/* Inherit some attributes from existing component */
new->llc_stripe_size = comp->llc_stripe_size;
new->llc_stripe_count = comp->llc_stripe_count;
+ if (comp->llc_pool_name[0] != '\0')
+ strncpy(new->llc_pool_name, comp->llc_pool_name,
+ sizeof(comp->llc_pool_name));
if (new->llc_extent.e_end <= last->llc_extent.e_end) {
__llapi_comp_free(new);
errno = EINVAL;
* \retval =0 : moved successfully
* \retval <0 if error occurs
*/
-int llapi_layout_comp_move_at(struct llapi_layout *layout, uint32_t id)
+int llapi_layout_comp_use_id(struct llapi_layout *layout, uint32_t comp_id)
{
struct llapi_layout_comp *comp;
comp = __llapi_layout_cur_comp(layout);
if (comp == NULL)
- return -1;
+ return -1; /* use previously set errno */
if (!layout->llot_is_composite) {
errno = EINVAL;
return -1;
}
- if (id == 0) {
+ if (comp_id == LCME_ID_INVAL) {
errno = EINVAL;
return -1;
}
list_for_each_entry(comp, &layout->llot_comp_list, llc_list) {
- if (comp->llc_id == id) {
+ if (comp->llc_id == comp_id) {
layout->llot_cur_comp = comp;
return 0;
}
*
* \param[in] layout composite layout
* \param[in] pos the position to be moved, it can be:
- * LLAPI_LAYOUT_COMP_POS_FIRST: move to head
- * LLAPI_LAYOUT_COMP_POS_LAST: move to tail
- * LLAPI_LAYOUT_COMP_POS_NEXT: move to next
+ * LLAPI_LAYOUT_COMP_USE_FIRST: use first component
+ * LLAPI_LAYOUT_COMP_USE_LAST: use last component
+ * LLAPI_LAYOUT_COMP_USE_NEXT: use component after current
+ * LLAPI_LAYOUT_COMP_USE_PREV: use component before current
*
* \retval =0 : moved successfully
- * \retval =1 : already at the tail when move to the next
+ * \retval =1 : at last component with NEXT, at first component with PREV
* \retval <0 if error occurs
*/
-int llapi_layout_comp_move(struct llapi_layout *layout, uint32_t pos)
+int llapi_layout_comp_use(struct llapi_layout *layout,
+ enum llapi_layout_comp_use pos)
{
struct llapi_layout_comp *comp, *head, *tail;
return -1;
}
- head = list_entry(layout->llot_comp_list.next, typeof(*head),
- llc_list);
- tail = list_entry(layout->llot_comp_list.prev, typeof(*tail),
- llc_list);
-
- if (pos == LLAPI_LAYOUT_COMP_POS_NEXT) {
- if (comp == tail)
+ head = list_entry(layout->llot_comp_list.next, typeof(*head), llc_list);
+ tail = list_entry(layout->llot_comp_list.prev, typeof(*tail), llc_list);
+ switch (pos) {
+ case LLAPI_LAYOUT_COMP_USE_FIRST:
+ layout->llot_cur_comp = head;
+ break;
+ case LLAPI_LAYOUT_COMP_USE_NEXT:
+ if (comp == tail) {
+ errno = ENOENT;
return 1;
+ }
layout->llot_cur_comp = list_entry(comp->llc_list.next,
typeof(*comp), llc_list);
- } else if (pos == LLAPI_LAYOUT_COMP_POS_FIRST) {
- layout->llot_cur_comp = head;
- } else if (pos == LLAPI_LAYOUT_COMP_POS_LAST) {
+ break;
+ case LLAPI_LAYOUT_COMP_USE_LAST:
layout->llot_cur_comp = tail;
- } else {
+ break;
+ case LLAPI_LAYOUT_COMP_USE_PREV:
+ if (comp == head) {
+ errno = ENOENT;
+ return 1;
+ }
+ layout->llot_cur_comp = list_entry(comp->llc_list.prev,
+ typeof(*comp), llc_list);
+ break;
+ default:
errno = EINVAL;
return -1;
}
}
/**
- * Delete component(s) by the specified component id (accepting lcme_id
- * wildcards also) from an existing file.
+ * Delete component(s) by the specified component id or component flags
+ * from an existing file.
*
* \param[in] path path name of the file
- * \param[in] id unique component ID or an lcme_id
- * (LCME_ID_NONE | LCME_FL_* )
+ * \param[in] id unique component ID
+ * \param[in] flags flags: LCME_FL_* or;
+ * negative flags: (LCME_FL_NEG|LCME_FL_*)
*/
-int llapi_layout_file_comp_del(const char *path, uint32_t id)
+int llapi_layout_file_comp_del(const char *path, uint32_t id, uint32_t flags)
{
- int rc, fd;
+ int rc, fd, lum_size;
+ struct llapi_layout *layout;
+ struct llapi_layout_comp *comp;
+ struct lov_user_md *lum;
- if (path == NULL || id == 0) {
+ if (path == NULL || id > LCME_ID_MAX || (flags & ~LCME_KNOWN_FLAGS)) {
errno = EINVAL;
return -1;
}
- fd = open(path, O_RDWR);
- if (fd < 0)
+ /* Can only specify ID or flags, not both. */
+ if (id != 0 && flags != 0) {
+ errno = EINVAL;
return -1;
+ }
- rc = fsetxattr(fd, XATTR_LUSTRE_LOV".del", &id, sizeof(id), 0);
+ layout = llapi_layout_alloc();
+ if (layout == NULL)
+ return -1;
+
+ llapi_layout_comp_extent_set(layout, 0, LUSTRE_EOF);
+ comp = __llapi_layout_cur_comp(layout);
+ comp->llc_id = id;
+ comp->llc_flags = flags;
+
+ lum = llapi_layout_to_lum(layout);
+ if (lum == NULL) {
+ llapi_layout_free(layout);
+ return -1;
+ }
+ lum_size = ((struct lov_comp_md_v1 *)lum)->lcm_size;
+
+ fd = open(path, O_RDWR);
+ if (fd < 0) {
+ rc = -1;
+ goto out;
+ }
+
+ rc = fsetxattr(fd, XATTR_LUSTRE_LOV".del", lum, lum_size, 0);
if (rc < 0) {
int tmp_errno = errno;
close(fd);
errno = tmp_errno;
- return -1;
+ rc = -1;
+ goto out;
}
close(fd);
- return 0;
+out:
+ free(lum);
+ llapi_layout_free(layout);
+ return rc;
}
/**
git://git.whamcloud.com / fs / lustre-release.git / blobdiff