* XXX This was created specifically to support netncp and netsmb. This * allows the caller to specify a socket to wait for events on. It returns * 0 if any events matched and an error otherwise. There is no way to * determine which events fired. */
| 1678 | * determine which events fired. |
| 1679 | */ |
| 1680 | int |
| 1681 | selsocket(struct socket *so, int events, struct timeval *tvp, struct thread *td) |
| 1682 | { |
| 1683 | struct timeval rtv; |
| 1684 | sbintime_t asbt, precision, rsbt; |
| 1685 | int error; |
| 1686 | |
| 1687 | precision = 0; /* stupid gcc! */ |
| 1688 | if (tvp != NULL) { |
| 1689 | rtv = *tvp; |
| 1690 | if (rtv.tv_sec < 0 || rtv.tv_usec < 0 || |
| 1691 | rtv.tv_usec >= 1000000) |
| 1692 | return (EINVAL); |
| 1693 | if (!timevalisset(&rtv)) |
| 1694 | asbt = 0; |
| 1695 | else if (rtv.tv_sec <= INT32_MAX) { |
| 1696 | rsbt = tvtosbt(rtv); |
| 1697 | precision = rsbt; |
| 1698 | precision >>= tc_precexp; |
| 1699 | if (TIMESEL(&asbt, rsbt)) |
| 1700 | asbt += tc_tick_sbt; |
| 1701 | if (asbt <= SBT_MAX - rsbt) |
| 1702 | asbt += rsbt; |
| 1703 | else |
| 1704 | asbt = -1; |
| 1705 | } else |
| 1706 | asbt = -1; |
| 1707 | } else |
| 1708 | asbt = -1; |
| 1709 | seltdinit(td); |
| 1710 | /* |
| 1711 | * Iterate until the timeout expires or the socket becomes ready. |
| 1712 | */ |
| 1713 | for (;;) { |
| 1714 | selfdalloc(td, NULL); |
| 1715 | error = sopoll(so, events, NULL, td); |
| 1716 | /* error here is actually the ready events. */ |
| 1717 | if (error) |
| 1718 | return (0); |
| 1719 | error = seltdwait(td, asbt, precision); |
| 1720 | if (error) |
| 1721 | break; |
| 1722 | } |
| 1723 | seltdclear(td); |
| 1724 | /* XXX Duplicates ncp/smb behavior. */ |
| 1725 | if (error == ERESTART) |
| 1726 | error = 0; |
| 1727 | return (error); |
| 1728 | } |
| 1729 | |
| 1730 | /* |
| 1731 | * Preallocate two selfds associated with 'cookie'. Some fo_poll routines |
nothing calls this directly
no test coverage detected