a1feb117e4
This patch also fixes realpath for libraries opened directly from apks. Bug: http://b/21960914 Bug: http://b/21961857 Change-Id: I35ade661c87f1d448191f385811f6e9fd3cacf11
64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
/*
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* Copyright (C) 2015 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 "linker_utils.h"
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#include "linker_debug.h"
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bool normalize_path(const char* path, std::string* normalized_path) {
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// Input should be an absolute path
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if (path[0] != '/') {
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PRINT("canonize_path - invalid input: '%s', the input path should be absolute", path);
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return false;
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}
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const size_t len = strlen(path) + 1;
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char buf[len];
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const char* in_ptr = path;
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char* out_ptr = buf;
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while (*in_ptr != 0) {
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if (*in_ptr == '/') {
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char c1 = in_ptr[1];
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if (c1 == '.') {
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char c2 = in_ptr[2];
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if (c2 == '/') {
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in_ptr += 2;
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continue;
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} else if (c2 == '.' && (in_ptr[3] == '/' || in_ptr[3] == 0)) {
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in_ptr += 3;
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while (out_ptr > buf && *--out_ptr != '/') {
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}
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if (in_ptr[0] == 0) {
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// retain '/'
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out_ptr++;
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}
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continue;
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}
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} else if (c1 == '/') {
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++in_ptr;
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continue;
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}
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}
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*out_ptr++ = *in_ptr++;
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}
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*out_ptr = 0;
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*normalized_path = buf;
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return true;
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}
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