1 /* SPDX-License-Identifier: LGPL-2.1+ */
8 #include "alloc-util.h"
12 #include "path-util.h"
13 #include "stat-util.h"
14 #include "stdio-util.h"
15 #include "user-util.h"
17 /// Additional includes needed by elogind
20 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags, mkdir_func_t _mkdir) {
24 assert(_mkdir != mkdir);
26 if (_mkdir(path, mode) >= 0) {
27 r = chmod_and_chown(path, mode, uid, gid);
32 if (lstat(path, &st) < 0)
35 if ((flags & MKDIR_FOLLOW_SYMLINK) && S_ISLNK(st.st_mode)) {
36 _cleanup_free_ char *p = NULL;
38 r = chase_symlinks(path, NULL, CHASE_NONEXISTENT, &p);
42 return mkdir_safe_internal(p, mode, uid, gid,
43 flags & ~MKDIR_FOLLOW_SYMLINK,
46 if (lstat(p, &st) < 0)
50 if (!S_ISDIR(st.st_mode)) {
51 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
52 "Path \"%s\" already exists and is not a directory, refusing.", path);
55 if ((st.st_mode & 0007) > (mode & 0007) ||
56 (st.st_mode & 0070) > (mode & 0070) ||
57 (st.st_mode & 0700) > (mode & 0700)) {
58 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
59 "Directory \"%s\" already exists, but has mode %04o that is too permissive (%04o was requested), refusing.",
60 path, st.st_mode & 0777, mode);
63 if ((uid != UID_INVALID && st.st_uid != uid) ||
64 (gid != GID_INVALID && st.st_gid != gid)) {
65 char u[DECIMAL_STR_MAX(uid_t)] = "-", g[DECIMAL_STR_MAX(gid_t)] = "-";
67 if (uid != UID_INVALID)
68 xsprintf(u, UID_FMT, uid);
69 if (gid != UID_INVALID)
70 xsprintf(g, GID_FMT, gid);
71 log_full(flags & MKDIR_WARN_MODE ? LOG_WARNING : LOG_DEBUG,
72 "Directory \"%s\" already exists, but is owned by "UID_FMT":"GID_FMT" (%s:%s was requested), refusing.",
73 path, st.st_uid, st.st_gid, u, g);
80 int mkdir_errno_wrapper(const char *pathname, mode_t mode) {
81 if (mkdir(pathname, mode) < 0)
86 int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags) {
87 return mkdir_safe_internal(path, mode, uid, gid, flags, mkdir_errno_wrapper);
90 int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir) {
95 assert(_mkdir != mkdir);
97 if (prefix && !path_startswith(path, prefix))
100 /* return immediately if directory exists */
101 e = strrchr(path, '/');
108 p = strndupa(path, e - path);
115 /* create every parent directory in the path, except the last component */
116 p = path + strspn(path, "/");
118 char t[strlen(path) + 1];
120 e = p + strcspn(p, "/");
121 p = e + strspn(e, "/");
123 /* Is this the last component? If so, then we're done */
127 memcpy(t, path, e - path);
130 if (prefix && path_startswith(prefix, t))
134 if (r < 0 && r != -EEXIST)
139 int mkdir_parents(const char *path, mode_t mode) {
140 return mkdir_parents_internal(NULL, path, mode, mkdir_errno_wrapper);
143 int mkdir_p_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir) {
148 assert(_mkdir != mkdir);
150 r = mkdir_parents_internal(prefix, path, mode, _mkdir);
154 r = _mkdir(path, mode);
155 if (r < 0 && (r != -EEXIST || is_dir(path, true) <= 0))
161 int mkdir_p(const char *path, mode_t mode) {
162 return mkdir_p_internal(NULL, path, mode, mkdir_errno_wrapper);