WebSVN – Kolibri OS – Diff – /contrib/sdk/sources/newlib/libc/stdio/makebuf.c


/*
 * Copyright (c) 1990, 2007 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
/* No user fns here.  Pesch 15apr92. */
 
#include <_ansi.h>
#include 
#include 
#include 
#include 
#include 
#include "local.h"
 
#define _DEFAULT_ASPRINTF_BUFSIZE 64
 
/*
 * Allocate a file buffer, or switch to unbuffered I/O.
 * Per the ANSI C standard, ALL tty devices default to line buffered.
 *
 * As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
 * optimization) right after the _fstat() that finds the buffer size.
 */
 
_VOID
_DEFUN(__smakebuf_r, (ptr, fp),
       struct _reent *ptr _AND
       register FILE *fp)
{
  register size_t size, couldbetty;
  register _PTR p;
#ifdef __USE_INTERNAL_STAT64
  struct stat64 st;
#else
  struct stat st;
#endif
 
  if (fp->_flags & __SNBF)
    {
      fp->_bf._base = fp->_p = fp->_nbuf;
      fp->_bf._size = 1;
      return;
    }
#ifdef __USE_INTERNAL_STAT64
  if (fp->_file < 0 || _fstat64_r (ptr, fp->_file, &st) < 0)
#else
  if (fp->_file < 0 || _fstat_r (ptr, fp->_file, &st) < 0)
#endif
    {
      couldbetty = 0;
      /* Check if we are be called by asprintf family for initial buffer.  */
      if (fp->_flags & __SMBF)
        size = _DEFAULT_ASPRINTF_BUFSIZE;
      else
        size = BUFSIZ;
#ifdef _FSEEK_OPTIMIZATION
      /* do not try to optimise fseek() */
      fp->_flags |= __SNPT;
#endif
    }
  else
    {
      couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;
#ifdef HAVE_BLKSIZE
      size = st.st_blksize <= 0 ? BUFSIZ : st.st_blksize;
#else
      size = BUFSIZ;
#endif
#ifdef _FSEEK_OPTIMIZATION
      /*
       * Optimize fseek() only if it is a regular file.
       * (The test for __sseek is mainly paranoia.)
       */
      if ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek)
	{
	  fp->_flags |= __SOPT;
#ifdef HAVE_BLKSIZE
	  fp->_blksize = st.st_blksize;
#else
	  fp->_blksize = 1024;
#endif
	}
      else
	fp->_flags |= __SNPT;
#endif
    }
  if ((p = _malloc_r (ptr, size)) == NULL)
    {
      if (!(fp->_flags & __SSTR))
	{
	  fp->_flags |= __SNBF;
	  fp->_bf._base = fp->_p = fp->_nbuf;
	  fp->_bf._size = 1;
	}
    }
  else
    {
      ptr->__cleanup = _cleanup_r;
      fp->_flags |= __SMBF;
      fp->_bf._base = fp->_p = (unsigned char *) p;
      fp->_bf._size = size;
      if (couldbetty && _isatty_r (ptr, fp->_file))
	fp->_flags |= __SLBF;
    }
}

