Index: include/stdio.h =================================================================== RCS file: /usr/cvs/src/include/stdio.h,v retrieving revision 1.64 diff -u -r1.64 stdio.h --- include/stdio.h 17 Apr 2008 22:17:53 -0000 1.64 +++ include/stdio.h 2 May 2008 14:52:22 -0000 @@ -60,84 +60,8 @@ #define _FSTDIO /* Define for new stdio with functions. */ -/* - * NB: to fit things in six character monocase externals, the stdio - * code uses the prefix `__s' for stdio objects, typically followed - * by a three-character attempt at a mnemonic. - */ - -/* stdio buffers */ -struct __sbuf { - unsigned char *_base; - int _size; -}; - -/* - * stdio state variables. - * - * The following always hold: - * - * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), - * _lbfsize is -_bf._size, else _lbfsize is 0 - * if _flags&__SRD, _w is 0 - * if _flags&__SWR, _r is 0 - * - * This ensures that the getc and putc macros (or inline functions) never - * try to write or read from a file that is in `read' or `write' mode. - * (Moreover, they can, and do, automatically switch from read mode to - * write mode, and back, on "r+" and "w+" files.) - * - * _lbfsize is used only to make the inline line-buffered output stream - * code as compact as possible. - * - * _ub, _up, and _ur are used when ungetc() pushes back more characters - * than fit in the current _bf, or when ungetc() pushes back a character - * that does not match the previous one in _bf. When this happens, - * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff - * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. - * - * Certain members of __sFILE are accessed directly via macros or - * inline functions. To preserve ABI compat, these members must not - * be disturbed. These members are marked below with (*). - */ -typedef struct __sFILE { - unsigned char *_p; /* (*) current position in (some) buffer */ - int _r; /* (*) read space left for getc() */ - int _w; /* (*) write space left for putc() */ - short _flags; /* (*) flags, below; this FILE is free if 0 */ - short _file; /* (*) fileno, if Unix descriptor, else -1 */ - struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */ - int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */ - - /* operations */ - void *_cookie; /* cookie passed to io functions */ - int (*_close)(void *); - int (*_read)(void *, char *, int); - fpos_t (*_seek)(void *, fpos_t, int); - int (*_write)(void *, const char *, int); - - /* separate buffer for long sequences of ungetc() */ - struct __sbuf _ub; /* ungetc buffer */ - unsigned char *_up; /* saved _p when _p is doing ungetc data */ - int _ur; /* saved _r when _r is counting ungetc data */ - - /* tricks to meet minimum requirements even when malloc() fails */ - unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ - unsigned char _nbuf[1]; /* guarantee a getc() buffer */ - - /* separate buffer for fgetln() when line crosses buffer boundary */ - struct __sbuf _lb; /* buffer for fgetln() */ - - /* Unix stdio files get aligned to block boundaries on fseek() */ - int _blksize; /* stat.st_blksize (may be != _bf._size) */ - fpos_t _offset; /* current lseek offset */ - - struct pthread_mutex *_fl_mutex; /* used for MT-safety */ - struct pthread *_fl_owner; /* current owner */ - int _fl_count; /* recursive lock count */ - int _orientation; /* orientation for fwide() */ - __mbstate_t _mbstate; /* multibyte conversion state */ -} FILE; +struct __sFILE; +typedef struct __sFILE FILE; #ifndef _STDSTREAM_DECLARED __BEGIN_DECLS @@ -148,32 +72,11 @@ #define _STDSTREAM_DECLARED #endif -#define __SLBF 0x0001 /* line buffered */ -#define __SNBF 0x0002 /* unbuffered */ -#define __SRD 0x0004 /* OK to read */ -#define __SWR 0x0008 /* OK to write */ - /* RD and WR are never simultaneously