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Annotation of src/include/stdio.h, Revision 1.80

1.80    ! christos    1: /*     $NetBSD: stdio.h,v 1.79 2011/07/17 20:54:34 joerg Exp $ */
1.14      cgd         2:
1.1       cgd         3: /*-
1.20      perry       4:  * Copyright (c) 1990, 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         6:  *
                      7:  * This code is derived from software contributed to Berkeley by
                      8:  * Chris Torek.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
1.53      agc        18:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        19:  *    may be used to endorse or promote products derived from this software
                     20:  *    without specific prior written permission.
                     21:  *
                     22:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     23:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     24:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     25:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     26:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     27:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     28:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     29:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     30:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     31:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     32:  * SUCH DAMAGE.
                     33:  *
1.20      perry      34:  *     @(#)stdio.h     8.5 (Berkeley) 4/29/95
1.1       cgd        35:  */
                     36:
                     37: #ifndef        _STDIO_H_
                     38: #define        _STDIO_H_
                     39:
                     40: #include <sys/cdefs.h>
1.21      kleink     41: #include <sys/featuretest.h>
1.61      kleink     42: #include <sys/ansi.h>
1.1       cgd        43:
1.12      cgd        44: #ifdef _BSD_SIZE_T_
                     45: typedef        _BSD_SIZE_T_    size_t;
                     46: #undef _BSD_SIZE_T_
1.1       cgd        47: #endif
1.74      roy        48: #ifdef _BSD_SSIZE_T_
                     49: typedef        _BSD_SSIZE_T_   ssize_t;
                     50: #undef _BSD_SSIZE_T_
                     51: #endif
1.1       cgd        52:
1.79      joerg      53: #if defined(_POSIX_C_SOURCE)
                     54: #ifndef __VA_LIST_DECLARED
                     55: typedef __va_list va_list;
                     56: #define __VA_LIST_DECLARED
                     57: #endif
                     58: #endif
                     59:
1.32      kleink     60: #include <sys/null.h>
1.1       cgd        61:
1.11      cgd        62: /*
                     63:  * This is fairly grotesque, but pure ANSI code must not inspect the
                     64:  * innards of an fpos_t anyway.  The library internally uses off_t,
                     65:  * which we assume is exactly as big as eight chars.
                     66:  */
                     67: typedef struct __sfpos {
1.33      kleink     68:        __off_t _pos;
1.80    ! christos   69:        __mbstate_t _mbstate_in, _mbstate_out;
1.11      cgd        70: } fpos_t;
1.1       cgd        71:
                     72: #define        _FSTDIO                 /* Define for new stdio with functions. */
                     73:
                     74: /*
                     75:  * NB: to fit things in six character monocase externals, the stdio
                     76:  * code uses the prefix `__s' for stdio objects, typically followed
                     77:  * by a three-character attempt at a mnemonic.
                     78:  */
                     79:
                     80: /* stdio buffers */
                     81: struct __sbuf {
                     82:        unsigned char *_base;
                     83:        int     _size;
                     84: };
                     85:
                     86: /*
                     87:  * stdio state variables.
                     88:  *
                     89:  * The following always hold:
                     90:  *
                     91:  *     if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
                     92:  *             _lbfsize is -_bf._size, else _lbfsize is 0
                     93:  *     if _flags&__SRD, _w is 0
                     94:  *     if _flags&__SWR, _r is 0
                     95:  *
                     96:  * This ensures that the getc and putc macros (or inline functions) never
                     97:  * try to write or read from a file that is in `read' or `write' mode.
                     98:  * (Moreover, they can, and do, automatically switch from read mode to
                     99:  * write mode, and back, on "r+" and "w+" files.)
                    100:  *
                    101:  * _lbfsize is used only to make the inline line-buffered output stream
                    102:  * code as compact as possible.
                    103:  *
                    104:  * _ub, _up, and _ur are used when ungetc() pushes back more characters
                    105:  * than fit in the current _bf, or when ungetc() pushes back a character
                    106:  * that does not match the previous one in _bf.  When this happens,
                    107:  * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
                    108:  * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
1.20      perry     109:  *
                    110:  * NB: see WARNING above before changing the layout of this structure!
