static long cephwrap_telldir(struct vfs_handle_struct *handle, DIR *dirp)
{
long ret;
DBG_DEBUG("[CEPH] telldir(%p, %p)\n", handle, dirp);
ret = ceph_telldir(handle->data, (struct ceph_dir_result *) dirp);
DBG_DEBUG("[CEPH] telldir(...) = %ld\n", ret);
WRAP_RETURN(ret);
}
/**
* FSAL_readdir :
* Read the entries of an opened directory.
*
* \param descriptor (input):
* Pointer to the directory descriptor filled by FSAL_opendir.
* \param start_position (input):
* Cookie that indicates the first object to be read during
* this readdir operation.
* This should be :
* - FSAL_READDIR_FROM_BEGINNING for reading the content
* of the directory from the beginning.
* - The end_position parameter returned by the previous
* call to FSAL_readdir.
* \param get_attr_mask (input)
* Specify the set of attributes to be retrieved for directory entries.
* \param buffersize (input)
* The size (in bytes) of the buffer where
* the direntries are to be stored.
* \param dirents (output)
* Adress of the buffer where the direntries are to be stored.
* \param end_position (output)
* Cookie that indicates the current position in the directory.
* \param count (output)
* Pointer to the number of entries read during the call.
* \param end_of_dir (output)
* Pointer to a boolean that indicates if the end of dir
* has been reached during the call.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - ERR_FSAL_FAULT (a NULL pointer was passed as mandatory argument)
* - Other error codes can be returned :
* ERR_FSAL_IO, ...
*/
fsal_status_t CEPHFSAL_readdir(fsal_dir_t *extdescriptor,
fsal_op_context_t * p_context, /* IN */
fsal_cookie_t extstart,
fsal_attrib_mask_t attrmask,
fsal_mdsize_t buffersize,
fsal_dirent_t *dirents,
fsal_cookie_t *extend,
fsal_count_t *count,
fsal_boolean_t *end_of_dir)
{
int rc = 0;
fsal_status_t status;
struct dirent de;
cephfsal_dir_t* descriptor = (cephfsal_dir_t*) extdescriptor;
struct ceph_mount_info *cmount = descriptor->ctx.export_context->cmount;
loff_t start = ((cephfsal_cookie_t*) extstart.data)->cookie;
loff_t* end = &((cephfsal_cookie_t*) extend->data)->cookie;
unsigned int max_entries = buffersize / sizeof(fsal_dirent_t);
/* sanity checks */
if(!descriptor || !dirents || !end || !count || !end_of_dir)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_readdir);
*end_of_dir = FALSE;
*count = 0;
TakeTokenFSCall();
(void) ceph_seekdir(cmount, DH(descriptor), start);
while ((*count <= max_entries) && !(*end_of_dir)) {
struct stat st;
memset(&dirents[*count], sizeof(fsal_dirent_t), 0);
memset(&de, sizeof(struct dirent), 0);
memset(&st, sizeof(struct stat), 0);
int stmask = 0;
TakeTokenFSCall();
rc = ceph_readdirplus_r(cmount, DH(descriptor), &de, &st, &stmask);
if (rc < 0) /* Error */
Return(posix2fsal_error(rc), 0, INDEX_FSAL_readdir);
else if (rc == 1) {
/* Got a dirent */
cephfsal_handle_t* entryhandle
= (cephfsal_handle_t*) &(dirents[*count].handle.data);
cephfsal_cookie_t* entrycookie
= (cephfsal_cookie_t*) &(dirents[*count].cookie);
/* skip . and .. */
if(!strcmp(de.d_name, ".") || !strcmp(de.d_name, ".."))
continue;
entryhandle->data.vi.ino.val = st.st_ino;
entryhandle->data.vi.snapid.val = st.st_dev;
status = FSAL_str2name(de.d_name, FSAL_MAX_NAME_LEN,
&(dirents[*count].name));
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_readdir);
entrycookie->data.cookie = ceph_telldir(cmount, DH(descriptor));
dirents[*count].attributes.asked_attributes = attrmask;
status =
posix2fsal_attributes(&st,
&(dirents[*count].attributes));
if(FSAL_IS_ERROR(status)) {
FSAL_CLEAR_MASK(dirents[*count].attributes
.asked_attributes);
FSAL_SET_MASK(dirents[*count].attributes.asked_attributes,
FSAL_ATTR_RDATTR_ERR);
}
if (*count != 0) {
dirents[(*count)-1].nextentry = &(dirents[*count]);
}
(*count)++;
} else if (rc == 0) /* EOF */
*end_of_dir = TRUE;
else{
/* Can't happen */
abort();
}
} /* while */
(*end) = ceph_telldir(cmount, DH(descriptor));
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_readdir);
}
