NAME

       cpg_zcb_alloc - Allocates a zero copy buffer

SYNOPSIS

       #include <corosync/cpg.h>

       int cpg_zcb_alloc(cpg_handle_t handle, size_t size, void **buffer);

DESCRIPTION

       The   cpg_zcb_alloc   function  will  allocate  a  zero  copy  buffer  for  use  with  the
       cpg_zcb_mcast_joined(3) function.  This buffer should not be used in another thread  while
       a  cpg_zcb_mcast_joined  operation is taking place on the buffer.  The buffer is allocated
       via operating system mechanisms to avoid copying in the IPC layer.

       The argument handle describes the handle on which the buffer will be allocated.

       The argument size requests a buffer of size be allocated.

       The buffer argument is set to the buffer address that is allocated by this operation.

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       The errors are undocumented.

SEE ALSO

       cpg_overview(3),  cpg_initialize(3),  cpg_finalize(3),   cpg_fd_get(3),   cpg_dispatch(3),
       cpg_join(3),  cpg_leave(3),  cpg_mcast_joined(3),  cpg_membership_get(3)  cpg_zcb_alloc(3)
       cpg_zcb_free(3)     cpg_zcb_mcast_joined(3)     cpg_context_get(3)      cpg_context_set(3)
       cpg_local_get(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