAIL from smartd for device: %s", name);

    // if we can't open device, fail gracefully rather than hard --
    // perhaps the next time around we'll be able to open it
    if ((fd=OpenDevice(name, "SCSI"))<0) {
      // Lack of PrintOut() here is intentional!
      MailWarning(cfg, 9, "Device: %s, unable to open device", name);
      return 1;
    }
    currenttemp = 0;
    asc = 0;
    ascq = 0;
    if (! cfg->SuppressReport) {
        if (scsiCheckIE(fd, cfg->SmartPageSupported, cfg->TempPageSupported,
                        &asc, &ascq, &currenttemp, &triptemp)) {
            PrintOut(LOG_INFO, "Device: %s, failed to read SMART values\n",
                      name);
            MailWarning(cfg, 6, "Device: %s, failed to read SMART values", name);
            cfg->SuppressReport = 1;
        }
    }
    if (asc > 0) {
        cp = scsiGetIEString(asc, ascq);
        if (cp) {
            PrintOut(LOG_CRIT, "Device: %s, SMART Failure: %s\n", name, cp);
            MailWarning(cfg, 1,"Device: %s, SMART Failure: %s", name, cp); 
        }
    } else if (debugmode)
        PrintOut(LOG_INFO,"Device: %s, Acceptable asc,ascq: %d,%d\n", 
                 name, (int)asc, (int)ascq);  
  
    if (currenttemp && currenttemp!=255) {
        if (cfg->Temperature) {
            if (abs(((int)currenttemp - (int)cfg->Temperature)) >= 
                scsi_report_temperature_delta) {
                PrintOut(LOG_INFO, "Device: %s, Temperature changed %d Celsius "
                         "to %d Celsius since last report\n", name, 
                         (int)(currenttemp - cfg->Temperature), 
                         (int)currenttemp);
                cfg->Temperature = currenttemp;
            }
        }
        else {
            PrintOut(LOG_INFO, "Device: %s, initial Temperature is %d "
                     "Celsius\n", name, (int)currenttemp);
           if (triptemp)
                PrintOut(LOG_INFO, "    [trip Temperature is %d Celsius]\n",
                         (int)triptemp);
            cfg->Temperature = currenttemp;
            cfg->Temperature = currenttemp;
        }
    }
    
    // check if number of selftest errors has increased (note: may also DECREASE)
    if (cfg->selftest)
      CheckSelfTestLogs(cfg, scsiCountFailedSelfTests(fd, 0));
    
    if (cfg->testdata) {
      // long (extended) background test
      if (!cfg->testdata->not_cap_long && DoTestNow(cfg, 'L')>0)
        DoSCSISelfTest(fd, cfg, 'L');
      // short background test
      else if (!cfg->testdata->not_cap_short && DoTestNow(cfg, 'S')>0)
        DoSCSISelfTest(fd, cfg, 'S');
    }
    CloseDevice(fd, name);
    return 0;
}

// Checks the SMART status of all ATA and SCSI devices
void CheckDevicesOnce(cfgfile **atadevices, cfgfile **scsidevices){
  int i;
  
  for (i=0; i<numdevata; i++) 
    ATACheckDevice(atadevices[i]);
  
  for (i=0; i<numdevscsi; i++)
    SCSICheckDevice(scsidevices[i]);

  return;
}

#if SCSITIMEOUT
// This alarm means that a SCSI USB device was hanging
void AlarmHandler(int signal) {
  longjmp(registerscsienv, 1);
}
#endif

// Does initialization right after fork to daemon mode
void Initialize(time_t *wakeuptime){

  // install goobye message and remove pidfile handler
  atexit(Goodbye);
  
  // write PID file only after installing exit handler
  if (!debugmode)
    WritePidFile();
  
  // install signal handlers.  On Solaris, can't use signal() because
  // it resets the handler to SIG_DFL after each call.  So use sigset()
  // instead.  So SIGNALFN()==signal() or SIGNALFN()==sigset().
  
  // normal and abnormal exit
  if (SIGNALFN(SIGTERM, sighandler)==SIG_IGN)
    SIGNALFN(SIGTERM, SIG_IGN);
  if (SIGNALFN(SIGQUIT, sighandler)==SIG_IGN)
    SIGNALFN(SIGQUIT, SIG_IGN);
  
  // in debug mode, <CONTROL-C> ==> HUP
  if (SIGNALFN(SIGINT, debugmode?HUPhandler:sighandler)==SIG_IGN)
    SIGNALFN(SIGINT, SIG_IGN);
  
  // Catch HUP and USR1
  if (SIGNALFN(SIGHUP, HUPhandler)==SIG_IGN)
    SIGNALFN(SIGHUP, SIG_IGN);
  if (SIGNALFN(SIGUSR1, USR1handler)==SIG_IGN)
    SIGNALFN(SIGUSR1, SIG_IGN);
#ifdef _WIN32
  if (SIGNALFN(SIGUSR2, USR2handler)==SIG_IGN)
    SIGNALFN(SIGUSR2, SIG_IGN);
#endif

  // initialize wakeup time to CURRENT time
  *wakeuptime=time(NULL);
  
  return;
}

#ifdef _WIN32
// Toggle debug mode implemented for native windows only
// (there is no easy way to reopen tty on *nix)
static void ToggleDebugMode()
{
  if (!debugmode) {
    PrintOut(LOG_INFO,"Signal USR2 - enabling debug mode\n");
    if (!daemon_enable_console("smartd [Debug]")) {
      debugmode = 1;
      daemon_signal(SIGINT, HUPhandler);
      PrintOut(LOG_INFO,"smartd debug mode enabled, PID=%d\n", getpid());
    }
    else
      PrintOut(LOG_INFO,"enable console failed\n");
  }
  else if (debugmode == 1) {
    daemon_disable_console();
    debugmode = 0;
    daemon_signal(SIGINT, sighandler);
    PrintOut(LOG_INFO,"Signal USR2 - debug mode disabled\n");
  }
  else
    PrintOut(LOG_INFO,"Signal USR2 - debug mode %d not changed\n", debugmode);
}
#endif

time_t dosleep(time_t wakeuptime){
  time_t timenow=0;
  
  // If past wake-up-time, compute next wake-up-time
  timenow=time(NULL);
  while (wakeuptime<=timenow){
    int intervals=1+(timenow-wakeuptime)/checktime;
    wakeuptime+=intervals*checktime;
  }
  
  // sleep until we catch SIGUSR1 or have completed sleeping
  while (timenow<wakeuptime && !caughtsigUSR1 && !caughtsigHUP && !caughtsigEXIT){
    
    // protect user again system clock being adjusted backwards
    if (wakeuptime>timenow+checktime){
      PrintOut(LOG_CRIT, "System clock time adjusted to the past. Resetting next wakeup time.\n");
      wakeuptime=timenow+checktime;
    }
    
    // Exit sleep when time interval has expired or a signal is received
    sleep(wakeuptime-timenow);

#ifdef _WIN32
    // toggle debug mode?
    if (caughtsigUSR2) {
      ToggleDebugMode();
      caughtsigUSR2 = 0;
    }
#endif

    timenow=time(NULL);
  }
 
  // if we caught a SIGUSR1 then print message and clear signal
  if (caughtsigUSR1){
    PrintOut(LOG_INFO,"Signal USR1 - checking devices now rather than in %d seconds.\n",
             wakeuptime-timenow>0?(int)(wakeuptime-timenow):0);
    caughtsigUSR1=0;
  }
  
