| The corresponding value contains a ptr to a buffer of said size. The buffer specified by the source process must have read permission.
+
| The corresponding value contains a ptr to a buffer of said size. The buffer specified by the source process must have read permission. Used for input buffers.
|-
|-
| 0x0000000C <nowiki>|</nowiki> (size<<4)
| 0x0000000C <nowiki>|</nowiki> (size<<4)
<ptr>
<ptr>
−
| The corresponding value contains a ptr to a buffer of said size. The buffer specified by the source process must have write permission.
+
| The corresponding value contains a ptr to a buffer of said size. The buffer specified by the source process must have write permission. Used for output buffers. In the destination process with the buffer mapped at 0x04000000+, that buffer has same content as the buffer from the source buffer(like descriptor 0x0000000A).