linux-kernel - [PATCH v3 28/38] nfsd: add tracepoint to dir

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250924-dir-deleg-v3-28-9f3af8bc5c40@kernel.org>
Date: Wed, 24 Sep 2025 14:06:14 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Alexander Viro <viro@...iv.linux.org.uk>, 
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
 Chuck Lever <chuck.lever@...cle.com>, 
 Alexander Aring <alex.aring@...il.com>, 
 Trond Myklebust <trondmy@...nel.org>, Anna Schumaker <anna@...nel.org>, 
 Steve French <sfrench@...ba.org>, 
 Ronnie Sahlberg <ronniesahlberg@...il.com>, 
 Shyam Prasad N <sprasad@...rosoft.com>, Tom Talpey <tom@...pey.com>, 
 Bharath SM <bharathsm@...rosoft.com>, NeilBrown <neil@...wn.name>, 
 Olga Kornievskaia <okorniev@...hat.com>, Dai Ngo <Dai.Ngo@...cle.com>, 
 Jonathan Corbet <corbet@....net>, Amir Goldstein <amir73il@...il.com>, 
 Miklos Szeredi <miklos@...redi.hu>, Paulo Alcantara <pc@...guebit.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Danilo Krummrich <dakr@...nel.org>, 
 David Howells <dhowells@...hat.com>, Tyler Hicks <code@...icks.com>, 
 Namjae Jeon <linkinjeon@...nel.org>, Steve French <smfrench@...il.com>, 
 Sergey Senozhatsky <senozhatsky@...omium.org>, 
 Carlos Maiolino <cem@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, 
 Masami Hiramatsu <mhiramat@...nel.org>, 
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
 Paulo Alcantara <pc@...guebit.org>
Cc: Rick Macklem <rick.macklem@...il.com>, linux-fsdevel@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org, 
 linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org, 
 linux-doc@...r.kernel.org, netfs@...ts.linux.dev, ecryptfs@...r.kernel.org, 
 linux-unionfs@...r.kernel.org, linux-xfs@...r.kernel.org, 
 linux-trace-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH v3 28/38] nfsd: add tracepoint to dir_event handler

Add some extra visibility around the fsnotify handlers.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/nfsd/nfs4state.c |  2 ++
 fs/nfsd/trace.h     | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index f3d3e3faf7d5f1b2ee39abb7eabd2fa406bbac21..2147b5f80ca0e650e9dbdb63de7c9af6f4bc7bff 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -9796,6 +9796,8 @@ nfsd_handle_dir_event(u32 mask, const struct inode *dir, const void *data,
 	struct file_lock_core *flc;
 	struct nfsd_notify_event *evt;

+	trace_nfsd_file_fsnotify_handle_dir_event(mask, dir, name);
+
 	ctx = locks_inode_context(dir);
 	if (!ctx || list_empty(&ctx->flc_lease))
 		return 0;
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 01380425347b946bbf5a70a2ba10190ae4ec6303..d8b6d87f1ec09ca80fe4218fd79aaa803a316619 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -1311,6 +1311,26 @@ TRACE_EVENT(nfsd_file_fsnotify_handle_event,
 			__entry->nlink, __entry->mode, __entry->mask)
 );

+TRACE_EVENT(nfsd_file_fsnotify_handle_dir_event,
+	TP_PROTO(u32 mask, const struct inode *dir, const struct qstr *name),
+	TP_ARGS(mask, dir, name),
+	TP_STRUCT__entry(
+		__field(u32, mask)
+		__field(dev_t, s_dev)
+		__field(ino_t, i_ino)
+		__string_len(name, name->name, name->len)
+	),
+	TP_fast_assign(
+		__entry->mask = mask;
+		__entry->s_dev = dir->i_sb->s_dev;
+		__entry->i_ino = dir->i_ino;
+		__assign_str(name);
+	),
+	TP_printk("inode=0x%x:0x%x:0x%lx mask=0x%x name=%s",
+			MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
+			__entry->i_ino, __entry->mask, __get_str(name))
+);
+
 DECLARE_EVENT_CLASS(nfsd_file_gc_class,
 	TP_PROTO(
 		const struct nfsd_file *nf

-- 
2.51.0