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nfsd: add tracepoint to nfsd_symlink

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Observe the start of SYMLINK operations for all NFS versions.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Jeff Layton
2025-05-03 15:59:24 -04:00
committed by Chuck Lever
parent 85b0b1f217
commit 2344b72302
2 changed files with 29 additions and 0 deletions
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27
fs/nfsd/trace.h
View File

@@ -2444,6 +2444,33 @@ TRACE_EVENT(nfsd_vfs_create,
)
);
TRACE_EVENT(nfsd_vfs_symlink,
TP_PROTO(
const struct svc_rqst *rqstp,
const struct svc_fh *fhp,
const char *name,
unsigned int namelen,
const char *target
),
TP_ARGS(rqstp, fhp, name, namelen, target),
TP_STRUCT__entry(
NFSD_TRACE_PROC_CALL_FIELDS(rqstp)
__field(u32, fh_hash)
__string_len(name, name, namelen)
__string(target, target)
),
TP_fast_assign(
NFSD_TRACE_PROC_CALL_ASSIGNMENTS(rqstp);
__entry->fh_hash = knfsd_fh_hash(&fhp->fh_handle);
__assign_str(name);
__assign_str(target);
),
TP_printk("xid=0x%08x fh_hash=0x%08x name=%s target=%s",
__entry->xid, __entry->fh_hash,
__get_str(name), __get_str(target)
)
);
#endif /* _NFSD_TRACE_H */
#undef TRACE_INCLUDE_PATH

2
fs/nfsd/vfs.c
View File

@@ -1651,6 +1651,8 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
__be32 err, cerr;
int host_err;
trace_nfsd_vfs_symlink(rqstp, fhp, fname, flen, path);
err = nfserr_noent;
if (!flen || path[0] == '\0')
goto out;