From 2f43c68d05913871ada85cec87760bc1049cdfbb Mon Sep 17 00:00:00 2001 From: Yu-Ting Tseng Date: Tue, 9 Jul 2024 00:00:49 -0700 Subject: [PATCH] FROMGIT: binder: frozen notification binder_features flag Add a flag to binder_features to indicate that the freeze notification feature is available. Signed-off-by: Yu-Ting Tseng Acked-by: Carlos Llamas Link: https://lore.kernel.org/r/20240709070047.4055369-6-yutingtseng@google.com Signed-off-by: Greg Kroah-Hartman Bug: 363013421 (cherry picked from commit 30b968b002a92870325a5c9d1ce78eba0ce386e7 git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-next) Change-Id: Ic26c8ae42d27c6fd8f5daed5eecabd1652e29502 Signed-off-by: Carlos Llamas --- drivers/android/binderfs.c | 8 ++++++++ .../selftests/filesystems/binderfs/binderfs_test.c | 1 + 2 files changed, 9 insertions(+) diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c index 09b2ce7e4c34..aa5f37845501 100644 --- a/drivers/android/binderfs.c +++ b/drivers/android/binderfs.c @@ -60,6 +60,7 @@ enum binderfs_stats_mode { struct binder_features { bool oneway_spam_detection; bool extended_error; + bool freeze_notification; }; static const struct constant_table binderfs_param_stats[] = { @@ -76,6 +77,7 @@ static const struct fs_parameter_spec binderfs_fs_parameters[] = { static struct binder_features binder_features = { .oneway_spam_detection = true, .extended_error = true, + .freeze_notification = true, }; static inline struct binderfs_info *BINDERFS_SB(const struct super_block *sb) @@ -610,6 +612,12 @@ static int init_binder_features(struct super_block *sb) if (IS_ERR(dentry)) return PTR_ERR(dentry); + dentry = binderfs_create_file(dir, "freeze_notification", + &binder_features_fops, + &binder_features.freeze_notification); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); + return 0; } diff --git a/tools/testing/selftests/filesystems/binderfs/binderfs_test.c b/tools/testing/selftests/filesystems/binderfs/binderfs_test.c index 5f362c0fd890..319567f0fae1 100644 --- a/tools/testing/selftests/filesystems/binderfs/binderfs_test.c +++ b/tools/testing/selftests/filesystems/binderfs/binderfs_test.c @@ -65,6 +65,7 @@ static int __do_binderfs_test(struct __test_metadata *_metadata) static const char * const binder_features[] = { "oneway_spam_detection", "extended_error", + "freeze_notification", }; change_mountns(_metadata);