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Old 03-21-2002
whoops

i did not even read what you posted before i answerd you, well what are the permissions of the sh_history do you even have read....?
 
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RDMA_POST_SEND(3)					   Librdmacm Programmer's Manual					 RDMA_POST_SEND(3)

NAME
rdma_post_send - post a work request to send a message. SYNOPSIS
#include <rdma/rdma_verbs.h> int rdma_post_send (struct rdma_cm_id *id, void *context, void *addr, size_t length, struct ibv_mr *mr, int flags); ARGUMENTS
id A reference to a communication identifier where the message buffer will be posted. context User-defined context associated with the request. addr The address of the memory buffer to post. length The length of the memory buffer. mr Optional registered memory region associated with the posted buffer. flags Optional flags used to control the send operation. DESCRIPTION
Posts a work request to the send queue of the queue pair associated with the rdma_cm_id. The contents of the posted buffer will be sent to the remote peer of a connection. RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason. NOTES
The user is responsible for ensuring that the remote peer has queued a receive request before issuing the send operations. For a list of supported flags, see ibv_post_send. Unless the send request is using inline data, the message buffer must have been registered before being posted, with the mr parameter referencing the registration. The buffer must remain registered until the send completes. Send operations may not be posted to an rdma_cm_id or the corresponding queue pair until it has been connected. The user-defined context associated with the send request will be returned to the user through the work completion wr_id, work request identifier, field. SEE ALSO
rdma_cm(7), rdma_connect(3), rdma_accept(3), ibv_post_send(3), rdma_post_sendv(3), rdma_post_recv(3) librdmacm 2010-07-19 RDMA_POST_SEND(3)