  // return adjusted wakeuptime
  return wakeuptime;
}

// Print out a list of valid arguments for the Directive d
void printoutvaliddirectiveargs(int priority, char d) {
  char *s=NULL;

  switch (d) {
  case 'n':
    PrintOut(priority, "never, sleep, standby, idle");
    break;
  case 's':
    PrintOut(priority, "valid_regular_expression");
    break;
  case 'd':
    PrintOut(priority, "ata, scsi, removable, 3ware,N");
    break;
  case 'T':
    PrintOut(priority, "normal, permissive");
    break;
  case 'o':
  case 'S':
    PrintOut(priority, "on, off");
    break;
  case 'l':
    PrintOut(priority, "error, selftest");
    break;
  case 'M':
    PrintOut(priority, "\"once\", \"daily\", \"diminishing\", \"test\", \"exec\"");
    break;
  case 'v':
    if (!(s = create_vendor_attribute_arg_list())) {
      PrintOut(LOG_CRIT,"Insufficient memory to construct argument list\n");
      EXIT(EXIT_NOMEM);
    }
    PrintOut(priority, "\n%s\n", s);
    s=CheckFree(s, __LINE__,filenameandversion);
    break;
  case 'P':
    PrintOut(priority, "use, ignore, show, showall");
    break;
  case 'F':
    PrintOut(priority, "none, samsung, samsung2");
    break;
  }
}

// exits with an error message, or returns integer value of token
int GetInteger(char *arg, char *name, char *token, int lineno, char *configfile, int min, int max){
  char *endptr;
  int val;
  
  // check input range
  if (min<0){
    PrintOut(LOG_CRIT, "min =%d passed to GetInteger() must be >=0\n", min);
    return -1;
  }

  // make sure argument is there
  if (!arg) {
    PrintOut(LOG_CRIT,"File %s line %d (drive %s): Directive: %s takes integer argument from %d to %d.\n",
             configfile, lineno, name, token, min, max);
    return -1;
  }
  
  // get argument value (base 10), check that it's integer, and in-range
  val=strtol(arg,&endptr,10);
  if (*endptr!='\0' || val<min || val>max )  {
    PrintOut(LOG_CRIT,"File %s line %d (drive %s): Directive: %s has argument: %s; needs integer from %d to %d.\n",
             configfile, lineno, name, token, arg, min, max);
    return -1;
  }

  // all is well; return value
  return val;
}

// This function returns 1 if it has correctly parsed one token (and
// any arguments), else zero if no tokens remain.  It returns -1 if an
// error was encountered.
int ParseToken(char *token,cfgfile *cfg){
  char sym;
  char *name=cfg->name;
  int lineno=cfg->lineno;
  char *delim = " \n\t";
  int badarg = 0;
  int missingarg = 0;
  char *arg = NULL;
  int makemail=0;
  maildata *mdat=NULL, tempmail;

  // is the rest of the line a comment
  if (*token=='#')
    return 1;
  
  // is the token not recognized?
  if (*token!='-' || strlen(token)!=2) {
    PrintOut(LOG_CRIT,"File %s line %d (drive %s): unknown Directive: %s\n",
             configfile, lineno, name, token);
    PrintOut(LOG_CRIT, "Run smartd -D to print a list of valid Directives.\n");
    return -1;
  }
  
  // token we will be parsing:
  sym=token[1];

  // create temporary maildata structure.  This means we can postpone
  // allocating space in the data segment until we are sure there are
  // no errors.
  if ('m'==sym || 'M'==sym){
    if (!cfg->mailwarn){
      memset(&tempmail, 0, sizeof(maildata));
      mdat=&tempmail;
      makemail=1;
    }
    else
      mdat=cfg->mailwarn;
  }

  // parse the token and swallow its argument
  switch (sym) {
    int val;

  case 'C':
    // monitor current pending sector count (default 197)
    if ((val=GetInteger(arg=strtok(NULL,delim), name, token, lineno, configfile, 0, 255))<0)
      return -1;
    if (val==CUR_UNC_DEFAULT)
      val=0;
    else if (val==0)
      val=CUR_UNC_DEFAULT;
    // set bottom 8 bits to correct value
    cfg->pending &= 0xff00;
    cfg->pending |= val;
    break;
  case 'U':
    // monitor offline uncorrectable sectors (default 198)
    if ((val=GetInteger(arg=strtok(NULL,delim), name, token, lineno, configfile, 0, 255))<0)
      return -1;
    if (val==OFF_UNC_DEFAULT)
      val=0;
    else if (val==0)
      val=OFF_UNC_DEFAULT;
    // turn off top 8 bits, then set to correct value
    cfg->pending &= 0xff;
    cfg->pending |= (val<<8);
    break;
  case 'T':
    // Set tolerance level for SMART command failures
    if ((arg = strtok(NULL, delim)) == NULL) {
      missingarg = 1;
    } else if (!strcmp(arg, "normal")) {
      // Normal mode: exit on failure of a mandatory S.M.A.R.T. command, but
      // not on failure of an optional S.M.A.R.T. command.
      // This is the default so we don't need to actually do anything here.
      cfg->permissive=0;
    } else if (!strcmp(arg, "permissive")) {
      // Permissive mode; ignore errors from Mandatory SMART commands
      cfg->permissive=1;
    } else {
      badarg = 1;
    }
    break;
  case 'd':
    // specify the device type
    if ((arg = strtok(NULL, delim)) == NULL) {
      missingarg = 1;
    } else if (!strcmp(arg, "ata")) {
      cfg->tryata  = 1;
      cfg->tryscsi = 0;
      cfg->escalade =0;
    } else if (!strcmp(arg, "scsi")) {
      cfg->tryscsi = 1;
      cfg->tryata  = 0;
      cfg->escalade =0;
    } else if (!strcmp(arg, "removable")) {
      cfg->removable = 1;
    } else {
      // look 3ware,N RAID device
      int i;
      char *s;
      
