6433ec22b1
Linker --wrap option resolves to __wrap_symbol for undefined symbol. During the compilation of host libportable.a, __HOST__ is defined to rename all portable functions to __wrap_symbol, and the real function to __real_symbol. This way libportable.a can be validated at host w/o changes of user's source code. See http://sourceware.org/binutils/docs/ld/Options.html Change-Id: Idcbe53dd642536f3dc2be85a875f95535b9dc0b1
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
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* Copyright 2012, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <portability.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <fcntl_portable.h>
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#define PORTABLE_TAG "flags_portable"
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#include <log_portable.h>
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/* __sflags is an internal bionic routine but the symbol is exported and there are callers... */
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extern int __sflags(const char *, int *);
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int
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WRAP(__sflags)(const char *mode, int *optr)
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{
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int rv;
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int nflags, pflags;
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ALOGV(" ");
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ALOGV("%s(mode:%p, optr:%p) {", __func__, mode, optr);
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rv = __sflags(mode, &nflags);
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/* error - no change to *optr */
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if (rv == 0)
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goto done;
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pflags = nflags & O_ACCMODE;
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if (nflags & O_CREAT)
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pflags |= O_CREAT_PORTABLE;
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if (nflags & O_TRUNC)
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pflags |= O_TRUNC_PORTABLE;
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if (nflags & O_APPEND)
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pflags |= O_APPEND_PORTABLE;
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/* Set *optr to portable flags */
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*optr = pflags;
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done:
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ALOGV("%s: return(rv:%d); }", __func__, rv);
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return rv;
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}
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