pSOSystem System Calls - Read

pNA+ System Calls pna_esballoc
pna_esballoc Attaches a message block to the data buffer.
#include
mblk_t *pna_esballoc(buffer, size, pri, frtn)
unsigned char *buffer;
int size;
int pri;
frtn_t *frtn;
Description
Arguments
Return Value
pna_esballoc allocates and attaches a message block to the user-supplied data
buffer; it uses a zero-sized data block to attach the message block to the data buffer.
buffer Points to the user-supplied data buffer.
size Specifies the size of buffer.
pri Unused by the pNA+ memory manager.
frtn Points to the free_rtn structure, which specifies a free routine
and an argument to the free routine. The free routine is called by
the pNA+ memory manager when the user-specified data buffer is
being freed. The free_rtn structure is defined in as follows:
struct free_rtn {
void (*free_func)(); /* User free routine */
void *free_arg; /* Argument to free routine */
};
typedef struct free_rtn frtn_t;
This system call returns a pointer to the message block if successful; otherwise, it
returns a null pointer.
pSOSystem System Calls 4-41
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