      // make a copy of the string to mess with
      if (!(s = strdup(arg))) {
        PrintOut(LOG_CRIT,
                 "No memory to copy argument to -d option - exiting\n");
        EXIT(EXIT_NOMEM);
      } else if (strncmp(s,"3ware,",6)) {
        badarg=1;
      } else if (split_report_arg2(s, &i)){
        PrintOut(LOG_CRIT, "File %s line %d (drive %s): Directive -d 3ware,N requires N integer\n",
                 configfile, lineno, name);
        badarg=1;
      } else if ( i<0 || i>15) {
        PrintOut(LOG_CRIT, "File %s line %d (drive %s): Directive -d 3ware,N (N=%d) must have 0 <= N <= 15\n",
                 configfile, lineno, name, i);
        badarg=1;
      } else {
        // NOTE: escalade = disk number + 1
        cfg->escalade = i+1;
        cfg->tryata  = TRUE;
        cfg->tryscsi = FALSE;
      }
      s=CheckFree(s, __LINE__,filenameandversion); 
    }
    break;
  case 'F':
    // fix firmware bug
    if ((arg = strtok(NULL, delim)) == NULL) {
      missingarg = 1;
    } else if (!strcmp(arg, "none")) {
      cfg->fixfirmwarebug = FIX_NONE;
    } else if (!strcmp(arg, "samsung")) {
      cfg->fixfirmwarebug = FIX_SAMSUNG;
    } else if (!strcmp(arg, "samsung2")) {
      cfg->fixfirmwarebug = FIX_SAMSUNG2;
    } else {
      badarg = 1;
    }
    break;
  case 'H':
    // check SMART status
    cfg->smartcheck=1;
    break;
  case 'f':
    // check for failure of usage attributes
    cfg->usagefailed=1;
    break;
  case 't':
    // track changes in all vendor attributes
    cfg->prefail=1;
    cfg->usage=1;
    break;
  case 'p':
    // track changes in prefail vendor attributes
    cfg->prefail=1;
    break;
  case 'u':
    //  track changes in usage vendor attributes
    cfg->usage=1;
    break;
  case 'l':
    // track changes in SMART logs
    if ((arg = strtok(NULL, delim)) == NULL) {
      missingarg = 1;
    } else if (!strcmp(arg, "selftest")) {
      // track changes in self-test log
      cfg->selftest=1;
    } else if (!strcmp(arg, "error")) {
      // track changes in ATA error log
      cfg->errorlog=1;
    } else {
      badarg = 1;
    }
    break;
  case 'a':
    // monitor everything
    cfg->smartcheck=1;
    cfg->prefail=1;
    cfg->usagefailed=1;
    cfg->usage=1;
    cfg->selftest=1;
    cfg->errorlog=1;
    break;
  case 'o':
    // automatic offline testing enable/disable
    if ((arg = strtok(NULL, delim)) == NULL) {
      missingarg = 1;
    } else if (!strcmp(arg, "on")) {
      cfg->autoofflinetest = 2;
    } else if (!strcmp(arg, "off")) {
      cfg->autoofflinetest = 1;
    } else {
      badarg = 1;
    }
    break;
  case 'n':
    // skip disk check if in idle or standby mode
    if (!(arg = strtok(NULL, delim)))
      missingarg = 1;
    else if (!strcmp(arg, "never"))
      cfg->powermode = 0;
    else if (!strcmp(arg, "sleep"))
      cfg->powermode = 1;
    else if (!strcmp(arg, "standby"))
      cfg->powermode = 2;
    else if (!strcmp(arg, "idle"))
      cfg->powermode = 3;
    else
      badarg = 1;
    break;
  case 'S':
    // automatic attribute autosave enable/disable
    if ((arg = strtok(NULL, delim)) == NULL) {
      missingarg = 1;
    } else if (!strcmp(arg, "on")) {
      cfg->autosave = 2;
    } else if (!strcmp(arg, "off")) {
      cfg->autosave = 1;
    } else {
      badarg = 1;
    }
    break;
  case 's':
    // warn user, and delete any previously given -s REGEXP Directives
    if (cfg->testdata){
      PrintOut(LOG_INFO, "File %s line %d (drive %s): ignoring previous Test Directive -s %s\n",
               configfile, lineno, name, cfg->testdata->regex);
      cfg->testdata=FreeTestData(cfg->testdata);
    }
    
    // check for missing argument
    if (!(arg = strtok(NULL, delim))) {
      missingarg = 1;
    } 
    // allocate space for structure and string
    else if (!(cfg->testdata=(testinfo *)Calloc(1, sizeof(testinfo))) || !(cfg->testdata->regex=CustomStrDup(arg, 1, __LINE__,filenameandversion))) {
      PrintOut(LOG_INFO, "File %s line %d (drive %s): no memory to create Test Directive -s %s!\n",
               configfile, lineno, name, arg);
      EXIT(EXIT_NOMEM);
    }
    else if ((val=regcomp(&(cfg->testdata->cregex), arg, REG_EXTENDED))) {
      char errormsg[512];
      // not a valid regular expression!
      regerror(val, &(cfg->testdata->cregex), errormsg, 512);
      PrintOut(LOG_CRIT, "File %s line %d (drive %s): -s argument \"%s\" is INVALID extended regular expression. %s.\n",
               configfile, lineno, name, arg, errormsg);
      cfg->testdata=FreeTestData(cfg->testdata);
      return -1;
    }
    break;
  case 'm':
    // send email to address that follows
    if (!(arg = strtok(NULL,delim)))
      missingarg = 1;
    else {
      if (mdat->address) {
        PrintOut(LOG_INFO, "File %s line %d (drive %s): ignoring previous Address Directive -m %s\n",
                 configfile, lineno, name, mdat->address);
        mdat->address=FreeNonZero(mdat->address, -1,__LINE__,filenameandversion);
      }
      mdat->address=CustomStrDup(arg, 1, __LINE__,filenameandversion);
    }
    break;
  case 'M':
    // email warning options
    if (!(arg = strtok(NULL, delim)))
      missingarg = 1;
    else if (!strcmp(arg, "once"))
      mdat->emailfreq = 1;
    else if (!strcmp(arg, "daily"))
      mdat->emailfreq = 2;
    else if (!strcmp(arg, "diminishing"))
      mdat->emailfreq = 3;
    else if (!strcmp(arg, "test"))
      mdat->emailtest = 1;
    else if (!strcmp(arg, "exec")) {
      // Get the next argument (the command line)
      if (!(arg = strtok(NULL, delim))) {
        PrintOut(LOG_CRIT, "File %s line %d (drive %s): Directive %s 'exec' argument must be followed by executable path.\n",
                 configfile, lineno, name, token);
        return -1;
      }
      // Free the last cmd line given if any, and copy new one
      if (mdat->emailcmdline) {
        PrintOut(LOG_INFO, "File %s line %d (drive %s): ignoring previous mail Directive -M exec %s\n",
                 configfile, lineno, name, mdat->emailcmdline);
        mdat->emailcmdline=FreeNonZero(mdat->emailcmdline, -1,__LINE__,filenameandversion);
      }
      mdat->emailcmdline=CustomStrDup(arg, 1, __LINE__,filenameandversion);
    } 
    else
      badarg = 1;
    break;
  case 'i':
    // ignore failure of usage attribute
    if ((val=GetInteger(arg=strtok(NULL,delim), name, token, lineno, configfile, 1, 255))<0)
      return -1;
    IsAttributeOff(val, &cfg->monitorattflags, 1, MONITOR_FAILUSE, __LINE__);
    break;
  case 'I':
    // ignore attribute for tracking purposes
    if ((val=GetInteger(arg=strtok(NULL,delim), name, token, lineno, configfile, 1, 255))<0)
      return -1;
    IsAttributeOff(val, &cfg->monitorattflags, 1, MONITOR_IGNORE, __LINE__);
    break;
  case 'r':
    // print raw value when tracking
    if ((val=GetInteger(arg=strtok(NULL,delim), name, token, lineno, configfile, 1, 255))<0)
      return -1;
    IsAttributeOff(val, &cfg->monitorattflags, 1, MONITOR_RAWPRINT, __LINE__);
    break;
  case 'R':
    // track changes in raw value (forces printing of raw value)
    if ((val=GetInteger(arg=strtok(NULL,delim), name, token, lineno, configfile, 1, 255))<0)
      return -1;
    IsAttributeOff(val, &cfg->monitorattflags, 1, MONITOR_RAWPRINT, __LINE__);
    IsAttributeOff(val, &cfg->monitorattflags, 1, MONITOR_RAW, __LINE__);
    break;
  case 'v':
    // non-default vendor-specific attribute meaning
    if (!(arg=strtok(NULL,delim))) {
      missingarg = 1;
    } else if (parse_attribute_def(arg, &cfg->attributedefs)){   
      badarg = 1;
    }
    break;
  case 'P':
    // Define use of drive-specific presets.
    if (!(arg = strtok(NULL, delim))) {
      missingarg = 1;
    } else if (!strcmp(arg, "use")) {
      cfg->ignorepresets = FALSE;
    } else if (!strcmp(arg, "ignore")) {
      cfg->ignorepresets = TRUE;
    } else if (!strcmp(arg, "show")) {
      cfg->showpresets = TRUE;
    } else if (!strcmp(arg, "showall")) {
      showallpresets();
    } else {
      badarg = 1;
    }
    break;
  default:
    // Directive not recognized
    PrintOut(LOG_CRIT,"File %s line %d (drive %s): unknown Directive: %s\n",
             configfile, lineno, name, token);
    Directives();
    return -1;
  }
  if (missingarg) {
    PrintOut(LOG_CRIT, "File %s line %d (drive %s): Missing argument to %s Directive\n",
             configfile, lineno, name, token);
  }
  if (badarg) {
    PrintOut(LOG_CRIT, "File %s line %d (drive %s): Invalid argument to %s Directive: %s\n",
             configfile, lineno, name, token, arg);
  }
  if (missingarg || badarg) {
    PrintOut(LOG_CRIT, "Valid arguments to %s Directive are: ", token);
    printoutvaliddirectiveargs(LOG_CRIT, sym);
    PrintOut(LOG_CRIT, "\n");
    return -1;
  }

