Changeset bba3d90 in mainline

Timestamp:

2011-06-27T16:51:18Z (13 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

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

Children:

db9aa04

Parents:

5dfb1948

Message:

Using new directory api to support creating long names

File:

• uspace/srv/fs/fat/fat_ops.c (modified) (4 diffs)

uspace/srv/fs/fat/fat_ops.c

@@ -581 +581 @@
         fat_bs_t *bs;
         block_t *b;
-        unsigned i, j;
-        unsigned blocks;
-        fat_cluster_t mcl, lcl;
+        fat_directory_t di;
+        fat_dentry_t de;
         int rc;
 
@@ -597 +596 @@
         fibril_mutex_unlock(&childp->lock);
 
-        if (!fat_dentry_name_verify(name)) {
-                /*
-                 * Attempt to create unsupported name.
-                 */
+        rc = str_to_wstr(di.wname, FAT_LFN_NAME_SIZE, name);
+        if (rc != EOK)
+                return rc;
+
+        if (!fat_lfn_valid(di.wname))
                 return ENOTSUP;
-        }
-
-        /*
-         * Get us an unused parent node's dentry or grow the parent and allocate
-         * a new one.
-         */
 
         fibril_mutex_lock(&parentp->idx->lock);
         bs = block_bb_get(parentp->idx->devmap_handle);
-
-        blocks = parentp->size / BPS(bs);
-
-        for (i = 0; i < blocks; i++) {
-                rc = fat_block_get(&b, bs, parentp, i, BLOCK_FLAGS_NONE);
-                if (rc != EOK) {
-                        fibril_mutex_unlock(&parentp->idx->lock);
-                        return rc;
-                }
-                for (j = 0; j < DPS(bs); j++) {
-                        d = ((fat_dentry_t *)b->data) + j;
-                        switch (fat_classify_dentry(d)) {
-                        case FAT_DENTRY_LFN:
-                        case FAT_DENTRY_SKIP:
-                        case FAT_DENTRY_VALID:
-                                /* skipping used and meta entries */
-                                continue;
-                        case FAT_DENTRY_FREE:
-                        case FAT_DENTRY_LAST:
-                                /* found an empty slot */
-                                goto hit;
-                        }
-                }
-                rc = block_put(b);
-                if (rc != EOK) {
-                        fibril_mutex_unlock(&parentp->idx->lock);
-                        return rc;
-                }
-        }
-        j = 0;
-
-        /*
-         * We need to grow the parent in order to create a new unused dentry.
-         */
-        if (!FAT_IS_FAT32(bs) && parentp->firstc == FAT_CLST_ROOT) {
-                /* Can't grow the root directory. */
-                fibril_mutex_unlock(&parentp->idx->lock);
-                return ENOSPC;
-        }
-        rc = fat_alloc_clusters(bs, parentp->idx->devmap_handle, 1, &mcl, &lcl);
-        if (rc != EOK) {
-                fibril_mutex_unlock(&parentp->idx->lock);
-                return rc;
-        }
-        rc = fat_zero_cluster(bs, parentp->idx->devmap_handle, mcl);
-        if (rc != EOK) {
-                (void) fat_free_clusters(bs, parentp->idx->devmap_handle, mcl);
-                fibril_mutex_unlock(&parentp->idx->lock);
-                return rc;
-        }
-        rc = fat_append_clusters(bs, parentp, mcl, lcl);
-        if (rc != EOK) {
-                (void) fat_free_clusters(bs, parentp->idx->devmap_handle, mcl);
-                fibril_mutex_unlock(&parentp->idx->lock);
-                return rc;
-        }
-        parentp->size += BPS(bs) * SPC(bs);
-        parentp->dirty = true;          /* need to sync node */
-        rc = fat_block_get(&b, bs, parentp, i, BLOCK_FLAGS_NONE);
-        if (rc != EOK) {
-                fibril_mutex_unlock(&parentp->idx->lock);
-                return rc;
-        }
-        d = (fat_dentry_t *)b->data;
-
-hit:
+        fat_directory_open(parentp, &di);
+
         /*
          * At this point we only establish the link between the parent and the
@@ -683 +613 @@
          * dentry data is kept in the child node structure.
          */
-        memset(d, 0, sizeof(fat_dentry_t));
-        fat_dentry_name_set(d, name);
-        b->dirty = true;                /* need to sync block */
-        rc = block_put(b);
+        memset(&de, 0, sizeof(fat_dentry_t));
+
+        rc = fat_directory_write(&di, name, &de);
+        if (rc!=EOK)
+                return rc;
+        rc = fat_directory_close(&di);
+        if (rc!=EOK)
+                return rc;
+
         fibril_mutex_unlock(&parentp->idx->lock);
         if (rc != EOK)
@@ -741 +676 @@
 
         childp->idx->pfc = parentp->firstc;
-        childp->idx->pdi = i * DPS(bs) + j;
+        childp->idx->pdi = di.pos;      /* di.pos holds absolute position of SFN entry */
         fibril_mutex_unlock(&childp->idx->lock);