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
|
/*-*- 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"
#include "log.h"
int safe_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid) {
struct stat st;
if (label_mkdir(path, mode) >= 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_parents(const char *path, mode_t mode) {
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);
free(t);
if (r < 0 && errno != EEXIST)
return -errno;
}
}
int mkdir_p(const char *path, mode_t mode) {
int r;
/* Like mkdir -p */
if ((r = mkdir_parents(path, mode)) < 0)
return r;
if (label_mkdir(path, mode) < 0 && errno != EEXIST)
return -errno;
return 0;
}
|
