sam_data_store - Store user data
#include <corosync/sam.h>
cs_error_t sam_data_store (const void *data, size_t
size );
The
sam_data_store function is used to store data, which survives between
instances.
The
data parameter is pointer to memory with data to store. Data are
stored in newly allocated memory inside library, so caller can safely remove
them after call of function.
You can use NULL as parameter to remove and free previously saved data. In this
case
size argument is ignored.
The
size parameter is length of
data.
Use
sam_data_getsize(3) to find out length of stored data and
sam_data_restore(3) to restore stored data.
This call return CS_OK value if successful, otherwise and error is returned.
- CS_ERR_BAD_HANDLE
- component was not initialized by calling
sam_initialize(3) or it was finalized.
- CS_ERR_NO_MEMORY
- internal malloc/realloc failed because data are too
large
- CS_ERR_LIBRARY
- some internal error appeared (mostly because communication
with parent process failed)
sam_data_getsize(3),
sam_data_restore(3)
CS_ERR_TRY_AGAIN Resource temporarily unavailable
CS_ERR_INVALID_PARAM Invalid argument
CS_ERR_ACCESS Permission denied
CS_ERR_LIBRARY The connection failed
CS_ERR_INTERRUPT System call interrupted by a signal
CS_ERR_NOT_SUPPORTED The requested protocol/functionality not supported
CS_ERR_MESSAGE_ERROR Incorrect auth message received
CS_ERR_NO_MEMORY Not enough memory to complete the requested task