contrib/sendmail-8.13.4/libsm/fwalk.c

   1 /*
   2  * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  * Copyright (c) 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Chris Torek.
   9  *
  10  * By using this file, you agree to the terms and conditions set
  11  * forth in the LICENSE file which can be found at the top level of
  12  * the sendmail distribution.
  13  */
  14
  15 #include <sm/gen.h>
  16 SM_RCSID("@(#)$Id: fwalk.c,v 1.21 2001/09/11 04:04:48 gshapiro Exp $")
  17 #include <errno.h>
  18 #include <sm/io.h>
  19 #include "local.h"
  20 #include "glue.h"
  21
  22 /*
  23 **  SM_FWALK -- apply a function to all found-open file pointers
  24 **
  25 **      Parameters:
  26 **              function -- a function vector to be applied
  27 **              timeout -- time to complete actions (milliseconds)
  28 **
  29 **      Returns:
  30 **              The (binary) OR'd result of each function call
  31 */
  32
  33 int
  34 sm_fwalk(function, timeout)
  35         int (*function) __P((SM_FILE_T *, int *));
  36         int *timeout;
  37 {
  38         register SM_FILE_T *fp;
  39         register int n, ret;
  40         register struct sm_glue *g;
  41         int fptimeout;
  42
  43         ret = 0;
  44         for (g = &smglue; g != NULL; g = g->gl_next)
  45         {
  46                 for (fp = g->gl_iobs, n = g->gl_niobs; --n >= 0; fp++)
  47                 {
  48                         if (fp->f_flags != 0)
  49                         {
  50                                 if (*timeout == SM_TIME_DEFAULT)
  51                                         fptimeout = fp->f_timeout;
  52                                 else
  53                                         fptimeout = *timeout;
  54                                 if (fptimeout == SM_TIME_IMMEDIATE)
  55                                         continue; /* skip it */
  56                                 ret |= (*function)(fp, &fptimeout);
  57                         }
  58                 }
  59         }
  60         return ret;
  61 }