Add tracepoints to help debug uid/gid mappings to username/group. Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx> --- fs/nfs/idmap.c | 5 +++++ fs/nfs/nfs4trace.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index c2c4163..f16a872 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -49,6 +49,7 @@ #include "internal.h" #include "netns.h" +#include "nfs4trace.h" #define NFS_UINT_MAXLEN 11 @@ -849,6 +850,7 @@ int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_ if (!uid_valid(*uid)) ret = -ERANGE; } + trace_nfs4_map_name_to_uid(name, namelen, id, ret); return ret; } @@ -865,6 +867,7 @@ int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size if (!gid_valid(*gid)) ret = -ERANGE; } + trace_nfs4_map_group_to_gid(name, namelen, id, ret); return ret; } @@ -879,6 +882,7 @@ int nfs_map_uid_to_name(const struct nfs_server *server, kuid_t uid, char *buf, ret = nfs_idmap_lookup_name(id, "user", buf, buflen, idmap); if (ret < 0) ret = nfs_map_numeric_to_string(id, buf, buflen); + trace_nfs4_map_uid_to_name(buf, ret, id, ret); return ret; } int nfs_map_gid_to_group(const struct nfs_server *server, kgid_t gid, char *buf, size_t buflen) @@ -892,5 +896,6 @@ int nfs_map_gid_to_group(const struct nfs_server *server, kgid_t gid, char *buf, ret = nfs_idmap_lookup_name(id, "group", buf, buflen, idmap); if (ret < 0) ret = nfs_map_numeric_to_string(id, buf, buflen); + trace_nfs4_map_gid_to_group(buf, ret, id, ret); return ret; } diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index 82428fb..f00fa87 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -637,6 +637,52 @@ DEFINE_NFS4_INODE_EVENT(nfs4_set_security_label); DEFINE_NFS4_INODE_EVENT(nfs4_recall_delegation); DEFINE_NFS4_INODE_EVENT(nfs4_delegreturn); +DECLARE_EVENT_CLASS(nfs4_idmap_event, + TP_PROTO( + const char *name, + int len, + u32 id, + int error + ), + + TP_ARGS(name, len, id, error), + + TP_STRUCT__entry( + __field(int, error) + __field(u32, id) + __dynamic_array(char, name, len > 0 ? len + 1 : 1) + ), + + TP_fast_assign( + if (len < 0) + len = 0; + __entry->error = error < 0 ? error : 0; + __entry->id = id; + memcpy(__get_dynamic_array(name), name, len); + ((char *)__get_dynamic_array(name))[len] = 0; + ), + + TP_printk( + "error=%d id=%u name=%s", + __entry->error, + __entry->id, + __get_str(name) + ) +); +#define DEFINE_NFS4_IDMAP_EVENT(name) \ + DEFINE_EVENT(nfs4_idmap_event, name, \ + TP_PROTO( \ + const char *name, \ + int len, \ + u32 id, \ + int error \ + ), \ + TP_ARGS(name, len, id, error)) +DEFINE_NFS4_IDMAP_EVENT(nfs4_map_name_to_uid); +DEFINE_NFS4_IDMAP_EVENT(nfs4_map_group_to_gid); +DEFINE_NFS4_IDMAP_EVENT(nfs4_map_uid_to_name); +DEFINE_NFS4_IDMAP_EVENT(nfs4_map_gid_to_group); + #endif /* _TRACE_NFS4_H */ #undef TRACE_INCLUDE_PATH -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
