-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- 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 <string.h>
#include "conf-files.h"
+//#include "def.h"
#include "dirent-util.h"
#include "fd-util.h"
#include "hashmap.h"
#include "macro.h"
#include "missing.h"
#include "path-util.h"
+//#include "set.h"
+#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
+//#include "terminal-util.h"
#include "util.h"
-static int files_add(Hashmap *h, const char *root, const char *path, const char *suffix) {
+static int files_add(
+ Hashmap *h,
+ Set *masked,
+ const char *suffix,
+ const char *root,
+ unsigned flags,
+ const char *path) {
+
_cleanup_closedir_ DIR *dir = NULL;
const char *dirpath;
+ struct dirent *de;
int r;
+ assert(h);
+ assert((flags & CONF_FILES_FILTER_MASKED) == 0 || masked);
assert(path);
- assert(suffix);
dirpath = prefix_roota(root, path);
if (!dir) {
if (errno == ENOENT)
return 0;
- return -errno;
+
+ return log_debug_errno(errno, "Failed to open directory '%s': %m", dirpath);
}
- for (;;) {
- struct dirent *de;
- char *p;
+ FOREACH_DIRENT(de, dir, return -errno) {
+ struct stat st;
+ char *p, *key;
- errno = 0;
- de = readdir(dir);
- if (!de && errno != 0)
- return -errno;
+ /* Does this match the suffix? */
+ if (suffix && !endswith(de->d_name, suffix))
+ continue;
- if (!de)
- break;
+ /* Has this file already been found in an earlier directory? */
+ if (hashmap_contains(h, de->d_name)) {
+ log_debug("Skipping overridden file '%s/%s'.", dirpath, de->d_name);
+ continue;
+ }
- if (!dirent_is_file_with_suffix(de, suffix))
+ /* Has this been masked in an earlier directory? */
+ if ((flags & CONF_FILES_FILTER_MASKED) && set_contains(masked, de->d_name)) {
+ log_debug("File '%s/%s' is masked by previous entry.", dirpath, de->d_name);
continue;
+ }
- p = strjoin(dirpath, "/", de->d_name, NULL);
- if (!p)
- return -ENOMEM;
+ /* Read file metadata if we shall validate the check for file masks, for node types or whether the node is marked executable. */
+ if (flags & (CONF_FILES_FILTER_MASKED|CONF_FILES_REGULAR|CONF_FILES_DIRECTORY|CONF_FILES_EXECUTABLE))
+ if (fstatat(dirfd(dir), de->d_name, &st, 0) < 0) {
+ log_debug_errno(errno, "Failed to stat '%s/%s', ignoring: %m", dirpath, de->d_name);
+ continue;
+ }
+
+ /* Is this a masking entry? */
+ if ((flags & CONF_FILES_FILTER_MASKED))
+ if (null_or_empty(&st)) {
+ /* Mark this one as masked */
+ r = set_put_strdup(masked, de->d_name);
+ if (r < 0)
+ return r;
+
+ log_debug("File '%s/%s' is a mask.", dirpath, de->d_name);
+ continue;
+ }
+
+ /* Does this node have the right type? */
+ if (flags & (CONF_FILES_REGULAR|CONF_FILES_DIRECTORY))
+ if (!((flags & CONF_FILES_DIRECTORY) && S_ISDIR(st.st_mode)) &&
+ !((flags & CONF_FILES_REGULAR) && S_ISREG(st.st_mode))) {
+ log_debug("Ignoring '%s/%s', as it is not a of the right type.", dirpath, de->d_name);
+ continue;
+ }
+
+ /* Does this node have the executable bit set? */
+ if (flags & CONF_FILES_EXECUTABLE)
+ /* As requested: check if the file is marked exectuable. Note that we don't check access(X_OK)
+ * here, as we care about whether the file is marked executable at all, and not whether it is
+ * executable for us, because if so, such errors are stuff we should log about. */
+
+ if ((st.st_mode & 0111) == 0) { /* not executable */
+ log_debug("Ignoring '%s/%s', as it is not marked executable.", dirpath, de->d_name);
+ continue;
+ }
+
+ if (flags & CONF_FILES_BASENAME) {
