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Rev 3660 Rev 3700
Line 387... Line 387...
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    block_t *b;
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    block_t *b;
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    int i, j;
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    int i, j;
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    uint16_t bps;
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    uint16_t bps;
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    unsigned dps;
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    unsigned dps;
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    unsigned blocks;
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    unsigned blocks;
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    fat_cluster_t mcl, lcl;
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    int rc;
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    futex_down(&childp->lock);
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    futex_down(&childp->lock);
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    if (childp->lnkcnt == 1) {
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    if (childp->lnkcnt == 1) {
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        /*
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        /*
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         * On FAT, we don't support multiple hard links.
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         * On FAT, we don't support multiple hard links.
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    }
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    }
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    /*
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    /*
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     * We need to grow the parent in order to create a new unused dentry.
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     * We need to grow the parent in order to create a new unused dentry.
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     */
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     */
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    if (parentp->idx->pfc == FAT_CLST_ROOT) {
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        /* Can't grow the root directory. */
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    futex_up(&parentp->idx->lock);
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        futex_up(&parentp->idx->lock);
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    return ENOTSUP; /* XXX */
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        return ENOSPC;
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    }
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    rc = fat_alloc_clusters(bs, parentp->idx->dev_handle, 1, &mcl, &lcl);
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    if (rc != EOK) {
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        futex_up(&parentp->idx->lock);
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        return rc;
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    }
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    fat_append_clusters(bs, parentp, mcl);
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    b = fat_block_get(bs, parentp, i, BLOCK_FLAGS_NOREAD);
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    d = (fat_dentry_t *)b->data;
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    /*
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     * Clear all dentries in the block except for the first one (the first
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     * dentry will be cleared in the next step).
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     */
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    memset(d + 1, 0, bps - sizeof(fat_dentry_t));
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hit:
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hit:
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    /*
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    /*
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     * At this point we only establish the link between the parent and the
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     * At this point we only establish the link between the parent and the
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     * child.  The dentry, except of the name and the extension, will remain
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     * child.  The dentry, except of the name and the extension, will remain
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     * uninitialized until the the corresponding node is synced. Thus the
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     * uninitialized until the corresponding node is synced. Thus the valid
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     * valid dentry data is kept in the child node structure.
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     * dentry data is kept in the child node structure.
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     */
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     */
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    memset(d, 0, sizeof(fat_dentry_t));
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    memset(d, 0, sizeof(fat_dentry_t));
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    fat_dentry_name_set(d, name);
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    fat_dentry_name_set(d, name);
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    b->dirty = true;        /* need to sync block */
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    b->dirty = true;        /* need to sync block */
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    block_put(b);
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    block_put(b);