  // If this did something to fill the mail structure, and that didn't
  // already exist, create it and copy.
  if (makemail) {
    if (!(cfg->mailwarn=(maildata *)Calloc(1, sizeof(maildata)))) {
      PrintOut(LOG_INFO, "File %s line %d (drive %s): no memory to create mail warning entry!\n",
               configfile, lineno, name);
      EXIT(EXIT_NOMEM);
    }
    memcpy(cfg->mailwarn, mdat, sizeof(maildata));
  }
  
  return 1;
}

// Allocate storage for a new cfgfile entry.  If original!=NULL, it's
// a copy of the original, but with private data storage.  Else all is
// zeroed.  Returns address, and fails if non memory available.

cfgfile *CreateConfigEntry(cfgfile *original){
  cfgfile *add;
  
  // allocate memory for new structure
  if (!(add=(cfgfile *)Calloc(1,sizeof(cfgfile))))
    goto badexit;
  
  // if old structure was pointed to, copy it
  if (original)
    memcpy(add, original, sizeof(cfgfile));
  
  // make private copies of data items ONLY if they are in use (non
  // NULL)
  add->name         = CustomStrDup(add->name,         0, __LINE__,filenameandversion);

  if (add->testdata) {
    int val;
    if (!(add->testdata=(testinfo *)Calloc(1,sizeof(testinfo))))
      goto badexit;
    memcpy(add->testdata, original->testdata, sizeof(testinfo));
    add->testdata->regex = CustomStrDup(add->testdata->regex,   1, __LINE__,filenameandversion);
    // only POSIX-portable way to make fresh copy of compiled regex is
    // to recompile it completely.  There is no POSIX
    // compiled-regex-copy command.
    if ((val=regcomp(&(add->testdata->cregex), add->testdata->regex, REG_EXTENDED))) {
      char errormsg[512];
      regerror(val, &(add->testdata->cregex), errormsg, 512);
      PrintOut(LOG_CRIT, "unable to recompile regular expression %s. %s\n", add->testdata->regex, errormsg);
      goto badexit;
    }
  }
  
  if (add->mailwarn) {
    if (!(add->mailwarn=(maildata *)Calloc(1,sizeof(maildata))))
      goto badexit;
    memcpy(add->mailwarn, original->mailwarn, sizeof(maildata));
    add->mailwarn->address      = CustomStrDup(add->mailwarn->address,      0, __LINE__,filenameandversion);
    add->mailwarn->emailcmdline = CustomStrDup(add->mailwarn->emailcmdline, 0, __LINE__,filenameandversion);
  }

  if (add->attributedefs) {
    if (!(add->attributedefs=(unsigned char *)Calloc(MAX_ATTRIBUTE_NUM,1)))
      goto badexit;
    memcpy(add->attributedefs, original->attributedefs, MAX_ATTRIBUTE_NUM);
  }
  
  if (add->monitorattflags) {
    if (!(add->monitorattflags=(unsigned char *)Calloc(NMONITOR*32, 1)))
      goto badexit;
    memcpy(add->monitorattflags, original->monitorattflags, NMONITOR*32);
  }
  
  if (add->smartval) {
    if (!(add->smartval=(struct ata_smart_values *)Calloc(1,sizeof(struct ata_smart_values))))
      goto badexit;
  }
  
  if (add->smartthres) {
    if (!(add->smartthres=(struct ata_smart_thresholds_pvt *)Calloc(1,sizeof(struct ata_smart_thresholds_pvt))))
      goto badexit;
  }

  return add;

 badexit:
  PrintOut(LOG_CRIT, "No memory to create entry from configuration file\n");
  EXIT(EXIT_NOMEM);
}



// This is the routine that adds things to the cfgentries list. To
// prevent memory leaks when re-reading the configuration file many
// times, this routine MUST deallocate any memory other than that
// pointed to within cfg-> before it returns.
//
// Return values are:
//  1: parsed a normal line
//  0: found comment or blank line
// -1: found SCANDIRECTIVE line
// -2: found an error
//
// Note: this routine modifies *line from the caller!
int ParseConfigLine(int entry, int lineno,char *line){
  char *token=NULL;
  char *name=NULL;
  char *delim = " \n\t";
  cfgfile *cfg=NULL;
  int devscan=0;

  // get first token: device name. If a comment, skip line
  if (!(name=strtok(line,delim)) || *name=='#') {
    return 0;
  }

  // Have we detected the SCANDIRECTIVE directive?
  if (!strcmp(SCANDIRECTIVE,name)){
    devscan=1;
    if (entry) {
      PrintOut(LOG_INFO,"Scan Directive %s (line %d) must be the first entry in %s\n",name, lineno, configfile);
      return -2;
    }
  }
  
  // Is there space for another entry?  If not, allocate more
  while (entry>=cfgentries_max)
    cfgentries=AllocateMoreSpace(cfgentries, &cfgentries_max, "configuration file device");

  // We've got a legit entry, make space to store it
  cfg=cfgentries[entry]=CreateConfigEntry(NULL);
  cfg->name = CustomStrDup(name, 1, __LINE__,filenameandversion);

  // Store line number, and by default check for both device types.
  cfg->lineno=lineno;
  cfg->tryscsi=1;
  cfg->tryata=1;
  
  // Try and recognize if a IDE or SCSI device.  These can be
  // overwritten by configuration file directives.
  if (GUESS_DEVTYPE_ATA == guess_device_type(cfg->name))
    cfg->tryscsi=0;
  else if (GUESS_DEVTYPE_SCSI == guess_device_type(cfg->name))
    cfg->tryata=0;
  /* in "don't know" case leave both tryata and tryscsi set */
  
