Linux Certif

Toute la documentation sur la certification Linux LPI

nodeupdown_get_up_nodes_string

NAME

nodeupdown_get_up_nodes_string, nodeupdown_get_down_nodes_string, - get up or down nodes

SYNOPSIS

#include <nodeupdown.h>

int nodeupdown_get_up_nodes_string(nodeupdown_t handle, char *buf, int buflen);

int nodeupdown_get_down_nodes_string(nodeupdown_t handle, char *buf, int buflen);

DESCRIPTION

nodeupdown_get_up_nodes_string() retrieves a ranged string of nodes that are up and places it in the buffer pointed to by buf. buflen should indicate the length of the buffer. nodeupdown_get_down_nodes_string() is identical to nodeupdown_get_up_nodes_string(), except that it retrieves a ranged string of down nodes.

RETURN VALUES

On success, 0 is returned. On error, -1 is returned, and an error code is returned in handle. The error code can be retrieved via nodeupdown_errnum(3) , and a description of the error code can be retrieved via nodeupdown_strerror(3). Error codes are defined in nodeupdown.h.

ERRORS

NODEUPDOWN_ERR_NULLHANDLE

The handle parameter is NULL. The nodeupdown handle must be created with nodeupdown_handle_create(3).

NODEUPDOWN_ERR_NOTLOADED

nodeupdown_load_data(3) has not been called and no data has been retrieved.

NODEUPDOWN_ERR_PARAMETERS

An incorrect parameter has been passed in.

NODEUPDOWN_ERR_OVERFLOW

The buffer pointed to by buf is not large enough to store the ranged string of nodes.

NODEUPDOWN_ERR_OUTMEM

malloc(3) has failed internally.

NODEUPDOWN_ERR_CLUSTERLIST_MODULE

Internal error with the clusterlist module

NODEUPDOWN_ERR_HOSTLIST

Hostlist API has failed internally.

NODEUPDOWN_ERR_MAGIC

handle has an incorrect magic number. handle does not point to a nodeupdown handle or handle has been destroyed by nodeupdown_handle_destroy(3).

FILES

/usr/include/nodeupdown.h

SEE ALSO

libnodeupdown(3), nodeupdown_handle_create(3), nodeupdown_load_data(3), nodeupdown_get_up_nodes_list (3), nodeupdown_get_down_nodes_list (3), nodeupdown_errnum(3), nodeupdown_strerror(3)