select: Interrupted system call

unsigned int Timer ()
{
int seconds=1;
struct itimerval old, new;
new.it_interval.tv_usec = 0;
new.it_interval.tv_sec = 0;
new.it_value.tv_usec = 0;
new.it_value.tv_sec = (long int) seconds;
 
if (setitimer (ITIMER_REAL, &new, &old) < 0)
return 0;
else
return old.it_value.tv_sec;
 
}
/////////////////Copy function
void LogTraceCopy()
{
FILE *fileLogCopy, *fileTraceCopy;
char Def[500];
char Mailto[500];
int Trace, result;
char TraceD[500];
char TraceDRe[500];
Correct(Def, &Level2, Mailto);
TraceDef(TraceD, &Trace);
char reltime[100];
time_t rawtime;
struct tm * timeinfo;
time ( &rawtime );
timeinfo = localtime ( &rawtime );
strcpy(reltime,TraceD);
strcat(reltime, "-");
strcat(reltime, asctime(timeinfo));
strcat(reltime, ".log");
/////////////////////////////////
strcpy(TraceDRe, TraceD);
strcat(TraceDRe, "-");
strcat(TraceDRe, asctime(timeinfo));
strcat(TraceDRe, ".trace");
strcat(TraceD, ".trace");
if(Trace==1)
{
rename(Def, reltime);
rename(TraceD, TraceDRe);
fileLogCopy=fopen(Def, "a");
result=pclose(fileLogCopy);
fileTraceCopy=fopen(TraceD, "a");
result=pclose(fileTraceCopy);
printf("Trace: %s", TraceD);
 
}
else if(rename(Def, reltime)==0 )
{
fileLogCopy=fopen(Def, "a");
result=pclose(fileLogCopy);
 
}
memset(TraceD,'\0',500);
memset(Def,'\0',500);
memset(Mailto,'\0',500);
memset(TraceDRe,'\0',500);
Timer();
}
Main.c:
int main()
............///
 
Timer();
signal(SIGALRM, LogTraceCopy);
...../////////

void handler(int signo){
  got_alarm = 1;
}
 
while (1) {
  ...
  if (got_alarm) {
    handle_alarm();
    got_alarm = 0;
  }
  n = select(...);
  if (n < 1) {
    if (n == -1) {
      if (errno == EINTR) continue;
      handle_fatal();
    }
    handle_timeout();
  }
  ...
}

#include <err.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
 
void
handler(int sig)
{
        (void)sig;
        (void)write(0, "alarm\n", 6);
}
 
int
main()
{
        struct sigaction act;
        struct itimerval itv;
 
        memset(&act, '\0', sizeof(act));
        act.sa_handler = handler;
        if (sigaction(SIGALRM, &act, NULL) == -1)
                err(1, "sigaction");
 
        memset(&itv, '\0', sizeof(itv));
        itv.it_interval.tv_sec = 1;
        itv.it_value.tv_sec = 1;
        if (setitimer(ITIMER_REAL, &itv, NULL) == -1)
                err(1, "setitimer");
 
        while (1)
                sleep(5);
}