Index: head/include/stdio.h =================================================================== --- head/include/stdio.h (revision 104940) +++ head/include/stdio.h (revision 104941) @@ -1,456 +1,448 @@ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)stdio.h 8.5 (Berkeley) 4/29/95 * $FreeBSD$ */ #ifndef _STDIO_H_ #define _STDIO_H_ #include #include typedef __off_t fpos_t; #ifndef _SIZE_T_DECLARED typedef __size_t size_t; #define _SIZE_T_DECLARED #endif #if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE #ifndef _VA_LIST_DECLARED typedef __va_list va_list; #define _VA_LIST_DECLARED #endif #endif #ifndef NULL #define NULL 0 #endif #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; }; /* hold a buncha junk that would grow the ABI */ struct __sFILEX; /* * 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. * * NB: see WARNING above before changing the layout of this structure! */ 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 */ struct __sFILEX *_extra; /* additions to FILE to not break ABI */ 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 (see WARNING) */ } FILE; __BEGIN_DECLS -extern FILE __sF[]; extern FILE *__stdinp; extern FILE *__stdoutp; extern FILE *__stderrp; __END_DECLS #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 */ #define _IONBF 2 /* setvbuf should set unbuffered */ #define BUFSIZ 1024 /* size of buffer used by setbuf */ #define EOF (-1) /* * FOPEN_MAX is a minimum maximum, and is the number of streams that * stdio can provide without attempting to allocate further resources * (which could fail). Do not use this for anything. */ /* must be == _POSIX_STREAM_MAX */ #define FOPEN_MAX 20 /* must be <= OPEN_MAX */ #define FILENAME_MAX 1024 /* must be <= PATH_MAX */ /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */ #if __XSI_VISIBLE #define P_tmpdir "/var/tmp/" #endif #define L_tmpnam 1024 /* XXX must be == PATH_MAX */ #define TMP_MAX 308915776 #ifndef SEEK_SET #define SEEK_SET 0 /* set file offset to offset */ #endif #ifndef SEEK_CUR #define SEEK_CUR 1 /* set file offset to current plus offset */ #endif #ifndef SEEK_END #define SEEK_END 2 /* set file offset to EOF plus offset */ #endif -/* To be removed by 5.0-RELEASE */ -#if (defined(__i386__) || defined(__alpha__)) && defined(_OLD_STDIO) -#define stdin (&__sF[0]) -#define stdout (&__sF[1]) -#define stderr (&__sF[2]) -#else #define stdin __stdinp #define stdout __stdoutp #define stderr __stderrp -#endif __BEGIN_DECLS /* * Functions defined in ANSI C standard. * * XXX fgetpos(), fgets(), fopen(), fputs(), fread(), freopen(), fscanf(), * fwrite(), scanf(), sscanf(), vscanf(), and vsscanf() are missing the * restrict type-qualifier. */ void clearerr(FILE *); int fclose(FILE *); int feof(FILE *); int ferror(FILE *); int fflush(FILE *); int fgetc(FILE *); int fgetpos(FILE *, fpos_t *); char *fgets(char *, int, FILE *); FILE *fopen(const char *, const char *); int fprintf(FILE * __restrict, const char * __restrict, ...); int fputc(int, FILE *); int fputs(const char *, FILE *); size_t fread(void *, size_t, size_t, FILE *); FILE *freopen(const char *, const char *, FILE *); int fscanf(FILE *, const char *, ...); int fseek(FILE *, long, int); int fsetpos(FILE *, const fpos_t *); long ftell(FILE *); size_t fwrite(const void *, size_t, size_t, FILE *); int getc(FILE *); int getchar(void); char *gets(char *); void perror(const char *); int printf(const char * __restrict, ...); int putc(int, FILE *); int putchar(int); int puts(const char *); int remove(const char *); int rename(const char *, const char *); void rewind(FILE *); int scanf(const char *, ...); void setbuf(FILE * __restrict, char * __restrict); int setvbuf(FILE * __restrict, char * __restrict, int, size_t); int sprintf(char * __restrict, const char * __restrict, ...); int sscanf(const char *, const char *, ...); FILE *tmpfile(void); char *tmpnam(char *); int ungetc(int, FILE *); int vfprintf(FILE * __restrict, const char * __restrict, __va_list); int vprintf(const char * __restrict, __va_list); int vsprintf(char * __restrict, const char * __restrict, __va_list); #if __ISO_C_VISIBLE >= 1999 int snprintf(char * __restrict, size_t, const char * __restrict, ...) __printflike(3, 4); int vscanf(const char *, __va_list) __scanflike(1, 0); int vsnprintf(char * __restrict, size_t, const char * __restrict, __va_list) __printflike(3, 0); int vsscanf(const char *, const char *, __va_list) __scanflike(2, 0); /* * This is a #define because the function is used internally and * (unlike vfscanf) the name __vfscanf is guaranteed not to collide * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined. * * XXX missing a backing function (weak alias?) for this. */ #define vfscanf __vfscanf #endif /* * Functions defined in all versions of POSIX 1003.1. */ #if __BSD_VISIBLE || __POSIX_VISIBLE <= 199506 /* size for cuserid(3); UT_NAMESIZE + 1, see */ #define L_cuserid 17 /* legacy */ #endif #if __POSIX_VISIBLE #define L_ctermid 1024 /* size for ctermid(3); PATH_MAX */ char *ctermid(char *); FILE *fdopen(int, const char *); int fileno(FILE *); #endif /* __POSIX_VISIBLE */ #if __POSIX_VISIBLE >= 199209 int pclose(FILE *); FILE *popen(const char *, const char *); #endif #if __POSIX_VISIBLE >= 199506 int ftrylockfile(FILE *); void flockfile(FILE *); void funlockfile(FILE *); /* * These are normally used through macros as defined below, but POSIX * requires functions as well. */ int getc_unlocked(FILE *); int getchar_unlocked(void); int putc_unlocked(int, FILE *); int putchar_unlocked(int); #endif #if __POSIX_VISIBLE >= 200112 int fseeko(FILE *, __off_t, int); __off_t ftello(FILE *); #endif #if __BSD_VISIBLE || __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 int getw(FILE *); int putw(int, FILE *); #endif /* BSD or X/Open before issue 6 */ #if __XSI_VISIBLE char *tempnam(const char *, const char *); #endif /* * Routines that are purely local. */ #if __BSD_VISIBLE int asprintf(char **, const char *, ...) __printflike(2, 3); char *ctermid_r(char *); char *fgetln(FILE *, size_t *); #if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ >= 3 #define __ATTR_FORMAT_ARG __attribute__((__format_arg__(2))) #else #define __ATTR_FORMAT_ARG #endif __const char *fmtcheck(const char *, const char *) __ATTR_FORMAT_ARG; int fpurge(FILE *); void setbuffer(FILE *, char *, int); int setlinebuf(FILE *); int vasprintf(char **, const char *, __va_list) __printflike(2, 0); /* * The system error table contains messages for the first sys_nerr * positive errno values. Use strerror() or strerror_r() from * instead. */ extern __const int sys_nerr; extern __const char *__const sys_errlist[]; /* * Stdio function-access interface. */ FILE *funopen(const void *, int (*)(void *, char *, int), int (*)(void *, const char *, int), fpos_t (*)(void *, fpos_t, int), int (*)(void *)); #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0) #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0) /* * Portability hacks. See . */ #ifndef _FTRUNCATE_DECLARED #define _FTRUNCATE_DECLARED int ftruncate(int, __off_t); #endif #ifndef _LSEEK_DECLARED #define _LSEEK_DECLARED __off_t lseek(int, __off_t, int); #endif #ifndef _MMAP_DECLARED #define _MMAP_DECLARED void *mmap(void *, size_t, int, int, int, __off_t); #endif #ifndef _TRUNCATE_DECLARED #define _TRUNCATE_DECLARED int truncate(const char *, __off_t); #endif #endif /* __BSD_VISIBLE */ /* * Functions internal to the implementation. */ int __srget(FILE *); int __vfscanf(FILE *, const char *, __va_list); int __svfscanf(FILE *, const char *, __va_list); 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) #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 __END_DECLS #endif /* !