diff options
Diffstat (limited to 'src/libsystemd-basic/src/conf-files.c')
| -rw-r--r-- | src/libsystemd-basic/src/conf-files.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/libsystemd-basic/src/conf-files.c b/src/libsystemd-basic/src/conf-files.c new file mode 100644 index 0000000000..39df2c97e4 --- /dev/null +++ b/src/libsystemd-basic/src/conf-files.c @@ -0,0 +1,166 @@ +/*** + 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 <errno.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "systemd-basic/conf-files.h" +#include "systemd-basic/dirent-util.h" +#include "systemd-basic/fd-util.h" +#include "systemd-basic/hashmap.h" +#include "systemd-basic/log.h" +#include "systemd-basic/macro.h" +#include "systemd-basic/missing.h" +#include "systemd-basic/path-util.h" +#include "systemd-basic/string-util.h" +#include "systemd-basic/strv.h" +#include "systemd-basic/util.h" + +static int files_add(Hashmap *h, const char *root, const char *path, const char *suffix) { + _cleanup_closedir_ DIR *dir = NULL; + const char *dirpath; + struct dirent *de; + int r; + + assert(path); + assert(suffix); + + dirpath = prefix_roota(root, path); + + dir = opendir(dirpath); + if (!dir) { + if (errno == ENOENT) + return 0; + return -errno; + } + + FOREACH_DIRENT(de, dir, return -errno) { + char *p; + + if (!dirent_is_file_with_suffix(de, suffix)) + continue; + + p = strjoin(dirpath, "/", de->d_name, NULL); + if (!p) + return -ENOMEM; + + 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); + free(p); + } + } + + return 0; +} + +static int base_cmp(const void *a, const void *b) { + const char *s1, *s2; + + s1 = *(char * const *)a; + s2 = *(char * const *)b; + return strcmp(basename(s1), basename(s2)); +} + +static int conf_files_list_strv_internal(char ***strv, const char *suffix, const char *root, char **dirs) { + _cleanup_hashmap_free_ Hashmap *fh = 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); + if (!fh) + return -ENOMEM; + + STRV_FOREACH(p, dirs) { + r = files_add(fh, root, *p, suffix); + if (r == -ENOMEM) + return r; + if (r < 0) + log_debug_errno(r, "Failed to search for files in %s, ignoring: %m", *p); + } + + files = hashmap_get_strv(fh); + 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) { + _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); +} + +int conf_files_list(char ***strv, const char *suffix, const char *root, 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); + va_end(ap); + + if (!dirs) + return -ENOMEM; + + return conf_files_list_strv_internal(strv, suffix, root, dirs); +} + +int conf_files_list_nulstr(char ***strv, const char *suffix, const char *root, const char *d) { + _cleanup_strv_free_ char **dirs = NULL; + + assert(strv); + assert(suffix); + + dirs = strv_split_nulstr(d); + if (!dirs) + return -ENOMEM; + + return conf_files_list_strv_internal(strv, suffix, root, dirs); +} |