1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
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 <assert.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include "mkdir.h"
#include "label.h"
#include "util.h"
int mkdir_label(const char *path, mode_t mode) {
return label_mkdir(path, mode, true);
}
static int makedir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, bool apply) {
struct stat st;
if (label_mkdir(path, mode, apply) >= 0)
if (chmod_and_chown(path, mode, uid, gid) < 0)
return -errno;
if (lstat(path, &st) < 0)
return -errno;
if ((st.st_mode & 0777) != mode ||
st.st_uid != uid ||
st.st_gid != gid ||
!S_ISDIR(st.st_mode)) {
errno = EEXIST;
return -errno;
}
return 0;
}
int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid) {
return makedir_safe(path, mode, uid, gid, false);
}
int mkdir_safe_label(const char *path, mode_t mode, uid_t uid, gid_t gid) {
return makedir_safe(path, mode, uid, gid, true);
}
static int makedir_parents(const char *path, mode_t mode, bool apply) {
struct stat st;
const char *p, *e;
assert(path);
/* return immediately if directory exists */
e = strrchr(path, '/');
if (!e)
return -EINVAL;
p = strndupa(path, e - path);
if (stat(p, &st) >= 0) {
if ((st.st_mode & S_IFMT) == S_IFDIR)
return 0;
else
return -ENOTDIR;
}
/* create every parent directory in the path, except the last component */
p = path + strspn(path, "/");
for (;;) {
int r;
char *t;
e = p + strcspn(p, "/");
p = e + strspn(e, "/");
/* Is this the last component? If so, then we're
* done */
if (*p == 0)
return 0;
t = strndup(path, e - path);
if (!t)
return -ENOMEM;
r = label_mkdir(t, mode, apply);
free(t);
if (r < 0 && errno != EEXIST)
return -errno;
}
}
int mkdir_parents(const char *path, mode_t mode) {
return makedir_parents(path, mode, false);
}
int mkdir_parents_label(const char *path, mode_t mode) {
return makedir_parents(path, mode, true);
}
static int is_dir(const char* path) {
struct stat st;
if (stat(path, &st) < 0)
return -errno;
return S_ISDIR(st.st_mode);
}
static int makedir_p(const char *path, mode_t mode, bool apply) {
int r;
/* Like mkdir -p */
r = makedir_parents(path, mode, apply);
if (r < 0)
return r;
r = label_mkdir(path, mode, apply);
if (r < 0 && (errno != EEXIST || is_dir(path) <= 0))
return -errno;
return 0;
}
int mkdir_p(const char *path, mode_t mode) {
return makedir_p(path, mode, false);
}
int mkdir_p_label(const char *path, mode_t mode) {
return makedir_p(path, mode, true);
}
|
