close.c

   1 /*
   2  * Copyright (C) 2012-2020 all contributors <cmogstored-public@yhbt.net>
   3  * License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt>
   4  */
   5 #include "cmogstored.h"
   6 void mog_close(int fd)
   7 {
   8         if (close(fd) == 0)
   9                 return;
  10
  11         switch (errno) {
  12         case ECONNRESET:
  13                 /*
  14                  * FreeBSD (and other BSDs) may return ECONNRESET on close(),
  15                  * but the file descriptor _does_ seem to be released.
  16                  * Retrying close() will break since we create descriptors
  17                  * in different threads
  18                  */
  19         case EINTR: return; /* nothing we can do */
  20         case EBADF:
  21                 /* EBADF would be a disaster since we use threads */
  22                 syslog(LOG_CRIT, "BUG: attempted to close(fd=%d)", fd);
  23                 assert(0 && fd && "won't attempt to continue on bad close()");
  24         default: /* EIO, nothing we can do... */
  25                 syslog(LOG_ERR, "close(fd=%d) failed: %m", fd);
  26         }
  27 }