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binder: fix sender_euid type in uapi header

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The {pid,uid}_t fields of struct binder_transaction were recently
replaced to use kernel types in commit 169adc2b6b ("android/binder.h:
add linux/android/binder(fs).h to UAPI compile-test coverage").

However, using __kernel_uid_t here breaks backwards compatibility in
architectures using 16-bits for this type, since glibc and some others
still expect a 32-bit uid_t. Instead, let's use __kernel_uid32_t which
avoids this compatibility problem.

Fixes: 169adc2b6b ("android/binder.h: add linux/android/binder(fs).h to UAPI compile-test coverage")
Reported-by: Christopher Ferris <cferris@google.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Carlos Llamas 2022-06-01 01:00:17 +00:00 committed by Arnd Bergmann
parent 3cbcff6911
commit 8cc5b03224
1 changed files with 1 additions and 1 deletions
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2
include/uapi/linux/android/binder.h
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@ -289,7 +289,7 @@ struct binder_transaction_data {
/* General information about the transaction. */
__u32 flags;
__kernel_pid_t sender_pid;
__kernel_uid_t sender_euid;
__kernel_uid32_t sender_euid;
binder_size_t data_size; /* number of bytes of data */
binder_size_t offsets_size; /* number of bytes of offsets */