Changeset 3faa03d in mainline for uspace/lib/label/src/label.c

Timestamp:

2015-07-02T16:30:16Z (9 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1626cd4

Parents:

78d50bd

Message:

Liblabel reading GPT and MBR partitions (primary only).

File:

• uspace/lib/label/src/label.c (modified) (5 diffs)

uspace/lib/label/src/label.c

@@ -40 +40 @@
 #include <stdlib.h>
 
+#include "gpt.h"
+
+static label_ops_t *probe_list[] = {
+        &gpt_label_ops,
+        NULL
+};
+
 int label_open(service_id_t sid, label_t **rlabel)
 {
-        label_t *label;
+        label_ops_t **ops;
+        int rc;
 
-        label = calloc(1, sizeof(label_t));
-        if (label == NULL)
-                return ENOMEM;
+        ops = &probe_list[0];
+        while (ops[0] != NULL) {
+                rc = ops[0]->open(sid, rlabel);
+                if (rc == EOK)
+                        return EOK;
+                ++ops;
+        }
 
-        list_initialize(&label->parts);
-        *rlabel = label;
-        return EOK;
+        return ENOTSUP;
 }
 
 int label_create(service_id_t sid, label_type_t ltype, label_t **rlabel)
 {
-        label_t *label;
+        label_ops_t *ops = NULL;
 
-        label = calloc(1, sizeof(label_t));
-        if (label == NULL)
-                return ENOMEM;
+        switch (ltype) {
+        case lt_gpt:
+                ops = &gpt_label_ops;
+                break;
+        case lt_mbr:
+                ops = NULL;
+                break;
+        }
 
-        list_initialize(&label->parts);
-        *rlabel = label;
-        return EOK;
+        if (ops == NULL)
+                return ENOTSUP;
+
+        return ops->create(sid, rlabel);
 }
 
@@ -71 +87 @@
                 return;
 
-        free(label);
+        label->ops->close(label);
 }
 
 int label_destroy(label_t *label)
 {
-        free(label);
-        return EOK;
+        return label->ops->destroy(label);
 }
 
@@ -83 +98 @@
 {
         memset(linfo, 0, sizeof(label_info_t));
-        linfo->dcnt = dc_empty;
+        linfo->dcnt = dc_label;
+        linfo->ltype = label->ltype;
         return EOK;
 }
@@ -89 +105 @@
 label_part_t *label_part_first(label_t *label)
 {
-        link_t *link;
-
-        link = list_first(&label->parts);
-        if (link == NULL)
-                return NULL;
-
-        return list_get_instance(link, label_part_t, llabel);
+        return label->ops->part_first(label);
 }
 
 label_part_t *label_part_next(label_part_t *part)
 {
-        link_t *link;
-
-        link = list_next(&part->llabel, &part->label->parts);
-        if (link == NULL)
-                return NULL;
-
-        return list_get_instance(link, label_part_t, llabel);
+        return part->label->ops->part_next(part);
 }
 
 void label_part_get_info(label_part_t *part, label_part_info_t *pinfo)
 {
-        pinfo->block0 = 0;
-        pinfo->nblocks = 0;
+        return part->label->ops->part_get_info(part, pinfo);
 }
 
@@ -118 +121 @@
     label_part_t **rpart)
 {
-        label_part_t *part;
-
-        part = calloc(1, sizeof(label_part_t));
-        if (part == NULL)
-                return ENOMEM;
-
-        part->label = label;
-        list_append(&part->llabel, &label->parts);
-        *rpart = part;
-        return EOK;
+        return label->ops->part_create(label, pspec, rpart);
 }
 
 int label_part_destroy(label_part_t *part)
 {
-        list_remove(&part->llabel);
-        free(part);
-        return EOK;
+        return part->label->ops->part_destroy(part);
 }