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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-06-21 17:06:23 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-07-30 03:08:56 +0300 |
| commit | 051382885552e12541cc0ebf82092be374a9ed2a (patch) | |
| tree | 82cd67753df6b74a8fc1bda154d703365b6e7e77 /fs/nfsd/trace.h | |
| parent | 28fffa6c57906ffa07e84f12aae5d99993cafdae (diff) | |
| download | linux-051382885552e12541cc0ebf82092be374a9ed2a.tar.xz | |
NFSD: Instrument fh_verify()
Capture file handles and how they map to local inodes. In particular,
NFSv4 PUTFH uses fh_verify() so we can now observe which file handles
are the target of OPEN, LOOKUP, RENAME, and so on.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/trace.h')
| -rw-r--r-- | fs/nfsd/trace.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index 081179fb17e8..d23ecf7ca9f8 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -171,6 +171,52 @@ TRACE_EVENT(nfsd_compound_encode_err, __entry->opnum, __entry->status) ); +#define show_fs_file_type(x) \ + __print_symbolic(x, \ + { S_IFLNK, "LNK" }, \ + { S_IFREG, "REG" }, \ + { S_IFDIR, "DIR" }, \ + { S_IFCHR, "CHR" }, \ + { S_IFBLK, "BLK" }, \ + { S_IFIFO, "FIFO" }, \ + { S_IFSOCK, "SOCK" }) + +TRACE_EVENT(nfsd_fh_verify, + TP_PROTO( + const struct svc_rqst *rqstp, + const struct svc_fh *fhp, + umode_t type, + int access + ), + TP_ARGS(rqstp, fhp, type, access), + TP_STRUCT__entry( + __field(unsigned int, netns_ino) + __sockaddr(server, rqstp->rq_xprt->xpt_remotelen) + __sockaddr(client, rqstp->rq_xprt->xpt_remotelen) + __field(u32, xid) + __field(u32, fh_hash) + __field(void *, inode) + __field(unsigned long, type) + __field(unsigned long, access) + ), + TP_fast_assign( + __entry->netns_ino = SVC_NET(rqstp)->ns.inum; + __assign_sockaddr(server, &rqstp->rq_xprt->xpt_local, + rqstp->rq_xprt->xpt_locallen); + __assign_sockaddr(client, &rqstp->rq_xprt->xpt_remote, + rqstp->rq_xprt->xpt_remotelen); + __entry->xid = be32_to_cpu(rqstp->rq_xid); + __entry->fh_hash = knfsd_fh_hash(&fhp->fh_handle); + __entry->inode = d_inode(fhp->fh_dentry); + __entry->type = type; + __entry->access = access; + ), + TP_printk("xid=0x%08x fh_hash=0x%08x inode=%p type=%s access=%s", + __entry->xid, __entry->fh_hash, __entry->inode, + show_fs_file_type(__entry->type), + show_nfsd_may_flags(__entry->access) + ) +); DECLARE_EVENT_CLASS(nfsd_fh_err_class, TP_PROTO(struct svc_rqst *rqstp, |