pr7_zaebalsya

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>

#define LOG_FILE "/user/home/prg.log"

int hup_count = 0;

void sighup_handler(int signum) {
    hup_count++;
    FILE *file = fopen(LOG_FILE, "a");
    if (file == NULL) {
        perror("Error opening file");
        exit(EXIT_FAILURE);
    }
    fprintf(file, "%d\n", hup_count);
    fclose(file);
}

void sigusr1_handler(int signum) {
    FILE *file = fopen(LOG_FILE, "r");
    if (file == NULL) {
        perror("Error opening file");
        exit(EXIT_FAILURE);
    }
    int value;
    while (fscanf(file, "%d", &value) != EOF) {
        printf("%d\n", value);
    }
    fclose(file);
}

void sigterm_handler(int signum) {
    if (remove(LOG_FILE) == -1) {
        perror("Error removing file");
        exit(EXIT_FAILURE);
    }
    exit(EXIT_SUCCESS);
}

int main() {
    signal(SIGHUP, sighup_handler);
    signal(SIGUSR1, sigusr1_handler);
    signal(SIGTERM, sigterm_handler);
    while (1) {
        sleep(1);
    }
    return 0;
}