/*
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/*
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* Copyright (c) 1990 The Regents of the University of California.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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* All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms are permitted
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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*/
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/* No user fns here. Pesch 15apr92. */
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/* No user fns here. Pesch 15apr92. */
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|
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#include <_ansi.h>
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#include <_ansi.h>
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#include <reent.h>
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#include <reent.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <errno.h>
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#include <string.h>
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#include <string.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <sys/lock.h>
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#include <sys/lock.h>
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#include "local.h"
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#include "local.h"
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|
|
#ifdef _REENT_SMALL
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#ifdef _REENT_SMALL
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const struct __sFILE_fake __sf_fake_stdin =
|
const struct __sFILE_fake __sf_fake_stdin =
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{_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL};
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{_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL};
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const struct __sFILE_fake __sf_fake_stdout =
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const struct __sFILE_fake __sf_fake_stdout =
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{_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL};
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{_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL};
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const struct __sFILE_fake __sf_fake_stderr =
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const struct __sFILE_fake __sf_fake_stderr =
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{_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL};
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{_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL};
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#endif
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#endif
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|
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static _VOID
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static _VOID
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_DEFUN(std, (ptr, flags, file, data),
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_DEFUN(std, (ptr, flags, file, data),
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FILE *ptr _AND
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FILE *ptr _AND
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int flags _AND
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int flags _AND
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int file _AND
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int file _AND
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struct _reent *data)
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struct _reent *data)
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{
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{
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ptr->_p = 0;
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ptr->_p = 0;
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ptr->_r = 0;
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ptr->_r = 0;
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ptr->_w = 0;
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ptr->_w = 0;
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ptr->_flags = flags;
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ptr->_flags = flags;
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ptr->_flags2 = 0;
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ptr->_flags2 = 0;
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ptr->_file = file;
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ptr->_file = file;
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ptr->_bf._base = 0;
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ptr->_bf._base = 0;
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ptr->_bf._size = 0;
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ptr->_bf._size = 0;
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ptr->_lbfsize = 0;
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ptr->_lbfsize = 0;
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memset (&ptr->_mbstate, 0, sizeof (_mbstate_t));
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memset (&ptr->_mbstate, 0, sizeof (_mbstate_t));
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ptr->_cookie = ptr;
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ptr->_cookie = ptr;
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ptr->_read = __sread;
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ptr->_read = __sread;
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#ifndef __LARGE64_FILES
|
#ifndef __LARGE64_FILES
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ptr->_write = __swrite;
|
ptr->_write = __swrite;
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#else /* __LARGE64_FILES */
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#else /* __LARGE64_FILES */
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ptr->_write = __swrite64;
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ptr->_write = __swrite64;
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ptr->_seek64 = __sseek64;
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ptr->_seek64 = __sseek64;
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ptr->_flags |= __SL64;
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ptr->_flags |= __SL64;
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#endif /* __LARGE64_FILES */
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#endif /* __LARGE64_FILES */
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ptr->_seek = __sseek;
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ptr->_seek = __sseek;
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ptr->_close = __sclose;
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ptr->_close = __sclose;
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#if !defined(__SINGLE_THREAD__) && !defined(_REENT_SMALL)
|
#if !defined(__SINGLE_THREAD__) && !defined(_REENT_SMALL)
|
__lock_init_recursive (ptr->_lock);
|
__lock_init_recursive (ptr->_lock);
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/*
|
/*
|
* #else
|
* #else
|
* lock is already initialized in __sfp
|
* lock is already initialized in __sfp
|
*/
|
*/
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#endif
|
#endif
|
|
|
#ifdef __SCLE
|
#ifdef __SCLE
|
if (__stextmode (ptr->_file))
|
if (__stextmode (ptr->_file))
|
ptr->_flags |= __SCLE;
|
ptr->_flags |= __SCLE;
|
#endif
|
#endif
|
}
|
}
|
|
|
struct _glue *
|
struct _glue *
|
_DEFUN(__sfmoreglue, (d, n),
|
_DEFUN(__sfmoreglue, (d, n),
|
struct _reent *d _AND
|
struct _reent *d _AND
|
register int n)
|
register int n)
|
{
|
{
|
struct _glue *g;
|
struct _glue *g;
|
FILE *p;
|
FILE *p;
|
|
|
g = (struct _glue *) _malloc_r (d, sizeof (*g) + n * sizeof (FILE));
|
g = (struct _glue *) _malloc_r (d, sizeof (*g) + n * sizeof (FILE));
|
if (g == NULL)
|
if (g == NULL)
|
return NULL;
|
return NULL;
|
p = (FILE *) (g + 1);
|
p = (FILE *) (g + 1);
|
g->_next = NULL;
|
g->_next = NULL;
|
g->_niobs = n;
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g->_niobs = n;
|
g->_iobs = p;
|
g->_iobs = p;
|
memset (p, 0, n * sizeof (FILE));
|
memset (p, 0, n * sizeof (FILE));
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return g;
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return g;
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}
|
}
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|
|
/*
|
/*
|
* Find a free FILE for fopen et al.
