Changeset 6d57e1c in mainline for uspace/srv/fs/exfat/exfat_ops.c

Timestamp:

2011-06-27T19:39:06Z (14 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

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

Children:

620a367

Parents:

efa8ed93

Message:

exFAT:

1. Structure for BootSector
2. Skeleton for mount/umount ops

File:

• uspace/srv/fs/exfat/exfat_ops.c (modified) (1 diff)

uspace/srv/fs/exfat/exfat_ops.c

@@ -56 +56 @@
 #include <malloc.h>
 
+/** libfs operations */
+
+libfs_ops_t exfat_libfs_ops;
+/*
+libfs_ops_t exfat_libfs_ops = {
+        .root_get = exfat_root_get,
+        .match = exfat_match,
+        .node_get = exfat_node_get,
+        .node_open = exfat_node_open,
+        .node_put = exfat_node_put,
+        .create = exfat_create_node,
+        .destroy = exfat_destroy_node,
+        .link = exfat_link,
+        .unlink = exfat_unlink,
+        .has_children = exfat_has_children,
+        .index_get = exfat_index_get,
+        .size_get = exfat_size_get,
+        .lnkcnt_get = exfat_lnkcnt_get,
+        .plb_get_char = exfat_plb_get_char,
+        .is_directory = exfat_is_directory,
+        .is_file = exfat_is_file,
+        .device_get = exfat_device_get
+};
+*/
+
+/*
+ * VFS operations.
+ */
+
+void exfat_mounted(ipc_callid_t rid, ipc_call_t *request)
+{
+        devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request);
+        enum cache_mode cmode;
+        exfat_bs_t *bs;
+
+        /* Accept the mount options */
+        char *opts;
+        int rc = async_data_write_accept((void **) &opts, true, 0, 0, 0, NULL);
+
+        if (rc != EOK) {
+                async_answer_0(rid, rc);
+                return;
+        }
+
+        /* Check for option enabling write through. */
+        if (str_cmp(opts, "wtcache") == 0)
+                cmode = CACHE_MODE_WT;
+        else
+                cmode = CACHE_MODE_WB;
+
+        free(opts);
+
+        /* initialize libblock */
+        rc = block_init(devmap_handle, BS_SIZE);
+        if (rc != EOK) {
+                async_answer_0(rid, rc);
+                return;
+        }
+
+        /* prepare the boot block */
+        rc = block_bb_read(devmap_handle, BS_BLOCK);
+        if (rc != EOK) {
+                block_fini(devmap_handle);
+                async_answer_0(rid, rc);
+                return;
+        }
+
+        /* get the buffer with the boot sector */
+        bs = block_bb_get(devmap_handle);
+        
+        (void) bs;
+
+        /* Initialize the block cache */
+        rc = block_cache_init(devmap_handle, BS_SIZE, 0 /* XXX */, cmode);
+        if (rc != EOK) {
+                block_fini(devmap_handle);
+                async_answer_0(rid, rc);
+                return;
+        }
+
+        async_answer_0(rid, EOK);
+/*      async_answer_3(rid, EOK, ridxp->index, rootp->size, rootp->lnkcnt); */
+}
+
+void exfat_mount(ipc_callid_t rid, ipc_call_t *request)
+{
+        libfs_mount(&exfat_libfs_ops, exfat_reg.fs_handle, rid, request);
+}
+
+void exfat_unmounted(ipc_callid_t rid, ipc_call_t *request)
+{
+        devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request);
+
+        /*
+         * Perform cleanup of the node structures, index structures and
+         * associated data. Write back this file system's dirty blocks and
+         * stop using libblock for this instance.
+         */
+        (void) block_cache_fini(devmap_handle);
+        block_fini(devmap_handle);
+
+        async_answer_0(rid, EOK);
+}
+
+void exfat_unmount(ipc_callid_t rid, ipc_call_t *request)
+{
+        libfs_unmount(&exfat_libfs_ops, rid, request);
+}