posix_clientutils.c

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#include <errno.h>

#include <hipc/posix/ioutils.h>
#include <hipc/posix/clientutils.h>

enum HIPC_errno hipcPosixReadMsg(void *arg, hipc_msg msg)
{
    int const *const fd_p = arg;
    ssize_t i;

    errno = 0;
    i = hipcPosixReadExactly(*fd_p, msg, HIPC_MSGHDR_SIZE);
    if (0 >= i) {
        return HIPC_ERR_IO_READ;
    }
    if (0 < hipcMsgBdySize(msg)) {
        i = hipcPosixReadExactly(*fd_p, &msg[HIPC_MSGHDR_SIZE],
                                 hipcMsgBdySize(msg));
        if (0 >= i) {
            return HIPC_ERR_IO_READ;
        }
    }

    return HIPC_SUCCESS;
}

enum HIPC_errno hipcPosixWriteMsg(void *arg, const hipc_msg msg)
{
    int const *const fd_p = arg;

    errno = 0;
    if (-1 == hipcPosixWriteExactly(*fd_p, msg, hipcMsgTotalSize(msg))) {
        return HIPC_ERR_IO_WRITE;
    }

    return HIPC_SUCCESS;
}