+ p = strdup(de->d_name);
+ if (!p)
+ return -ENOMEM;
+
+ key = p;
+ } else {
+ p = strjoin(dirpath, "/", de->d_name);
+ if (!p)
+ return -ENOMEM;
+
+ key = basename(p);
+ }
- r = hashmap_put(h, basename(p), p);
- if (r == -EEXIST) {
- log_debug("Skipping overridden file: %s.", p);
- free(p);
- } else if (r < 0) {
- free(p);
- return r;
- } else if (r == 0) {
- log_debug("Duplicate file %s", p);
+ r = hashmap_put(h, key, p);
+ if (r < 0) {
free(p);
+ return log_debug_errno(r, "Failed to add item to hashmap: %m");
}
+
+ assert(r > 0);
}
return 0;
return strcmp(basename(s1), basename(s2));
}
-static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) {
+static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, unsigned flags, char **dirs) {
_cleanup_hashmap_free_ Hashmap *fh = NULL;
+ _cleanup_set_free_free_ Set *masked = NULL;
char **files, **p;
int r;
assert(strv);
- assert(suffix);
/* This alters the dirs string array */
if (!path_strv_resolve_uniq(dirs, root))
return -ENOMEM;
- fh = hashmap_new(&string_hash_ops);
+ fh = hashmap_new(&path_hash_ops);
if (!fh)
return -ENOMEM;
+ if (flags & CONF_FILES_FILTER_MASKED) {
+ masked = set_new(&path_hash_ops);
+ if (!masked)
+ return -ENOMEM;
+ }
+
STRV_FOREACH(p, dirs) {
- r = files_add(fh, root, *p, suffix);
- if (r == -ENOMEM) {
+ r = files_add(fh, masked, suffix, root, flags, *p);
+ if (r == -ENOMEM)
return r;
- } else if (r < 0)
- log_debug_errno(r, "Failed to search for files in %s: %m",
- *p);
+ if (r < 0)
+ log_debug_errno(r, "Failed to search for files in %s, ignoring: %m", *p);
}
files = hashmap_get_strv(fh);
- if (files == NULL) {
+ if (!files)
return -ENOMEM;
- }
qsort_safe(files, hashmap_size(fh), sizeof(char *), base_cmp);
*strv = files;
return 0;
}
-int conf_files_list_strv(char ***strv, const char *suffix, const char *root, const char* const* dirs) {
+int conf_files_insert(char ***strv, const char *root, char **dirs, const char *path) {
+ /* Insert a path into strv, at the place honouring the usual sorting rules:
+ * - we first compare by the basename
+ * - and then we compare by dirname, allowing just one file with the given
+ * basename.
+ * This means that we will
+ * - add a new entry if basename(path) was not on the list,
+ * - do nothing if an entry with higher priority was already present,
+ * - do nothing if our new entry matches the existing entry,
+ * - replace the existing entry if our new entry has higher priority.
+ */
+ size_t i;
+ char *t;
+ int r;
+
+ for (i = 0; i < strv_length(*strv); i++) {
+ int c;
+
+ c = base_cmp(*strv + i, &path);
+ if (c == 0) {
+ char **dir;
+
+ /* Oh, we found our spot and it already contains something. */
+ STRV_FOREACH(dir, dirs) {
+ char *p1, *p2;
+
+ p1 = path_startswith((*strv)[i], root);
+ if (p1)
+ /* Skip "/" in *dir, because p1 is without "/" too */
+ p1 = path_startswith(p1, *dir + 1);
+ if (p1)
+ /* Existing entry with higher priority
+ * or same priority, no need to do anything. */
+ return 0;
+
+ p2 = path_startswith(path, *dir);
+ if (p2) {
+ /* Our new entry has higher priority */
+ t = path_join(root, path, NULL);
+ if (!t)
+ return log_oom();
+
+ return free_and_replace((*strv)[i], t);
+ }
+ }
+
+ } else if (c > 0)
+ /* Following files have lower priority, let's go insert our
+ * new entry. */
+ break;
+
+ /* … we are not there yet, let's continue */
+ }
+
+ t = path_join(root, path, NULL);
+ if (!t)
+ return log_oom();
+
+ r = strv_insert(strv, i, t);
+ if (r < 0)
