1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Chris Torek. 7 * 8 * Copyright (c) 2011 The FreeBSD Foundation 9 * All rights reserved. 10 * Portions of this software were developed by David Chisnall 11 * under sponsorship from the FreeBSD Foundation. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)local.h 8.3 (Berkeley) 7/3/94 38 * $FreeBSD$ 39 */ 40 41 #ifndef _STDIO_LOCAL_H 42 #define _STDIO_LOCAL_H 43 44 #include <sys/types.h> /* for off_t */ 45 #include <pthread.h> 46 #include <string.h> 47 #include <wchar.h> 48 #include <locale.h> 49 50 /* 51 * Information local to this implementation of stdio, 52 * in particular, macros and private variables. 53 */ 54 55 extern int _sread(FILE *, char *, int); 56 extern int _swrite(FILE *, char const *, int); 57 extern fpos_t _sseek(FILE *, fpos_t, int); 58 extern int _ftello(FILE *, fpos_t *); 59 extern int _fseeko(FILE *, off_t, int, int); 60 extern int __fflush(FILE *fp); 61 extern void __fcloseall(void); 62 extern wint_t __fgetwc_mbs(FILE *, mbstate_t *, int *, locale_t); 63 extern wint_t __fputwc(wchar_t, FILE *, locale_t); 64 extern int __sflush(FILE *); 65 extern FILE *__sfp(void); 66 extern int __slbexpand(FILE *, size_t); 67 extern int __srefill(FILE *); 68 extern int __sread(void *, char *, int); 69 extern int __swrite(void *, char const *, int); 70 extern fpos_t __sseek(void *, fpos_t, int); 71 extern int __sclose(void *); 72 extern void __sinit(void); 73 extern void _cleanup(void); 74 extern void __smakebuf(FILE *); 75 extern int __swhatbuf(FILE *, size_t *, int *); 76 extern int _fwalk(int (*)(FILE *)); 77 extern int __svfscanf(FILE *, locale_t, const char *, __va_list); 78 extern int __swsetup(FILE *); 79 extern int __sflags(const char *, int *); 80 extern int __ungetc(int, FILE *); 81 extern wint_t __ungetwc(wint_t, FILE *, locale_t); 82 extern int __vfprintf(FILE *, locale_t, const char *, __va_list); 83 extern int __vfscanf(FILE *, const char *, __va_list); 84 extern int __vfwprintf(FILE *, locale_t, const wchar_t *, __va_list); 85 extern int __vfwscanf(FILE * __restrict, locale_t, const wchar_t * __restrict, 86 __va_list); 87 extern size_t __fread(void * __restrict buf, size_t size, size_t count, 88 FILE * __restrict fp); 89 extern int __sdidinit; 90 91 static inline wint_t 92 __fgetwc(FILE *fp, locale_t locale) 93 { 94 int nread; 95 96 return (__fgetwc_mbs(fp, &fp->_mbstate, &nread, locale)); 97 } 98 99 /* 100 * Prepare the given FILE for writing, and return 0 iff it 101 * can be written now. Otherwise, return EOF and set errno. 102 */ 103 #define prepwrite(fp) \ 104 ((((fp)->_flags & __SWR) == 0 || \ 105 ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \ 106 __swsetup(fp)) 107 108 /* 109 * Test whether the given stdio file has an active ungetc buffer; 110 * release such a buffer, without restoring ordinary unread data. 111 */ 112 #define HASUB(fp) ((fp)->_ub._base != NULL) 113 #define FREEUB(fp) { \ 114 if ((fp)->_ub._base != (fp)->_ubuf) \ 115 free((char *)(fp)->_ub._base); \ 116 (fp)->_ub._base = NULL; \ 117 } 118 119 /* 120 * test for an fgetln() buffer. 121 */ 122 #define HASLB(fp) ((fp)->_lb._base != NULL) 123 #define FREELB(fp) { \ 124 free((char *)(fp)->_lb._base); \ 125 (fp)->_lb._base = NULL; \ 126 } 127 128 /* 129 * Structure initializations for 'fake' FILE objects. 130 */ 131 #define FAKE_FILE { \ 132 ._file = -1, \ 133 ._fl_mutex = PTHREAD_MUTEX_INITIALIZER, \ 134 } 135 136 /* 137 * Set the orientation for a stream. If o > 0, the stream has wide- 138 * orientation. If o < 0, the stream has byte-orientation. 139 */ 140 #define ORIENT(fp, o) do { \ 141 if ((fp)->_orientation == 0) \ 142 (fp)->_orientation = (o); \ 143 } while (0) 144 145 void __stdio_cancel_cleanup(void *); 146 #define FLOCKFILE_CANCELSAFE(fp) \ 147 { \ 148 struct _pthread_cleanup_info __cleanup_info__; \ 149 if (__isthreaded) { \ 150 _FLOCKFILE(fp); \ 151 ___pthread_cleanup_push_imp( \ 152 __stdio_cancel_cleanup, (fp), \ 153 &__cleanup_info__); \ 154 } else { \ 155 ___pthread_cleanup_push_imp( \ 156 __stdio_cancel_cleanup, NULL, \ 157 &__cleanup_info__); \ 158 } \ 159 { 160 #define FUNLOCKFILE_CANCELSAFE() \ 161 (void)0; \ 162 } \ 163 ___pthread_cleanup_pop_imp(1); \ 164 } 165 166 #endif /* _STDIO_LOCAL_H */ 167