Rev 4874	Rev 4921
1	/*	1	/*
2	* Copyright (c) 1990, 2007 The Regents of the University of California.	2	* Copyright (c) 1990, 2007 The Regents of the University of California.
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms are permitted	5	* Redistribution and use in source and binary forms are permitted
6	* provided that the above copyright notice and this paragraph are	6	* provided that the above copyright notice and this paragraph are
7	* duplicated in all such forms and that any documentation,	7	* duplicated in all such forms and that any documentation,
8	* advertising materials, and other materials related to such	8	* advertising materials, and other materials related to such
9	* distribution and use acknowledge that the software was developed	9	* distribution and use acknowledge that the software was developed
10	* by the University of California, Berkeley. The name of the	10	* by the University of California, Berkeley. The name of the
11	* University may not be used to endorse or promote products derived	11	* University may not be used to endorse or promote products derived
12	* from this software without specific prior written permission.	12	* from this software without specific prior written permission.
13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.	15	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16	*/	16	*/
17	/* No user fns here. Pesch 15apr92. */	17	/* No user fns here. Pesch 15apr92. */
18		18
19	#include <_ansi.h>	19	#include <_ansi.h>
20	#include	20	#include
21	#include	21	#include
22	#include	22	#include
23	#include	23	#include
24	#include	24	#include
25	#include "local.h"	25	#include "local.h"
26		26
27	#define _DEFAULT_ASPRINTF_BUFSIZE 64	27	#define _DEFAULT_ASPRINTF_BUFSIZE 64
28		28
29	/*	29	/*
30	* Allocate a file buffer, or switch to unbuffered I/O.	30	* Allocate a file buffer, or switch to unbuffered I/O.
31	* Per the ANSI C standard, ALL tty devices default to line buffered.	31	* Per the ANSI C standard, ALL tty devices default to line buffered.
32	*	32	*
33	* As a side effect, we set __SOPT or __SNPT (en/dis-able fseek	33	* As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
34	* optimization) right after the _fstat() that finds the buffer size.	34	* optimization) right after the _fstat() that finds the buffer size.
35	*/	35	*/
36		36
37	_VOID	37	_VOID
38	_DEFUN(__smakebuf_r, (ptr, fp),	38	_DEFUN(__smakebuf_r, (ptr, fp),
39	struct _reent *ptr _AND	39	struct _reent *ptr _AND
40	register FILE *fp)	40	register FILE *fp)
41	{	41	{
42	register size_t size, couldbetty;	42	register size_t size, couldbetty;
43	register _PTR p;	43	register _PTR p;
44	#ifdef __USE_INTERNAL_STAT64	44	#ifdef __USE_INTERNAL_STAT64
45	struct stat64 st;	45	struct stat64 st;
46	#else	46	#else
47	struct stat st;	47	struct stat st;
48	#endif	48	#endif
49		49
50	if (fp->_flags & __SNBF)	50	if (fp->_flags & __SNBF)
51	{	51	{
52	fp->_bf._base = fp->_p = fp->_nbuf;	52	fp->_bf._base = fp->_p = fp->_nbuf;
53	fp->_bf._size = 1;	53	fp->_bf._size = 1;
54	return;	54	return;
55	}	55	}
56	#ifdef __USE_INTERNAL_STAT64	56	#ifdef __USE_INTERNAL_STAT64
57	if (fp->_file < 0 \|\| _fstat64_r (ptr, fp->_file, &st) < 0)	57	if (fp->_file < 0 \|\| _fstat64_r (ptr, fp->_file, &st) < 0)
58	#else	58	#else
59	if (fp->_file < 0 \|\| _fstat_r (ptr, fp->_file, &st) < 0)	59	if (fp->_file < 0 \|\| _fstat_r (ptr, fp->_file, &st) < 0)
60	#endif	60	#endif
61	{	61	{
62	couldbetty = 0;	62	couldbetty = 0;
63	/* Check if we are be called by asprintf family for initial buffer. */	63	/* Check if we are be called by asprintf family for initial buffer. */
64	if (fp->_flags & __SMBF)	64	if (fp->_flags & __SMBF)
65	size = _DEFAULT_ASPRINTF_BUFSIZE;	65	size = _DEFAULT_ASPRINTF_BUFSIZE;
66	else	66	else
67	size = BUFSIZ;	67	size = BUFSIZ;
-		68	#ifdef _FSEEK_OPTIMIZATION
68	/* do not try to optimise fseek() */	69	/* do not try to optimise fseek() */
69	fp->_flags \|= __SNPT;	70	fp->_flags \|= __SNPT;
-		71	#endif
70	}	72	}
71	else	73	else
72	{	74	{
73	couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;	75	couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;
74	#ifdef HAVE_BLKSIZE	76	#ifdef HAVE_BLKSIZE
75	size = st.st_blksize <= 0 ? BUFSIZ : st.st_blksize;	77	size = st.st_blksize <= 0 ? BUFSIZ : st.st_blksize;
76	#else	78	#else
77	size = BUFSIZ;	79	size = BUFSIZ;
78	#endif	80	#endif
-		81	#ifdef _FSEEK_OPTIMIZATION
79	/*	82	/*
80	* Optimize fseek() only if it is a regular file.	83	* Optimize fseek() only if it is a regular file.
81	* (The test for __sseek is mainly paranoia.)	84	* (The test for __sseek is mainly paranoia.)
82	*/	85	*/
83	if ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek)	86	if ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek)
84	{	87	{
85	fp->_flags \|= __SOPT;	88	fp->_flags \|= __SOPT;
86	#ifdef HAVE_BLKSIZE	89	#ifdef HAVE_BLKSIZE
87	fp->_blksize = st.st_blksize;	90	fp->_blksize = st.st_blksize;
88	#else	91	#else
89	fp->_blksize = 1024;	92	fp->_blksize = 1024;
90	#endif	93	#endif
91	}	94	}
92	else	95	else
93	fp->_flags \|= __SNPT;	96	fp->_flags \|= __SNPT;
-		97	#endif
94	}	98	}
95	if ((p = _malloc_r (ptr, size)) == NULL)	99	if ((p = _malloc_r (ptr, size)) == NULL)
96	{	100	{
97	if (!(fp->_flags & __SSTR))	101	if (!(fp->_flags & __SSTR))
98	{	102	{
99	fp->_flags \|= __SNBF;	103	fp->_flags \|= __SNBF;
100	fp->_bf._base = fp->_p = fp->_nbuf;	104	fp->_bf._base = fp->_p = fp->_nbuf;
101	fp->_bf._size = 1;	105	fp->_bf._size = 1;
102	}	106	}
103	}	107	}
104	else	108	else
105	{	109	{
106	ptr->__cleanup = _cleanup_r;	110	ptr->__cleanup = _cleanup_r;
107	fp->_flags \|= __SMBF;	111	fp->_flags \|= __SMBF;
108	fp->_bf._base = fp->_p = (unsigned char *) p;	112	fp->_bf._base = fp->_p = (unsigned char *) p;
109	fp->_bf._size = size;	113	fp->_bf._size = size;
110	if (couldbetty && _isatty_r (ptr, fp->_file))	114	if (couldbetty && _isatty_r (ptr, fp->_file))
111	fp->_flags \|= __SLBF;	115	fp->_flags \|= __SLBF;
112	}	116	}
113	}	117	}

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(root)/contrib/sdk/sources/newlib/libc/stdio/makebuf.c – Rev 4874 → 4921