diff options
Diffstat (limited to 'newlib/libc/stdio/findfp.c')
| -rw-r--r-- | newlib/libc/stdio/findfp.c | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/newlib/libc/stdio/findfp.c b/newlib/libc/stdio/findfp.c deleted file mode 100644 index 570fd457e..000000000 --- a/newlib/libc/stdio/findfp.c +++ /dev/null @@ -1,294 +0,0 @@ -/* - * Copyright (c) 1990 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 <reent.h> -#include <stdio.h> -#include <stdlib.h> -#include <errno.h> -#include <string.h> -#include <fcntl.h> -#include <sys/lock.h> -#include "local.h" - -#ifdef _REENT_SMALL -const struct __sFILE_fake __sf_fake_stdin = - {_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL}; -const struct __sFILE_fake __sf_fake_stdout = - {_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL}; -const struct __sFILE_fake __sf_fake_stderr = - {_NULL, 0, 0, 0, 0, {_NULL, 0}, 0, _NULL}; -#endif - -static _VOID -_DEFUN(std, (ptr, flags, file, data), - FILE *ptr _AND - int flags _AND - int file _AND - struct _reent *data) -{ - ptr->_p = 0; - ptr->_r = 0; - ptr->_w = 0; - ptr->_flags = flags; - ptr->_flags2 = 0; - ptr->_file = file; - ptr->_bf._base = 0; - ptr->_bf._size = 0; - ptr->_lbfsize = 0; - memset (&ptr->_mbstate, 0, sizeof (_mbstate_t)); - ptr->_cookie = ptr; - ptr->_read = __sread; -#ifndef __LARGE64_FILES - ptr->_write = __swrite; -#else /* __LARGE64_FILES */ - ptr->_write = __swrite64; - ptr->_seek64 = __sseek64; - ptr->_flags |= __SL64; -#endif /* __LARGE64_FILES */ - ptr->_seek = __sseek; - ptr->_close = __sclose; -#if !defined(__SINGLE_THREAD__) && !defined(_REENT_SMALL) - __lock_init_recursive (ptr->_lock); - /* - * #else - * lock is already initialized in __sfp - */ -#endif - -#ifdef __SCLE - if (__stextmode (ptr->_file)) - ptr->_flags |= __SCLE; -#endif -} - -struct _glue * -_DEFUN(__sfmoreglue, (d, n), - struct _reent *d _AND - register int n) -{ - struct _glue *g; - FILE *p; - - g = (struct _glue *) _malloc_r (d, sizeof (*g) + n * sizeof (FILE)); - if (g == NULL) - return NULL; - p = (FILE *) (g + 1); - g->_next = NULL; - g->_niobs = n; - g->_iobs = p; - memset (p, 0, n * sizeof (FILE)); - return g; -} - -/* - * Find a free FILE for fopen et al. - */ - -FILE * -_DEFUN(__sfp, (d), - struct _reent *d) -{ - FILE *fp; - int n; - struct _glue *g; - - __sfp_lock_acquire (); - - if (!_GLOBAL_REENT->__sdidinit) - __sinit (_GLOBAL_REENT); - for (g = &_GLOBAL_REENT->__sglue;; g = g->_next) - { - for (fp = g->_iobs, n = g->_niobs; --n >= 0; fp++) - if (fp->_flags == 0) - goto found; - if (g->_next == NULL && - (g->_next = __sfmoreglue (d, NDYNAMIC)) == NULL) - break; - } - __sfp_lock_release (); - d->_errno = ENOMEM; - return NULL; - -found: - fp->_file = -1; /* no file */ - fp->_flags = 1; /* reserve this slot; caller sets real flags */ - fp->_flags2 = 0; -#ifndef __SINGLE_THREAD__ - __lock_init_recursive (fp->_lock); -#endif - __sfp_lock_release (); - - 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 */ - memset (&fp->_mbstate, 0, sizeof (_mbstate_t)); - /* fp->_cookie = <any>; */ /* 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; - - return fp; -} - -/* - * 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 -_DEFUN(_cleanup_r, (ptr), - struct _reent *ptr) -{ - _CAST_VOID _fwalk(ptr, fclose); - /* _CAST_VOID _fwalk (ptr, fflush); */ /* `cheating' */ -} - -#ifndef _REENT_ONLY -_VOID -_DEFUN_VOID(_cleanup) -{ - _cleanup_r (_GLOBAL_REENT); -} -#endif - -/* - * __sinit() is called whenever stdio's internal variables must be set up. - */ - -_VOID -_DEFUN(__sinit, (s), - struct _reent *s) -{ - __sinit_lock_acquire (); - - if (s->__sdidinit) - { - __sinit_lock_release (); - return; - } - - /* make sure we clean up on exit */ - s->__cleanup = _cleanup_r; /* conservative */ - s->__sdidinit = 1; - - s->__sglue._next = NULL; -#ifndef _REENT_SMALL - s->__sglue._niobs = 3; - s->__sglue._iobs = &s->__sf[0]; -#else - s->__sglue._niobs = 0; - s->__sglue._iobs = NULL; - s->_stdin = __sfp(s); - s->_stdout = __sfp(s); - s->_stderr = __sfp(s); -#endif - - std (s->_stdin, __SRD, 0, s); - - /* On platforms that have true file system I/O, we can verify - whether stdout is an interactive terminal or not, as part of - __smakebuf on first use of the stream. For all other platforms, - we will default to line buffered mode here. Technically, POSIX - requires both stdin and stdout to be line-buffered, but tradition - leaves stdin alone on systems without fcntl. */ -#ifdef HAVE_FCNTL - std (s->_stdout, __SWR, 1, s); -#else - std (s->_stdout, __SWR | __SLBF, 1, s); -#endif - - /* POSIX requires stderr to be opened for reading and writing, even - when the underlying fd 2 is write-only. */ - std (s->_stderr, __SRW | __SNBF, 2, s); - - __sinit_lock_release (); -} - -#ifndef __SINGLE_THREAD__ - -__LOCK_INIT_RECURSIVE(static, __sfp_lock); -__LOCK_INIT_RECURSIVE(static, __sinit_lock); - -_VOID -_DEFUN_VOID(__sfp_lock_acquire) -{ - __lock_acquire_recursive (__sfp_lock); -} - -_VOID -_DEFUN_VOID(__sfp_lock_release) -{ - __lock_release_recursive (__sfp_lock); -} - -_VOID -_DEFUN_VOID(__sinit_lock_acquire) -{ - __lock_acquire_recursive (__sinit_lock); -} - -_VOID -_DEFUN_VOID(__sinit_lock_release) -{ - __lock_release_recursive (__sinit_lock); -} - -/* Walkable file locking routine. */ -static int -_DEFUN(__fp_lock, (ptr), - FILE * ptr) -{ - _flockfile (ptr); - - return 0; -} - -/* Walkable file unlocking routine. */ -static int -_DEFUN(__fp_unlock, (ptr), - FILE * ptr) -{ - _funlockfile (ptr); - - return 0; -} - -_VOID -_DEFUN_VOID(__fp_lock_all) -{ - __sfp_lock_acquire (); - - _CAST_VOID _fwalk (_REENT, __fp_lock); -} - -_VOID -_DEFUN_VOID(__fp_unlock_all) -{ - _CAST_VOID _fwalk (_REENT, __fp_unlock); - - __sfp_lock_release (); -} -#endif |