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#include <fs/types.h>

#include <fs/errno.h>

#include <fs/task.h>

#include <fs/util.h>

#include <fs/maccess.h>

#include "file.h"

#include "dentry.h"

#include "fs.h"

int k_chdir(char *newpath)

{

  declare_buffer(char,pathname,MAXPATHNAME);  

  int createflag=DENTRY_NOCREATE;

  struct dentry *d;

  __pid_t pid;

  int len;

  call_to_fs();

  len=__verify_read_nolen((char*)newpath);

  if ((!len)||(len>MAXPATHNAMELEN)) return_from_fs(-EVERIFY);

  __copy_from_user(pathname,newpath,len+1);

  pid=__get_pid();  

  lock_desctable(pid);

  d=find_dentry_from_ext(cwden_ptr(pid),(char *)pathname,&createflag);

  if (d==NULL) {

    unlock_desctable(pid);

    return_from_fs(-ENOENT);

  }

  unlock_dentry(cwden_ptr(pid));

  /* dovrebbe essere: cwden_ptr(pid)=d; */

  desctable[pid].fd_cwden=d;

  strcpy(cwd_ptr(pid),pathname);

  unlock_desctable(pid);

  return_from_fs(EOK);

}