usr/src/cmd/sendmail/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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  16
  17 #include <sm/gen.h>
  18 SM_RCSID("@(#)$Id: fwalk.c,v 1.19 2001/03/02 03:22:18 ca Exp $")
  19 #include <errno.h>
  20 #include <sm/io.h>
  21 #include "local.h"
  22 #include "glue.h"
  23
  24 /*
  25 **  SM_FWALK -- apply a function to all found-open file pointers
  26 **
  27 **      Parameters:
  28 **              function -- a function vector to be applied
  29 **              timeout -- time to complete actions (milliseconds)
  30 **
  31 **      Returns:
  32 **              The (binary) OR'd result of each function call
  33 */
  34
  35 int
  36 sm_fwalk(function, timeout)
  37         int (*function) __P((SM_FILE_T *, int *));
  38         int *timeout;
  39 {
  40         register SM_FILE_T *fp;
  41         register int n, ret;
  42         register struct sm_glue *g;
  43         int fptimeout;
  44
  45         ret = 0;
  46         for (g = &smglue; g != NULL; g = g->gl_next)
  47         {
  48                 for (fp = g->gl_iobs, n = g->gl_niobs; --n >= 0; fp++)
  49                 {
  50                         if (fp->f_flags != 0)
  51                         {
  52                                 if (*timeout == SM_TIME_DEFAULT)
  53                                         fptimeout = fp->f_timeout;
  54                                 else
  55                                         fptimeout = *timeout;
  56                                 if (fptimeout == SM_TIME_IMMEDIATE)
  57                                         continue; /* skip it */
  58                                 ret |= (*function)(fp, &fptimeout);
  59                         }
  60                 }
  61         }
  62         return ret;
  63 }