1.1       cgd       111:  */
                    112: typedef        struct __sFILE {
                    113:        unsigned char *_p;      /* current position in (some) buffer */
                    114:        int     _r;             /* read space left for getc() */
                    115:        int     _w;             /* write space left for putc() */
1.65      christos  116:        unsigned short _flags;  /* flags, below; this FILE is free if 0 */
1.1       cgd       117:        short   _file;          /* fileno, if Unix descriptor, else -1 */
                    118:        struct  __sbuf _bf;     /* the buffer (at least 1 byte, if !NULL) */
                    119:        int     _lbfsize;       /* 0 or -_bf._size, for inline putc */
                    120:
                    121:        /* operations */
                    122:        void    *_cookie;       /* cookie passed to io functions */
1.57      perry     123:        int     (*_close)(void *);
                    124:        int     (*_read) (void *, char *, int);
1.80    ! christos  125:        __off_t (*_seek) (void *, __off_t, int);
1.57      perry     126:        int     (*_write)(void *, const char *, int);
1.1       cgd       127:
1.42      yamt      128:        /* file extension */
                    129:        struct  __sbuf _ext;
                    130:
1.1       cgd       131:        /* separate buffer for long sequences of ungetc() */
                    132:        unsigned char *_up;     /* saved _p when _p is doing ungetc data */
                    133:        int     _ur;            /* saved _r when _r is counting ungetc data */
                    134:
                    135:        /* tricks to meet minimum requirements even when malloc() fails */
                    136:        unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
                    137:        unsigned char _nbuf[1]; /* guarantee a getc() buffer */
                    138:
1.75      joerg     139:        /* Formerly used by fgetln/fgetwln; kept for binary compatibility */
                    140:        struct  __sbuf _lb__unused;
1.1       cgd       141:
                    142:        /* Unix stdio files get aligned to block boundaries on fseek() */
                    143:        int     _blksize;       /* stat.st_blksize (may be != _bf._size) */
1.80    ! christos  144:        __off_t _offset;        /* current lseek offset */
1.1       cgd       145: } FILE;
                    146:
                    147: __BEGIN_DECLS
                    148: extern FILE __sF[];
                    149: __END_DECLS
                    150:
                    151: #define        __SLBF  0x0001          /* line buffered */
                    152: #define        __SNBF  0x0002          /* unbuffered */
                    153: #define        __SRD   0x0004          /* OK to read */
                    154: #define        __SWR   0x0008          /* OK to write */
                    155:        /* RD and WR are never simultaneously asserted */
                    156: #define        __SRW   0x0010          /* open for reading & writing */
                    157: #define        __SEOF  0x0020          /* found EOF */
                    158: #define        __SERR  0x0040          /* found error */
                    159: #define        __SMBF  0x0080          /* _buf is from malloc */
                    160: #define        __SAPP  0x0100          /* fdopen()ed in append mode */
                    161: #define        __SSTR  0x0200          /* this is an sprintf/snprintf string */
1.36      enami     162: #define        __SOPT  0x0400          /* do fseek() optimization */
                    163: #define        __SNPT  0x0800          /* do not do fseek() optimization */
1.1       cgd       164: #define        __SOFF  0x1000          /* set iff _offset is in fact correct */
1.10      cgd       165: #define        __SMOD  0x2000          /* true => fgetln modified _p text */
1.27      perry     166: #define        __SALC  0x4000          /* allocate string space dynamically */
1.1       cgd       167:
                    168: /*
                    169:  * The following three definitions are for ANSI C, which took them
                    170:  * from System V, which brilliantly took internal interface macros and
                    171:  * made them official arguments to setvbuf(), without renaming them.
                    172:  * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
                    173:  *
                    174:  * Although numbered as their counterparts above, the implementation
                    175:  * does not rely on this.
                    176:  */
                    177: #define        _IOFBF  0               /* setvbuf should set fully buffered */
                    178: #define        _IOLBF  1               /* setvbuf should set line buffered */
                    179: #define        _IONBF  2               /* setvbuf should set unbuffered */
                    180:
                    181: #define        BUFSIZ  1024            /* size of buffer used by setbuf */
                    182: #define        EOF     (-1)
                    183:
                    184: /*
1.20      perry     185:  * FOPEN_MAX is a minimum maximum, and is the number of streams that
                    186:  * stdio can provide without attempting to allocate further resources
                    187:  * (which could fail).  Do not use this for anything.
