-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
#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 <stdio.h>
#include <dirent.h>
#include <stdbool.h>
+#include <stdio.h>
#include <sys/socket.h>
#include "macro.h"
int safe_close(int fd);
void safe_close_pair(int p[]);
-void close_many(const int fds[], unsigned n_fd);
+static inline int safe_close_above_stdio(int fd) {
+ if (fd < 3) /* Don't close stdin/stdout/stderr, but still invalidate the fd by returning -1 */
+ return -1;
+
+ return safe_close(fd);
+}
+
+void close_many(const int fds[], size_t n_fd);
int fclose_nointr(FILE *f);
FILE* safe_fclose(FILE *f);
-// UNNEEDED DIR* safe_closedir(DIR *f);
+#if 0 /// UNNEEDED by elogind
+DIR* safe_closedir(DIR *f);
+#endif // 0
static inline void closep(int *fd) {
safe_close(*fd);
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 close_all_fds(const int except[], size_t n_except);
+
+#if 0 /// UNNEEDED by elogind
+int same_fd(int a, int b);
+
+void cmsg_close_all(struct msghdr *mh);
+
+bool fdname_is_valid(const char *s);
+#endif // 0
+
+int fd_get_path(int fd, char **ret);
+
+int move_fd(int from, int to, int cloexec);
+
+enum {
+ ACQUIRE_NO_DEV_NULL = 1 << 0,
+ ACQUIRE_NO_MEMFD = 1 << 1,
+ ACQUIRE_NO_PIPE = 1 << 2,
+ ACQUIRE_NO_TMPFILE = 1 << 3,
+ ACQUIRE_NO_REGULAR = 1 << 4,
+};
+
+int acquire_data_fd(const void *data, size_t size, unsigned flags);
+
+#if 0 /// UNNEEDED by elogind
+int fd_duplicate_data_fd(int fd);
+#endif // 0
+
+/* 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)
+
+/* Resource exhaustion, could be our fault or general system trouble */
+#define ERRNO_IS_RESOURCE(r) \
+ IN_SET(r, ENOMEM, EMFILE, ENFILE)
+
+int fd_move_above_stdio(int fd);
+
+int rearrange_stdio(int original_input_fd, int original_output_fd, int original_error_fd);
+
+static inline int make_null_stdio(void) {
+ return rearrange_stdio(-1, -1, -1);
+}
-// UNNEEDED int same_fd(int a, int b);
+/* Like TAKE_PTR() but for file descriptors, resetting them to -1 */
+#define TAKE_FD(fd) \
+ ({ \
+ int _fd_ = (fd); \
+ (fd) = -1; \
+ _fd_; \
+ })
-// UNNEEDED void cmsg_close_all(struct msghdr *mh);
+int fd_reopen(int fd, int flags);
-// UNNEEDED bool fdname_is_valid(const char *s);
+int read_nr_open(void);