|
* Find a free FILE for fopen et al.
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*/
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*/
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|
|
FILE *
|
FILE *
|
_DEFUN(__sfp, (d),
|
_DEFUN(__sfp, (d),
|
struct _reent *d)
|
struct _reent *d)
|
{
|
{
|
FILE *fp;
|
FILE *fp;
|
int n;
|
int n;
|
struct _glue *g;
|
struct _glue *g;
|
|
|
__sfp_lock_acquire ();
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__sfp_lock_acquire ();
|
|
|
if (!_GLOBAL_REENT->__sdidinit)
|
if (!_GLOBAL_REENT->__sdidinit)
|
__sinit (_GLOBAL_REENT);
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__sinit (_GLOBAL_REENT);
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for (g = &_GLOBAL_REENT->__sglue;; g = g->_next)
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for (g = &_GLOBAL_REENT->__sglue;; g = g->_next)
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{
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{
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for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
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for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++)
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if (fp->_flags == 0)
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if (fp->_flags == 0)
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goto found;
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goto found;
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if (g->_next == NULL &&
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if (g->_next == NULL &&
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(g->_next = __sfmoreglue (d, NDYNAMIC)) == NULL)
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(g->_next = __sfmoreglue (d, NDYNAMIC)) == NULL)
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break;
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break;
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}
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}
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__sfp_lock_release ();
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__sfp_lock_release ();
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d->_errno = ENOMEM;
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d->_errno = ENOMEM;
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return NULL;
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return NULL;
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|
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found:
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found:
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fp->_file = -1; /* no file */
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fp->_file = -1; /* no file */
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fp->_flags = 1; /* reserve this slot; caller sets real flags */
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fp->_flags = 1; /* reserve this slot; caller sets real flags */
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fp->_flags2 = 0;
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fp->_flags2 = 0;
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#ifndef __SINGLE_THREAD__
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#ifndef __SINGLE_THREAD__
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__lock_init_recursive (fp->_lock);
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__lock_init_recursive (fp->_lock);
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#endif
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#endif
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__sfp_lock_release ();
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__sfp_lock_release ();
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|
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fp->_p = NULL; /* no current pointer */
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fp->_p = NULL; /* no current pointer */
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fp->_w = 0; /* nothing to read or write */
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fp->_w = 0; /* nothing to read or write */
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fp->_r = 0;
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fp->_r = 0;
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fp->_bf._base = NULL; /* no buffer */
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fp->_bf._base = NULL; /* no buffer */
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fp->_bf._size = 0;
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fp->_bf._size = 0;
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fp->_lbfsize = 0; /* not line buffered */
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fp->_lbfsize = 0; /* not line buffered */
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memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
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memset (&fp->_mbstate, 0, sizeof (_mbstate_t));
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/* fp->_cookie = <any>; */ /* caller sets cookie, _read/_write etc */
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/* fp->_cookie = <any>; */ /* caller sets cookie, _read/_write etc */
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fp->_ub._base = NULL; /* no ungetc buffer */
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fp->_ub._base = NULL; /* no ungetc buffer */
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fp->_ub._size = 0;
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fp->_ub._size = 0;
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fp->_lb._base = NULL; /* no line buffer */
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fp->_lb._base = NULL; /* no line buffer */
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fp->_lb._size = 0;
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fp->_lb._size = 0;
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|
|
return fp;
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return fp;
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}
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}
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|
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/*
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/*
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* exit() calls _cleanup() through *__cleanup, set whenever we
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* exit() calls _cleanup() through *__cleanup, set whenever we
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* open or buffer a file. This chicanery is done so that programs
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* open or buffer a file. This chicanery is done so that programs
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* that do not use stdio need not link it all in.