  // parse tokens one at a time from the file.
  while ((token=strtok(NULL,delim))){
    int retval=ParseToken(token,cfg);
    
    if (retval==0)
      // No tokens left:
      break;
    
    if (retval>0) {
      // Parsed token  
#if (0)
      PrintOut(LOG_INFO,"Parsed token %s\n",token);
#endif
      continue;
    }
    
    if (retval<0) {
      // error found on the line
      return -2;
    }
  }
  
  // If we found 3ware controller, then modify device name by adding a SPACE
  if (cfg->escalade){
    int len=17+strlen(cfg->name);
    char *newname;
    
    if (devscan){
      PrintOut(LOG_CRIT, "smartd: can not scan for 3ware devices (line %d of file %s)\n",
               lineno, configfile);
      return -2;
    }
    
    if (!(newname=(char *)calloc(len,1))) {
      PrintOut(LOG_INFO,"No memory to parse file: %s line %d, %s\n", configfile, lineno, strerror(errno));
      EXIT(EXIT_NOMEM);
    }
    
    // Make new device name by adding a space then RAID disk number
    snprintf(newname, len, "%s [3ware_disk_%02d]", cfg->name, cfg->escalade-1);
    cfg->name=CheckFree(cfg->name, __LINE__,filenameandversion);
    cfg->name=newname;
    bytes+=16;
  }

  // If NO monitoring directives are set, then set all of them.
  if (!(cfg->smartcheck || cfg->usagefailed || cfg->prefail  || 
        cfg->usage      || cfg->selftest    || cfg->errorlog   )){
    
    PrintOut(LOG_INFO,"Drive: %s, implied '-a' Directive on line %d of file %s\n",
             cfg->name, cfg->lineno, configfile);
    
    cfg->smartcheck=1;
    cfg->usagefailed=1;
    cfg->prefail=1;
    cfg->usage=1;
    cfg->selftest=1;
    cfg->errorlog=1;
  }
  
  // additional sanity check. Has user set -M options without -m?
  if (cfg->mailwarn && !cfg->mailwarn->address && (cfg->mailwarn->emailcmdline || cfg->mailwarn->emailfreq || cfg->mailwarn->emailtest)){
    PrintOut(LOG_CRIT,"Drive: %s, -M Directive(s) on line %d of file %s need -m ADDRESS Directive\n",
             cfg->name, cfg->lineno, configfile);
    return -2;
  }
  
  // has the user has set <nomailer>?
  if (cfg->mailwarn && cfg->mailwarn->address && !strcmp(cfg->mailwarn->address,"<nomailer>")){
    // check that -M exec is also set
    if (!cfg->mailwarn->emailcmdline){
      PrintOut(LOG_CRIT,"Drive: %s, -m <nomailer> Directive on line %d of file %s needs -M exec Directive\n",
               cfg->name, cfg->lineno, configfile);
      return -2;
    }
    // now free memory.  From here on the sign of <nomailer> is
    // address==NULL and cfg->emailcmdline!=NULL
    cfg->mailwarn->address=FreeNonZero(cfg->mailwarn->address, -1,__LINE__,filenameandversion);
  }

  // set cfg->emailfreq to 1 (once) if user hasn't set it
  if (cfg->mailwarn && !cfg->mailwarn->emailfreq)
    cfg->mailwarn->emailfreq = 1;

  entry++;

  if (devscan)
    return -1;
  else
    return 1;
}

// clean up utility for ParseConfigFile()
void cleanup(FILE **fpp){
  if (*fpp){
    if (*fpp != stdin)
      fclose(*fpp);
    *fpp=NULL;
  }

  return;
}


// Parses a configuration file.  Return values are:
//  N=>0: found N entries
// -1:    syntax error in config file
// -2:    config file does not exist
// -3:    config file exists but cannot be read
//
// In the case where the return value is 0, there are three
// possiblities:
// Empty configuration file ==> cfgentries==NULL
// No configuration file    ==> cfgentries[0]->lineno == 0
// SCANDIRECTIVE found      ==> cfgentries[0]->lineno != 0
int ParseConfigFile(){
  FILE *fp=NULL;
  int entry=0,lineno=1,cont=0,contlineno=0;
  char line[MAXLINELEN+2];
  char fullline[MAXCONTLINE+1];

  // Open config file, if it exists and is not <stdin>
  if (configfile != configfile_stdin) {
    fp=fopen(configfile,"r");
    if (fp==NULL && (errno!=ENOENT || configfile_alt)) {
      // file exists but we can't read it or it should exist due to '-c' option
      int ret = (errno!=ENOENT ? -3 : -2);
      PrintOut(LOG_CRIT,"%s: Unable to open configuration file %s\n",
               strerror(errno),configfile);
      return ret;
    }
  }
  else // read from stdin ('-c -' option)
    fp = stdin;
  
  // No configuration file found -- use fake one
  if (fp==NULL) {
    int len=strlen(SCANDIRECTIVE)+4;
    char *fakeconfig=(char *)calloc(len,1);
  
    if (!fakeconfig || 
        (len-1) != snprintf(fakeconfig, len, "%s -a", SCANDIRECTIVE) ||
        -1 != ParseConfigLine(entry, 0, fakeconfig)
        ) {
      PrintOut(LOG_CRIT,"Internal error in ParseConfigFile() at line %d of file %s\n%s", 
               __LINE__, filenameandversion, reportbug);
      EXIT(EXIT_BADCODE);
    }
    fakeconfig=CheckFree(fakeconfig, __LINE__,filenameandversion);
    return 0;
  }
    
  // configuration file exists
  PrintOut(LOG_INFO,"Opened configuration file %s\n",configfile);

  // parse config file line by line
  while (1) {
    int len=0,scandevice;
    char *lastslash;
    char *comment;
    char *code;

    // make debugging simpler
    memset(line,0,sizeof(line));

    // get a line
    code=fgets(line,MAXLINELEN+2,fp);
    
    // are we at the end of the file?
    if (!code){
      if (cont) {
        scandevice=ParseConfigLine(entry,contlineno,fullline);
        // See if we found a SCANDIRECTIVE directive
        if (scandevice==-1) {
          cleanup(&fp);
          return 0;
        }
        // did we find a syntax error
        if (scandevice==-2) {
          cleanup(&fp);
          return -1;
        }
        // the final line is part of a continuation line
        cont=0;
        entry+=scandevice;
      }
      break;
    }

    // input file line number
    contlineno++;
    
    // See if line is too long
    len=strlen(line);
    if (len>MAXLINELEN){
      char *warn;
      if (line[len-1]=='\n')
        warn="(including newline!) ";
      else
        warn="";
      PrintOut(LOG_CRIT,"Error: line %d of file %s %sis more than MAXLINELEN=%d characters.\n",
               (int)contlineno,configfile,warn,(int)MAXLINELEN);
      cleanup(&fp);
      return -1;
    }

    // Ignore anything after comment symbol
    if ((comment=strchr(line,'#'))){
      *comment='\0';
      len=strlen(line);
    }

    // is the total line (made of all continuation lines) too long?
    if (cont+len>MAXCONTLINE){
      PrintOut(LOG_CRIT,"Error: continued line %d (actual line %d) of file %s is more than MAXCONTLINE=%d characters.\n",
               lineno, (int)contlineno, configfile, (int)MAXCONTLINE);
      cleanup(&fp);
      return -1;
    }
    
    // copy string so far into fullline, and increment length
    strcpy(fullline+cont,line);
    cont+=len;

    // is this a continuation line.  If so, replace \ by space and look at next line
    if ( (lastslash=strrchr(line,'\\')) && !strtok(lastslash+1," \n\t")){
      *(fullline+(cont-len)+(lastslash-line))=' ';
      continue;
    }

