LU-8851 nodemap: add uid/gid only flags to control mapping

[fs/lustre-release.git] / lustre / ptlrpc / nodemap_lproc.c

diff --git a/lustre/ptlrpc/nodemap_lproc.c b/lustre/ptlrpc/nodemap_lproc.c
index 305f95b..c384785 100644 (file)
--- a/lustre/ptlrpc/nodemap_lproc.c
+++ b/lustre/ptlrpc/nodemap_lproc.c
@@ -481,6 +481,39 @@ static int nodemap_admin_seq_show(struct seq_file *m, void *data)
 }
 
 /**
+ * Reads and prints the mapping mode for the given nodemap.
+ *
+ * \param      m               seq file in proc fs
+ * \param      data            unused
+ * \retval     0               success
+ */
+static int nodemap_map_mode_seq_show(struct seq_file *m, void *data)
+{
+       struct lu_nodemap *nodemap;
+       int rc;
+
+       mutex_lock(&active_config_lock);
+       nodemap = nodemap_lookup(m->private);
+       mutex_unlock(&active_config_lock);
+       if (IS_ERR(nodemap)) {
+               rc = PTR_ERR(nodemap);
+               CERROR("cannot find nodemap '%s': rc = %d\n",
+                       (char *)m->private, rc);
+               return rc;
+       }
+
+       if (nodemap->nmf_map_uid_only)
+               seq_printf(m, "uid_only\n");
+       else if (nodemap->nmf_map_gid_only)
+               seq_printf(m, "gid_only\n");
+       else
+               seq_printf(m, "both\n");
+
+       nodemap_putref(nodemap);
+       return 0;
+}
+
+/**
  * Reads and prints the deny_unknown flag for the given nodemap.
  *
  * \param      m               seq file in proc fs
@@ -1112,6 +1145,7 @@ LPROC_SEQ_FOPS_RO(nodemap_squash_gid);
 #endif
 
 LPROC_SEQ_FOPS_RO(nodemap_deny_unknown);
+LPROC_SEQ_FOPS_RO(nodemap_map_mode);
 
 const struct file_operations nodemap_ranges_fops = {
        .open                   = nodemap_ranges_open,
@@ -1152,6 +1186,10 @@ static struct lprocfs_vars lprocfs_nodemap_vars[] = {
                .fops           = &nodemap_deny_unknown_fops,
        },
        {
+               .name           = "map_mode",
+               .fops           = &nodemap_map_mode_fops,
+       },
+       {
                .name           = "squash_uid",
                .fops           = &nodemap_squash_uid_fops,
        },