From 4dc0c0c4e5f76c22b39976dd381e04699ab0f09d Mon Sep 17 00:00:00 2001 From: Jeff Johnston Date: Wed, 14 Jun 2006 20:49:11 +0000 Subject: 2006-06-14 Jeff Johnston * libc/include/stdio.h: Add new reentrant I/O prototypes for read/write functions. Change getc/putc macros to have reentrant underlying macros/functions. This includes __sgetc_raw_r, __sgetc_r, and __sputc_r. * libc/stdio/fgetc.c: Fix and/or add reentrant version to call new reentrant I/O functions/macros for reading/writing. * libc/stdio/fgets.c: Ditto. * libc/stdio/fputc.c: Ditto. * libc/stdio/fputs.c: Ditto. * libc/stdio/fread.c: Ditto. * libc/stdio/fseek.c: Ditto. * libc/stdio64/fseeko64.c: Ditto. * libc/stdio/fwrite.c: Ditto. * libc/stdio/getc.c: Ditto. * libc/stdio/getc_u.c: Ditto. * libc/stdio/getchar.c: Ditto. * libc/stdio/getchar_u.c: Ditto. * libc/stdio/putc.c: Ditto. * libc/stdio/putc_u.c: Ditto. * libc/stdio/putchar.c: Ditto. * libc/stdio/puts.c: Ditto. * libc/stdio/vfprintf.c: Ditto. * libc/stdio/vfscanf.c: Ditto. * libc/stdio/fvwrite.c: Change __sfvwrite into reentrant __sfvwrite_r. Change all previous callers of __sfvwrite. Set errno to EBADF and set error flag on if attempt is made to write to file that does not allow writing. * libc/stdio/fvwrite.h: Fix new reentrant prototypes. * libc/stdio/local.h: Ditto. * libc/stdio/refill.c: Turn __srefill into reentrant __srefill_r. Set errno to EBADF and the error flag on if attempt is made to read unreadable file. Change all previous callers of __srefill. * libc/stdio/rget.c * libc/stdio/wbuf.c: Turn __swbuf into reentrant __swbuf_r. Change all previous callers of __swbuf. * libc/sys/linux/machine/i386/huge_val.h: Ifdef out file contents since huge value macros are already defined correctly for i386 by . --- newlib/libc/stdio/fread.c | 46 +++++++++++++++++++++++++++++++++++++++------- 1 file changed, 39 insertions(+), 7 deletions(-) (limited to 'newlib/libc/stdio/fread.c') diff --git a/newlib/libc/stdio/fread.c b/newlib/libc/stdio/fread.c index 1354c04ba..8df577006 100644 --- a/newlib/libc/stdio/fread.c +++ b/newlib/libc/stdio/fread.c @@ -21,12 +21,19 @@ FUNCTION INDEX fread +INDEX + _fread_r ANSI_SYNOPSIS #include size_t fread(void *<[buf]>, size_t <[size]>, size_t <[count]>, FILE *<[fp]>); + #include + size_t _fread_r(struct _reent *<[ptr]>, void *<[buf]>, + size_t <[size]>, size_t <[count]>, + FILE *<[fp]>); + TRAD_SYNOPSIS #include size_t fread(<[buf]>, <[size]>, <[count]>, <[fp]>) @@ -35,6 +42,14 @@ TRAD_SYNOPSIS size_t <[count]>; FILE *<[fp]>; + #include + size_t _fread_r(<[ptr]>, <[buf]>, <[size]>, <[count]>, <[fp]>) + struct _reent *<[ptr]>; + char *<[buf]>; + size_t <[size]>; + size_t <[count]>; + FILE *<[fp]>; + DESCRIPTION <> attempts to copy, from the file or stream identified by <[fp]>, <[count]> elements (each of size <[size]>) into memory, @@ -44,6 +59,9 @@ starting at <[buf]>. <> may copy fewer elements than <> also advances the file position indicator (if any) for <[fp]> by the number of @emph{characters} actually read. +<<_fread_r>> is simply the reentrant version of <> that +takes an additional reentrant structure pointer argument: <[ptr]>. + RETURNS The result of <> is the number of elements it succeeded in reading. @@ -63,7 +81,8 @@ Supporting OS subroutines required: <>, <>, <>, #ifdef __SCLE static size_t -_DEFUN(crlf, (fp, buf, count, eof), +_DEFUN(crlf_r, (ptr, fp, buf, count, eof), + struct _reent * ptr _AND FILE * fp _AND char * buf _AND size_t count _AND @@ -86,7 +105,7 @@ _DEFUN(crlf, (fp, buf, count, eof), { if (*s == '\r') { - int c = __sgetc_raw (fp); + int c = __sgetc_raw_r (ptr, fp); if (c == '\n') *s = '\n'; else @@ -98,7 +117,7 @@ _DEFUN(crlf, (fp, buf, count, eof), while (d < e) { - r = getc (fp); + r = _getc_r (ptr, fp); if (r == EOF) return count - (e-d); *d++ = r; @@ -111,7 +130,8 @@ _DEFUN(crlf, (fp, buf, count, eof), #endif size_t -_DEFUN(fread, (buf, size, count, fp), +_DEFUN(_fread_r, (ptr, buf, size, count, fp), + struct _reent * ptr _AND _PTR buf _AND size_t size _AND size_t count _AND @@ -125,7 +145,7 @@ _DEFUN(fread, (buf, size, count, fp), if ((resid = count * size) == 0) return 0; - CHECK_INIT(_REENT); + CHECK_INIT(ptr); _flockfile (fp); if (fp->_r < 0) @@ -162,7 +182,7 @@ _DEFUN(fread, (buf, size, count, fp), fp->_bf._base = p; fp->_bf._size = resid; fp->_p = p; - rc = __srefill (fp); + rc = __srefill_r (ptr, fp); /* restore fp buffering back to original state */ fp->_bf._base = old_base; fp->_bf._size = old_size; @@ -194,7 +214,7 @@ _DEFUN(fread, (buf, size, count, fp), /* fp->_r = 0 ... done in __srefill */ p += r; resid -= r; - if (__srefill (fp)) + if (__srefill_r (ptr, fp)) { /* no more input: return partial result */ #ifdef __SCLE @@ -224,3 +244,15 @@ _DEFUN(fread, (buf, size, count, fp), _funlockfile (fp); return count; } + +#ifndef _REENT_ONLY +size_t +_DEFUN(fread, (buf, size, count, fp), + _PTR buf _AND + size_t size _AND + size_t count _AND + FILE * fp) +{ + return _fread_r (_REENT, buf, size, count, fp); +} +#endif -- cgit v1.2.3