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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 2003 by Glenn McGrath
* SELinux support: by Yuichi Nakamura <ynakam@hitachisoft.jp>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
* TODO: -d option, need a way of recursively making directories and changing
* owner/group, will probably modify bb_make_directory(...)
*/
#include <libgen.h>
#include <getopt.h> /* struct option */
#include "libbb.h"
#include "libcoreutils/coreutils.h"
#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
static const char install_longopts[] ALIGN1 =
"directory\0" No_argument "d"
"preserve-timestamps\0" No_argument "p"
"strip\0" No_argument "s"
"group\0" No_argument "g"
"mode\0" No_argument "m"
"owner\0" No_argument "o"
/* autofs build insists of using -b --suffix=.orig */
/* TODO? (short option for --suffix is -S) */
#if ENABLE_SELINUX
"context\0" Required_argument "Z"
"preserve_context\0" No_argument "\xff"
"preserve-context\0" No_argument "\xff"
#endif
;
#endif
#if ENABLE_SELINUX
static void setdefaultfilecon(const char *path)
{
struct stat s;
security_context_t scontext = NULL;
if (!is_selinux_enabled()) {
return;
}
if (lstat(path, &s) != 0) {
return;
}
if (matchpathcon(path, s.st_mode, &scontext) < 0) {
goto out;
}
if (strcmp(scontext, "<<none>>") == 0) {
goto out;
}
if (lsetfilecon(path, scontext) < 0) {
if (errno != ENOTSUP) {
bb_perror_msg("warning: failed to change context of %s to %s", path, scontext);
}
}
out:
freecon(scontext);
}
#endif
int install_main(int argc, char **argv);
int install_main(int argc, char **argv)
{
struct stat statbuf;
mode_t mode;
uid_t uid;
gid_t gid;
char *arg, *last;
const char *gid_str;
const char *uid_str;
const char *mode_str;
int copy_flags = FILEUTILS_DEREFERENCE | FILEUTILS_FORCE;
int flags;
int ret = EXIT_SUCCESS;
int isdir;
#if ENABLE_SELINUX
security_context_t scontext;
bool use_default_selinux_context = 1;
#endif
enum {
OPT_c = 1 << 0,
OPT_v = 1 << 1,
OPT_b = 1 << 2,
OPT_DIRECTORY = 1 << 3,
OPT_PRESERVE_TIME = 1 << 4,
OPT_STRIP = 1 << 5,
OPT_GROUP = 1 << 6,
OPT_MODE = 1 << 7,
OPT_OWNER = 1 << 8,
#if ENABLE_SELINUX
OPT_SET_SECURITY_CONTEXT = 1 << 9,
OPT_PRESERVE_SECURITY_CONTEXT = 1 << 10,
#endif
};
#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
applet_long_options = install_longopts;
#endif
opt_complementary = "s--d:d--s" USE_SELINUX(":Z--\xff:\xff--Z");
/* -c exists for backwards compatibility, it's needed */
/* -v is ignored ("print name of each created directory") */
/* -b is ignored ("make a backup of each existing destination file") */
flags = getopt32(argv, "cvb" "dpsg:m:o:" USE_SELINUX("Z:"),
&gid_str, &mode_str, &uid_str USE_SELINUX(, &scontext));
argc -= optind;
argv += optind;
#if ENABLE_SELINUX
if (flags & (OPT_PRESERVE_SECURITY_CONTEXT|OPT_SET_SECURITY_CONTEXT)) {
selinux_or_die();
use_default_selinux_context = 0;
if (flags & OPT_PRESERVE_SECURITY_CONTEXT) {
copy_flags |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
}
if (flags & OPT_SET_SECURITY_CONTEXT) {
setfscreatecon_or_die(scontext);
copy_flags |= FILEUTILS_SET_SECURITY_CONTEXT;
}
}
#endif
/* preserve access and modification time, this is GNU behaviour, BSD only preserves modification time */
if (flags & OPT_PRESERVE_TIME) {
copy_flags |= FILEUTILS_PRESERVE_STATUS;
}
mode = 0666;
if (flags & OPT_MODE)
bb_parse_mode(mode_str, &mode);
uid = (flags & OPT_OWNER) ? get_ug_id(uid_str, xuname2uid) : getuid();
gid = (flags & OPT_GROUP) ? get_ug_id(gid_str, xgroup2gid) : getgid();
if (flags & (OPT_OWNER|OPT_GROUP))
umask(0);
/* Create directories
* don't use bb_make_directory() as it can't change uid or gid
* perhaps bb_make_directory() should be improved.
*/
if (flags & OPT_DIRECTORY) {
while ((arg = *argv++) != NULL) {
char *slash = arg;
while (1) {
slash = strchr(slash + 1, '/');
if (slash)
*slash = '\0';
if (mkdir(arg, mode | 0111) == -1) {
if (errno != EEXIST) {
bb_perror_msg("cannot create %s", arg);
ret = EXIT_FAILURE;
break;
}
} /* dir was created, chown? */
else if ((flags & (OPT_OWNER|OPT_GROUP))
&& lchown(arg, uid, gid) == -1
) {
bb_perror_msg("cannot change ownership of %s", arg);
ret = EXIT_FAILURE;
break;
}
if (!slash)
break;
*slash = '/';
}
}
return ret;
}
if (argc < 2)
bb_show_usage();
last = argv[argc - 1];
argv[argc - 1] = NULL;
/* coreutils install resolves link in this case, don't use lstat */
isdir = stat(last, &statbuf) < 0 ? 0 : S_ISDIR(statbuf.st_mode);
while ((arg = *argv++) != NULL) {
char *dest = last;
if (isdir)
dest = concat_path_file(last, basename(arg));
if (copy_file(arg, dest, copy_flags)) {
/* copy is not made */
ret = EXIT_FAILURE;
goto next;
}
/* Set the file mode */
if ((flags & OPT_MODE) && chmod(dest, mode) == -1) {
bb_perror_msg("cannot change permissions of %s", dest);
ret = EXIT_FAILURE;
}
#if ENABLE_SELINUX
if (use_default_selinux_context)
setdefaultfilecon(dest);
#endif
/* Set the user and group id */
if ((flags & (OPT_OWNER|OPT_GROUP))
&& lchown(dest, uid, gid) == -1
) {
bb_perror_msg("cannot change ownership of %s", dest);
ret = EXIT_FAILURE;
}
if (flags & OPT_STRIP) {
char *args[3];
args[0] = (char*)"strip";
args[1] = dest;
args[2] = NULL;
if (spawn_and_wait(args)) {
bb_perror_msg("strip");
ret = EXIT_FAILURE;
}
}
next:
if (ENABLE_FEATURE_CLEAN_UP && isdir)
free(dest);
}
return ret;
}
|