1.1       cgd       188:  */
1.20      perry     189:                                /* must be == _POSIX_STREAM_MAX <limits.h> */
1.1       cgd       190: #define        FOPEN_MAX       20      /* must be <= OPEN_MAX <sys/syslimits.h> */
                    191: #define        FILENAME_MAX    1024    /* must be <= PATH_MAX <sys/syslimits.h> */
                    192:
                    193: /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
1.52      bjh21     194: #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
1.1       cgd       195: #define        P_tmpdir        "/var/tmp/"
                    196: #endif
                    197: #define        L_tmpnam        1024    /* XXX must be == PATH_MAX */
1.49      christos  198: /* Always ensure that this is consistent with <limits.h> */
                    199: #ifndef TMP_MAX
                    200: #define TMP_MAX                        308915776       /* Legacy */
                    201: #endif
1.1       cgd       202:
1.22      kleink    203: /* Always ensure that these are consistent with <fcntl.h> and <unistd.h>! */
1.1       cgd       204: #ifndef SEEK_SET
                    205: #define        SEEK_SET        0       /* set file offset to offset */
                    206: #endif
                    207: #ifndef SEEK_CUR
                    208: #define        SEEK_CUR        1       /* set file offset to current plus offset */
                    209: #endif
                    210: #ifndef SEEK_END
                    211: #define        SEEK_END        2       /* set file offset to EOF plus offset */
                    212: #endif
                    213:
                    214: #define        stdin   (&__sF[0])
                    215: #define        stdout  (&__sF[1])
                    216: #define        stderr  (&__sF[2])
                    217:
                    218: /*
                    219:  * Functions defined in ANSI C standard.
                    220:  */
                    221: __BEGIN_DECLS
1.57      perry     222: void    clearerr(FILE *);
                    223: int     fclose(FILE *);
                    224: int     feof(FILE *);
                    225: int     ferror(FILE *);
                    226: int     fflush(FILE *);
                    227: int     fgetc(FILE *);
                    228: char   *fgets(char * __restrict, int, FILE * __restrict);
1.59      kleink    229: FILE   *fopen(const char * __restrict , const char * __restrict);
1.73      christos  230: int     fprintf(FILE * __restrict , const char * __restrict, ...)
1.76      joerg     231:                __printflike(2, 3);
1.57      perry     232: int     fputc(int, FILE *);
                    233: int     fputs(const char * __restrict, FILE * __restrict);
                    234: size_t  fread(void * __restrict, size_t, size_t, FILE * __restrict);
1.59      kleink    235: FILE   *freopen(const char * __restrict, const char * __restrict,
                    236:            FILE * __restrict);
1.73      christos  237: int     fscanf(FILE * __restrict, const char * __restrict, ...)
1.76      joerg     238:                __scanflike(2, 3);
1.57      perry     239: int     fseek(FILE *, long, int);
                    240: long    ftell(FILE *);
                    241: size_t  fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
                    242: int     getc(FILE *);
                    243: int     getchar(void);
1.74      roy       244: ssize_t         getdelim(char ** __restrict, size_t * __restrict, int,
                    245:            FILE * __restrict);
                    246: ssize_t         getline(char ** __restrict, size_t * __restrict, FILE * __restrict);
1.57      perry     247: void    perror(const char *);
1.73      christos  248: int     printf(const char * __restrict, ...)
1.76      joerg     249:                __printflike(1, 2);
1.57      perry     250: int     putc(int, FILE *);
                    251: int     putchar(int);
                    252: int     puts(const char *);
                    253: int     remove(const char *);
                    254: void    rewind(FILE *);
1.73      christos  255: int     scanf(const char * __restrict, ...)
1.76      joerg     256:                __scanflike(1, 2);
1.57      perry     257: void    setbuf(FILE * __restrict, char * __restrict);
                    258: int     setvbuf(FILE * __restrict, char * __restrict, int, size_t);
1.73      christos  259: int     sscanf(const char * __restrict, const char * __restrict, ...)
1.76      joerg     260:                __scanflike(2, 3);
1.57      perry     261: FILE   *tmpfile(void);
                    262: int     ungetc(int, FILE *);
1.79      joerg     263: int     vfprintf(FILE * __restrict, const char * __restrict, __va_list)
1.76      joerg     264:                __printflike(2, 0);
1.79      joerg     265: int     vprintf(const char * __restrict, __va_list)
1.76      joerg     266:                __printflike(1, 0);
1.24      mycroft   267:
                    268: #ifndef __AUDIT__
1.57      perry     269: char   *gets(char *);
1.73      christos  270: int     sprintf(char * __restrict, const char * __restrict, ...)
