Commit 656e01f3 authored by Todd Kjos's avatar Todd Kjos Committed by Greg Kroah-Hartman
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binder: read pre-translated fds from sender buffer 



This patch is to prepare for an up coming patch where we read
pre-translated fds from the sender buffer and translate them before
copying them to the target.  It does not change run time.

The patch adds two new parameters to binder_translate_fd_array() to
hold the sender buffer and sender buffer parent.  These parameters let
us call copy_from_user() directly from the sender instead of using
binder_alloc_copy_from_buffer() to copy from the target.  Also the patch
adds some new alignment checks.  Previously the alignment checks would
have been done in a different place, but this lets us print more
useful error messages.

Reviewed-by: default avatarMartijn Coenen <maco@android.com>
Acked-by: default avatarChristian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: default avatarTodd Kjos <tkjos@google.com>
Link: https://lore.kernel.org/r/20211130185152.437403-4-tkjos@google.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6d98eb95
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