* Traverse the list of fds attached to this thread's seltd and check for * completion. */
| 1310 | * completion. |
| 1311 | */ |
| 1312 | static int |
| 1313 | selrescan(struct thread *td, fd_mask **ibits, fd_mask **obits) |
| 1314 | { |
| 1315 | struct filedesc *fdp; |
| 1316 | struct selinfo *si; |
| 1317 | struct seltd *stp; |
| 1318 | struct selfd *sfp; |
| 1319 | struct selfd *sfn; |
| 1320 | struct file *fp; |
| 1321 | fd_mask bit; |
| 1322 | int fd, ev, n, idx; |
| 1323 | int error; |
| 1324 | bool only_user; |
| 1325 | |
| 1326 | fdp = td->td_proc->p_fd; |
| 1327 | stp = td->td_sel; |
| 1328 | n = 0; |
| 1329 | only_user = FILEDESC_IS_ONLY_USER(fdp); |
| 1330 | STAILQ_FOREACH_SAFE(sfp, &stp->st_selq, sf_link, sfn) { |
| 1331 | fd = (int)(uintptr_t)sfp->sf_cookie; |
| 1332 | si = sfp->sf_si; |
| 1333 | selfdfree(stp, sfp); |
| 1334 | /* If the selinfo wasn't cleared the event didn't fire. */ |
| 1335 | if (si != NULL) |
| 1336 | continue; |
| 1337 | if (only_user) |
| 1338 | error = fget_only_user(fdp, fd, &cap_event_rights, &fp); |
| 1339 | else |
| 1340 | error = fget_unlocked(fdp, fd, &cap_event_rights, &fp); |
| 1341 | if (__predict_false(error != 0)) |
| 1342 | return (error); |
| 1343 | idx = fd / NFDBITS; |
| 1344 | bit = (fd_mask)1 << (fd % NFDBITS); |
| 1345 | ev = fo_poll(fp, selflags(ibits, idx, bit), td->td_ucred, td); |
| 1346 | if (only_user) |
| 1347 | fput_only_user(fdp, fp); |
| 1348 | else |
| 1349 | fdrop(fp, td); |
| 1350 | if (ev != 0) |
| 1351 | n += selsetbits(ibits, obits, idx, bit, ev); |
| 1352 | } |
| 1353 | stp->st_flags = 0; |
| 1354 | td->td_retval[0] = n; |
| 1355 | return (0); |
| 1356 | } |
| 1357 | |
| 1358 | /* |
| 1359 | * Perform the initial filedescriptor scan and register ourselves with |
no test coverage detected