lib/libasyn/asyn_close.c

   1 /*      asyn_close() - forcefully forget about a file descriptor
   2  *                                                      Author: Kees J. Bot
   3  *                                                              7 Jul 1997
   4  */
   5 #include "asyn.h"
   6
   7 int asyn_close(asynchio_t *asyn, int fd)
   8 /* Stop caring about any async operations on this file descriptor. */
   9 {
  10         asynfd_t *afd;
  11         int op;
  12
  13         if ((unsigned) fd >= FD_SETSIZE) { errno= EBADF; return -1; }
  14
  15         afd= &asyn->asyn_afd[fd];
  16
  17         for (op= 0; op < SEL_NR; op++) {
  18                 afd->afd_state[op]= IDLE;
  19                 FD_CLR(fd, &asyn->asyn_fdset[op]);
  20         }
  21         afd->afd_seen= 0;
  22         asyn->asyn_more++;
  23         return 0;
  24 }