rmfs.c

#include <stdio.h>
#include <getopt.h>
#include "filesystem.h"

int main(int argc, char *argv[]){
    if(argc != 2) {
        puts("Not valid no of arguments! Check \"./rmfs --help\" for proper use.");
        return INCORRECT_ARG;
    }

    static struct option long_opt[] = {
        {"help",    no_argument,    0,  'h'},
        {0,         0,              0,  0}
    };

    char ch;
    while((ch = getopt_long(argc, argv, "", long_opt, NULL)) != -1) {
        switch(ch){
            case 'h':
                printf("Usage:\n");
                printf("./rmfs --help to show this message\n");
                printf("./rmfs your_filesys_name to remove file system\n");
                return 0;
            case '?':
                break;
        }
    }

    FILE *fp;
    char *name = argv[1];
    if(fp = fopen(name, "r")) {
        fclose(fp);
        remove(name);
        printf("Successfully removed %s!\n", name);
        return 0;
    }
    puts("There's no such file system!");
    return FILE_NOT_EXISTING;
}