120 lines
3.8 KiB
C++
120 lines
3.8 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Defines base::PathProviderPosix, default path provider on POSIX OSes that
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// don't have their own base_paths_OS.cc implementation (i.e. all but Mac and
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// Android).
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#include "base/base_paths.h"
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#include <limits.h>
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#include <stddef.h>
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#include <memory>
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#include <ostream>
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#include <string>
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#include "base/environment.h"
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#include "base/files/file_path.h"
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#include "base/files/file_util.h"
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#include "base/logging.h"
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#include "base/nix/xdg_util.h"
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#include "base/path_service.h"
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#include "base/process/process_metrics.h"
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#include "build/build_config.h"
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#if defined(OS_FREEBSD)
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#elif defined(OS_SOLARIS) || defined(OS_AIX)
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#include <stdlib.h>
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#endif
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namespace base {
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bool PathProviderPosix(int key, FilePath* result) {
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switch (key) {
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case FILE_EXE:
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case FILE_MODULE: { // TODO(evanm): is this correct?
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#if defined(OS_LINUX)
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FilePath bin_dir;
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if (!ReadSymbolicLink(FilePath(kProcSelfExe), &bin_dir)) {
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NOTREACHED() << "Unable to resolve " << kProcSelfExe << ".";
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return false;
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}
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*result = bin_dir;
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return true;
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#elif defined(OS_FREEBSD)
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int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
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char bin_dir[PATH_MAX + 1];
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size_t length = sizeof(bin_dir);
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// Upon return, |length| is the number of bytes written to |bin_dir|
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// including the string terminator.
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int error = sysctl(name, 4, bin_dir, &length, NULL, 0);
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if (error < 0 || length <= 1) {
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NOTREACHED() << "Unable to resolve path.";
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return false;
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}
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*result = FilePath(FilePath::StringType(bin_dir, length - 1));
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return true;
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#elif defined(OS_SOLARIS)
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char bin_dir[PATH_MAX + 1];
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if (realpath(getexecname(), bin_dir) == NULL) {
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NOTREACHED() << "Unable to resolve " << getexecname() << ".";
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return false;
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}
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*result = FilePath(bin_dir);
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return true;
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#elif defined(OS_OPENBSD) || defined(OS_AIX)
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// There is currently no way to get the executable path on OpenBSD
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char* cpath;
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if ((cpath = getenv("CHROME_EXE_PATH")) != NULL)
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*result = FilePath(cpath);
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else
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*result = FilePath("/usr/local/chrome/chrome");
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return true;
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#endif
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}
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case DIR_SOURCE_ROOT: {
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// Allow passing this in the environment, for more flexibility in build
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// tree configurations (sub-project builds, gyp --output_dir, etc.)
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std::unique_ptr<Environment> env(Environment::Create());
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std::string cr_source_root;
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FilePath path;
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if (env->GetVar("CR_SOURCE_ROOT", &cr_source_root)) {
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path = FilePath(cr_source_root);
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if (PathExists(path)) {
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*result = path;
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return true;
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}
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DLOG(WARNING) << "CR_SOURCE_ROOT is set, but it appears to not "
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<< "point to a directory.";
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}
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// On POSIX, unit tests execute two levels deep from the source root.
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// For example: out/{Debug|Release}/net_unittest
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if (PathService::Get(DIR_EXE, &path)) {
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*result = path.DirName().DirName();
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return true;
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}
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DLOG(ERROR) << "Couldn't find your source root. "
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<< "Try running from your chromium/src directory.";
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return false;
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}
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case DIR_USER_DESKTOP:
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*result = nix::GetXDGUserDirectory("DESKTOP", "Desktop");
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return true;
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case DIR_CACHE: {
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std::unique_ptr<Environment> env(Environment::Create());
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FilePath cache_dir(
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nix::GetXDGDirectory(env.get(), "XDG_CACHE_HOME", ".cache"));
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*result = cache_dir;
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return true;
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}
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}
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return false;
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}
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} // namespace base
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