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 __attribute__((visibility("hidden")))
  25 int     __sflush(LTTNG_UST_LFILE *);
  26
  27 __attribute__((visibility("hidden")))
  28 LTTNG_UST_LFILE *__sfp(void);
  29
  30 __attribute__((visibility("hidden")))
  31 int     __srefill(LTTNG_UST_LFILE *);
  32
  33 __attribute__((visibility("hidden")))
  34 int     __sread(void *, char *, int);
  35
  36 __attribute__((visibility("hidden")))
  37 int     __swrite(void *, const char *, int);
  38
  39 __attribute__((visibility("hidden")))
  40 fpos_t  __sseek(void *, fpos_t, int);
  41
  42 __attribute__((visibility("hidden")))
  43 int     __sclose(void *);
  44
  45 __attribute__((visibility("hidden")))
  46 void    __sinit(void);
  47
  48 __attribute__((visibility("hidden")))
  49 void    _cleanup(void);
  50
  51 __attribute__((visibility("hidden")))
  52 void    __smakebuf(LTTNG_UST_LFILE *);
  53
  54 __attribute__((visibility("hidden")))
  55 int     __swhatbuf(LTTNG_UST_LFILE *, size_t *, int *);
  56
  57 __attribute__((visibility("hidden")))
  58 int     _fwalk(int (*)(LTTNG_UST_LFILE *));
  59
  60 __attribute__((visibility("hidden")))
  61 int     __swsetup(LTTNG_UST_LFILE *);
  62
  63 __attribute__((visibility("hidden")))
  64 int     __sflags(const char *, int *);
  65
  66 __attribute__((visibility("hidden")))
  67 wint_t __fgetwc_unlock(LTTNG_UST_LFILE *);
  68
  69 __attribute__((visibility("hidden")))
  70 extern void __atexit_register_cleanup(void (*)(void));
  71
  72 __attribute__((visibility("hidden")))
  73 extern int __sdidinit;
  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 }