#pragma once /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <dirent.h> #include <stdbool.h> #include <stdio.h> #include <sys/socket.h> #include "macro.h" /* Make sure we can distinguish fd 0 and NULL */ #define FD_TO_PTR(fd) INT_TO_PTR((fd)+1) #define PTR_TO_FD(p) (PTR_TO_INT(p)-1) int close_nointr(int fd); int safe_close(int fd); void safe_close_pair(int p[]); void close_many(const int fds[], unsigned n_fd); int fclose_nointr(FILE *f); FILE* safe_fclose(FILE *f); DIR* safe_closedir(DIR *f); static inline void closep(int *fd) { safe_close(*fd); } static inline void close_pairp(int (*p)[2]) { safe_close_pair(*p); } static inline void fclosep(FILE **f) { safe_fclose(*f); } DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose); DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir); #define _cleanup_close_ _cleanup_(closep) #define _cleanup_fclose_ _cleanup_(fclosep) #define _cleanup_pclose_ _cleanup_(pclosep) #define _cleanup_closedir_ _cleanup_(closedirp) #define _cleanup_close_pair_ _cleanup_(close_pairp) int fd_nonblock(int fd, bool nonblock); int fd_cloexec(int fd, bool cloexec); int close_all_fds(const int except[], unsigned n_except); int same_fd(int a, int b); void cmsg_close_all(struct msghdr *mh); bool fdname_is_valid(const char *s); int fd_get_path(int fd, char **ret); /* Hint: ENETUNREACH happens if we try to connect to "non-existing" special IP addresses, such as ::5 */ #define ERRNO_IS_DISCONNECT(r) \ IN_SET(r, ENOTCONN, ECONNRESET, ECONNREFUSED, ECONNABORTED, EPIPE, ENETUNREACH)