1 /* Determine the parent process of a given process. 2 Copyright (C) 2019-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2019. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 3 of the 8 License, or (at your option) any later version. 9 10 This file is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #ifndef _GET_PPID_OF_H 19 #define _GET_PPID_OF_H 20 21 #include <sys/types.h> 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 /* Returns the process id of the parent process of the given process, 28 or 0 if it cannot be determined. */ 29 extern pid_t get_ppid_of (pid_t pid); 30 31 #ifdef __cplusplus 32 } 33 #endif 34 35 #endif /* _GET_PPID_OF_H */