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: head/lib/libc/stdio/local.h 234799 2012-04-29 16:28:39Z das $ 39 */ 40 41 #include <sys/types.h> /* for off_t */ 42 #include <string.h> 43 #include <wchar.h> 44 #include <locale.h> 45 #include <xlocale_private.h> 46 47 #include "priv_stdio.h" 48 #include "wcio.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 struct wchar_io_data *wcio; 96 mbstate_t *st; 97 98 _SET_ORIENTATION(fp,1); 99 wcio = WCIO_GET(fp); 100 101 if (wcio == NULL) { 102 return WEOF; 103 } 104 wcio->wcio_ungetwc_inbuf = 0; 105 st = &wcio->wcio_mbstate_out; 106 107 return (__fgetwc_mbs(fp, st, &nread, locale)); 108 } 109 110 /* 111 * Prepare the given FILE for writing, and return 0 iff it 112 * can be written now. Otherwise, return EOF and set errno. 113 */ 114 #define prepwrite(fp) \ 115 ((((fp)->pub._flags & __SWR) == 0 || \ 116 ((fp)->_bf._base == NULL && ((fp)->pub._flags & __SSTR) == 0)) && \ 117 __swsetup(fp)) 118 119 /* 120 * Test whether the given stdio file has an active ungetc buffer; 121 * release such a buffer, without restoring ordinary unread data. 122 */ 123 #define HASUB(fp) ((fp)->_ub._base != NULL) 124 #define FREEUB(fp) { \ 125 if ((fp)->_ub._base != (fp)->_ubuf) \ 126 free((char *)(fp)->_ub._base); \ 127 (fp)->_ub._base = NULL; \ 128 } 129 130 /* 131 * test for an fgetln() buffer. 132 */ 133 #define HASLB(fp) ((fp)->_lb._base != NULL) 134 #define FREELB(fp) { \ 135 free((char *)(fp)->_lb._base); \ 136 (fp)->_lb._base = NULL; \ 137 } 138 139 /* 140 * Structure initializations for 'fake' FILE objects. 141 */ 142 #define FAKE_FILE { \ 143 .pub._lbfsize = 0, \ 144 .pub._fileno = -1, \ 145 ._fl_mutex = PTHREAD_MUTEX_INITIALIZER, \ 146 } 147 148 /* 149 * Set the orientation for a stream. If o > 0, the stream has wide- 150 * orientation. If o < 0, the stream has byte-orientation. 151 */ 152 #define ORIENT(fp, o) _SET_ORIENTATION(fp, o) 153