1.76      joerg     271:                __printflike(2, 3);
1.57      perry     272: char   *tmpnam(char *);
                    273: int     vsprintf(char * __restrict, const char * __restrict,
1.79      joerg     274:     __va_list)
1.76      joerg     275:                __printflike(2, 0);
1.24      mycroft   276: #endif
1.21      kleink    277:
                    278: #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
1.57      perry     279: int     rename (const char *, const char *) __RENAME(__posix_rename);
1.21      kleink    280: #else
1.57      perry     281: int     rename (const char *, const char *);
1.21      kleink    282: #endif
1.1       cgd       283: __END_DECLS
                    284:
1.80    ! christos  285: #ifndef __LIBC12_SOURCE__
        !           286: int     fgetpos(FILE * __restrict, fpos_t * __restrict) __RENAME(__fgetpos50);
        !           287: int     fsetpos(FILE *, const fpos_t *) __RENAME(__fsetpos50);
        !           288: #endif
1.1       cgd       289: /*
1.29      kleink    290:  * IEEE Std 1003.1-90
1.1       cgd       291:  */
1.51      bjh21     292: #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
                    293:     defined(_NETBSD_SOURCE)
1.1       cgd       294: #define        L_ctermid       1024    /* size for ctermid(); PATH_MAX */
1.7       jtc       295: #define L_cuserid      9       /* size for cuserid(); UT_NAMESIZE + 1 */
1.1       cgd       296:
                    297: __BEGIN_DECLS
1.57      perry     298: char   *ctermid(char *);
1.40      christos  299: #ifndef __CUSERID_DECLARED
                    300: #define __CUSERID_DECLARED
                    301: /* also declared in unistd.h */
1.57      perry     302: char   *cuserid(char *);
1.40      christos  303: #endif /* __CUSERID_DECLARED */
1.57      perry     304: FILE   *fdopen(int, const char *);
                    305: int     fileno(FILE *);
1.1       cgd       306: __END_DECLS
                    307: #endif /* not ANSI */
                    308:
1.29      kleink    309: /*
                    310:  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
                    311:  */
1.51      bjh21     312: #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
                    313:     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
1.29      kleink    314: __BEGIN_DECLS
1.57      perry     315: void   flockfile(FILE *);
                    316: int    ftrylockfile(FILE *);
                    317: void   funlockfile(FILE *);
                    318: int    getc_unlocked(FILE *);
                    319: int    getchar_unlocked(void);
                    320: int    putc_unlocked(int, FILE *);
                    321: int    putchar_unlocked(int);
1.29      kleink    322: __END_DECLS
1.51      bjh21     323: #endif /* _POSIX_C_SOURCE >= 1995056 || _XOPEN_SOURCE >= 500 || ... */
1.19      jtc       324:
1.1       cgd       325: /*
1.29      kleink    326:  * Functions defined in POSIX 1003.2 and XPG2 or later.
1.1       cgd       327:  */
1.51      bjh21     328: #if (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 2 || \
                    329:     defined(_NETBSD_SOURCE)
1.1       cgd       330: __BEGIN_DECLS
1.57      perry     331: int     pclose(FILE *);
                    332: FILE   *popen(const char *, const char *);
1.22      kleink    333: __END_DECLS
                    334: #endif
                    335:
                    336: /*
1.60      kleink    337:  * Functions defined in ISO XPG4.2, ISO C99, POSIX 1003.1-2001 or later.
                    338:  */
1.67      bjh21     339: #if ((__STDC_VERSION__ - 0) >= 199901L) || \
1.60      kleink    340:     ((_POSIX_C_SOURCE - 0) >= 200112L) || \
                    341:     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
                    342:     ((_XOPEN_SOURCE - 0) >= 500) || \
                    343:     defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
1.64      mrg       344: __BEGIN_DECLS
1.60      kleink    345: int     snprintf(char * __restrict, size_t, const char * __restrict, ...)
1.76      joerg     346:                __printflike(3, 4);
1.60      kleink    347: int     vsnprintf(char * __restrict, size_t, const char * __restrict,
1.79      joerg     348:            __va_list)
1.76      joerg     349:                __printflike(3, 0);
1.64      mrg       350: __END_DECLS
1.60      kleink    351: #endif
                    352:
                    353: /*
1.22      kleink    354:  * Functions defined in XPG4.2.
