diff options
| author | Christoph Hellwig <hch@infradead.org> | 2012-02-28 11:01:40 +0000 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-03-26 13:58:48 -0500 |
| commit | f616137519feb17b849894fcbe634a021d3fa7db (patch) | |
| tree | efa0007b9141ee85f65980e3731bb02f18dcb4bc /fs/xfs/xfs_trace.h | |
| parent | c999a223c2f0d31c64ef7379814cea1378b2b800 (diff) | |
| download | lwn-f616137519feb17b849894fcbe634a021d3fa7db.tar.gz lwn-f616137519feb17b849894fcbe634a021d3fa7db.zip | |
xfs: trace xfs_name strings correctly
Strings store in an xfs_name structure are often not NUL terminated,
print them using the correct printf specifiers that make use of the
string length store in the xfs_name structure.
Reported-by: Brian Candler <B.Candler@pobox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
| -rw-r--r-- | fs/xfs/xfs_trace.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 75eb54af4d58..afb028213dbd 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -627,16 +627,19 @@ DECLARE_EVENT_CLASS(xfs_namespace_class, TP_STRUCT__entry( __field(dev_t, dev) __field(xfs_ino_t, dp_ino) + __field(int, namelen) __dynamic_array(char, name, name->len) ), TP_fast_assign( __entry->dev = VFS_I(dp)->i_sb->s_dev; __entry->dp_ino = dp->i_ino; + __entry->namelen = name->len; memcpy(__get_str(name), name->name, name->len); ), - TP_printk("dev %d:%d dp ino 0x%llx name %s", + TP_printk("dev %d:%d dp ino 0x%llx name %.*s", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->dp_ino, + __entry->namelen, __get_str(name)) ) @@ -658,6 +661,8 @@ TRACE_EVENT(xfs_rename, __field(dev_t, dev) __field(xfs_ino_t, src_dp_ino) __field(xfs_ino_t, target_dp_ino) + __field(int, src_namelen) + __field(int, target_namelen) __dynamic_array(char, src_name, src_name->len) __dynamic_array(char, target_name, target_name->len) ), @@ -665,15 +670,20 @@ TRACE_EVENT(xfs_rename, __entry->dev = VFS_I(src_dp)->i_sb->s_dev; __entry->src_dp_ino = src_dp->i_ino; __entry->target_dp_ino = target_dp->i_ino; + __entry->src_namelen = src_name->len; + __entry->target_namelen = target_name->len; memcpy(__get_str(src_name), src_name->name, src_name->len); - memcpy(__get_str(target_name), target_name->name, target_name->len); + memcpy(__get_str(target_name), target_name->name, + target_name->len); ), TP_printk("dev %d:%d src dp ino 0x%llx target dp ino 0x%llx" - " src name %s target name %s", + " src name %.*s target name %.*s", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->src_dp_ino, __entry->target_dp_ino, + __entry->src_namelen, __get_str(src_name), + __entry->target_namelen, __get_str(target_name)) ) |