WebSVN – HelenOS – Diff – /trunk/uspace/srv/vfs/vfs_lookup.c

  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 /** @addtogroup fs
  * @{
  */
 /**
- * @file    vfs_lookup.c
+ * @file vfs_lookup.c
  * @brief
  */
 #include "vfs.h"
 #include <ipc/ipc.h>
 #include <bool.h>
 #include <futex.h>
 #include <libadt/list.h>
 #include <vfs/canonify.h>
-#define min(a, b)   ((a) < (b) ? (a) : (b))
+#define min(a, b)  ((a) < (b) ? (a) : (b))
 futex_t plb_futex = FUTEX_INITIALIZER;
-link_t plb_head;    /**< PLB entry ring buffer. */
+link_t plb_head;  /**< PLB entry ring buffer. */
 uint8_t *plb = NULL;
 /** Perform a path lookup.
+ *
- * @param path      Path to be resolved; it must be a NULL-terminated
+ * @param path    Path to be resolved; it must be a NULL-terminated
- *          string.
+ *                string.
- * @param lflag     Flags to be used during lookup.
+ * @param lflag   Flags to be used during lookup.
- * @param result    Empty structure where the lookup result will be stored.
+ * @param result  Empty structure where the lookup result will be stored.
- *          Can be NULL.
+ *                Can be NULL.
- * @param altroot   If non-empty, will be used instead of rootfs as the root
+ * @param altroot If non-empty, will be used instead of rootfs as the root
- *          of the whole VFS tree.
+ *                of the whole VFS tree.
+ *
+ * @return EOK on success or an error code from errno.h.
+ *
- * @return      EOK on success or an error code from errno.h.
  */
 int vfs_lookup_internal(char *path, int lflag, vfs_lookup_res_t *result,
     vfs_pair_t *altroot, ...)
+{
     vfs_pair_t *root;
      */
     memset(&plb[first], 0, cnt1);
     memset(plb, 0, cnt2);
     futex_up(&plb_futex);
-    if ((rc == EOK) && result) {
+    if ((rc == EOK) && (result)) {
         result->triplet.fs_handle = (fs_handle_t) IPC_GET_ARG1(answer);
         result->triplet.dev_handle = (dev_handle_t) IPC_GET_ARG2(answer);
         result->triplet.index = (fs_index_t) IPC_GET_ARG3(answer);
         result->size = (size_t) IPC_GET_ARG4(answer);
         result->lnkcnt = (unsigned) IPC_GET_ARG5(answer);
+    }
     return rc;
+}
+/** Perform a node open operation.
+ *
+ * @return EOK on success or an error code from errno.h.
+ *
+ */
+int vfs_open_node_internal(vfs_lookup_res_t *result)
+{
+    int phone = vfs_grab_phone(result->triplet.fs_handle);
+    ipc_call_t answer;
+    aid_t req = async_send_2(phone, VFS_OPEN_NODE,
+        (ipcarg_t) result->triplet.dev_handle,
+        (ipcarg_t) result->triplet.index, &answer);
+    vfs_release_phone(phone);
+    async_serialize_start();
+    ipcarg_t rc;
+    async_wait_for(req, &rc);
+    async_serialize_end();
+    if (rc == EOK) {
+        result->size = (size_t) IPC_GET_ARG1(answer);
+        result->lnkcnt = (unsigned) IPC_GET_ARG2(answer);
+        if (IPC_GET_ARG3(answer) & L_FILE)
+            result->type = VFS_NODE_FILE;
+        else if (IPC_GET_ARG3(answer) & L_DIRECTORY)
+            result->type = VFS_NODE_DIRECTORY;
+        else
+            result->type = VFS_NODE_UNKNOWN;
+    }
+    return rc;
+}
 /**
  * @}
  */

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/vfs/vfs_lookup.c – Rev 4445 → 4463