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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_system_openfilefinder_h__
#define mozilla_system_openfilefinder_h__
#include "nsString.h"
#include <dirent.h>
namespace mozilla {
namespace system {
class OpenFileFinder
{
public:
enum State
{
NEXT_PID,
CHECK_FDS,
DONE
};
class Info
{
public:
nsCString mFileName; // name of the the open file
nsCString mAppName; // App which has the file open (if it's a b2g app)
pid_t mPid; // pid of the process which has the file open
nsCString mComm; // comm associated with pid
nsCString mExe; // executable name associated with pid
bool mIsB2gOrDescendant; // this is b2g/its descendant or not
};
OpenFileFinder(const nsACString& aPath, bool aCheckIsB2gOrDescendant = true);
~OpenFileFinder();
bool First(Info* aInfo); // Return the first open file
bool Next(Info* aInfo); // Return the next open file
void Close();
private:
void FillInfo(Info *aInfo, const nsACString& aPath);
bool ReadSymLink(const nsACString& aSymLink, nsACString& aOutPath);
bool PathMatches(const nsACString& aPath)
{
return Substring(aPath, 0, mPath.Length()).Equals(mPath);
}
State mState; // Keeps track of what we're doing.
nsCString mPath; // Only report files contained within this directory tree
DIR* mProcDir; // Used for scanning /proc
DIR* mFdDir; // Used for scanning /proc/PID/fd
int mPid; // PID currently being processed
pid_t mMyPid; // PID of parent process, we assume we're running on it.
bool mCheckIsB2gOrDescendant; // Do we care about non-b2g process?
};
} // system
} // mozilla
#endif // mozilla_system_nsvolume_h__
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