external/ibm-public/postfix/dist/src/util/dummy_write.c

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      dummy_write 3
   6 /* SUMMARY
   7 /*      dummy write operation
   8 /* SYNOPSIS
   9 /*      #include <iostuff.h>
  10 /*
  11 /*      ssize_t dummy_write(fd, buf, buf_len, timeout, context)
  12 /*      int     fd;
  13 /*      void    *buf;
  14 /*      size_t  len;
  15 /*      int     timeout;
  16 /*      void    *context;
  17 /* DESCRIPTION
  18 /*      dummy_write() implements a data sink without side effects.
  19 /*
  20 /*      Arguments:
  21 /* .IP fd
  22 /*      File descriptor whose value is logged when verbose logging
  23 /*      is turned on.
  24 /* .IP buf
  25 /*      Write buffer pointer. Not used.
  26 /* .IP buf_len
  27 /*      Write buffer size. Its value is logged when verbose logging is
  28 /*      turned on.
  29 /* .IP timeout
  30 /*      The deadline in seconds. Not used.
  31 /* .IP context
  32 /*      Application context. Not used.
  33 /* DIAGNOSTICS
  34 /*      None.
  35 /* LICENSE
  36 /* .ad
  37 /* .fi
  38 /*      The Secure Mailer license must be distributed with this software.
  39 /* AUTHOR(S)
  40 /*      Wietse Venema
  41 /*      IBM T.J. Watson Research
  42 /*      P.O. Box 704
  43 /*      Yorktown Heights, NY 10598, USA
  44 /*--*/
  45
  46 /* System library. */
  47
  48 #include <sys_defs.h>
  49
  50 /* Utility library. */
  51
  52 #include <msg.h>
  53 #include <iostuff.h>
  54
  55 /* dummy_write - dummy write operation */
  56
  57 ssize_t dummy_write(int fd, void *unused_buf, size_t len,
  58                             int unused_timeout, void *unused_context)
  59 {
  60     if (msg_verbose)
  61         msg_info("dummy_write: fd %d, len %lu", fd, (unsigned long) len);
  62     return (len);
  63 }