+++ /dev/null
-/*\r
- Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials are licensed and made available\r
- under the terms and conditions of the BSD License that accompanies this\r
- distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
- * Copyright (c) 1990, 1993\r
- * The Regents of the University of California. All rights reserved.\r
- *\r
- * This code is derived from software contributed to Berkeley by\r
- * Chris Torek.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- * 3. Neither the name of the University nor the names of its contributors\r
- * may be used to endorse or promote products derived from this software\r
- * without specific prior written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
- * SUCH DAMAGE.\r
-\r
- NetBSD: refill.c,v 1.13 2003/08/07 16:43:30 agc Exp\r
- refill.c 8.1 (Berkeley) 6/4/93\r
-*/\r
-#include <LibConfig.h>\r
-#include <sys/EfiCdefs.h>\r
-\r
-#include <assert.h>\r
-#include <errno.h>\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include "reentrant.h"\r
-#include "local.h"\r
-\r
-#ifdef _REENTRANT\r
-extern rwlock_t __sfp_lock;\r
-#endif\r
-\r
-static int lflush(FILE *);\r
-\r
-static int\r
-lflush(FILE *fp)\r
-{\r
-\r
- _DIAGASSERT(fp != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- if ((fp->_flags & (__SLBF|__SWR)) == (__SLBF|__SWR))\r
- return (__sflush(fp));\r
- return (0);\r
-}\r
-\r
-/*\r
- * Refill a stdio buffer.\r
- * Return EOF on eof or error, 0 otherwise.\r
- */\r
-int\r
-__srefill(FILE *fp)\r
-{\r
-\r
- _DIAGASSERT(fp != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- /* make sure stdio is set up */\r
- if (!__sdidinit)\r
- __sinit();\r
-\r
- fp->_r = 0; /* largely a convenience for callers */\r
-\r
- /* SysV does not make this test; take it out for compatibility */\r
- if (fp->_flags & __SEOF) {\r
- return (EOF);\r
- }\r
-\r
- /* if not already reading, have to be reading and writing */\r
- if ((fp->_flags & __SRD) == 0) {\r
- if ((fp->_flags & __SRW) == 0) {\r
- errno = EBADF;\r
- fp->_flags |= __SERR; //<dvm> Allows differentiation between errors and EOF\r
- return (EOF);\r
- }\r
- /* switch to reading */\r
- if (fp->_flags & __SWR) {\r
- if (__sflush(fp)) {\r
- return (EOF);\r
- }\r
- fp->_flags &= ~__SWR;\r
- fp->_w = 0;\r
- fp->_lbfsize = 0;\r
- }\r
- fp->_flags |= __SRD;\r
- } else {\r
- /*\r
- * We were reading. If there is an ungetc buffer,\r
- * we must have been reading from that. Drop it,\r
- * restoring the previous buffer (if any). If there\r
- * is anything in that buffer, return.\r
- */\r
- if (HASUB(fp)) {\r
- FREEUB(fp);\r
- if ((fp->_r = fp->_ur) != 0) {\r
- fp->_p = fp->_up;\r
- return (0);\r
- }\r
- }\r
- }\r
-\r
- if (fp->_bf._base == NULL)\r
- __smakebuf(fp);\r
-\r
- /*\r
- * Before reading from a line buffered or unbuffered file,\r
- * flush all line buffered output files, per the ANSI C\r
- * standard.\r
- */\r
- if (fp->_flags & (__SLBF|__SNBF)) {\r
- rwlock_rdlock(&__sfp_lock);\r
- (void) _fwalk(lflush);\r
- rwlock_unlock(&__sfp_lock);\r
- }\r
- fp->_p = fp->_bf._base;\r
- fp->_r = (*fp->_read)(fp->_cookie, (char *)fp->_p, fp->_bf._size);\r
- fp->_flags &= ~__SMOD; /* buffer contents are again pristine */\r
- if (fp->_r <= 0) {\r
- if (fp->_r == 0)\r
- fp->_flags |= __SEOF;\r
- else {\r
- fp->_r = 0;\r
- fp->_flags |= __SERR;\r
- }\r
- return (EOF);\r
- }\r
- return (0);\r
-}\r
projects / mirror_edk2.git / blobdiff