1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2010 Lennart Poettering
13 #include "alloc-util.h"
17 #include "path-util.h"
18 #include "stat-util.h"
19 //#include "stdio-util.h"
20 #include "user-util.h"
22 /// Additional includes needed by elogind
25 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, bool follow_symlink, mkdir_func_t _mkdir) {
26 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags, mkdir_func_t _mkdir) {
30 assert(_mkdir != mkdir);
32 if (_mkdir(path, mode) >= 0) {
33 r = chmod_and_chown(path, mode, uid, gid);
38 if (lstat(path, &st) < 0)
41 if ((flags & MKDIR_FOLLOW_SYMLINK) && S_ISLNK(st.st_mode)) {
42 _cleanup_free_ char *p = NULL;
44 r = chase_symlinks(path, NULL, CHASE_NONEXISTENT, &p);
48 return mkdir_safe_internal(p, mode, uid, gid,
49 flags & ~MKDIR_FOLLOW_SYMLINK,
52 if (lstat(p, &st) < 0)
56 if (!S_ISDIR(st.st_mode)) {
57 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
58 "Path \"%s\" already exists and is not a directory, refusing.", path);
61 if ((st.st_mode & 0007) > (mode & 0007) ||
62 (st.st_mode & 0070) > (mode & 0070) ||
63 (st.st_mode & 0700) > (mode & 0700)) {
64 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
65 "Directory \"%s\" already exists, but has mode %04o that is too permissive (%04o was requested), refusing.",
66 path, st.st_mode & 0777, mode);
69 if ((uid != UID_INVALID && st.st_uid != uid) ||
70 (gid != GID_INVALID && st.st_gid != gid)) {
71 char u[DECIMAL_STR_MAX(uid_t)] = "-", g[DECIMAL_STR_MAX(gid_t)] = "-";
73 if (uid != UID_INVALID)
74 xsprintf(u, UID_FMT, uid);
75 if (gid != UID_INVALID)
76 xsprintf(g, GID_FMT, gid);
77 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
78 "Directory \"%s\" already exists, but is owned by "UID_FMT":"GID_FMT" (%s:%s was requested), refusing.",
79 path, st.st_uid, st.st_gid, u, g);
86 int mkdir_errno_wrapper(const char *pathname, mode_t mode) {
87 if (mkdir(pathname, mode) < 0)
92 int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags) {
93 return mkdir_safe_internal(path, mode, uid, gid, flags, mkdir_errno_wrapper);
96 int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir) {
101 assert(_mkdir != mkdir);
103 if (prefix && !path_startswith(path, prefix))
106 /* return immediately if directory exists */
107 e = strrchr(path, '/');
114 p = strndupa(path, e - path);
121 /* create every parent directory in the path, except the last component */
122 p = path + strspn(path, "/");
124 char t[strlen(path) + 1];
126 e = p + strcspn(p, "/");
127 p = e + strspn(e, "/");
129 /* Is this the last component? If so, then we're done */
133 memcpy(t, path, e - path);
136 if (prefix && path_startswith(prefix, t))
140 if (r < 0 && r != -EEXIST)
145 int mkdir_parents(const char *path, mode_t mode) {
146 return mkdir_parents_internal(NULL, path, mode, mkdir_errno_wrapper);
149 int mkdir_p_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir) {
154 assert(_mkdir != mkdir);
156 r = mkdir_parents_internal(prefix, path, mode, _mkdir);
160 r = _mkdir(path, mode);
161 if (r < 0 && (r != -EEXIST || is_dir(path, true) <= 0))
167 int mkdir_p(const char *path, mode_t mode) {
168 return mkdir_p_internal(NULL, path, mode, mkdir_errno_wrapper);