    // Not a continuation line. Parse it
    scandevice=ParseConfigLine(entry,contlineno,fullline);

    // did we find a scandevice directive?
    if (scandevice==-1) {
      cleanup(&fp);
      return 0;
    }
    // did we find a syntax error
    if (scandevice==-2) {
      cleanup(&fp);
      return -1;
    }

    entry+=scandevice;
    lineno++;
    cont=0;
  }
  cleanup(&fp);
  
  // note -- may be zero if syntax of file OK, but no valid entries!
  return entry;
}


// Prints copyright, license and version information
void PrintCopyleft(void){
  debugmode=1;
  PrintHead();
  PrintCVS();
  return;
}

/* Prints the message "=======> VALID ARGUMENTS ARE: <LIST>  <=======\n", where
   <LIST> is the list of valid arguments for option opt. */
void PrintValidArgs(char opt) {
  const char *s;

  PrintOut(LOG_CRIT, "=======> VALID ARGUMENTS ARE: ");
  if (!(s = GetValidArgList(opt)))
    PrintOut(LOG_CRIT, "Error constructing argument list for option %c", opt);
  else
    PrintOut(LOG_CRIT, (char *)s);
  PrintOut(LOG_CRIT, " <=======\n");
}

// Parses input line, prints usage message and
// version/license/copyright messages
void ParseOpts(int argc, char **argv){
  extern char *optarg;
  extern int  optopt, optind, opterr;
  int optchar;
  int badarg;
  char *tailptr;
  long lchecktime;
  // Please update GetValidArgList() if you edit shortopts
  const char *shortopts = "c:l:q:dDi:p:r:Vh?";
#ifdef HAVE_GETOPT_LONG
  char *arg;
  // Please update GetValidArgList() if you edit longopts
  struct option longopts[] = {
    { "configfile",     required_argument, 0, 'c' },
    { "logfacility",    required_argument, 0, 'l' },
    { "quit",           required_argument, 0, 'q' },
    { "debug",          no_argument,       0, 'd' },
    { "showdirectives", no_argument,       0, 'D' },
    { "interval",       required_argument, 0, 'i' },
    { "pidfile",        required_argument, 0, 'p' },
    { "report",         required_argument, 0, 'r' },
    { "version",        no_argument,       0, 'V' },
    { "license",        no_argument,       0, 'V' },
    { "copyright",      no_argument,       0, 'V' },
    { "help",           no_argument,       0, 'h' },
    { "usage",          no_argument,       0, 'h' },
    { 0,                0,                 0, 0   }
  };
#endif
  
  opterr=optopt=0;
  badarg=FALSE;
  
  // Parse input options.  This horrible construction is so that emacs
  // indents properly.  Sorry.
  while (-1 != (optchar = 
#ifdef HAVE_GETOPT_LONG
                getopt_long(argc, argv, shortopts, longopts, NULL)
#else
                getopt(argc, argv, shortopts)
#endif
                )) {
    
    switch(optchar) {
    case 'q':
      // when to quit
      if (!(strcmp(optarg,"nodev"))) {
        quit=0;
      } else if (!(strcmp(optarg,"nodevstartup"))) {
        quit=1;
      } else if (!(strcmp(optarg,"never"))) {
        quit=2;
      } else if (!(strcmp(optarg,"onecheck"))) {
        quit=3;
        debugmode=1;
      } else if (!(strcmp(optarg,"errors"))) {
        quit=4;
      } else {
        badarg = TRUE;
      }
      break;
    case 'l':
      // set the log facility level
      if (!strcmp(optarg, "daemon"))
        facility=LOG_DAEMON;
      else if (!strcmp(optarg, "local0"))
        facility=LOG_LOCAL0;
      else if (!strcmp(optarg, "local1"))
        facility=LOG_LOCAL1;
      else if (!strcmp(optarg, "local2"))
        facility=LOG_LOCAL2;
      else if (!strcmp(optarg, "local3"))
        facility=LOG_LOCAL3;
      else if (!strcmp(optarg, "local4"))
        facility=LOG_LOCAL4;
      else if (!strcmp(optarg, "local5"))
        facility=LOG_LOCAL5;
      else if (!strcmp(optarg, "local6"))
        facility=LOG_LOCAL6;
      else if (!strcmp(optarg, "local7"))
        facility=LOG_LOCAL7;
      else
        badarg = TRUE;
      break;
    case 'd':
      // enable debug mode
      debugmode = TRUE;
      break;
    case 'D':
      // print summary of all valid directives
      debugmode = TRUE;
      Directives();
      EXIT(0);
      break;
    case 'i':
      // Period (time interval) for checking
      // strtol will set errno in the event of overflow, so we'll check it.
      errno = 0;
      lchecktime = strtol(optarg, &tailptr, 10);
      if (*tailptr != '\0' || lchecktime < 10 || lchecktime > INT_MAX || errno) {
        debugmode=1;
        PrintHead();
        PrintOut(LOG_CRIT, "======> INVALID INTERVAL: %s <=======\n", optarg);
        PrintOut(LOG_CRIT, "======> INTERVAL MUST BE INTEGER BETWEEN %d AND %d <=======\n", 10, INT_MAX);
        PrintOut(LOG_CRIT, "\nUse smartd -h to get a usage summary\n\n");
        EXIT(EXIT_BADCMD);
      }
      checktime = (int)lchecktime;
      break;
    case 'r':
      // report IOCTL transactions
      {
        int i;
        char *s;

        // split_report_arg() may modify its first argument string, so use a
        // copy of optarg in case we want optarg for an error message.
        if (!(s = strdup(optarg))) {
          PrintOut(LOG_CRIT, "No memory to process -r option - exiting\n");
          EXIT(EXIT_NOMEM);
        }
        if (split_report_arg(s, &i)) {
          badarg = TRUE;
        } else if (i<1 || i>3) {
          debugmode=1;
          PrintHead();
          PrintOut(LOG_CRIT, "======> INVALID REPORT LEVEL: %s <=======\n", optarg);
          PrintOut(LOG_CRIT, "======> LEVEL MUST BE INTEGER BETWEEN 1 AND 3<=======\n");
          EXIT(EXIT_BADCMD);
        } else if (!strcmp(s,"ioctl")) {
          con->reportataioctl  = con->reportscsiioctl = i;
        } else if (!strcmp(s,"ataioctl")) {
          con->reportataioctl = i;
        } else if (!strcmp(s,"scsiioctl")) {
          con->reportscsiioctl = i;
        } else {
          badarg = TRUE;
        }
        s=CheckFree(s, __LINE__,filenameandversion);
      }
      break;
    case 'c':
      // alternate configuration file
      if (strcmp(optarg,"-"))
        configfile=configfile_alt=CustomStrDup(optarg, 1, __LINE__,filenameandversion);
      else // read from stdin
        configfile=configfile_stdin;
      break;
    case 'p':
      // output file with PID number
      pid_file=CustomStrDup(optarg, 1, __LINE__,filenameandversion);
      break;
    case 'V':
      // print version and CVS info
      PrintCopyleft();
      EXIT(0);
      break;
    case 'h':
      // help: print summary of command-line options
      debugmode=1;
      PrintHead();
      Usage();
      EXIT(0);
      break;
    case '?':
    default:
      // unrecognized option
      debugmode=1;
      PrintHead();
#ifdef HAVE_GETOPT_LONG
      // Point arg to the argument in which this option was found.
      arg = argv[optind-1];
      // Check whether the option is a long option that doesn't map to -h.
      if (arg[1] == '-' && optchar != 'h') {
        // Iff optopt holds a valid option then argument must be missing.
        if (optopt && (strchr(shortopts, optopt) != NULL)) {
          PrintOut(LOG_CRIT, "=======> ARGUMENT REQUIRED FOR OPTION: %s <=======\n",arg+2);
          PrintValidArgs(optopt);
        } else {
          PrintOut(LOG_CRIT, "=======> UNRECOGNIZED OPTION: %s <=======\n\n",arg+2);
        }
        PrintOut(LOG_CRIT, "\nUse smartd --help to get a usage summary\n\n");
        EXIT(EXIT_BADCMD);
      }
#endif
      if (optopt) {
        // Iff optopt holds a valid option then argument must be missing.
        if (strchr(shortopts, optopt) != NULL){
          PrintOut(LOG_CRIT, "=======> ARGUMENT REQUIRED FOR OPTION: %c <=======\n",optopt);
          PrintValidArgs(optopt);
        } else {
          PrintOut(LOG_CRIT, "=======> UNRECOGNIZED OPTION: %c <=======\n\n",optopt);
        }
        PrintOut(LOG_CRIT, "\nUse smartd -h to get a usage summary\n\n");
        EXIT(EXIT_BADCMD);
      }
      Usage();
      EXIT(0);
    }