asserted */ -#define __SRW 0x0010 /* open for reading & writing */ -#define __SEOF 0x0020 /* found EOF */ -#define __SERR 0x0040 /* found error */ -#define __SMBF 0x0080 /* _buf is from malloc */ -#define __SAPP 0x0100 /* fdopen()ed in append mode */ -#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ -#define __SOPT 0x0400 /* do fseek() optimization */ -#define __SNPT 0x0800 /* do not do fseek() optimization */ -#define __SOFF 0x1000 /* set iff _offset is in fact correct */ -#define __SMOD 0x2000 /* true => fgetln modified _p text */ -#define __SALC 0x4000 /* allocate string space dynamically */ -#define __SIGN 0x8000 /* ignore this file in _fwalk */ - /* * The following three definitions are for ANSI C, which took them * from System V, which brilliantly took internal interface macros and * made them official arguments to setvbuf(), without renaming them. * Hence, these ugly _IOxxx names are *supposed* to appear in user code. - * - * Although numbered as their counterparts above, the implementation - * does not rely on this. */ #define _IOFBF 0 /* setvbuf should set fully buffered */ #define _IOLBF 1 /* setvbuf should set line buffered */ @@ -301,8 +204,8 @@ void funlockfile(FILE *); /* - * These are normally used through macros as defined below, but POSIX - * requires functions as well. + * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 + * B.8.2.7 for the rationale behind the *_unlocked() functions. */ int getc_unlocked(FILE *); int getchar_unlocked(void); @@ -385,77 +288,6 @@ #endif #endif /* __BSD_VISIBLE */ -/* - * Functions internal to the implementation. - */ -int __srget(FILE *); -int __swbuf(int, FILE *); - -/* - * The __sfoo macros are here so that we can - * define function versions in the C library. - */ -#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) -#if defined(__GNUC__) && defined(__STDC__) -static __inline int __sputc(int _c, FILE *_p) { - if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) - return (*_p->_p++ = _c); - else - return (__swbuf(_c, _p)); -} -#else -/* - * This has been tuned to generate reasonable code on the vax using pcc. - */ -#define __sputc(c, p) \ - (--(p)->_w < 0 ? \ - (p)->_w >= (p)->_lbfsize ? \ - (*(p)->_p = (c)), *(p)->_p != '\n' ? \ - (int)*(p)->_p++ : \ - __swbuf('\n', p) : \ - __swbuf((int)(c), p) : \ - (*(p)->_p = (c), (int)*(p)->_p++)) -#endif - -#define __sfeof(p) (((p)->_flags & __SEOF) != 0) -#define __sferror(p) (((p)->_flags & __SERR) != 0) -#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) -#define __sfileno(p) ((p)->_file) - -extern int __isthreaded; - -#define feof(p) (!__isthreaded ? __sfeof(p) : (feof)(p)) -#define ferror(p) (!__isthreaded ? __sferror(p) : (ferror)(p)) -#define clearerr(p) (!__isthreaded ? __sclearerr(p) : (clearerr)(p)) - -#if __POSIX_VISIBLE -#define fileno(p) (!__isthreaded ? __sfileno(p) : (fileno)(p)) -#endif - -#define getc(fp) (!__isthreaded ? __sgetc(fp) : (getc)(fp)) -#define putc(x, fp) (!__isthreaded ? __sputc(x, fp) : (putc)(x, fp)) - -#define getchar() getc(stdin) -#define putchar(x) putc(x, stdout) - -#if __BSD_VISIBLE -/* - * See ISO/IEC 9945-1 ANSI/IEEE Std 1003.1 Second Edition 1996-07-12 - * B.8.2.7 for the rationale behind the *_unlocked() macros. - */ -#define feof_unlocked(p) __sfeof(p) -#define ferror_unlocked(p) __sferror(p) -#define clearerr_unlocked(p) __sclearerr(p) -#define fileno_unlocked(p) __sfileno(p) -#endif -#if __POSIX_VISIBLE >= 199506 -#define getc_unlocked(fp) __sgetc(fp) -#define putc_unlocked(x, fp) __sputc(x, fp) - -#define getchar_unlocked() getc_unlocked(stdin) -#define putchar_unlocked(x) putc_unlocked(x, stdout) -#endif - #if __BSD_VISIBLE int renameat(int, const char *, int, const char *); #endif Index: lib/libc/stdio/Makefile.inc =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/Makefile.inc,v retrieving revision 1.37 diff -u -r1.37 Makefile.inc --- lib/libc/stdio/Makefile.inc 22 Apr 2006 15:09:15 -0000 1.37 +++ lib/libc/stdio/Makefile.inc 2 May 2008 00:20:47 -0000 @@ -16,7 +16,7 @@ refill.c remove.c rewind.c rget.c scanf.c setbuf.c setbuffer.c \ setvbuf.c snprintf.c sprintf.c sscanf.c stdio.c swprintf.c swscanf.c \ tempnam.c tmpfile.c \ - tmpnam.c ungetc.c ungetwc.c unlocked.c vasprintf.c vfprintf.c \ + tmpnam.c ungetc.c ungetwc.c vasprintf.c vfprintf.c \ vfscanf.c \ vfwprintf.c vfwscanf.c vprintf.c vscanf.c vsnprintf.c vsprintf.c \ vsscanf.c \ Index: lib/libc/stdio/clrerr.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/clrerr.c,v retrieving revision 1.10 diff -u -r1.10 clrerr.c --- lib/libc/stdio/clrerr.c 9 Jan 2007 00:28:06 -0000 1.10 +++ lib/libc/stdio/clrerr.c 2 May 2008 00:42:15 -0000 @@ -39,8 +39,10 @@ #include "namespace.h" #include #include "un-namespace.h" +#include "local.h" #include "libc_private.h" -#undef clearerr + +#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) void clearerr(fp) @@ -50,3 +52,10 @@ __sclearerr(fp); FUNLOCKFILE(fp); } + +void +clearerr_unlocked(FILE *fp) +{ + + __sclearerr(fp); +} Index: lib/libc/stdio/feof.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/feof.c,v retrieving revision 1.10 diff -u -r1.10 feof.c --- lib/libc/stdio/feof.c 9 Jan 2007 00:28:06 -0000 1.10 +++ lib/libc/stdio/feof.c 2 May 2008 00:42:26 -0000 @@ -39,9 +39,10 @@ #include "namespace.h" #include #include "un-namespace.h" +#include "local.h" #include "libc_private.h" -#undef feof +#define __sfeof(p) (((p)->_flags & __SEOF) != 0) int feof(FILE *fp) @@ -53,3 +54,10 @@ FUNLOCKFILE(fp); return (ret); } + +int +feof_unlocked(FILE *fp) +{ + + return (__sfeof(fp)); +} Index: lib/libc/stdio/ferror.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/ferror.c,v retrieving revision 1.10 diff -u -r1.10 ferror.c --- lib/libc/stdio/ferror.c 9 Jan 2007 00:28:06 -0000 1.10 +++ lib/libc/stdio/ferror.c 2 May 2008 00:42:41 -0000 @@ -39,10 +39,9 @@ #include "namespace.h" #include #include "un-namespace.h" +#include "local.h" #include "libc_private.h" -#undef ferror - int ferror(FILE *fp) { @@ -53,3 +52,10 @@ FUNLOCKFILE(fp); return (ret); } + +int +ferror_unlocked(FILE *fp) +{ + + return (__sferror(fp)); +} Index: lib/libc/stdio/fileno.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/fileno.c,v retrieving revision 1.11 diff -u -r1.11 fileno.c --- lib/libc/stdio/fileno.c 9 Jan 2007 00:28:06 -0000 1.11 +++ lib/libc/stdio/fileno.c 2 May 2008 00:42:50 -0000 @@ -39,9 +39,10 @@ #include "namespace.h" #include #include "un-namespace.h" +#include "local.h" #include "libc_private.h" -#undef fileno +#define __sfileno(p) ((p)->_file) int fileno(FILE *fp) @@ -54,3 +55,10 @@ return (fd); } + +int +fileno_unlocked(FILE *fp) +{ + + return (__sfileno(fp)); +} Index: lib/libc/stdio/getc.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/getc.c,v retrieving revision 1.14 diff -u -r1.14 getc.c --- lib/libc/stdio/getc.c 9 Jan 2007 00:28:06 -0000 1.14 +++ lib/libc/stdio/getc.c 2 May 2008 00:44:01 -0000 @@ -42,8 +42,6 @@ #include "libc_private.h" #include "local.h" -#undef getc - int getc(FILE *fp) { @@ -55,3 +53,10 @@ FUNLOCKFILE(fp); return (retval); } + +int +getc_unlocked(FILE *fp) +{ + + return (__sgetc(fp)); +} Index: lib/libc/stdio/getchar.