+++ /dev/null
-/** @file\r
- Small standard I/O/seek/close functions.\r
- These maintain the `known seek offset' for seek optimisation.\r
-\r
- Copyright (c) 2010 - 2011, 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
- - Redistributions of source code must retain the above copyright\r
- notice, this list of conditions and the following disclaimer.\r
- - 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
- - 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r
- AND 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 COPYRIGHT HOLDERS OR CONTRIBUTORS BE\r
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
- POSSIBILITY OF SUCH DAMAGE.\r
-\r
- NetBSD: stdio.c,v 1.13 2003/08/07 16:43:33 agc Exp\r
- stdio.c 8.1 (Berkeley) 6/4/93\r
-**/\r
-#include <LibConfig.h>\r
-\r
-#include "namespace.h"\r
-\r
-#include <assert.h>\r
-#include <errno.h>\r
-#include <fcntl.h>\r
-#include <stdio.h>\r
-#include <unistd.h>\r
-\r
-#include "reentrant.h"\r
-#include "local.h"\r
-\r
-int\r
-__sread(void *cookie, char *buf, int n)\r
-{\r
- FILE *fp = cookie;\r
- int ret;\r
-\r
- _DIAGASSERT(fp != NULL);\r
- _DIAGASSERT(buf != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- ret = (int)read(fp->_file, buf, (size_t)n);\r
- /* if the read succeeded, update the current offset */\r
- if (ret >= 0)\r
- fp->_offset += ret;\r
- else\r
- fp->_flags &= ~__SOFF; /* paranoia */\r
- return (ret);\r
-}\r
-\r
-int\r
-__swrite(void *cookie, char const *buf, int n)\r
-{\r
- FILE *fp = cookie;\r
-\r
- _DIAGASSERT(cookie != NULL);\r
- _DIAGASSERT(buf != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- if (fp->_flags & __SAPP)\r
- (void) lseek(fp->_file, (off_t)0, SEEK_END);\r
- fp->_flags &= ~__SOFF; /* in case FAPPEND mode is set */\r
- return (int)(write(fp->_file, (char *)buf, (size_t)n));\r
-}\r
-\r
-fpos_t\r
-__sseek(void *cookie, fpos_t offset, int whence)\r
-{\r
- FILE *fp = cookie;\r
- off_t ret;\r
-\r
- _DIAGASSERT(fp != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- ret = lseek(fp->_file, (off_t)offset, whence);\r
- if (ret == -1L)\r
- fp->_flags &= ~__SOFF;\r
- else {\r
- fp->_flags |= __SOFF;\r
- fp->_offset = ret;\r
- }\r
- return (ret);\r
-}\r
-\r
-int\r
-__sclose(void *cookie)\r
-{\r
-\r
- _DIAGASSERT(cookie != NULL);\r
- if(cookie == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- return (close(((FILE *)cookie)->_file));\r
-}\r