    // Check to see if option had an unrecognized or incorrect argument.
    if (badarg) {
      debugmode=1;
      PrintHead();
      // It would be nice to print the actual option name given by the user
      // here, but we just print the short form.  Please fix this if you know
      // a clean way to do it.
      PrintOut(LOG_CRIT, "=======> INVALID ARGUMENT TO -%c: %s <======= \n", optchar, optarg);
      PrintValidArgs(optchar);
      PrintOut(LOG_CRIT, "\nUse smartd -h to get a usage summary\n\n");
      EXIT(EXIT_BADCMD);
    }
  }

  // non-option arguments are not allowed
  if (argc > optind) {
    debugmode=1;
    PrintHead();
    PrintOut(LOG_CRIT, "=======> UNRECOGNIZED ARGUMENT: %s <=======\n\n", argv[optind]);
    PrintOut(LOG_CRIT, "\nUse smartd -h to get a usage summary\n\n");
    EXIT(EXIT_BADCMD);
  }

  // no pidfile in debug mode
  if (debugmode && pid_file) {
    debugmode=1;
    PrintHead();
    PrintOut(LOG_CRIT, "=======> INVALID CHOICE OF OPTIONS: -d and -p <======= \n\n");
    PrintOut(LOG_CRIT, "Error: pid file %s not written in debug (-d) mode\n\n", pid_file);
    pid_file=FreeNonZero(pid_file, -1,__LINE__,filenameandversion);
    EXIT(EXIT_BADCMD);
  }
  
  // print header
  PrintHead();
  
  return;
}

// Function we call if no configuration file was found or if the
// SCANDIRECTIVE Directive was found.  It makes entries for device
// names returned by make_device_names() in os_OSNAME.c
int MakeConfigEntries(const char *type, int start){
  int i;
  int num;
  char** devlist = NULL;
  cfgfile *first=cfgentries[0],*cfg=first;

  // make list of devices
  if ((num=make_device_names(&devlist,type))<0)
    PrintOut(LOG_CRIT,"Problem creating device name scan list\n");
  
  // if no devices, or error constructing list, return
  if (num<=0)
    return 0;
  
  // loop over entries to create
  for (i=0; i<num; i++){
    
    // make storage and copy for all but first entry
    if (start+i) {
      // allocate more storage if needed
      while (cfgentries_max<=start+i)
        cfgentries=AllocateMoreSpace(cfgentries, &cfgentries_max, "simulated configuration file device");
      cfg=cfgentries[start+i]=CreateConfigEntry(first);
    }

    // ATA or SCSI?
    cfg->tryata = !strcmp(type,"ATA");
    cfg->tryscsi= !strcmp(type,"SCSI");
    
    // remove device name, if it's there, and put in correct one
    cfg->name=FreeNonZero(cfg->name, -1,__LINE__,filenameandversion);
    // save pointer to the device name created within
    // make_device_names
    cfg->name=devlist[i];
  }
  
  // If needed, free memory used for devlist: pointers now in
  // cfgentries[]->names.  If num==0 we never get to this point, but
  // that's OK.  If we realloc()d the array length in
  // make_device_names() that was ALREADY equivalent to calling
  // free().
  devlist = FreeNonZero(devlist,(sizeof (char*) * num),__LINE__, filenameandversion);
  
  return num;
}
 
void CanNotRegister(char *name, char *type, int line, int scandirective){
  if (line)
    PrintOut(scandirective?LOG_INFO:LOG_CRIT,
             "Unable to register %s device %s at line %d of file %s\n",
             type, name, line, configfile);
  else
    PrintOut(LOG_INFO,"Unable to register %s device %s\n",
             type, name);
  return;
}

// Returns negative value (see ParseConfigFile()) if config file
// had errors, else number of entries which may be zero or positive. 
// If we found no configuration file, or it contained SCANDIRECTIVE,
// then *scanning is set to 1, else 0.
int ReadOrMakeConfigEntries(int *scanning){
  int entries;
  
  // deallocate any cfgfile data structures in memory
  RmAllConfigEntries();
  
  // parse configuration file configfile (normally /etc/smartd.conf)  
  if ((entries=ParseConfigFile())<0) {
 
    // There was an error reading the configuration file.
    RmAllConfigEntries();
    if (entries == -1)
      PrintOut(LOG_CRIT, "Configuration file %s has fatal syntax errors.\n", configfile);
    return entries;
  }

  // did we find entries or scan?
  *scanning=0;
  
  // no error parsing config file.
  if (entries) {
    // we did not find a SCANDIRECTIVE and did find valid entries
    PrintOut(LOG_INFO, "Configuration file %s parsed.\n", configfile);
  }
  else if (cfgentries && cfgentries[0]) {
    // we found a SCANDIRECTIVE or there was no configuration file so
    // scan.  Configuration file's first entry contains all options
    // that were set
    cfgfile *first=cfgentries[0];
    int doata = first->tryata;
    int doscsi= first->tryscsi;
    
    *scanning=1;
    
    if (first->lineno)
      PrintOut(LOG_INFO,"Configuration file %s was parsed, found %s, scanning devices\n", configfile, SCANDIRECTIVE);
    else
      PrintOut(LOG_INFO,"No configuration file %s found, scanning devices\n", configfile);
    
    // make config list of ATA devices to search for
    if (doata)
      entries+=MakeConfigEntries("ATA", entries);
    // make config list of SCSI devices to search for
    if (doscsi)
      entries+=MakeConfigEntries("SCSI", entries);

    // warn user if scan table found no devices
    if (!entries) {
      PrintOut(LOG_CRIT,"In the system's table of devices NO devices found to scan\n");
      // get rid of fake entry with SCANDIRECTIVE as name
      RmConfigEntry(cfgentries, __LINE__);
    }
  } 
  else
    PrintOut(LOG_CRIT,"Configuration file %s parsed but has no entries (like /dev/hda)\n",configfile);
  
  return entries;
}


// This function tries devices from cfgentries.  Each one that can be
// registered is moved onto the [ata|scsi]devices lists and removed
// from the cfgentries list, else it's memory is deallocated.
void RegisterDevices(int scanning){
  int i;
  