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* that do not use stdio need not link it all in.
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*
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*
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* The name `_cleanup' is, alas, fairly well known outside stdio.
|
* The name `_cleanup' is, alas, fairly well known outside stdio.
|
*/
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*/
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|
|
_VOID
|
_VOID
|
_DEFUN(_cleanup_r, (ptr),
|
_DEFUN(_cleanup_r, (ptr),
|
struct _reent *ptr)
|
struct _reent *ptr)
|
{
|
{
|
_CAST_VOID _fwalk(ptr, fclose);
|
_CAST_VOID _fwalk(ptr, fclose);
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/* _CAST_VOID _fwalk (ptr, fflush); */ /* `cheating' */
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/* _CAST_VOID _fwalk (ptr, fflush); */ /* `cheating' */
|
}
|
}
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|
|
#ifndef _REENT_ONLY
|
#ifndef _REENT_ONLY
|
_VOID
|
_VOID
|
_DEFUN_VOID(_cleanup)
|
_DEFUN_VOID(_cleanup)
|
{
|
{
|
_cleanup_r (_GLOBAL_REENT);
|
_cleanup_r (_GLOBAL_REENT);
|
}
|
}
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* __sinit() is called whenever stdio's internal variables must be set up.
|
* __sinit() is called whenever stdio's internal variables must be set up.
|
*/
|
*/
|
|
|
_VOID
|
_VOID
|
_DEFUN(__sinit, (s),
|
_DEFUN(__sinit, (s),
|
struct _reent *s)
|
struct _reent *s)
|
{
|
{
|
__sinit_lock_acquire ();
|
__sinit_lock_acquire ();
|
|
|
if (s->__sdidinit)
|
if (s->__sdidinit)
|
{
|
{
|
__sinit_lock_release ();
|
__sinit_lock_release ();
|
return;
|
return;
|
}
|
}
|
|
|
/* make sure we clean up on exit */
|
/* make sure we clean up on exit */
|
s->__cleanup = _cleanup_r; /* conservative */
|
s->__cleanup = _cleanup_r; /* conservative */
|
s->__sdidinit = 1;
|
s->__sdidinit = 1;
|
|
|
s->__sglue._next = NULL;
|
s->__sglue._next = NULL;
|
#ifndef _REENT_SMALL
|
#ifndef _REENT_SMALL
|
s->__sglue._niobs = 3;
|
s->__sglue._niobs = 3;
|
s->__sglue._iobs = &s->__sf[0];
|
s->__sglue._iobs = &s->__sf[0];
|
#else
|
#else
|
s->__sglue._niobs = 0;
|
s->__sglue._niobs = 0;
|
s->__sglue._iobs = NULL;
|
s->__sglue._iobs = NULL;
|
s->_stdin = __sfp(s);
|
s->_stdin = __sfp(s);
|
s->_stdout = __sfp(s);
|
s->_stdout = __sfp(s);
|
s->_stderr = __sfp(s);
|
s->_stderr = __sfp(s);
|
#endif
|
#endif
|
|
|
std (s->_stdin, __SRD, 0, s);
|
std (s->_stdin, __SRD, 0, s);
|
|
|
/* On platforms that have true file system I/O, we can verify
|
/* On platforms that have true file system I/O, we can verify
|
whether stdout is an interactive terminal or not, as part of
|
whether stdout is an interactive terminal or not, as part of
|
__smakebuf on first use of the stream. For all other platforms,
|
__smakebuf on first use of the stream. For all other platforms,
|
we will default to line buffered mode here. Technically, POSIX
|
