Changeset f6bffee in mainline for uspace/lib/c/generic/vfs/vfs.c

Timestamp:

2011-04-06T20:19:04Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

55132b8, b910455

Parents:

b946bf83

Message:

Allow special flags that control processing of IPC_M_DATA_READ/WRITE in
the kernel:

• IPC_XF_NONE: default behavior
• IPC_XF_RESTRICT: restrict the transfer size if necessary

Make read() and write() use IPC_XF_RESTRICT.

File:

• uspace/lib/c/generic/vfs/vfs.c (modified) (2 diffs)

uspace/lib/c/generic/vfs/vfs.c

@@ -378 +378 @@
         
         req = async_send_1(vfs_phone, VFS_IN_READ, fildes, &answer);
-        rc = async_data_read_start(vfs_phone, (void *)buf, nbyte);
+        rc = async_data_read_start_flexible(vfs_phone, (void *) buf, nbyte,
+            IPC_XF_RESTRICT);
         if (rc != EOK) {
                 vfs_exchange_end(vfs_phone);
@@ -407 +408 @@
         
         req = async_send_1(vfs_phone, VFS_IN_WRITE, fildes, &answer);
-        rc = async_data_write_start(vfs_phone, (void *)buf, nbyte);
+        rc = async_data_write_start_flexible(vfs_phone, (void *) buf, nbyte,
+            IPC_XF_RESTRICT);
         if (rc != EOK) {
                 vfs_exchange_end(vfs_phone);