1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 Copyright 2010 Lennart Poettering
11 #include "alloc-util.h"
15 #include "path-util.h"
16 #include "stat-util.h"
17 //#include "stdio-util.h"
18 #include "user-util.h"
20 /// Additional includes needed by elogind
23 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, bool follow_symlink, mkdir_func_t _mkdir) {
24 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags, mkdir_func_t _mkdir) {
28 assert(_mkdir != mkdir);
30 if (_mkdir(path, mode) >= 0) {
31 r = chmod_and_chown(path, mode, uid, gid);
36 if (lstat(path, &st) < 0)
39 if ((flags & MKDIR_FOLLOW_SYMLINK) && S_ISLNK(st.st_mode)) {
40 _cleanup_free_ char *p = NULL;
42 r = chase_symlinks(path, NULL, CHASE_NONEXISTENT, &p);
46 return mkdir_safe_internal(p, mode, uid, gid,
47 flags & ~MKDIR_FOLLOW_SYMLINK,
50 if (lstat(p, &st) < 0)
54 if (!S_ISDIR(st.st_mode)) {
55 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
56 "Path \"%s\" already exists and is not a directory, refusing.", path);
59 if ((st.st_mode & 0007) > (mode & 0007) ||
60 (st.st_mode & 0070) > (mode & 0070) ||
61 (st.st_mode & 0700) > (mode & 0700)) {
62 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
63 "Directory \"%s\" already exists, but has mode %04o that is too permissive (%04o was requested), refusing.",
64 path, st.st_mode & 0777, mode);
67 if ((uid != UID_INVALID && st.st_uid != uid) ||
68 (gid != GID_INVALID && st.st_gid != gid)) {
69 char u[DECIMAL_STR_MAX(uid_t)] = "-", g[DECIMAL_STR_MAX(gid_t)] = "-";
71 if (uid != UID_INVALID)
72 xsprintf(u, UID_FMT, uid);
73 if (gid != UID_INVALID)
74 xsprintf(g, GID_FMT, gid);
75 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
76 "Directory \"%s\" already exists, but is owned by "UID_FMT":"GID_FMT" (%s:%s was requested), refusing.",
77 path, st.st_uid, st.st_gid, u, g);
84 int mkdir_errno_wrapper(const char *pathname, mode_t mode) {
85 if (mkdir(pathname, mode) < 0)
90 int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags) {
91 return mkdir_safe_internal(path, mode, uid, gid, flags, mkdir_errno_wrapper);
94 int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir) {
99 assert(_mkdir != mkdir);
101 if (prefix && !path_startswith(path, prefix))
104 /* return immediately if directory exists */
105 e = strrchr(path, '/');
112 p = strndupa(path, e - path);
119 /* create every parent directory in the path, except the last component */
120 p = path + strspn(path, "/");
122 char t[strlen(path) + 1];
124 e = p + strcspn(p, "/");
125 p = e + strspn(e, "/");
127 /* Is this the last component? If so, then we're done */
131 memcpy(t, path, e - path);
134 if (prefix && path_startswith(prefix, t))
138 if (r < 0 && r != -EEXIST)
143 int mkdir_parents(const char *path, mode_t mode) {
144 return mkdir_parents_internal(NULL, path, mode, mkdir_errno_wrapper);
147 int mkdir_p_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir) {
152 assert(_mkdir != mkdir);
154 r = mkdir_parents_internal(prefix, path, mode, _mkdir);
158 r = _mkdir(path, mode);
159 if (r < 0 && (r != -EEXIST || is_dir(path, true) <= 0))
165 int mkdir_p(const char *path, mode_t mode) {
166 return mkdir_p_internal(NULL, path, mode, mkdir_errno_wrapper);