we will default to line buffered mode here. Technically, POSIX
|
requires both stdin and stdout to be line-buffered, but tradition
|
requires both stdin and stdout to be line-buffered, but tradition
|
leaves stdin alone on systems without fcntl. */
|
leaves stdin alone on systems without fcntl. */
|
#ifdef HAVE_FCNTL
|
#ifdef HAVE_FCNTL
|
std (s->_stdout, __SWR, 1, s);
|
std (s->_stdout, __SWR, 1, s);
|
#else
|
#else
|
std (s->_stdout, __SWR | __SLBF, 1, s);
|
std (s->_stdout, __SWR | __SLBF, 1, s);
|
#endif
|
#endif
|
|
|
/* POSIX requires stderr to be opened for reading and writing, even
|
/* POSIX requires stderr to be opened for reading and writing, even
|
when the underlying fd 2 is write-only. */
|
when the underlying fd 2 is write-only. */
|
std (s->_stderr, __SRW | __SNBF, 2, s);
|
std (s->_stderr, __SRW | __SNBF, 2, s);
|
|
|
__sinit_lock_release ();
|
__sinit_lock_release ();
|
}
|
}
|
|
|
#ifndef __SINGLE_THREAD__
|
#ifndef __SINGLE_THREAD__
|
|
|
__LOCK_INIT_RECURSIVE(static, __sfp_lock);
|
__LOCK_INIT_RECURSIVE(static, __sfp_lock);
|
__LOCK_INIT_RECURSIVE(static, __sinit_lock);
|
__LOCK_INIT_RECURSIVE(static, __sinit_lock);
|
|
|
_VOID
|
_VOID
|
_DEFUN_VOID(__sfp_lock_acquire)
|
_DEFUN_VOID(__sfp_lock_acquire)
|
{
|
{
|
__lock_acquire_recursive (__sfp_lock);
|
__lock_acquire_recursive (__sfp_lock);
|
}
|
}
|
|
|
_VOID
|
_VOID
|
_DEFUN_VOID(__sfp_lock_release)
|
_DEFUN_VOID(__sfp_lock_release)
|
{
|
{
|
__lock_release_recursive (__sfp_lock);
|
__lock_release_recursive (__sfp_lock);
|
}
|
}
|
|
|
_VOID
|
_VOID
|
_DEFUN_VOID(__sinit_lock_acquire)
|
_DEFUN_VOID(__sinit_lock_acquire)
|
{
|
{
|
__lock_acquire_recursive (__sinit_lock);
|
__lock_acquire_recursive (__sinit_lock);
|
}
|
}
|
|
|
_VOID
|
_VOID
|
_DEFUN_VOID(__sinit_lock_release)
|
_DEFUN_VOID(__sinit_lock_release)
|
{
|
{
|
__lock_release_recursive (__sinit_lock);
|
__lock_release_recursive (__sinit_lock);
|
}
|
}
|
|
|
/* Walkable file locking routine. */
|
/* Walkable file locking routine. */
|
static int
|
static int
|
_DEFUN(__fp_lock, (ptr),
|
_DEFUN(__fp_lock, (ptr),
|
FILE * ptr)
|
FILE * ptr)
|
{
|
{
|
_flockfile (ptr);
|
_flockfile (ptr);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Walkable file unlocking routine. */
|
/* Walkable file unlocking routine. */
|
static int
|
static int
|
_DEFUN(__fp_unlock, (ptr),
|
_DEFUN(__fp_unlock, (ptr),
|
FILE * ptr)
|
FILE * ptr)
|
{
|
{
|
_funlockfile (ptr);
|
_funlockfile (ptr);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
_VOID
|
_VOID
|
_DEFUN_VOID(__fp_lock_all)
|
_DEFUN_VOID(__fp_lock_all)
|
{
|
{
|
__sfp_lock_acquire ();
|
__sfp_lock_acquire ();
|
|
|
_CAST_VOID _fwalk (_REENT, __fp_lock);
|
_CAST_VOID _fwalk (_REENT, __fp_lock);
|
}
|
}
|
|
|
_VOID
|
_VOID
|
_DEFUN_VOID(__fp_unlock_all)
|
_DEFUN_VOID(__fp_unlock_all)
|
{
|
{
|
_CAST_VOID _fwalk (_REENT, __fp_unlock);
|
_CAST_VOID _fwalk (_REENT, __fp_unlock);
|
|
|
__sfp_lock_release ();
|
__sfp_lock_release ();
|
}
|
}
|
#endif
|
#endif
|
|
|
