Merge pull request #11827 from keszybz/pkgconfig-variables

[thirdparty/systemd.git] / src / basic / fs-util.h

diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h
index 4dba1ea56adb511731a7d603a6339cfceeb86cca..7ad030be5d0e4a7c71a136e371f953892b4b81dd 100644 (file)
--- a/src/basic/fs-util.h
+++ b/src/basic/fs-util.h
@@ -1,25 +1,7 @@
 /* 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 <dirent.h>
 #include <fcntl.h>
 #include <limits.h>
 #include <stdbool.h>
@@ -41,12 +23,12 @@ int readlinkat_malloc(int fd, const char *p, char **ret);
 int readlink_malloc(const char *p, char **r);
 int readlink_value(const char *p, char **ret);
 int readlink_and_make_absolute(const char *p, char **r);
-int readlink_and_canonicalize(const char *p, const char *root, char **r);
-int readlink_and_make_absolute_root(const char *root, const char *path, char **ret);
 
 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
+int fchmod_and_chown(int fd, mode_t mode, uid_t uid, gid_t gid);
 
 int fchmod_umask(int fd, mode_t mode);
+int fchmod_opath(int fd, mode_t m);
 
 int fd_warn_permissions(const char *path, int fd);
 
@@ -55,17 +37,20 @@ int fd_warn_permissions(const char *path, int fd);
 int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode);
 int touch(const char *path);
 
-int symlink_idempotent(const char *from, const char *to);
+int symlink_idempotent(const char *from, const char *to, bool make_relative);
 
 int symlink_atomic(const char *from, const char *to);
 int mknod_atomic(const char *path, mode_t mode, dev_t dev);
 int mkfifo_atomic(const char *path, mode_t mode);
+int mkfifoat_atomic(int dir_fd, const char *path, mode_t mode);
 
 int get_files_in_directory(const char *path, char ***list);
 
 int tmp_dir(const char **ret);
 int var_tmp_dir(const char **ret);
 
+int unlink_or_warn(const char *filename);
+
 #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)
 
 #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \
@@ -81,15 +66,26 @@ union inotify_event_buffer {
 int inotify_add_watch_fd(int fd, int what, uint32_t mask);
 
 enum {
-        CHASE_PREFIX_ROOT = 1U << 0,   /* If set, the specified path will be prefixed by the specified root before beginning the iteration */
-        CHASE_NONEXISTENT = 1U << 1,   /* If set, it's OK if the path doesn't actually exist. */
-        CHASE_NO_AUTOFS   = 1U << 2,   /* If set, return -EREMOTE if autofs mount point found */
-        CHASE_SAFE        = 1U << 3,   /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */
-        CHASE_OPEN        = 1U << 4,   /* If set, return an O_PATH object to the final component */
+        CHASE_PREFIX_ROOT = 1 << 0, /* If set, the specified path will be prefixed by the specified root before beginning the iteration */
+        CHASE_NONEXISTENT = 1 << 1, /* If set, it's OK if the path doesn't actually exist. */
+        CHASE_NO_AUTOFS   = 1 << 2, /* If set, return -EREMOTE if autofs mount point found */
+        CHASE_SAFE        = 1 << 3, /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */
+        CHASE_OPEN        = 1 << 4, /* If set, return an O_PATH object to the final component */
+        CHASE_TRAIL_SLASH = 1 << 5, /* If set, any trailing slash will be preserved */
+        CHASE_STEP        = 1 << 6, /* If set, just execute a single step of the normalization */
+        CHASE_NOFOLLOW    = 1 << 7, /* Only valid with CHASE_OPEN: when the path's right-most component refers to symlink return O_PATH fd of the symlink, rather than following it. */
+        CHASE_WARN        = 1 << 8, /* Emit an appropriate warning when an error is encountered */
 };
 
+/* How many iterations to execute before returning -ELOOP */
+#define CHASE_SYMLINKS_MAX 32
+
 int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret);
 
+int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path);
+int chase_symlinks_and_opendir(const char *path, const char *root, unsigned chase_flags, char **ret_path, DIR **ret_dir);
+int chase_symlinks_and_stat(const char *path, const char *root, unsigned chase_flags, char **ret_path, struct stat *ret_stat);
+
 /* Useful for usage with _cleanup_(), removes a directory and frees the pointer */
 static inline void rmdir_and_free(char *p) {
         PROTECT_ERRNO;
@@ -105,3 +101,11 @@ static inline void unlink_and_free(char *p) {
 DEFINE_TRIVIAL_CLEANUP_FUNC(char*, unlink_and_free);
 
 int access_fd(int fd, int mode);
+
+void unlink_tempfilep(char (*p)[]);
+int unlinkat_deallocate(int fd, const char *name, int flags);
+
+int fsync_directory_of_file(int fd);
+int fsync_path_at(int at_fd, const char *path);
+
+int open_parent(const char *path, int flags, mode_t mode);