static int
gfarm_iobuffer_read_session_x(struct gfarm_iobuffer *b, void *cookie, int fd,
void *data, int length, int do_timeout)
{
struct io_gfsl *io = cookie;
int rv;
int msec = do_timeout ? gfarm_ctxp->network_receive_timeout * 1000
: GFARM_GSS_TIMEOUT_INFINITE;
if (io->buffer == NULL) {
int flag = fcntl(fd, F_GETFL, NULL);
/* temporary drop O_NONBLOCK flag to prevent EAGAIN */
if (flag & O_NONBLOCK)
fcntl(fd, F_SETFL, flag & ~O_NONBLOCK);
rv = gfarmSecSessionReceiveInt8(io->session,
&io->buffer, &io->residual, msec);
if (flag & O_NONBLOCK)
fcntl(fd, F_SETFL, flag);
if (rv <= 0) {
/* XXX - interpret io->session->gssLastStat */
/* XXX - set GFARM_ERR_BROKEN_PIPE to reconnect */
gfarm_iobuffer_set_error(b, GFARM_ERR_BROKEN_PIPE);
return (rv);
}
io->p = 0;
}
if (io->residual <= length) {
rv = io->residual;
memcpy(data, &io->buffer[io->p], rv);
free(io->buffer);
io->buffer = NULL;
io->p = io->residual = 0;
} else {
rv = length;
memcpy(data, &io->buffer[io->p], rv);
io->p += rv; io->residual -= rv;
}
return (rv);
}
int
gfarm_iobuffer_read_secsession_op(struct gfarm_iobuffer *b,
void *cookie, int fd, void *data, int length)
{
struct io_gfsl *io = cookie;
int rv;
if (io->buffer == NULL) {
int flag = fcntl(fd, F_GETFL, NULL);
/* temporary drop O_NONBLOCK flag to prevent EAGAIN */
if (flag & O_NONBLOCK)
fcntl(fd, F_SETFL, flag & ~O_NONBLOCK);
rv = gfarmSecSessionReceiveInt8(io->session,
&io->buffer, &io->residual);
if (flag & O_NONBLOCK)
fcntl(fd, F_SETFL, flag);
if (rv <= 0) {
/* XXX - interpret io->session->gssLastStat */
gfarm_iobuffer_set_error(b, GFARM_ERR_UNKNOWN);
return (rv);
}
io->p = 0;
}
if (io->residual <= length) {
rv = io->residual;
memcpy(data, &io->buffer[io->p], rv);
free(io->buffer);
io->buffer = NULL;
io->p = io->residual = 0;
} else {
rv = length;
memcpy(data, &io->buffer[io->p], rv);
io->p += rv; io->residual -= rv;
}
return (rv);
}
