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BACKPORT: FROMGIT: binder: frozen notification binder_features flag

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Add a flag to binder_features to indicate that the freeze notification
feature is available.

Signed-off-by: Yu-Ting Tseng <yutingtseng@google.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20240709070047.4055369-6-yutingtseng@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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
[cmllamas: fix trivial conflicts due to missing extended_error]
Signed-off-by: Carlos Llamas <cmllamas@google.com>
This commit is contained in:
Yu-Ting Tseng 2024-07-09 00:00:49 -07:00 • committed by Carlos Llamas
parent d1e87637cd
commit 1063c2fa62
2 changed files with 9 additions and 0 deletions
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8
drivers/android/binderfs.c
View file

@ -61,6 +61,7 @@ enum binderfs_stats_mode {
struct binder_features {
bool oneway_spam_detection;
bool freeze_notification;
};
static const match_table_t tokens = {
@ -71,6 +72,7 @@ static const match_table_t tokens = {
static struct binder_features binder_features = {
.oneway_spam_detection = true,
.freeze_notification = true,
};
static inline struct binderfs_info *BINDERFS_I(const struct inode *inode)
@ -621,6 +623,12 @@ 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;
}

1
tools/testing/selftests/filesystems/binderfs/binderfs_test.c
View file

@ -147,6 +147,7 @@ static void __do_binderfs_test(void)
char device_path[sizeof("/dev/binderfs/") + BINDERFS_MAX_NAME];
static const char * const binder_features[] = {
"oneway_spam_detection",
"freeze_notification",
};
change_to_mountns();