summaryrefslogtreecommitdiff
path: root/drivers/android
diff options
context:
space:
mode:
authorCarlos Llamas <cmllamas@google.com>2022-04-29 23:56:42 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-05-09 15:43:24 +0200
commitd23386ed7019d50164fa2066aae8656097a02425 (patch)
tree36cef5b0a3b0596d668d7a4c65a42355e01289f0 /drivers/android
parentbd32889e841c12533d09a1bd02bba932baa9ed8f (diff)
binderfs: add extended_error feature entry
Add extended_error to the binderfs feature list, to help userspace determine whether the BINDER_GET_EXTENDED_ERROR ioctl is supported by the binder driver. Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org> Acked-by: Todd Kjos <tkjos@google.com> Signed-off-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/20220429235644.697372-4-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
-rw-r--r--drivers/android/binderfs.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c
index e3605cdd4335..6c5e94f6cb3a 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;
};
static const struct constant_table binderfs_param_stats[] = {
@@ -75,6 +76,7 @@ static const struct fs_parameter_spec binderfs_fs_parameters[] = {
static struct binder_features binder_features = {
.oneway_spam_detection = true,
+ .extended_error = true,
};
static inline struct binderfs_info *BINDERFS_SB(const struct super_block *sb)
@@ -615,6 +617,12 @@ static int init_binder_features(struct super_block *sb)
if (IS_ERR(dentry))
return PTR_ERR(dentry);
+ dentry = binderfs_create_file(dir, "extended_error",
+ &binder_features_fops,
+ &binder_features.extended_error);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+
return 0;
}