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binder: BINDER_GET_FROZEN_INFO ioctl

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User space needs to know if binder transactions occurred to frozen
processes. Introduce a new BINDER_GET_FROZEN ioctl and keep track of
transactions occurring to frozen proceses.

Signed-off-by: Marco Ballesio <balejs@google.com>
Signed-off-by: Li Li <dualli@google.com>
Acked-by: Todd Kjos <tkjos@google.com>
Link: https://lore.kernel.org/r/20210316011630.1121213-4-dualli@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marco Ballesio 2021-03-15 18:16:30 -07:00 • committed by Greg Kroah-Hartman
parent 95c16f9d9c
commit ae28c1be1e
3 changed files with 68 additions and 0 deletions
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7
include/uapi/linux/android/binder.h
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@ -223,6 +223,12 @@ struct binder_freeze_info {
__u32 timeout_ms;
};
struct binder_frozen_status_info {
__u32 pid;
__u32 sync_recv;
__u32 async_recv;
};
#define BINDER_WRITE_READ _IOWR('b', 1, struct binder_write_read)
#define BINDER_SET_IDLE_TIMEOUT _IOW('b', 3, __s64)
#define BINDER_SET_MAX_THREADS _IOW('b', 5, __u32)
@ -234,6 +240,7 @@ struct binder_freeze_info {
#define BINDER_GET_NODE_INFO_FOR_REF _IOWR('b', 12, struct binder_node_info_for_ref)
#define BINDER_SET_CONTEXT_MGR_EXT _IOW('b', 13, struct flat_binder_object)
#define BINDER_FREEZE _IOW('b', 14, struct binder_freeze_info)
#define BINDER_GET_FROZEN_INFO _IOWR('b', 15, struct binder_frozen_status_info)
/*
* NOTE: Two special error codes you should check for when calling