Myfnd

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#include <string.h>
#include <time.h>

#define N_ARG 3
#define N 128
#define BUF_LIMIT 512

#define ec_neg(s,m) \
if( (s) < 0 ) {perror(m); exit(errno);}
#define ec_null(s,m) \
if( (s) == NULL ) {perror(m); exit(errno);}
#define ec_args(s,m) \
if( (s) != N_ARG) {printf(m); usage(); exit(ECANCELED);}
#define ERREAD(s) \
{printf("Couldn't read this directory\n");}

static char* s_path;
static int f_flag=0;

void usage(){
    printf("Syntax : myfnd dir fname\n");
    printf("Searches into dir the file named fname\n");
    printf("and prints its absolute path and the date\n");
    printf("of its last modification.\n");
}

void fnd(char* path, char* name){

    DIR* dd;
    struct dirent* ff;
    struct stat fileStat;
    char buf[BUF_LIMIT];

    ec_null((getcwd(buf,N)),"Couldn't get the current working directory");
    ec_neg((chdir(path)),"Couldn't change the working directory");
    ec_null((dd=opendir(".")),"Couldn't open this directory");
    while((errno = 0, ff = readdir(dd))!=NULL){
        if(strcmp(ff->d_name,name)==0){
            printf("%s/%s/%s\t\t%s\n",s_path,path,name,(asctime(localtime(&fileStat.st_mtime))));
            f_flag=1;
        }
        ec_neg(stat(ff->d_name,&fileStat),"Couldn't read info for this file\n");
        if(S_ISDIR(fileStat.st_mode)&&(strcmp(ff->d_name,"..")!=0)&&(strcmp(ff->d_name,".")!=0)) fnd(ff->d_name,name);
    }
    if (errno!=0) ERREAD(errno)
    ec_neg((closedir(dd)),"Couldn't close this directory");
    ec_neg((chdir(buf)),"Couldn't return into the previous working directory");
}

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

    ec_args(argc,"Wrong arguments number\n");
    s_path = argv[1];

    fnd(argv[1],argv[2]);

    if(!f_flag) printf("File not found\n");

    return 0;
}