+ free(t);
+ return r;
+}
+
+int conf_files_insert_nulstr(char ***strv, const char *root, const char *dirs, const char *path) {
+ _cleanup_strv_free_ char **d = NULL;
+
+ assert(strv);
+
+ d = strv_split_nulstr(dirs);
+ if (!d)
+ return -ENOMEM;
+
+ return conf_files_insert(strv, root, d, path);
+}
+
+int conf_files_list_strv(char ***strv, const char *suffix, const char *root, unsigned flags, const char* const* dirs) {
_cleanup_strv_free_ char **copy = NULL;
assert(strv);
- assert(suffix);
copy = strv_copy((char**) dirs);
if (!copy)
return -ENOMEM;
- return conf_files_list_strv_internal(strv, suffix, root, copy);
+ return conf_files_list_strv_internal(strv, suffix, root, flags, copy);
}
-int conf_files_list(char ***strv, const char *suffix, const char *root, const char *dir, ...) {
+int conf_files_list(char ***strv, const char *suffix, const char *root, unsigned flags, const char *dir, ...) {
_cleanup_strv_free_ char **dirs = NULL;
va_list ap;
assert(strv);
- assert(suffix);
va_start(ap, dir);
dirs = strv_new_ap(dir, ap);
if (!dirs)
return -ENOMEM;
- return conf_files_list_strv_internal(strv, suffix, root, dirs);
+ return conf_files_list_strv_internal(strv, suffix, root, flags, dirs);
}
-int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) {
- _cleanup_strv_free_ char **dirs = NULL;
+int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, unsigned flags, const char *dirs) {
+ _cleanup_strv_free_ char **d = NULL;
assert(strv);
- assert(suffix);
- dirs = strv_split_nulstr(d);
- if (!dirs)
+ d = strv_split_nulstr(dirs);
+ if (!d)
return -ENOMEM;
- return conf_files_list_strv_internal(strv, suffix, root, dirs);
+ return conf_files_list_strv_internal(strv, suffix, root, flags, d);
+}
+
+int conf_files_list_with_replacement(
+ const char *root,
+ char **config_dirs,
+ const char *replacement,
+ char ***files,
+ char **replace_file) {
+
+ _cleanup_strv_free_ char **f = NULL;
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ assert(config_dirs);
+ assert(files);
+ assert(replace_file || !replacement);
+
+ r = conf_files_list_strv(&f, ".conf", root, 0, (const char* const*) config_dirs);
+ if (r < 0)
+ return log_error_errno(r, "Failed to enumerate config files: %m");
+
+ if (replacement) {
+ r = conf_files_insert(&f, root, config_dirs, replacement);
+ if (r < 0)
+ return log_error_errno(r, "Failed to extend config file list: %m");
+
+ p = path_join(root, replacement, NULL);
+ if (!p)
+ return log_oom();
+ }
+
+ *files = TAKE_PTR(f);
+ if (replace_file)
+ *replace_file = TAKE_PTR(p);
+ return 0;
+}
+
+int conf_files_cat(const char *root, const char *name) {
+ _cleanup_strv_free_ char **dirs = NULL, **files = NULL;
+ _cleanup_free_ char *path = NULL;
+ const char *dir;
+ char **t;
+ int r;
+
+ NULSTR_FOREACH(dir, CONF_PATHS_NULSTR("")) {
+ assert(endswith(dir, "/"));
+ r = strv_extendf(&dirs, "%s%s.d", dir, name);
+ if (r < 0)
+ return log_error_errno(r, "Failed to build directory list: %m");
+ }
+
+ r = conf_files_list_strv(&files, ".conf", root, 0, (const char* const*) dirs);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query file list: %m");
+
+ path = path_join(root, "/etc", name);
+ if (!path)
+ return log_oom();
+
+ if (DEBUG_LOGGING) {
+ log_debug("Looking for configuration in:");
+ log_debug(" %s", path);
+ STRV_FOREACH(t, dirs)
+ log_debug(" %s/*.conf", *t);
+ }
+
+ /* show */
+ return cat_files(path, files, CAT_FLAGS_MAIN_FILE_OPTIONAL);
}
~ianmdlvl / elogind.git / blobdiff