proc_maps_linux.h - mozsearch

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// Copyright (c) 2013 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

#ifndef BASE_DEBUG_PROC_MAPS_LINUX_H_

#define BASE_DEBUG_PROC_MAPS_LINUX_H_

#include <string>

#include <vector>

#include "common/using_std_string.h"

#include "google_breakpad/common/breakpad_types.h"

namespace google_breakpad {

// Describes a region of mapped memory and the path of the file mapped.

struct MappedMemoryRegion {

  enum Permission {

    READ = 1 << 0,

    WRITE = 1 << 1,

    EXECUTE = 1 << 2,

    PRIVATE = 1 << 3,  // If set, region is private, otherwise it is shared.

};

  // The address range [start,end) of mapped memory.

  uint64_t start;

  uint64_t end;

  // Byte offset into |path| of the range mapped into memory.

  uint64_t offset;

  // Bitmask of read/write/execute/private/shared permissions.

  uint8_t permissions;

  // Major and minor devices.

  uint8_t major_device;

  uint8_t minor_device;

  // Value of the inode.

  uint64_t inode;

  // Name of the file mapped into memory.

//

  // NOTE: path names aren't guaranteed to point at valid files. For example,

  // "[heap]" and "[stack]" are used to represent the location of the process'

  // heap and stack, respectively.

  string path;

  // The line from /proc/<pid>/maps that this struct represents.

  string line;

};

// Parses /proc/<pid>/maps input data and stores in |regions|. Returns true

// and updates |regions| if and only if all of |input| was successfully parsed.

bool ParseProcMaps(const string& input,

                   std::vector<MappedMemoryRegion>* regions);

}  // namespace google_breakpad

#endif  // BASE_DEBUG_PROC_MAPS_LINUX_H_