linux-ext4 - [PATCH 2/3] fuse_trace: make the root nodeid dynamic

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <176169811290.1426070.12532889416864507400.stgit@frogsfrogsfrogs>
Date: Tue, 28 Oct 2025 17:53:33 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: djwong@...nel.org, miklos@...redi.hu
Cc: joannelkoong@...il.com, bernd@...ernd.com, neal@...pa.dev,
 linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH 2/3] fuse_trace: make the root nodeid dynamic

From: Darrick J. Wong <djwong@...nel.org>

Enhance the iomap config tracepoint to report the node id of the root
directory.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 fs/fuse/fuse_trace.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)


diff --git a/fs/fuse/fuse_trace.h b/fs/fuse/fuse_trace.h
index c425c56f71d4af..9a52f258ca3b2b 100644
--- a/fs/fuse/fuse_trace.h
+++ b/fs/fuse/fuse_trace.h
@@ -991,6 +991,7 @@ TRACE_EVENT(fuse_iomap_config,
 
 	TP_STRUCT__entry(
 		__field(dev_t,			connection)
+		__field(uint64_t,		root_nodeid)
 
 		__field(uint32_t,		flags)
 		__field(uint32_t,		blocksize)
@@ -1005,6 +1006,7 @@ TRACE_EVENT(fuse_iomap_config,
 
 	TP_fast_assign(
 		__entry->connection	=	fm->fc->dev;
+		__entry->root_nodeid	=	fm->fc->root_nodeid;
 		__entry->flags		=	outarg->flags;
 		__entry->blocksize	=	outarg->s_blocksize;
 		__entry->max_links	=	outarg->s_max_links;
@@ -1015,8 +1017,8 @@ TRACE_EVENT(fuse_iomap_config,
 		__entry->uuid_len	=	outarg->s_uuid_len;
 	),
 
-	TP_printk("connection %u flags (%s) blocksize 0x%x max_links %u time_gran %u time_min %lld time_max %lld maxbytes 0x%llx uuid_len %u",
-		  __entry->connection,
+	TP_printk("connection %u root_ino 0x%llx flags (%s) blocksize 0x%x max_links %u time_gran %u time_min %lld time_max %lld maxbytes 0x%llx uuid_len %u",
+		  __entry->connection, __entry->root_nodeid,
 		  __print_flags(__entry->flags, "|", FUSE_IOMAP_CONFIG_STRINGS),
 		  __entry->blocksize, __entry->max_links, __entry->time_gran,
 		  __entry->time_min, __entry->time_max, __entry->maxbytes,