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generic linked-list data handling with a string as a key.
[The Net-SNMP library]


Functions
NETSNMP_INLINE void  netsnmp_free_list_data (netsnmp_data_list *node)
  frees the data and a name at a given data_list node.
NETSNMP_INLINE void  netsnmp_free_all_list_data (netsnmp_data_list *head)
  frees all data and nodes in a list.
NETSNMP_INLINE netsnmp_data_list *  netsnmp_create_data_list (const char *name, void *data, Netsnmp_Free_List_Data *beer)
  adds creates a data_list node given a name, data and a free function ptr.
NETSNMP_INLINE void  netsnmp_add_list_data (netsnmp_data_list **head, netsnmp_data_list *node)
  depreciated: use netsnmp_data_list_add_node()
NETSNMP_INLINE void  netsnmp_data_list_add_node (netsnmp_data_list **head, netsnmp_data_list *node)
  adds data to a datalist
NETSNMP_INLINE netsnmp_data_list *  netsnmp_data_list_add_data (netsnmp_data_list **head, const char *name, void *data, Netsnmp_Free_List_Data *beer)
  adds data to a datalist
NETSNMP_INLINE void *  netsnmp_get_list_data (netsnmp_data_list *head, const char *name)
  returns a data_list node's data for a given name within a data_list
NETSNMP_INLINE netsnmp_data_list *  netsnmp_get_list_node (netsnmp_data_list *head, const char *name)
  returns a data_list node for a given name within a data_list
int  netsnmp_remove_list_node (netsnmp_data_list **realhead, const char *name)
  Removes a named node from a data_list (and frees it).
void  netsnmp_register_save_list (netsnmp_data_list **datalist, const char *type, const char *token, Netsnmp_Save_List_Data *data_list_save_ptr, Netsnmp_Read_List_Data *data_list_read_ptr, Netsnmp_Free_List_Data *data_list_free_ptr)
  registers to store a data_list set of data at persistent storage time
int  netsnmp_save_all_data_callback (int major, int minor, void *serverarg, void *clientarg)
  intended to be registerd as a callback operation.
int  netsnmp_save_all_data (netsnmp_data_list *head, const char *type, const char *token, Netsnmp_Save_List_Data *data_list_save_ptr)
  intended to be called as a callback during persistent save operations.
void  netsnmp_read_data_callback (const char *token, char *line)
  intended to be registerd as a .conf parser It should be registered using:

Function Documentation

NETSNMP_INLINE void netsnmp_add_list_data (  netsnmp_data_list **  head,
netsnmp_data_list *  node
) 
 

depreciated: use netsnmp_data_list_add_node()

Definition at line 83 of file data_list.c.

References netsnmp_data_list_add_node().

Referenced by netsnmp_data_list_add_data(), netsnmp_read_data_callback(), netsnmp_register_auto_data_table(), netsnmp_register_handler_by_name(), netsnmp_register_save_list(), and netsnmp_request_add_list_data().
NETSNMP_INLINE netsnmp_data_list* netsnmp_create_data_list (  const char *  name,
void *  data,
Netsnmp_Free_List_Data *  beer
) 
 

adds creates a data_list node given a name, data and a free function ptr.

Parameters:
name  the name of the node to cache the data.
data  the data to be stored under that name
beer  A function that can free the data pointer (in the future)
Returns:
a newly created data_list node which can be given to the netsnmp_add_list_data function.

Definition at line 60 of file data_list.c.

References netsnmp_data_list_s::data, netsnmp_data_list_s::free_func, netsnmp_data_list_s::name, and SNMP_MALLOC_TYPEDEF.

Referenced by _data_lookup(), _netsnmp_stash_cache_load(), netsnmp_cache_reqinfo_insert(), netsnmp_container_table_row_insert(), netsnmp_data_list_add_data(), netsnmp_insert_iterator_context(), netsnmp_insert_table_row(), netsnmp_instance_num_file_handler(), netsnmp_old_api_helper(), netsnmp_read_data_callback(), netsnmp_register_auto_data_table(), netsnmp_register_handler_by_name(), netsnmp_register_save_list(), netsnmp_row_merge_status_get(), and table_helper_handler().
NETSNMP_INLINE netsnmp_data_list* netsnmp_data_list_add_data (  netsnmp_data_list **  head,
const char *  name,
void *  data,
Netsnmp_Free_List_Data *  beer
) 
 

adds data to a datalist

Parameters:
head  a pointer to the head node of a data_list
name  the name of the node to cache the data.
data  the data to be stored under that name
beer  A function that can free the data pointer (in the future)
Returns:
a newly created data_list node which was inserted in the list

Definition at line 137 of file data_list.c.

References netsnmp_add_list_data(), netsnmp_create_data_list(), and snmp_log().
NETSNMP_INLINE void netsnmp_data_list_add_node (  netsnmp_data_list **  head,
netsnmp_data_list *  node
) 
 

adds data to a datalist

Parameters:
head  a pointer to the head node of a data_list
node  a node to stash in the data_list

Definition at line 93 of file data_list.c.

References netsnmp_data_list_s::name, netsnmp_data_list_add_node(), netsnmp_data_list_s::next, and snmp_log().

