The last lines of fanotify_read() in fanotify_user.c are: if (start != buf && ret != -EFAULT) ret = buf - start; return ret; This implies that an error code is only returned, if reading the first event on the queue fails or if EFAULT occurs. Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx> --- man7/fanotify.7 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/man7/fanotify.7 b/man7/fanotify.7 index 083244f..6936b88 100644 --- a/man7/fanotify.7 +++ b/man7/fanotify.7 @@ -131,6 +131,14 @@ until either a file event occurs or the call is interrupted by a signal The return value of .BR read (2) is the length of the filled buffer, or \-1 in case of an error. +If multiple events are on the fanotify queue, +.BR read (2) +will only report an error, if reading the first event fails or an error +.B EFAULT +occurs. +If reading the first event is successful but reading any further event fails, +.BR read (2) +returns the length of the buffer filled with all prior events. After a successful .BR read (2), the read buffer contains one or more of the following structures: -- 1.9.2 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
