tipaiC

#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <string.h>
#include <ftw.h>

int fileInfo(const char *p, const struct stat *st, int fl, struct FTW *fbuf);
int openFile(const char *p);
int closeFile(int fd);

int openFile(const char *p)
{
        int dskr;
        dskr = open( p, O_RDONLY, 0);
        if( dskr == -1 ){
        perror( p );
        exit(1);
        }
        return dskr;
}

int closeFile(int fd)
{
        int rv;
        rv = close( fd );
        if( rv != 0 ) perror ( "close() failed" );

        return rv;
}

int checkIfScript(int dskr)
{
        char * buff;
        char toC[15];
        memcpy(toC, "PIR", 3);

        buff = mmap(NULL, 256, PROT_READ, MAP_PRIVATE, dskr, 0);
        int ret;
        ret = memcmp(buff, toC, 3);
        if(ret == 0) return 1;

        return 0;
}
int fileInfo(const char *p, const struct stat *st, int fl, struct FTW *fbuf)
{
        if(fl == FTW_D)
        {
                printf(p);
                printf(" yra katalogas\n");
        }
        if(fl == FTW_F)
        {
                printf(p);
                printf(" yra failas\n");
                int d = -1;
                d = openFile(p);
                int s = -1;
                s = checkIfScript(d);
                if(s == 1)
                {
                        printf("Tai pat ir skriptas\n");
                        printf((st->st_mode & S_IWGRP) ? "Faila gali modifikuoti kiti\n" : " ");
                        printf((st->st_mode & S_IWOTH) ? "Faila gali modifikuoti kiti\n" : " ");
                }
                closeFile(d);
        }
        if(fl == FTW_SL)
        {
                printf(p);
                printf(" yra simboline nuoroda\n");
        }

        return 0;
}

int main(int argc, char * argv[])
{
        if( argc != 2 )
        {
                printf("Netinkamas argumentu skaicius\n");
                exit(255);
        }

        int rv = -1;
        rv = nftw(argv[1], fileInfo, 20, 0);
        if(rv == -1)
        {
                perror("nftw failed");
                exit(255);
        }
        if(rv != 0)
        {
                printf("finished");
        }
        return 0;
}