1 #pragma once 2 3 /*** 4 This file is part of systemd. 5 6 Copyright 2010 Lennart Poettering 7 8 systemd is free software; you can redistribute it and/or modify it 9 under the terms of the GNU Lesser General Public License as published by 10 the Free Software Foundation; either version 2.1 of the License, or 11 (at your option) any later version. 12 13 systemd is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 Lesser General Public License for more details. 17 18 You should have received a copy of the GNU Lesser General Public License 19 along with systemd; If not, see <http://www.gnu.org/licenses/>. 20 ***/ 21 22 #include <stdbool.h> 23 #include <sys/types.h> 24 #include <alloca.h> 25 #include <stdio.h> 26 #include <string.h> 27 #include <signal.h> 28 29 #include "formats-util.h" 30 31 #define procfs_file_alloca(pid, field) \ 32 ({ \ 33 pid_t _pid_ = (pid); \ 34 const char *_r_; \ 35 if (_pid_ == 0) { \ 36 _r_ = ("/proc/self/" field); \ 37 } else { \ 38 _r_ = alloca(strlen("/proc/") + DECIMAL_STR_MAX(pid_t) + 1 + sizeof(field)); \ 39 sprintf((char*) _r_, "/proc/"PID_FMT"/" field, _pid_); \ 40 } \ 41 _r_; \ 42 }) 43 44 int get_process_comm(pid_t pid, char **name); 45 int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line); 46 int get_process_environ(pid_t pid, char **environ); 47