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nfsd: add nfsd_vfs_create tracepoints

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Observe the start of file and directory creation 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 15:59:23 -04:00 committed by Chuck Lever
parent a5256e687f
commit 85b0b1f217
3 changed files with 32 additions and 0 deletions
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3
fs/nfsd/nfs3proc.c
View File

@ -14,6 +14,7 @@
#include "xdr3.h"
#include "vfs.h"
#include "filecache.h"
#include "trace.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
@ -266,6 +267,8 @@ nfsd3_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp,
__be32 status;
int host_err;
trace_nfsd_vfs_create(rqstp, fhp, S_IFREG, argp->name, argp->len);
if (isdotent(argp->name, argp->len))
return nfserr_exist;
if (!(iap->ia_valid & ATTR_MODE))

27
fs/nfsd/trace.h
View File

@ -2417,6 +2417,33 @@ TRACE_EVENT(nfsd_vfs_lookup,
)
);
TRACE_EVENT(nfsd_vfs_create,
TP_PROTO(
const struct svc_rqst *rqstp,
const struct svc_fh *fhp,
umode_t type,
const char *name,
unsigned int len
),
TP_ARGS(rqstp, fhp, type, name, len),
TP_STRUCT__entry(
NFSD_TRACE_PROC_CALL_FIELDS(rqstp)
__field(u32, fh_hash)
__field(umode_t, type)
__string_len(name, name, len)
),
TP_fast_assign(
NFSD_TRACE_PROC_CALL_ASSIGNMENTS(rqstp);
__entry->fh_hash = knfsd_fh_hash(&fhp->fh_handle);
__entry->type = type;
__assign_str(name);
),
TP_printk("xid=0x%08x fh_hash=0x%08x type=%s name=%s",
__entry->xid, __entry->fh_hash,
show_fs_file_type(__entry->type), __get_str(name)
)
);
#endif /* _NFSD_TRACE_H */
#undef TRACE_INCLUDE_PATH

2
fs/nfsd/vfs.c
View File

@ -1549,6 +1549,8 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
__be32 err;
int host_err;
trace_nfsd_vfs_create(rqstp, fhp, type, fname, flen);
if (isdotent(fname, flen))
return nfserr_exist;