_STDIO_H_ */ Index: head/lib/libc/Makefile =================================================================== --- head/lib/libc/Makefile (revision 104940) +++ head/lib/libc/Makefile (revision 104941) @@ -1,41 +1,40 @@ # @(#)Makefile 8.2 (Berkeley) 2/3/94 # $FreeBSD$ # # All library objects contain FreeBSD revision strings by default; they may be # excluded as a space-saving measure. To produce a library that does # not contain these strings, add -DSTRIP_FBSDID (see ) to CFLAGS # below. Note, there are no IDs for syscall stubs whose sources are generated. # To included legacy CSRG sccsid strings, add -DLIBC_SCCS and -DSYSLIBC_SCCS # (for system call stubs) to CFLAGS below. -DSYSLIBC_SCCS affects just the # system call stubs. LIB=c SHLIB_MAJOR= 5 -CFLAGS+=-DLIBC_MAJOR=${SHLIB_MAJOR} CFLAGS+=-I${.CURDIR}/include -I${.CURDIR}/../../include AINC= -I${.CURDIR}/${MACHINE_ARCH} CLEANFILES+=tags INSTALL_PIC_ARCHIVE= yes PRECIOUSLIB= yes # # Include make rules that are shared with libc_r. # .include "${.CURDIR}/Makefile.inc" KQSRCS= adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \ lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \ subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c KSRCS= bcmp.c ffs.c index.c mcount.c rindex.c strcat.c strcmp.c strcpy.c \ strlen.c strncpy.c libkern: libkern.gen libkern.${MACHINE_ARCH} libkern.gen: ${KQSRCS} ${KSRCS} cp -p ${.CURDIR}/quad/quad.h ${.ALLSRC} ${DESTDIR}/sys/libkern libkern.${MACHINE_ARCH}:: ${KMSRCS} .if defined(KMSRCS) && !empty(KMSRCS) cp -p ${.ALLSRC} ${DESTDIR}/sys/libkern/${MACHINE_ARCH} .endif .include Index: head/lib/libc/stdio/findfp.c =================================================================== --- head/lib/libc/stdio/findfp.c (revision 104940) +++ head/lib/libc/stdio/findfp.c (revision 104941) @@ -1,250 +1,247 @@ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)findfp.c 8.2 (Berkeley) 1/4/94"; #endif /* LIBC_SCCS and not lint */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include "libc_private.h" #include "local.h" #include "glue.h" int __sdidinit; #define NDYNAMIC 10 /* add ten more whenever necessary */ #define std(flags, file) \ {0,0,0,flags,file,{0},0,__sF+file,__sclose,__sread,__sseek,__swrite, \ {0}, __sFX + file} /* p r w flags file _bf z cookie close read seek write */ /* _ub _extra */ /* the usual - (stdin + stdout + stderr) */ static FILE usual[FOPEN_MAX - 3]; static struct __sFILEX usual_extra[FOPEN_MAX - 3]; static struct glue uglue = { NULL, FOPEN_MAX - 3, usual }; static struct __sFILEX __sFX[3]; -#if LIBC_MAJOR >= 6 -static -#endif -FILE __sF[3] = { +static FILE __sF[3] = { std(__SRD, STDIN_FILENO), std(__SWR, STDOUT_FILENO), std(__SWR|__SNBF, STDERR_FILENO) }; /* * The following kludge is done to ensure enough binary compatibility * with future versions of libc. Or rather it allows us to work with * libraries that have been built with a newer libc that defines these * symbols and expects libc to provide them. We only have need to support * i386 and alpha because they are the only "old" systems we have deployed. */ FILE *__stdinp = &__sF[0]; FILE *__stdoutp = &__sF[1]; FILE *__stderrp = &__sF[2]; struct glue __sglue = { &uglue, 3, __sF }; static struct glue *lastglue = &uglue; static struct glue * moreglue(int); static spinlock_t thread_lock = _SPINLOCK_INITIALIZER; #define THREAD_LOCK() if (__isthreaded) _SPINLOCK(&thread_lock) #define THREAD_UNLOCK() if (__isthreaded) _SPINUNLOCK(&thread_lock) #if NOT_YET #define SET_GLUE_PTR(ptr, val) atomic_set_rel_ptr(&(ptr), (uintptr_t)(val)) #else #define SET_GLUE_PTR(ptr, val) ptr = val #endif static struct glue * moreglue(n) int n; { struct glue *g; static FILE empty; static struct __sFILEX emptyx; FILE *p; struct __sFILEX *fx; g = (struct glue *)malloc(sizeof(*g) + ALIGNBYTES + n * sizeof(FILE) + n * sizeof(struct __sFILEX)); if (g == NULL) return (NULL); p = (FILE *)ALIGN(g + 1); fx = (struct __sFILEX *)&p[n]; g->next = NULL; g->niobs = n; g->iobs = p; while (--n >= 0) { *p = empty; p->_extra = fx; *p->_extra = emptyx; p++, fx++; } return (g); } /* * Find a free FILE for fopen et al. */ FILE * __sfp() { FILE *fp; int n; struct glue *g; if (!__sdidinit) __sinit(); /* * The list must be locked because a FILE may be updated. */ THREAD_LOCK(); for (g = &__sglue; g != NULL; g = g->next) { for (fp = g->iobs, n = g->niobs; --n >= 0; fp++) if (fp->_flags == 0) goto found; } THREAD_UNLOCK(); /* don't hold lock while malloc()ing. */ if ((g = moreglue(NDYNAMIC)) == NULL) return (NULL); THREAD_LOCK(); /* reacquire the lock */ SET_GLUE_PTR(lastglue->next, g); /* atomically append glue to list */ lastglue = g; /* not atomic; only accessed when locked */ fp = g->iobs; found: fp->_flags = 1; /* reserve this slot; caller sets real flags */ THREAD_UNLOCK(); fp->_p = NULL; /* no current pointer */ fp->_w = 0; /* nothing to read or write */ fp->_r = 0; fp->_bf._base = NULL; /* no buffer */ fp->_bf._size = 0; fp->_lbfsize = 0; /* not line buffered */ fp->_file = -1; /* no file */ /* fp->_cookie = ; */ /* caller sets cookie, _read/_write etc */ fp->_ub._base = NULL; /* no ungetc buffer */ fp->_ub._size = 0; fp->_lb._base = NULL; /* no line buffer */ fp->_lb._size = 0; /* fp->_lock = NULL; */ /* once set always set (reused) */ fp->_extra->orientation = 0; #ifdef notdef /* Stateful encoding/decoding is not yet supported. */ memset(&fp->_extra->wstate, 0, sizeof(mbstate_t)); memset(&fp->_extra->rstate, 0, sizeof(mbstate_t)); #endif return (fp); } /* * XXX. Force immediate allocation of internal memory. Not used by stdio, * but documented historically for certain applications. Bad applications. */ __warn_references(f_prealloc, "warning: this program uses f_prealloc(), which is not recommended."); void f_prealloc() { struct glue *g; int n; n = getdtablesize() - FOPEN_MAX + 20; /* 20 for slop. */ /* * It should be safe to walk the list without locking it; * new nodes are only added to the end and none are ever * removed. */ for (g = &__sglue; (n -= g->niobs) > 0 && g->next; g = g->next) /* void */; if ((n > 0) && ((g = moreglue(n)) != NULL)) { THREAD_LOCK(); SET_GLUE_PTR(lastglue->next, g); lastglue = g; THREAD_UNLOCK(); } } /* * exit() calls _cleanup() through *__cleanup, set whenever we * open or buffer a file. This chicanery is done so that programs * that do not use stdio need not link it all in. * * The name `_cleanup' is, alas, fairly well known outside stdio. */ void _cleanup() { /* (void) _fwalk(fclose); */ (void) _fwalk(__sflush); /* `cheating' */ } /* * __sinit() is called whenever stdio's internal variables must be set up. */ void __sinit() { int i; THREAD_LOCK(); if (__sdidinit == 0) { /* Set _extra for the usual suspects. */ for (i = 0; i < FOPEN_MAX - 3; i++) usual[i]._extra = &usual_extra[i]; /* Make sure we clean up on exit. */ __cleanup = _cleanup; /* conservative */ __sdidinit = 1; } THREAD_UNLOCK(); }