diff options
Diffstat (limited to 'src/ctrl')
| -rw-r--r-- | src/ctrl/control_if.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/ctrl/control_if.c b/src/ctrl/control_if.c index d2eb3e90..f1cc7ab6 100644 --- a/src/ctrl/control_if.c +++ b/src/ctrl/control_if.c @@ -61,6 +61,13 @@ vector ctrl_node_vec; +/* global list of control interface lookup helpers */ +struct lookup_helper { + struct llist_head list; + ctrl_cmd_lookup lookup; +}; +static LLIST_HEAD(ctrl_lookup_helpers); + int ctrl_parse_get_num(vector vline, int i, long *num) { char *token, *tmp; @@ -225,6 +232,7 @@ int ctrl_cmd_handle(struct ctrl_handle *ctrl, struct ctrl_cmd *cmd, } for (i=0;i<vector_active(vline);i++) { + struct lookup_helper *lh; int rc; if (ctrl->lookup) @@ -232,6 +240,14 @@ int ctrl_cmd_handle(struct ctrl_handle *ctrl, struct ctrl_cmd *cmd, else rc = 0; + if (!rc) { + llist_for_each_entry(lh, &ctrl_lookup_helpers, list) { + rc = lh->lookup(data, vline, &node, &cmd->node, &i); + if (rc) + break; + } + } + if (rc == 1) { /* do nothing */ } else if (rc == -ENODEV) @@ -733,3 +749,28 @@ err: talloc_free(ctrl); return NULL; } + +/*! \brief Install a lookup helper function for control nodes + * This function is used by e.g. library code to install lookup helpers + * for additional nodes in the control interface. + * \param[in] lookup The lookup helper function + * \retuns - on success; negative on error. + */ +int ctrl_lookup_register(ctrl_cmd_lookup lookup) +{ + struct lookup_helper *lh; + + /* avoid double registration */ + llist_for_each_entry(lh, &ctrl_lookup_helpers, list) { + if (lh->lookup == lookup) + return -EEXIST; + } + + lh = talloc_zero(NULL, struct lookup_helper); + if (!lh) + return -ENOMEM; + + lh->lookup = lookup; + llist_add_tail(&lh->list, &ctrl_lookup_helpers); + return 0; +} |