1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 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 * Copyright (c) 2011 The FreeBSD Foundation 11 * 12 * Portions of this software were developed by David Chisnall 13 * under sponsorship from the FreeBSD Foundation. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)local.h 8.3 (Berkeley) 7/3/94 40 */ 41 42 #ifndef _STDIO_LOCAL_H 43 #define _STDIO_LOCAL_H 44 45 #include <sys/types.h> /* for off_t */ 46 #include <pthread.h> 47 #include <string.h> 48 #include <wchar.h> 49 #include <locale.h> 50 51 /* 52 * Information local to this implementation of stdio, 53 * in particular, macros and private variables. 54 */ 55 56 extern int _sread(FILE *, char *, int); 57 extern int _swrite(FILE *, char const *, int); 58 extern fpos_t _sseek(FILE *, fpos_t, int); 59 extern int _ftello(FILE *, fpos_t *); 60 extern int _fseeko(FILE *, off_t, int, int); 61 extern int __fflush(FILE *fp); 62 extern void __fcloseall(void); 63 extern wint_t __fgetwc_mbs(FILE *, mbstate_t *, int *, locale_t); 64 extern wint_t __fputwc(wchar_t, FILE *, locale_t); 65 extern int __sflush(FILE *); 66 extern FILE *__sfp(void); 67 extern int __slbexpand(FILE *, size_t); 68 extern int __srefill(FILE *); 69 extern int __sread(void *, char *, int); 70 extern int __swrite(void *, char const *, int); 71 extern fpos_t __sseek(void *, fpos_t, int); 72 extern int __sclose(void *); 73 extern void __sinit(void); 74 extern void _cleanup(void); 75 extern void __smakebuf(FILE *); 76 extern int __swhatbuf(FILE *, size_t *, int *); 77 extern int _fwalk(int (*)(FILE *)); 78 extern int __svfscanf(FILE *, locale_t, const char *, __va_list); 79 extern int __swsetup(FILE *); 80 extern int __sflags(const char *, int *); 81 extern int __ungetc(int, FILE *); 82 extern wint_t __ungetwc(wint_t, FILE *, locale_t); 83 extern int __vfprintf(FILE *, locale_t, const char *, __va_list); 84 extern int __vfscanf(FILE *, const char *, __va_list); 85 extern int __vfwprintf(FILE *, locale_t, const wchar_t *, __va_list); 86 extern int __vfwscanf(FILE * __restrict, locale_t, const wchar_t * __restrict, 87 __va_list); 88 extern size_t __fread(void * __restrict buf, size_t size, size_t count, 89 FILE * __restrict fp); 90 extern int __sdidinit; 91 92 static inline wint_t 93 __fgetwc(FILE *fp, locale_t locale) 94 { 95 int nread; 96 97 return (__fgetwc_mbs(fp, &fp->_mbstate, &nread, locale)); 98 } 99 100 /* 101 * Prepare the given FILE for writing, and return 0 iff it 102 * can be written now. Otherwise, return EOF and set errno. 103 */ 104 #define prepwrite(fp) \ 105 ((((fp)->_flags & __SWR) == 0 || \ 106 ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \ 107 __swsetup(fp)) 108 109 /* 110 * Test whether the given stdio file has an active ungetc buffer; 111 * release such a buffer, without restoring ordinary unread data. 112 */ 113 #define HASUB(fp) ((fp)->_ub._base != NULL) 114 #define FREEUB(fp) { \ 115 if ((fp)->_ub._base != (fp)->_ubuf) \ 116 free((char *)(fp)->_ub._base); \ 117 (fp)->_ub._base = NULL; \ 118 } 119 120 /* 121 * test for an fgetln() buffer. 122 */ 123 #define HASLB(fp) ((fp)->_lb._base != NULL) 124 #define FREELB(fp) { \ 125 free((char *)(fp)->_lb._base); \ 126 (fp)->_lb._base = NULL; \ 127 } 128 129 /* 130 * Structure initializations for 'fake' FILE objects. 131 */ 132 #define FAKE_FILE { \ 133 ._file = -1, \ 134 ._fl_mutex = PTHREAD_MUTEX_INITIALIZER, \ 135 } 136 137 /* 138 * Set the orientation for a stream. If o > 0, the stream has wide- 139 * orientation. If o < 0, the stream has byte-orientation. 140 */ 141 #define ORIENT(fp, o) do { \ 142 if ((fp)->_orientation == 0) \ 143 (fp)->_orientation = (o); \ 144 } while (0) 145 146 void __stdio_cancel_cleanup(void *); 147 #define FLOCKFILE_CANCELSAFE(fp) \ 148 { \ 149 struct _pthread_cleanup_info __cleanup_info__; \ 150 if (__isthreaded) { \ 151 _FLOCKFILE(fp); \ 152 ___pthread_cleanup_push_imp( \ 153 __stdio_cancel_cleanup, (fp), \ 154 &__cleanup_info__); \ 155 } else { \ 156 ___pthread_cleanup_push_imp( \ 157 __stdio_cancel_cleanup, NULL, \ 158 &__cleanup_info__); \ 159 } \ 160 { 161 #define FUNLOCKFILE_CANCELSAFE() \ 162 (void)0; \ 163 } \ 164 ___pthread_cleanup_pop_imp(1); \ 165 } 166 167 #endif /* _STDIO_LOCAL_H */ 168