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      1 // Copyright (c) 2012 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 "content/browser/download/file_metadata_linux.h"
      6 
      7 #include <sys/types.h>
      8 #include <sys/xattr.h>
      9 
     10 #include "base/files/file_path.h"
     11 #include "base/files/file_util.h"
     12 #include "base/logging.h"
     13 #include "url/gurl.h"
     14 
     15 namespace content {
     16 
     17 const char kSourceURLAttrName[] = "user.xdg.origin.url";
     18 const char kReferrerURLAttrName[] = "user.xdg.referrer.url";
     19 
     20 static void SetExtendedFileAttribute(const char* path, const char* name,
     21                                      const char* value, size_t value_size,
     22                                      int flags) {
     23   int result = setxattr(path, name, value, value_size, flags);
     24   if (result) {
     25     DPLOG(ERROR)
     26         << "Could not set extended attribute " << name << " on file " << path;
     27   }
     28 }
     29 
     30 void AddOriginMetadataToFile(const base::FilePath& file, const GURL& source,
     31                              const GURL& referrer) {
     32   DCHECK(base::PathIsWritable(file));
     33   if (source.is_valid()) {
     34     SetExtendedFileAttribute(file.value().c_str(), kSourceURLAttrName,
     35         source.spec().c_str(), source.spec().length(), 0);
     36   }
     37   if (referrer.is_valid()) {
     38     SetExtendedFileAttribute(file.value().c_str(), kReferrerURLAttrName,
     39         referrer.spec().c_str(), referrer.spec().length(), 0);
     40   }
     41 }
     42 
     43 }  // namespace content
     44