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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 #ifndef BASE_LINUX_UTIL_H_
      6 #define BASE_LINUX_UTIL_H_
      7 
      8 #include <stdint.h>
      9 #include <sys/types.h>
     10 
     11 #include <string>
     12 
     13 #include "base/base_export.h"
     14 
     15 namespace base {
     16 
     17 BASE_EXPORT extern const char kFindInodeSwitch[];
     18 
     19 // This is declared here so the crash reporter can access the memory directly
     20 // in compromised context without going through the standard library.
     21 BASE_EXPORT extern char g_linux_distro[];
     22 
     23 // Get the Linux Distro if we can, or return "Unknown".
     24 BASE_EXPORT std::string GetLinuxDistro();
     25 
     26 // Set the Linux Distro string.
     27 BASE_EXPORT void SetLinuxDistro(const std::string& distro);
     28 
     29 // Return the inode number for the UNIX domain socket |fd|.
     30 BASE_EXPORT bool FileDescriptorGetInode(ino_t* inode_out, int fd);
     31 
     32 // Find the process which holds the given socket, named by inode number. If
     33 // multiple processes hold the socket, this function returns false.
     34 BASE_EXPORT bool FindProcessHoldingSocket(pid_t* pid_out, ino_t socket_inode);
     35 
     36 // For a given process |pid|, look through all its threads and find the first
     37 // thread with /proc/[pid]/task/[thread_id]/syscall whose first N bytes matches
     38 // |expected_data|, where N is the length of |expected_data|.
     39 // Returns the thread id or -1 on error.  If |syscall_supported| is
     40 // set to false the kernel does not support syscall in procfs.
     41 BASE_EXPORT pid_t FindThreadIDWithSyscall(pid_t pid,
     42                                           const std::string& expected_data,
     43                                           bool* syscall_supported);
     44 
     45 }  // namespace base
     46 
     47 #endif  // BASE_LINUX_UTIL_H_
     48