Changeset a81a1d09 in mainline for uspace/lib/c/generic/devman.c

Timestamp:

2011-05-11T16:49:28Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

19387b61

Parents:

e1dbcbc (diff), 9212f8a (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge development/ changes

File:

• uspace/lib/c/generic/devman.c (modified) (1 diff)

uspace/lib/c/generic/devman.c

@@ -374 +374 @@
 }
 
+int devman_get_device_path(devman_handle_t handle, char *path, size_t path_size)
+{
+        int phone = devman_get_phone(DEVMAN_CLIENT, 0);
+
+        if (phone < 0)
+                return phone;
+
+        async_serialize_start();
+
+        ipc_call_t answer;
+        aid_t req = async_send_1(phone, DEVMAN_DEVICE_GET_DEVICE_PATH,
+            handle, &answer);
+
+        ipc_call_t data_request_call;
+        aid_t data_request = async_data_read(phone, path, path_size,
+            &data_request_call);
+        if (data_request == 0) {
+                async_wait_for(req, NULL);
+                async_serialize_end();
+                return ENOMEM;
+        }
+
+        sysarg_t data_request_rc;
+        sysarg_t opening_request_rc;
+        async_wait_for(data_request, &data_request_rc);
+        async_wait_for(req, &opening_request_rc);
+
+        async_serialize_end();
+
+        if (data_request_rc != EOK) {
+                /* Prefer the return code of the opening request. */
+                if (opening_request_rc != EOK) {
+                        return (int) opening_request_rc;
+                } else {
+                        return (int) data_request_rc;
+                }
+        }
+        if (opening_request_rc != EOK) {
+                return (int) opening_request_rc;
+        }
+
+        path[path_size - 1] = 0;
+
+        if (IPC_GET_ARG2(data_request_call) >= path_size) {
+                return ELIMIT;
+        }
+
+        return EOK;
+}
+
 
 /** @}