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| author | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-04-27 21:42:16 +0000 |
|---|---|---|
| committer | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-04-27 21:42:16 +0000 |
| commit | 2aa62f2bc9a9654687b377d9ca8a8c2c860a3852 (patch) | |
| tree | 62a0991a44327154fb88bf95bd6f7522053db7bb /StdLib/LibC/Stdio/stdio.c | |
| parent | 98790d814871cc30bbd536673d3a0948047cd2f0 (diff) | |
| download | edk2-platforms-2aa62f2bc9a9654687b377d9ca8a8c2c860a3852.tar.xz | |
Standard Libraries for EDK II.
This set of three packages: AppPkg, StdLib, StdLibPrivateInternalFiles; contains the implementation of libraries based upon non-UEFI standards such as ISO/IEC-9899, the library portion of the C Language Standard, POSIX, etc.
AppPkg contains applications that make use of the standard libraries defined in the StdLib Package.
StdLib contains header (include) files and the implementations of the standard libraries.
StdLibPrivateInternalFiles contains files for the exclusive use of the library implementations in StdLib. These files should never be directly referenced from applications or other code.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11600 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'StdLib/LibC/Stdio/stdio.c')
| -rw-r--r-- | StdLib/LibC/Stdio/stdio.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/StdLib/LibC/Stdio/stdio.c b/StdLib/LibC/Stdio/stdio.c new file mode 100644 index 0000000000..005a4388df --- /dev/null +++ b/StdLib/LibC/Stdio/stdio.c @@ -0,0 +1,117 @@ +/** @file
+ Small standard I/O/seek/close functions.
+ These maintain the `known seek offset' for seek optimisation.
+
+ Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License that accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ Copyright (c) 1990, 1993
+ The Regents of the University of California. All rights reserved.
+
+ This code is derived from software contributed to Berkeley by
+ Chris Torek.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ - Neither the name of the University nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+ NetBSD: stdio.c,v 1.13 2003/08/07 16:43:33 agc Exp
+ stdio.c 8.1 (Berkeley) 6/4/93
+**/
+#include <LibConfig.h>
+
+#include "namespace.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/EfiSysCall.h>
+
+#include "reentrant.h"
+#include "local.h"
+
+int
+__sread(void *cookie, char *buf, int n)
+{
+ FILE *fp = cookie;
+ int ret;
+
+ _DIAGASSERT(fp != NULL);
+ _DIAGASSERT(buf != NULL);
+
+ ret = (int)read(fp->_file, buf, (size_t)n);
+ /* if the read succeeded, update the current offset */
+ if (ret >= 0)
+ fp->_offset += ret;
+ else
+ fp->_flags &= ~__SOFF; /* paranoia */
+ return (ret);
+}
+
+int
+__swrite(void *cookie, char const *buf, int n)
+{
+ FILE *fp = cookie;
+
+ _DIAGASSERT(cookie != NULL);
+ _DIAGASSERT(buf != NULL);
+
+ if (fp->_flags & __SAPP)
+ (void) lseek(fp->_file, (off_t)0, SEEK_END);
+ fp->_flags &= ~__SOFF; /* in case FAPPEND mode is set */
+ return (int)(write(fp->_file, (char *)buf, (size_t)n));
+}
+
+fpos_t
+__sseek(void *cookie, fpos_t offset, int whence)
+{
+ FILE *fp = cookie;
+ off_t ret;
+
+ _DIAGASSERT(fp != NULL);
+
+ ret = lseek(fp->_file, (off_t)offset, whence);
+ if (ret == -1L)
+ fp->_flags &= ~__SOFF;
+ else {
+ fp->_flags |= __SOFF;
+ fp->_offset = ret;
+ }
+ return (ret);
+}
+
+int
+__sclose(void *cookie)
+{
+
+ _DIAGASSERT(cookie != NULL);
+
+ return (close(((FILE *)cookie)->_file));
+}
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