Changeset 7473807 in mainline for kernel/generic/src/ipc/ops/dataread.c

Timestamp:

2018-05-11T20:22:42Z (7 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

d2c5159

Parents:

ae89656

Message:

Use atomic malloc allocations

We can safely use atomic allocations in places that use the non-failing
version of malloc(), but test the return value anyway. And also in some
places that can afford to return failure but did not because of comfort.

File:

• kernel/generic/src/ipc/ops/dataread.c (modified) (2 diffs)

kernel/generic/src/ipc/ops/dataread.c

@@ -75 +75 @@
                         IPC_SET_ARG1(answer->data, dst);
 
-                        answer->buffer = malloc(size, 0);
+                        answer->buffer = malloc(size, FRAME_ATOMIC);
+                        if (!answer->buffer) {
+                                IPC_SET_RETVAL(answer->data, ENOMEM);
+                                return EOK;
+                        }
                         errno_t rc = copy_from_uspace(answer->buffer,
                             (void *) src, size);
@@ -84 +88 @@
                                  * ipc_call_free().
                                  */
+                                return EOK;
                         }
                 } else if (!size) {