                    355:  */
1.51      bjh21     356: #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
1.22      kleink    357: __BEGIN_DECLS
1.57      perry     358: int     getw(FILE *);
                    359: int     putw(int, FILE *);
1.24      mycroft   360:
                    361: #ifndef __AUDIT__
1.57      perry     362: char   *tempnam(const char *, const char *);
1.24      mycroft   363: #endif
1.22      kleink    364: __END_DECLS
                    365: #endif
1.34      kleink    366:
                    367: /*
                    368:  * X/Open CAE Specification Issue 5 Version 2
                    369:  */
1.51      bjh21     370: #if (_XOPEN_SOURCE - 0) >= 500 || defined(_LARGEFILE_SOURCE) || \
                    371:     defined(_NETBSD_SOURCE)
1.34      kleink    372: #ifndef        off_t
                    373: typedef        __off_t         off_t;
1.38      kleink    374: #define        off_t           __off_t
1.35      drochner  375: #endif /* off_t */
1.34      kleink    376:
1.36      enami     377: __BEGIN_DECLS
1.57      perry     378: int     fseeko(FILE *, off_t, int);
                    379: off_t   ftello(FILE *);
1.36      enami     380: __END_DECLS
1.51      bjh21     381: #endif /* _XOPEN_SOURCE >= 500 || _LARGEFILE_SOURCE || _NETBSD_SOURCE */
1.22      kleink    382:
                    383: /*
1.72      matt      384:  * Functions defined in ISO C99.  Still put under _NETBSD_SOURCE due to
                    385:  * backward compatible.
                    386:  */
                    387: #if defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
                    388: __BEGIN_DECLS
1.79      joerg     389: int     vscanf(const char * __restrict, __va_list)
1.76      joerg     390:                __scanflike(1, 0);
1.79      joerg     391: int     vfscanf(FILE * __restrict, const char * __restrict, __va_list)
1.76      joerg     392:                __scanflike(2, 0);
1.72      matt      393: int     vsscanf(const char * __restrict, const char * __restrict,
1.79      joerg     394:     __va_list)
1.76      joerg     395:     __scanflike(2, 0);
1.72      matt      396: __END_DECLS
                    397: #endif /* _ISOC99_SOURCE || _NETBSD_SOURCE */
                    398:
                    399: /*
1.22      kleink    400:  * Routines that are purely local.
                    401:  */
1.51      bjh21     402: #if defined(_NETBSD_SOURCE)
1.46      lukem     403:
                    404: #define        FPARSELN_UNESCESC       0x01
                    405: #define        FPARSELN_UNESCCONT      0x02
                    406: #define        FPARSELN_UNESCCOMM      0x04
                    407: #define        FPARSELN_UNESCREST      0x08
                    408: #define        FPARSELN_UNESCALL       0x0f
                    409:
1.22      kleink    410: __BEGIN_DECLS
1.57      perry     411: int     asprintf(char ** __restrict, const char * __restrict, ...)
1.76      joerg     412:                __printflike(2, 3);
1.57      perry     413: char   *fgetln(FILE * __restrict, size_t * __restrict);
1.46      lukem     414: char   *fparseln(FILE *, size_t *, size_t *, const char[3], int);
1.57      perry     415: int     fpurge(FILE *);
                    416: void    setbuffer(FILE *, char *, int);
                    417: int     setlinebuf(FILE *);
                    418: int     vasprintf(char ** __restrict, const char * __restrict,
1.79      joerg     419:     __va_list)
1.76      joerg     420:                __printflike(2, 0);
1.62      perry     421: const char *fmtcheck(const char *, const char *)
1.76      joerg     422:                __format_arg(2);
1.1       cgd       423: __END_DECLS
                    424:
                    425: /*
                    426:  * Stdio function-access interface.
                    427:  */
                    428: __BEGIN_DECLS
1.57      perry     429: FILE   *funopen(const void *,
1.1       cgd       430:                int (*)(void *, char *, int),
                    431:                int (*)(void *, const char *, int),
1.80    ! christos  432:                off_t (*)(void *, off_t, int),
1.57      perry     433:                int (*)(void *));
1.1       cgd       434: __END_DECLS
                    435: #define        fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
                    436: #define        fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
1.51      bjh21     437: #endif /* _NETBSD_SOURCE */
1.1       cgd       438:
                    439: /*
                    440:  * Functions internal to the implementation.
