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sam_data_getsize(3) [centos man page]

SAM_DATA_GETSIZE(3)				    Corosync Cluster Engine Programmer's Manual 			       SAM_DATA_GETSIZE(3)

NAME
sam_data_getsize - Return size of stored data in bytes SYNOPSIS
#include <corosync/sam.h> cs_error_t sam_data_getsize (size_t *size); DESCRIPTION
The sam_data_getsize function is used to return size of stored data. Size is returned in bytes. If user data is NULL, zero is returned. Function is intended to be used before sam_data_restore(3) call to properly allocate buffer for restored data. RETURN VALUE
This call return CS_OK value if successful, otherwise and error is returned. ERRORS
CS_ERR_BAD_HANDLE component was not initialized by calling sam_initialize(3) or it was finalized. CS_ERR_INVALID_PARAM size parameter is NULL SEE ALSO
sam_data_store(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 inturrupted by a signal CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported CS_ERR_MESSAGE_ERROR Incorrect auth message received CS_ERR_NO_MEMORY Not enough memory to completed the requested task corosync Man Page 04/15/2010 SAM_DATA_GETSIZE(3)

Check Out this Related Man Page

SAM_DATA_STORE(3)				    Corosync Cluster Engine Programmer's Manual 				 SAM_DATA_STORE(3)

NAME
sam_data_store - Store user data SYNOPSIS
#include <corosync/sam.h> cs_error_t sam_data_store (const void *data, size_t size); DESCRIPTION
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. RETURN VALUE
This call return CS_OK value if successful, otherwise and error is returned. ERRORS
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) SEE ALSO
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 inturrupted by a signal CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported CS_ERR_MESSAGE_ERROR Incorrect auth message received CS_ERR_NO_MEMORY Not enough memory to completed the requested task corosync Man Page 04/15/2010 SAM_DATA_STORE(3)
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