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         __attribute__((visibility("hidden")));
  26
  27 LTTNG_UST_LFILE *__sfp(void)
  28         __attribute__((visibility("hidden")));
  29
  30 int     __srefill(LTTNG_UST_LFILE *)
  31         __attribute__((visibility("hidden")));
  32
  33 int     __sread(void *, char *, int)
  34         __attribute__((visibility("hidden")));
  35
  36 int     __swrite(void *, const char *, int)
  37         __attribute__((visibility("hidden")));
  38
  39 fpos_t  __sseek(void *, fpos_t, int)
  40         __attribute__((visibility("hidden")));
  41
  42 int     __sclose(void *)
  43         __attribute__((visibility("hidden")));
  44
  45 void    __sinit(void)
  46         __attribute__((visibility("hidden")));
  47
  48 void    _cleanup(void)
  49         __attribute__((visibility("hidden")));
  50
  51 void    __smakebuf(LTTNG_UST_LFILE *)
  52         __attribute__((visibility("hidden")));
  53
  54 int     __swhatbuf(LTTNG_UST_LFILE *, size_t *, int *)
  55         __attribute__((visibility("hidden")));
  56
  57 int     _fwalk(int (*)(LTTNG_UST_LFILE *))
  58         __attribute__((visibility("hidden")));
  59
  60 int     __swsetup(LTTNG_UST_LFILE *)
  61         __attribute__((visibility("hidden")));
  62
  63 int     __sflags(const char *, int *)
  64         __attribute__((visibility("hidden")));
  65
  66 wint_t __fgetwc_unlock(LTTNG_UST_LFILE *)
  67         __attribute__((visibility("hidden")));
  68
  69 extern void __atexit_register_cleanup(void (*)(void))
  70         __attribute__((visibility("hidden")));
  71
  72 extern int __sdidinit
  73         __attribute__((visibility("hidden")));
  74
  75 /*
  76  * Return true if the given LTTNG_UST_LFILE cannot be written now.
  77  */
  78 #define cantwrite(fp) \
  79         ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
  80          __swsetup(fp))
  81
  82 /*
  83  * Test whether the given stdio file has an active ungetc buffer;
  84  * release such a buffer, without restoring ordinary unread data.
  85  */
  86 #define HASUB(fp) (_UB(fp)._base != NULL)
  87 #define FREEUB(fp) { \
  88         if (_UB(fp)._base != (fp)->_ubuf) \
  89                 free(_UB(fp)._base); \
  90         _UB(fp)._base = NULL; \
  91 }
  92
  93 /*
  94  * test for an fgetln() buffer.
  95  */
  96 #define HASLB(fp) ((fp)->_lb._base != NULL)
  97 #define FREELB(fp) { \
  98         free((char *)(fp)->_lb._base); \
  99         (fp)->_lb._base = NULL; \
 100 }