                    441:  */
                    442: __BEGIN_DECLS
1.57      perry     443: int    __srget(FILE *);
                    444: int    __swbuf(int, FILE *);
1.1       cgd       445: __END_DECLS
                    446:
                    447: /*
                    448:  * The __sfoo macros are here so that we can
                    449:  * define function versions in the C library.
                    450:  */
                    451: #define        __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
                    452: #if defined(__GNUC__) && defined(__STDC__)
1.63      perry     453: static __inline int __sputc(int _c, FILE *_p) {
1.1       cgd       454:        if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
                    455:                return (*_p->_p++ = _c);
                    456:        else
                    457:                return (__swbuf(_c, _p));
                    458: }
                    459: #else
                    460: /*
                    461:  * This has been tuned to generate reasonable code on the vax using pcc.
                    462:  */
                    463: #define        __sputc(c, p) \
                    464:        (--(p)->_w < 0 ? \
                    465:                (p)->_w >= (p)->_lbfsize ? \
                    466:                        (*(p)->_p = (c)), *(p)->_p != '\n' ? \
                    467:                                (int)*(p)->_p++ : \
                    468:                                __swbuf('\n', p) : \
                    469:                        __swbuf((int)(c), p) : \
                    470:                (*(p)->_p = (c), (int)*(p)->_p++))
                    471: #endif
                    472:
                    473: #define        __sfeof(p)      (((p)->_flags & __SEOF) != 0)
                    474: #define        __sferror(p)    (((p)->_flags & __SERR) != 0)
                    475: #define        __sclearerr(p)  ((void)((p)->_flags &= ~(__SERR|__SEOF)))
1.71      christos  476: #define        __sfileno(p)    \
                    477:     ((p)->_file == -1 ? -1 : (int)(unsigned short)(p)->_file)
1.1       cgd       478:
1.56      kleink    479: #ifndef __lint__
1.50      kleink    480: #if !defined(_REENTRANT) && !defined(_PTHREADS)
1.1       cgd       481: #define        feof(p)         __sfeof(p)
                    482: #define        ferror(p)       __sferror(p)
                    483: #define        clearerr(p)     __sclearerr(p)
                    484:
                    485: #define        getc(fp)        __sgetc(fp)
                    486: #define putc(x, fp)    __sputc(x, fp)
1.50      kleink    487: #endif /* !_REENTRANT && !_PTHREADS */
1.56      kleink    488: #endif /* __lint__ */
1.1       cgd       489:
                    490: #define        getchar()       getc(stdin)
                    491: #define        putchar(x)      putc(x, stdout)
1.19      jtc       492:
1.51      bjh21     493: #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
                    494:     defined(_NETBSD_SOURCE)
1.50      kleink    495: #if !defined(_REENTRANT) && !defined(_PTHREADS)
1.19      jtc       496: #define        fileno(p)       __sfileno(p)
1.50      kleink    497: #endif /* !_REENTRANT && !_PTHREADS */
1.30      kleink    498: #endif /* !_ANSI_SOURCE */
1.19      jtc       499:
1.77      christos  500: #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
1.79      joerg     501: int     vdprintf(int, const char * __restrict, __va_list)
1.77      christos  502:                __printflike(2, 0);
                    503: int     dprintf(int, const char * __restrict, ...)
                    504:                __printflike(2, 3);
                    505: #endif /* (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) */
                    506:
1.51      bjh21     507: #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
                    508:     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
1.19      jtc       509: #define getc_unlocked(fp)      __sgetc(fp)
                    510: #define putc_unlocked(x, fp)   __sputc(x, fp)
                    511:
                    512: #define getchar_unlocked()     getc_unlocked(stdin)
                    513: #define putchar_unlocked(x)    putc_unlocked(x, stdout)
1.51      bjh21     514: #endif /* _POSIX_C_SOURCE >= 199506 || _XOPEN_SOURCE >= 500 || _REENTRANT... */
1.19      jtc       515:
1.78      tnozaki   516: #if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0) >= 700 || \
                    517:     defined(_NETBSD_SOURCE)
                    518: FILE *fmemopen(void * __restrict, size_t, const char * __restrict);
                    519: #endif
                    520:
1.70      kristerw  521: #if _FORTIFY_SOURCE > 0
1.69      tls       522: #include <ssp/stdio.h>
1.70      kristerw  523: #endif
1.69      tls       524:
1.1       cgd       525: #endif /* _STDIO_H_ */

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