int ext2_dirnext_r (struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat)
{
ext2_log_trace("dirState %p, filename %p, filestat %p\n", dirState, filename, filestat);
if(!dirState)
{
r->_errno = EINVAL;
return -1;
}
ext2_dir_state* dir = STATE(dirState);
ext2_inode_t *ni = NULL;
// Sanity check
if (!dir || !dir->vd || !dir->ni) {
r->_errno = EBADF;
return -1;
}
// Lock
ext2Lock(dir->vd);
// Check that there is a entry waiting to be fetched
if (!dir->current) {
ext2Unlock(dir->vd);
r->_errno = ENOENT;
return -1;
}
// Fetch the current entry
strcpy(filename, dir->current->name);
if(filestat != NULL)
{
if(strcmp(dir->current->name, ".") == 0 || strcmp(dir->current->name, "..") == 0)
{
memset(filestat, 0, sizeof(struct stat));
filestat->st_mode = S_IFDIR;
}
else
{
ni = ext2OpenEntry(dir->vd, dir->current->name);
if (ni) {
ext2Stat(dir->vd, ni, filestat);
ext2CloseEntry(dir->vd, ni);
}
}
}
// Move to the next entry in the directory
dir->current = dir->current->next;
// Update directory times
ext2UpdateTimes(dir->vd, dir->ni, EXT2_UPDATE_ATIME);
// Unlock
ext2Unlock(dir->vd);
return 0;
}
int ext2_stat_r (struct _reent *r, const char *path, struct stat *st)
{
// Short circuit cases were we don't actually have to do anything
if (!st || !path)
return 0;
ext2_log_trace("path %s, st %p\n", path, st);
ext2_vd *vd = NULL;
ext2_inode_t *ni = NULL;
// Get the volume descriptor for this path
vd = ext2GetVolume(path);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
if(strcmp(path, ".") == 0 || strcmp(path, "..") == 0)
{
memset(st, 0, sizeof(struct stat));
st->st_mode = S_IFDIR;
return 0;
}
// Lock
ext2Lock(vd);
// Find the entry
ni = ext2OpenEntry(vd, path);
if (!ni) {
r->_errno = errno;
ext2Unlock(vd);
return -1;
}
// Get the entry stats
int ret = ext2Stat(vd, ni, st);
if (ret)
r->_errno = errno;
// Close the entry
ext2CloseEntry(vd, ni);
ext2Unlock(vd);
return 0;
}
int ext2_fstat_r (struct _reent *r, int fd, struct stat *st)
{
ext2_log_trace("fd %p\n", (void *) fd);
ext2_file_state* file = STATE(fd);
int ret = 0;
// Sanity check
if (!file || !file->vd || !file->ni || !file->fd) {
r->_errno = EINVAL;
return -1;
}
// Short circuit cases were we don't actually have to do anything
if (!st)
return 0;
// Get the file stats
ret = ext2Stat(file->vd, file->ni, st);
if (ret)
r->_errno = errno;
return ret;
}
