snprintf/local.h

   1 /*      $OpenBSD: local.h,v 1.14 2009/10/22 01:23:16 guenther Exp $     */
   2
   3 /*
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  *
   6  * Copyright (C) 1990, 1993
   7  *      The Regents of the University of California.  All rights reserved.
   8  *
   9  * This code is derived from software contributed to Berkeley by
  10  * Chris Torek.
  11  */
  12
  13 /*
  14  * Information local to this implementation of stdio,
  15  * in particular, macros and private variables.
  16  */
  17
  18 #include <stdio.h>
  19 #include <wchar.h>
  20 #include "various.h"
  21 #include "wcio.h"
  22 #include "fileext.h"
  23
  24 int     __sflush(LTTNG_UST_LFILE *);
  25 LTTNG_UST_LFILE *__sfp(void);
  26 int     __srefill(LTTNG_UST_LFILE *);
  27 int     __sread(void *, char *, int);
  28 int     __swrite(void *, const char *, int);
  29 fpos_t  __sseek(void *, fpos_t, int);
  30 int     __sclose(void *);
  31 void    __sinit(void);
  32 void    _cleanup(void);
  33 void    __smakebuf(LTTNG_UST_LFILE *);
  34 int     __swhatbuf(LTTNG_UST_LFILE *, size_t *, int *);
  35 int     _fwalk(int (*)(LTTNG_UST_LFILE *));
  36 int     __swsetup(LTTNG_UST_LFILE *);
  37 int     __sflags(const char *, int *);
  38 wint_t __fgetwc_unlock(LTTNG_UST_LFILE *);
  39
  40 extern void __atexit_register_cleanup(void (*)(void));
  41 extern int __sdidinit;
  42
  43 /*
  44  * Return true if the given LTTNG_UST_LFILE cannot be written now.
  45  */
  46 #define cantwrite(fp) \
  47         ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
  48          __swsetup(fp))
  49
  50 /*
  51  * Test whether the given stdio file has an active ungetc buffer;
  52  * release such a buffer, without restoring ordinary unread data.
  53  */
  54 #define HASUB(fp) (_UB(fp)._base != NULL)
  55 #define FREEUB(fp) { \
  56         if (_UB(fp)._base != (fp)->_ubuf) \
  57                 free(_UB(fp)._base); \
  58         _UB(fp)._base = NULL; \
  59 }
  60
  61 /*
  62  * test for an fgetln() buffer.
  63  */
  64 #define HASLB(fp) ((fp)->_lb._base != NULL)
  65 #define FREELB(fp) { \
  66         free((char *)(fp)->_lb._base); \
  67         (fp)->_lb._base = NULL; \
  68 }