Referenced by netsnmp_add_list_data(), and netsnmp_data_list_add_node().
NETSNMP_INLINE void netsnmp_free_all_list_data (  netsnmp_data_list *  head  ) 
 

frees all data and nodes in a list.

Parameters:
head  the top node of the list to be freed.

Definition at line 42 of file data_list.c.

References netsnmp_free_list_data(), netsnmp_data_list_s::next, and SNMP_FREE.

Referenced by netsnmp_clear_handler_list(), and netsnmp_free_request_data_sets().
NETSNMP_INLINE void netsnmp_free_list_data (  netsnmp_data_list *  node  ) 
 

frees the data and a name at a given data_list node.

Note that this doesn't free the node itself.

Parameters:
node  the node for which the data should be freed

Definition at line 26 of file data_list.c.

References netsnmp_data_list_s::data, netsnmp_data_list_s::free_func, netsnmp_data_list_s::name, and SNMP_FREE.

Referenced by netsnmp_free_all_list_data(), netsnmp_free_request_data_set(), and netsnmp_remove_list_node().
NETSNMP_INLINE void* netsnmp_get_list_data (  netsnmp_data_list *  head,
const char *  name
) 
 

returns a data_list node's data for a given name within a data_list

Parameters:
head  the head node of a data_list
name  the name to find
Returns:
a pointer to the data cached at that node

Definition at line 162 of file data_list.c.

References netsnmp_data_list_s::data, netsnmp_data_list_s::name, and netsnmp_data_list_s::next.

Referenced by netsnmp_read_data_callback(), and netsnmp_request_get_list_data().
NETSNMP_INLINE netsnmp_data_list* netsnmp_get_list_node (  netsnmp_data_list *  head,
const char *  name
) 
 

returns a data_list node for a given name within a data_list

Parameters:
head  the head node of a data_list
name  the name to find
Returns:
a pointer to the data_list node

Definition at line 180 of file data_list.c.

References netsnmp_data_list_s::name, and netsnmp_data_list_s::next.
void netsnmp_read_data_callback (  const char *  token,
char *  line
) 
 

intended to be registerd as a .conf parser It should be registered using:

register_app_config_handler("token", netsnmp_read_data_callback, XXX)

where INFO_POINTER is a pointer to a netsnmp_data_list_saveinfo object containing apporpriate registration information

Definition at line 332 of file data_list.c.

References netsnmp_add_list_data(), netsnmp_create_data_list(), netsnmp_get_list_data(), read_config_read_data(), and snmp_log().

Referenced by netsnmp_register_save_list().
void netsnmp_register_save_list (  netsnmp_data_list **  datalist,
const char *  type,
const char *  token,
Netsnmp_Save_List_Data *  data_list_save_ptr,
Netsnmp_Read_List_Data *  data_list_read_ptr,
Netsnmp_Free_List_Data *  data_list_free_ptr
) 
 

registers to store a data_list set of data at persistent storage time

Parameters:
datalist  the data to be saved
type  the name of the application to save the data as. If left NULL the default application name that was registered during the init_snmp call will be used (recommended).
token  the unique token identifier string to use as the first word in the persistent file line.
data_list_save_ptr  a function pointer which will be called to save the rest of the data to a buffer.
data_list_read_ptr  a function pointer which can read the remainder of a saved line and return the application specific void * pointer.
data_list_free_ptr  a function pointer which will be passed to the data node for freeing it in the future when/if the list/node is cleaned up or destroyed.
Todo:
netsnmp_register_save_list should handle the same token name being saved from different types?

Definition at line 231 of file data_list.c.

References netsnmp_add_list_data(), netsnmp_create_data_list(), netsnmp_read_data_callback(), register_config_handler(), snmp_log(), SNMP_MALLOC_TYPEDEF, and snmp_register_callback().
int netsnmp_remove_list_node (  netsnmp_data_list **  realhead,
const char *  name
) 
 

Removes a named node from a data_list (and frees it).

Parameters:
realhead  a pointer to the head node of a data_list
name  the name to find and remove
Returns:
0 on successful find-and-delete, 1 otherwise.

Definition at line 198 of file data_list.c.

References netsnmp_free_list_data(), and netsnmp_data_list_s::next.

Referenced by netsnmp_request_remove_list_data().
int netsnmp_save_all_data (  netsnmp_data_list *  head,
const char *  type,
const char *  token,
Netsnmp_Save_List_Data *  data_list_save_ptr
) 
 

intended to be called as a callback during persistent save operations.

See the netsnmp_save_all_data_callback for where this is typically used.

Definition at line 297 of file data_list.c.

References netsnmp_data_list_s::data, netsnmp_data_list_s::name, netsnmp_data_list_s::next, and read_config_store().

Referenced by netsnmp_save_all_data_callback().
int netsnmp_save_all_data_callback (  int  major,
int  minor,
void *  serverarg,
void *  clientarg
) 
 

intended to be registerd as a callback operation.

It should be registered using:

snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_STORE_DATA, netsnmp_save_all_data_callback, INFO_POINTER);

where INFO_POINTER is a pointer to a netsnmp_data_list_saveinfo object containing apporpriate registration information

Definition at line 280 of file data_list.c.

References netsnmp_save_all_data(), and snmp_log().
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Last modified: Thursday, 01-Mar-2007 16:20:01 PST
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