  // start by clearing lists/memory of ALL existing devices
  RmAllDevEntries();
  numdevata=numdevscsi=0;
  
  // Register entries
  for (i=0; i<cfgentries_max ; i++){
    
    cfgfile *ent=cfgentries[i];
    
    // skip any NULL entries (holes)
    if (!ent)
      continue;
    
    // register ATA devices
    if (ent->tryata){
      if (ATADeviceScan(ent))
        CanNotRegister(ent->name, "ATA", ent->lineno, scanning);
      else {
        // move onto the list of ata devices
        cfgentries[i]=NULL;
        while (numdevata>=atadevlist_max)
          atadevlist=AllocateMoreSpace(atadevlist, &atadevlist_max, "ATA device");
        atadevlist[numdevata++]=ent;
      }
    }
    
    // then register SCSI devices
    if (ent->tryscsi){
      int retscsi=0;

#if SCSITIMEOUT
      struct sigaction alarmAction, defaultaction;

      // Set up an alarm handler to catch USB devices that hang on
      // SCSI scanning...
      alarmAction.sa_handler= AlarmHandler;
      alarmAction.sa_flags  = SA_RESTART;
      if (sigaction(SIGALRM, &alarmAction, &defaultaction)) {
        // if we can't set timeout, just scan device
        PrintOut(LOG_CRIT, "Unable to initialize SCSI timeout mechanism.\n");
        retscsi=SCSIDeviceScan(ent);
      }
      else {
        // prepare return point in case of bad SCSI device
        if (setjmp(registerscsienv))
          // SCSI device timed out!
          retscsi=-1;
        else {
        // Set alarm, make SCSI call, reset alarm
          alarm(SCSITIMEOUT);
          retscsi=SCSIDeviceScan(ent);
          alarm(0);
        }
        if (sigaction(SIGALRM, &defaultaction, NULL)){
          PrintOut(LOG_CRIT, "Unable to clear SCSI timeout mechanism.\n");
        }
      }
#else
      retscsi=SCSIDeviceScan(ent);
#endif   

      // Now scan SCSI device...
      if (retscsi){
        if (retscsi<0)
          PrintOut(LOG_CRIT, "Device %s timed out (poorly-implemented USB device?)\n", ent->name);
        CanNotRegister(ent->name, "SCSI", ent->lineno, scanning);
      }
      else {
        // move onto the list of scsi devices
        cfgentries[i]=NULL;
        while (numdevscsi>=scsidevlist_max)
          scsidevlist=AllocateMoreSpace(scsidevlist, &scsidevlist_max, "SCSI device");
        scsidevlist[numdevscsi++]=ent;
      }
    }
    
    // if device is explictly listed and we can't register it, then
    // exit unless the user has specified that the device is removable
    if (cfgentries[i]  && !scanning){
      if (ent->removable || quit==2)
        PrintOut(LOG_INFO, "Device %s not available\n", ent->name);
      else {
        PrintOut(LOG_CRIT, "Unable to register device %s (no Directive -d removable). Exiting.\n", ent->name);
        EXIT(EXIT_BADDEV);
      }
    }
    
    // free up memory if device could not be registered
    RmConfigEntry(cfgentries+i, __LINE__);
  }
  
  return;
}

int main(int argc, char **argv){

  // external control variables for ATA disks
  smartmonctrl control;

  // is it our first pass through?
  int firstpass=1;

  // next time to wake up
  time_t wakeuptime;

#ifdef _WIN32
  // Simulate initd commands in smartd itself
  {
    int status;
    if ((status = daemon_main("smartd", argc, argv)) >= 0)
      // command handled in daemon_main
      return status;
  }
#endif

  // for simplicity, null all global communications variables/lists
  con=&control;
  memset(con,        0,sizeof(control));

  // parse input and print header and usage info if needed
  ParseOpts(argc,argv);
  
  // do we mute printing from ataprint commands?
  con->printing_switchable=0;
  con->dont_print=debugmode?0:1;
  
  // don't exit on bad checksums
  con->checksumfail=0;
  
  // the main loop of the code
  while (1){

    // are we exiting from a signal?
    if (caughtsigEXIT) {
      // are we exiting with SIGTERM?
      int isterm=(caughtsigEXIT==SIGTERM);
      int isquit=(caughtsigEXIT==SIGQUIT);
      int isok=debugmode?isterm || isquit:isterm;
      
      PrintOut(isok?LOG_INFO:LOG_CRIT, "smartd received signal %d: %s\n",
               caughtsigEXIT, strsignal(caughtsigEXIT));
      
      EXIT(isok?0:EXIT_SIGNAL);
    }

    // Should we (re)read the config file?
    if (firstpass || caughtsigHUP){
      int entries, scanning=0;

      if (!firstpass) {
#ifdef __CYGWIN__
        // Workaround for missing SIGQUIT via keyboard on Cygwin
        if (caughtsigHUP==2) {
          // Simulate SIGQUIT if another SIGINT arrives soon
          caughtsigHUP=0;
          sleep(1);
          if (caughtsigHUP==2) {
            caughtsigEXIT=SIGQUIT;
            continue;
          }
          caughtsigHUP=2;
        }
#endif
        PrintOut(LOG_INFO,
                 caughtsigHUP==1?
                 "Signal HUP - rereading configuration file %s\n":
                 "\a\nSignal INT - rereading configuration file %s ("SIGQUIT_KEYNAME" quits)\n\n",
                 configfile);
      }

      // clears cfgentries, (re)reads config file, makes >=0 entries
      entries=ReadOrMakeConfigEntries(&scanning);

      if (entries>=0) {
        // checks devices, then moves onto ata/scsi list or deallocates.
        RegisterDevices(scanning);
      }
      else if (quit==2 || ((quit==0 || quit==1) && !firstpass)) {
        // user has asked to continue on error in configuration file
        if (!firstpass)
          PrintOut(LOG_INFO,"Reusing previous configuration\n");
      }
      else {
        // exit with configuration file error status
        int status = (entries==-3 ? EXIT_READCONF : entries==-2 ? EXIT_NOCONF : EXIT_BADCONF);
        EXIT(status);
      }

      // Log number of devices we are monitoring...
      if (numdevata+numdevscsi || quit==2 || (quit==1 && !firstpass))
        PrintOut(LOG_INFO,"Monitoring %d ATA and %d SCSI devices\n",
                 numdevata, numdevscsi);
      else {
        PrintOut(LOG_INFO,"Unable to monitor any SMART enabled devices. Exiting...\n");
        EXIT(EXIT_NODEV);
      }   
      
      // reset signal
      caughtsigHUP=0;
    }

    // check all devices once
    CheckDevicesOnce(atadevlist, scsidevlist); 
    
    // user has asked us to exit after first check
    if (quit==3) {
      PrintOut(LOG_INFO,"Started with '-q onecheck' option. All devices sucessfully checked once.\n"
               "smartd is exiting (exit status 0)\n");
      EXIT(0);
    }
    
    // fork into background if needed
    if (firstpass && !debugmode)
      DaemonInit();
    
    // set exit and signal handlers, write PID file, set wake-up time
    if (firstpass){
      Initialize(&wakeuptime);
      firstpass=0;
    }
    
    // sleep until next check time, or a signal arrives
    wakeuptime=dosleep(wakeuptime);
  }
}