Hi,
I wanna traverse inside the file system by using threads and processes.My program has to assume the first parameter is either given as "-p" which offers a multi-process application or "-t" which runs in a multi-threaded way. The second parameter is the pathname of a file or directory. If my program gets the path of a file, it should print out the size of the file in bytes. If my program gets the path of a directory, it should, in the same way, print out the directory name, then process all the entries in the directory except the directory itself and the parent directory. If my program is given a directory, it must display the entire hierarchy rooted at the specified directory. I wrote something but I got stuck in.I can not improve my code.Please help me.
My code is as following:
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
int funcThread(DIR *D);
int main(int argc, char * argv[]) { pthread_t thread[100]; DIR *dirPointer; struct stat object_file; struct dirent *object_dir; int counter;
if(opendir(argv[1])==NULL)
{
printf("\n\nERROR !\n\n Please enter -p or -t \n\n");
return 0;
}
if((dirPointer=opendir(argv[1]))=="-t")
{
if ((object_dir = opendir(argv[2])) == NULL)
{
printf("\n\nERROR !\n\nPlease enter the third argument\n\n");
return 0;.
}
else
{
counter=0;
while ((object_dir = readdir(object_dir)) != NULL)
{
pthread_create(&thread[counter],NULL,funcThread,(void *) object_dir);
counter++;
}
}
}
return 0; }
int funcThread(DIR *dPtr) { DIR *ptr; struct stat oFile; struct dirent *oDir; int num;
if(ptr=readdir(dPtr)==NULL)
rewinddir(ptr);
if(S_ISDIR(oFile.st_mode))
{
ptr=readdir(dPtr);
printf("\t%s\n",ptr);
return funcThread(ptr);
}
else
{
while(ptr=readdir(dPtr)!=NULL)
{
printf("\n%s\n",oDir->d_name);
stat(oDir->d_name,&oFile);
printf("\n%f\n",oFile.st_size);
}
rewinddir(ptr);
}
}