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/getchar.c,v retrieving revision 1.13 diff -u -r1.13 getchar.c --- lib/libc/stdio/getchar.c 9 Jan 2007 00:28:06 -0000 1.13 +++ lib/libc/stdio/getchar.c 2 May 2008 13:20:46 -0000 @@ -45,8 +45,6 @@ #include "local.h" #include "libc_private.h" -#undef getchar - int getchar() { @@ -58,3 +56,10 @@ FUNLOCKFILE(stdin); return (retval); } + +int +getchar_unlocked(void) +{ + + return (__sgetc(stdin)); +} Index: lib/libc/stdio/local.h =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/local.h,v retrieving revision 1.31 diff -u -r1.31 local.h --- lib/libc/stdio/local.h 17 Apr 2008 22:17:54 -0000 1.31 +++ lib/libc/stdio/local.h 2 May 2008 00:41:25 -0000 @@ -39,10 +39,106 @@ #include /* - * Information local to this implementation of stdio, - * in particular, macros and private variables. + * Information local to this implementation of stdio, in particular, + * macros, private functions, private variables, and the definition of + * FILE. + * + * NB: to fit things in six character monocase externals, the stdio + * code uses the prefix `__s' for stdio objects, typically followed + * by a three-character attempt at a mnemonic. */ +/* stdio buffers */ +struct __sbuf { + unsigned char *_base; + int _size; +}; + +/* + * stdio state variables. + * + * The following always hold: + * + * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR), + * _lbfsize is -_bf._size, else _lbfsize is 0 + * if _flags&__SRD, _w is 0 + * if _flags&__SWR, _r is 0 + * + * This ensures that the getc and putc macros (or inline functions) never + * try to write or read from a file that is in `read' or `write' mode. + * (Moreover, they can, and do, automatically switch from read mode to + * write mode, and back, on "r+" and "w+" files.) + * + * _lbfsize is used only to make the inline line-buffered output stream + * code as compact as possible. + * + * _ub, _up, and _ur are used when ungetc() pushes back more characters + * than fit in the current _bf, or when ungetc() pushes back a character + * that does not match the previous one in _bf. When this happens, + * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff + * _ub._base!=NULL) and _up and _ur save the current values of _p and _r. + * + * Certain members of __sFILE are accessed directly via macros or + * inline functions. To preserve ABI compat, these members must not + * be disturbed. These members are marked below with (*). + */ +struct __sFILE { + unsigned char *_p; /* (*) current position in (some) buffer */ + int _r; /* (*) read space left for getc() */ + int _w; /* (*) write space left for putc() */ + short _flags; /* (*) flags, below; this FILE is free if 0 */ + short _file; /* (*) fileno, if Unix descriptor, else -1 */ + struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */ + int _lbfsize; /* (*) 0 or -_bf._size, for inline putc */ + + /* operations */ + void *_cookie; /* cookie passed to io functions */ + int (*_close)(void *); + int (*_read)(void *, char *, int); + fpos_t (*_seek)(void *, fpos_t, int); + int (*_write)(void *, const char *, int); + + /* separate buffer for long sequences of ungetc() */ + struct __sbuf _ub; /* ungetc buffer */ + unsigned char *_up; /* saved _p when _p is doing ungetc data */ + int _ur; /* saved _r when _r is counting ungetc data */ + + /* tricks to meet minimum requirements even when malloc() fails */ + unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ + unsigned char _nbuf[1]; /* guarantee a getc() buffer */ + + /* separate buffer for fgetln() when line crosses buffer boundary */ + struct __sbuf _lb; /* buffer for fgetln() */ + + /* Unix stdio files get aligned to block boundaries on fseek() */ + int _blksize; /* stat.st_blksize (may be != _bf._size) */ + fpos_t _offset; /* current lseek offset */ + + pthread_mutex_t _fl_mutex; /* used for MT-safety */ + pthread_t _fl_owner; /* current owner */ + int _fl_count; /* recursive lock count */ + int _orientation; /* orientation for fwide() */ + mbstate_t _mbstate; /* multibyte conversion state */ +}; + +#define __SLBF 0x0001 /* line buffered */ +#define __SNBF 0x0002 /* unbuffered */ +#define __SRD 0x0004 /* OK