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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/metrics/drive_metrics_provider.h" | |
| 6 | |
| 7 #include <CoreFoundation/CoreFoundation.h> | |
| 8 #include <DiskArbitration/DiskArbitration.h> | |
| 9 #include <Foundation/Foundation.h> | |
| 10 #include <IOKit/IOKitLib.h> | |
| 11 #include <IOKit/storage/IOStorageDeviceCharacteristics.h> | |
| 12 #include <stdlib.h> | |
| 13 #include <sys/stat.h> | |
| 14 | |
| 15 #include "base/files/file_path.h" | |
| 16 #include "base/mac/foundation_util.h" | |
| 17 #include "base/mac/mac_util.h" | |
| 18 #include "base/mac/scoped_cftyperef.h" | |
| 19 #include "base/mac/scoped_ioobject.h" | |
| 20 | |
| 21 // static | |
| 22 bool DriveMetricsProvider::HasSeekPenalty(const base::FilePath& path, | |
| 23 bool* has_seek_penalty) { | |
| 24 struct stat path_stat; | |
| 25 if (stat(path.value().c_str(), &path_stat) < 0) | |
| 26 return false; | |
| 27 | |
| 28 const char* dev_name = devname(path_stat.st_dev, S_IFBLK); | |
| 29 if (!dev_name) | |
| 30 return false; | |
| 31 | |
| 32 std::string bsd_name("/dev/"); | |
| 33 bsd_name.append(dev_name); | |
| 34 | |
| 35 base::ScopedCFTypeRef<DASessionRef> session( | |
| 36 DASessionCreate(kCFAllocatorDefault)); | |
| 37 if (!session) | |
| 38 return false; | |
| 39 | |
| 40 base::ScopedCFTypeRef<DADiskRef> disk(DADiskCreateFromBSDName( | |
| 41 kCFAllocatorDefault, session, bsd_name.c_str())); | |
| 42 if (!disk) | |
| 43 return false; | |
| 44 | |
| 45 base::mac::ScopedIOObject<io_object_t> io_media(DADiskCopyIOMedia(disk)); | |
| 46 base::ScopedCFTypeRef<CFDictionaryRef> characteristics( | |
| 47 static_cast<CFDictionaryRef>(IORegistryEntrySearchCFProperty( | |
| 48 io_media, | |
| 49 kIOServicePlane, | |
| 50 CFSTR(kIOPropertyDeviceCharacteristicsKey), | |
| 51 kCFAllocatorDefault, | |
| 52 kIORegistryIterateRecursively | kIORegistryIterateParents))); | |
| 53 if (!characteristics) | |
| 54 return false; | |
| 55 | |
| 56 CFStringRef type_ref = base::mac::GetValueFromDictionary<CFStringRef>( | |
| 57 characteristics, CFSTR(kIOPropertyMediumTypeKey)); | |
| 58 if (!type_ref) | |
| 59 return false; | |
| 60 | |
| 61 NSString* type = base::mac::CFToNSCast(type_ref); | |
| 62 if ([type isEqualToString:@kIOPropertyMediumTypeRotationalKey]) { | |
| 63 *has_seek_penalty = true; | |
| 64 return true; | |
| 65 } else if ([type isEqualToString:@kIOPropertyMediumTypeSolidStateKey]) { | |
| 66 *has_seek_penalty = false; | |
| 67 return true; | |
| 68 } | |
| 69 | |
| 70 // TODO(dbeam): should I look for these Rotational/Solid State keys in | |
| 71 // |characteristics|? What if I find device characteristic but there's no | |
| 72 // type? Assume rotational? | |
| 73 return false; | |
| 74 } | |
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Chromium Code Reviews
Issue 1254983003:
Componentize DriveMetricsProvider* (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master