diff mbox series

[v7,02/18] fanotify: don't skip extra event info if no info_mode is set

Message ID ce1cc82322ae850a0b5f36e72b8eb78ad9969b7c.1731433903.git.josef@toxicpanda.com (mailing list archive)
State New
Headers show
Series fanotify: add pre-content hooks | expand

Commit Message

Josef Bacik Nov. 12, 2024, 5:55 p.m. UTC 
From: Amir Goldstein <amir73il@gmail.com>

Previously we would only include optional information if you requested
it via an FAN_ flag at fanotify_init time (FAN_REPORT_FID for example).
However this isn't necessary as the event length is encoded in the
metadata, and if the user doesn't want to consume the information they
don't have to.  With the PRE_ACCESS events we will always generate range
information, so drop this check in order to allow this extra
information to be exported without needing to have another flag.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/notify/fanotify/fanotify_user.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 2d85c71717d6..8528c1bfee7d 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -159,9 +159,6 @@  static size_t fanotify_event_len(unsigned int info_mode,
 	int fh_len;
 	int dot_len = 0;
 
-	if (!info_mode)
-		return event_len;
-
 	if (fanotify_is_error_event(event->mask))
 		event_len += FANOTIFY_ERROR_INFO_LEN;
 
@@ -756,12 +753,10 @@  static ssize_t copy_event_to_user(struct fsnotify_group *group,
 	buf += FAN_EVENT_METADATA_LEN;
 	count -= FAN_EVENT_METADATA_LEN;
 
-	if (info_mode) {
-		ret = copy_info_records_to_user(event, info, info_mode, pidfd,
-						buf, count);
-		if (ret < 0)
-			goto out_close_fd;
-	}
+	ret = copy_info_records_to_user(event, info, info_mode, pidfd,
+					buf, count);
+	if (ret < 0)
+		goto out_close_fd;
 
 	if (f)
 		fd_install(fd, f);