to read */ +#define __SWR 0x0008 /* OK to write */ + /* RD and WR are never simultaneously asserted */ +#define __SRW 0x0010 /* open for reading & writing */ +#define __SEOF 0x0020 /* found EOF */ +#define __SERR 0x0040 /* found error */ +#define __SMBF 0x0080 /* _buf is from malloc */ +#define __SAPP 0x0100 /* fdopen()ed in append mode */ +#define __SSTR 0x0200 /* this is an sprintf/snprintf string */ +#define __SOPT 0x0400 /* do fseek() optimization */ +#define __SNPT 0x0800 /* do not do fseek() optimization */ +#define __SOFF 0x1000 /* set iff _offset is in fact correct */ +#define __SMOD 0x2000 /* true => fgetln modified _p text */ +#define __SALC 0x4000 /* allocate string space dynamically */ +#define __SIGN 0x8000 /* ignore this file in _fwalk */ + extern int _sread(FILE *, char *, int); extern int _swrite(FILE *, char const *, int); extern fpos_t _sseek(FILE *, fpos_t, int); @@ -57,6 +153,8 @@ extern int __slbexpand(FILE *, size_t); extern int __srefill(FILE *); extern int __sread(void *, char *, int); +extern int __srget(FILE *); +extern int __swbuf(int, FILE *); extern int __swrite(void *, char const *, int); extern fpos_t __sseek(void *, fpos_t, int); extern int __sclose(void *); @@ -81,6 +179,38 @@ /* + * Get and store individual characters from a file stream. + */ +#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) +#if defined(__GNUC__) && defined(__STDC__) +static __inline int +__sputc(int _c, FILE *_p) +{ + if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) + return (*_p->_p++ = _c); + else + return (__swbuf(_c, _p)); +} +#else +/* + * This has been tuned to generate reasonable code on the vax using pcc. + */ +#define __sputc(c, p) \ + (--(p)->_w < 0 ? \ + (p)->_w >= (p)->_lbfsize ? \ + (*(p)->_p = (c)), *(p)->_p != '\n' ? \ + (int)*(p)->_p++ : \ + __swbuf('\n', p) : \ + __swbuf((int)(c), p) : \ + (*(p)->_p = (c), (int)*(p)->_p++)) +#endif + +/* + * Return true if the file stream has encountered an error. + */ +#define __sferror(p) (((p)->_flags & __SERR) != 0) + +/* * Prepare the given FILE for writing, and return 0 iff it * can be written now. Otherwise, return EOF and set errno. */ Index: lib/libc/stdio/putc.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/putc.c,v retrieving revision 1.14 diff -u -r1.14 putc.c --- lib/libc/stdio/putc.c 9 Jan 2007 00:28:07 -0000 1.14 +++ lib/libc/stdio/putc.c 2 May 2008 00:42:09 -0000 @@ -42,8 +42,6 @@ #include "local.h" #include "libc_private.h" -#undef putc - int putc(c, fp) int c; @@ -57,3 +55,10 @@ FUNLOCKFILE(fp); return (retval); } + +int +putc_unlocked(int ch, FILE *fp) +{ + + return (__sputc(ch, fp)); +} Index: lib/libc/stdio/putchar.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/putchar.c,v retrieving revision 1.14 diff -u -r1.14 putchar.c --- lib/libc/stdio/putchar.c 9 Jan 2007 00:28:07 -0000 1.14 +++ lib/libc/stdio/putchar.c 2 May 2008 13:20:56 -0000 @@ -42,8 +42,6 @@ #include "local.h" #include "libc_private.h" -#undef putchar - /* * A subroutine version of the macro putchar */ @@ -61,3 +59,10 @@ FUNLOCKFILE(so); return (retval); } + +int +putchar_unlocked(int ch) +{ + + return (__sputc(ch, stdout)); +} Index: lib/libc/stdio/xprintf.c =================================================================== RCS file: /usr/cvs/src/lib/libc/stdio/xprintf.c,v retrieving revision 1.6 diff -u -r1.6 xprintf.c --- lib/libc/stdio/xprintf.c 17 Apr 2008 22:17:54 -0000 1.6 +++ lib/libc/stdio/xprintf.c 2 May 2008 00:43:28 -0000 @@ -33,7 +33,7 @@ * $FreeBSD: src/lib/libc/stdio/xprintf.c,v 1.6 2008/04/17 22:17:54 jhb Exp $ */ -#include +#include "namespace.h" #include #include #include @@ -46,7 +46,8 @@ #include #include #include -#include +#include "un-namespace.h" +#include "local.h" #include "printf.h" #include "fvwrite.h"