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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/* bubblewrap
* Copyright (C) 2016 Alexander Larsson
* SPDX-License-Identifier: LGPL-2.0-or-later
*
* This program 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 of the License, or (at your option) any later version.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#if 0
#define __debug__(x) printf x
#else
#define __debug__(x)
#endif
#define UNUSED __attribute__((__unused__))
#define N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
#define TRUE 1
#define FALSE 0
typedef int bool;
#define PIPE_READ_END 0
#define PIPE_WRITE_END 1
#ifndef PR_SET_CHILD_SUBREAPER
#define PR_SET_CHILD_SUBREAPER 36
#endif
void warn (const char *format,
...) __attribute__((format (printf, 1, 2)));
void die_with_error (const char *format,
...) __attribute__((__noreturn__)) __attribute__((format (printf, 1, 2)));
void die (const char *format,
...) __attribute__((__noreturn__)) __attribute__((format (printf, 1, 2)));
void die_oom (void) __attribute__((__noreturn__));
void die_unless_label_valid (const char *label);
void fork_intermediate_child (void);
void *xmalloc (size_t size);
void *xcalloc (size_t size);
void *xrealloc (void *ptr,
size_t size);
char *xstrdup (const char *str);
void strfreev (char **str_array);
void xclearenv (void);
void xsetenv (const char *name,
const char *value,
int overwrite);
void xunsetenv (const char *name);
char *strconcat (const char *s1,
const char *s2);
char *strconcat3 (const char *s1,
const char *s2,
const char *s3);
char * xasprintf (const char *format,
...) __attribute__((format (printf, 1, 2)));
bool has_prefix (const char *str,
const char *prefix);
bool has_path_prefix (const char *str,
const char *prefix);
bool path_equal (const char *path1,
const char *path2);
int fdwalk (int proc_fd,
int (*cb)(void *data,
int fd),
void *data);
char *load_file_data (int fd,
size_t *size);
char *load_file_at (int dirfd,
const char *path);
int write_file_at (int dirfd,
const char *path,
const char *content);
int write_to_fd (int fd,
const char *content,
ssize_t len);
int copy_file_data (int sfd,
int dfd);
int copy_file (const char *src_path,
const char *dst_path,
mode_t mode);
int create_file (const char *path,
mode_t mode,
const char *content);
int ensure_file (const char *path,
mode_t mode);
int ensure_dir (const char *path,
mode_t mode);
int get_file_mode (const char *pathname);
int mkdir_with_parents (const char *pathname,
mode_t mode,
bool create_last);
void create_pid_socketpair (int sockets[2]);
void send_pid_on_socket (int socket);
int read_pid_from_socket (int socket);
char *get_oldroot_path (const char *path);
char *readlink_malloc (const char *pathname);
/* syscall wrappers */
int raw_clone (unsigned long flags,
void *child_stack);
int pivot_root (const char *new_root,
const char *put_old);
char *label_mount (const char *opt,
const char *mount_label);
int label_exec (const char *exec_label);
int label_create_file (const char *file_label);
static inline void
cleanup_freep (void *p)
{
void **pp = (void **) p;
if (*pp)
free (*pp);
}
static inline void
cleanup_strvp (void *p)
{
void **pp = (void **) p;
strfreev (*pp);
}
static inline void
cleanup_fdp (int *fdp)
{
int fd;
assert (fdp);
fd = *fdp;
if (fd != -1)
(void) close (fd);
}
#define cleanup_free __attribute__((cleanup (cleanup_freep)))
#define cleanup_fd __attribute__((cleanup (cleanup_fdp)))
#define cleanup_strv __attribute__((cleanup (cleanup_strvp)))
static inline void *
steal_pointer (void *pp)
{
void **ptr = (void **) pp;
void *ref;
ref = *ptr;
*ptr = NULL;
return ref;
}
/* type safety */
#define steal_pointer(pp) \
(0 ? (*(pp)) : (steal_pointer) (pp))
|
