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path: root/coreutils/install.c (plain)
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1/* vi: set sw=4 ts=4: */
2/*
3 * Copyright (C) 2003 by Glenn McGrath
4 * SELinux support: by Yuichi Nakamura <ynakam@hitachisoft.jp>
5 *
6 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
7 */
8//config:config INSTALL
9//config: bool "install"
10//config: default y
11//config: help
12//config: Copy files and set attributes.
13//config:
14//config:config FEATURE_INSTALL_LONG_OPTIONS
15//config: bool "Enable long options"
16//config: default y
17//config: depends on INSTALL && LONG_OPTS
18//config: help
19//config: Support long options for the install applet.
20
21//applet:IF_INSTALL(APPLET(install, BB_DIR_USR_BIN, BB_SUID_DROP))
22
23//kbuild:lib-$(CONFIG_INSTALL) += install.o
24
25/* -v, -b, -c are ignored */
26//usage:#define install_trivial_usage
27//usage: "[-cdDsp] [-o USER] [-g GRP] [-m MODE] [-t DIR] [SOURCE]... DEST"
28//usage:#define install_full_usage "\n\n"
29//usage: "Copy files and set attributes\n"
30//usage: "\n -c Just copy (default)"
31//usage: "\n -d Create directories"
32//usage: "\n -D Create leading target directories"
33//usage: "\n -s Strip symbol table"
34//usage: "\n -p Preserve date"
35//usage: "\n -o USER Set ownership"
36//usage: "\n -g GRP Set group ownership"
37//usage: "\n -m MODE Set permissions"
38//usage: "\n -t DIR Install to DIR"
39//usage: IF_SELINUX(
40//usage: "\n -Z Set security context"
41//usage: )
42
43#include "libbb.h"
44#include "libcoreutils/coreutils.h"
45
46#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
47static const char install_longopts[] ALIGN1 =
48 IF_FEATURE_VERBOSE(
49 "verbose\0" No_argument "v"
50 )
51 "directory\0" No_argument "d"
52 "preserve-timestamps\0" No_argument "p"
53 "strip\0" No_argument "s"
54 "group\0" Required_argument "g"
55 "mode\0" Required_argument "m"
56 "owner\0" Required_argument "o"
57 "target-directory\0" Required_argument "t"
58/* autofs build insists of using -b --suffix=.orig */
59/* TODO? (short option for --suffix is -S) */
60#if ENABLE_SELINUX
61 "context\0" Required_argument "Z"
62 "preserve_context\0" No_argument "\xff"
63 "preserve-context\0" No_argument "\xff"
64#endif
65 ;
66#endif
67
68
69#if ENABLE_SELINUX
70static void setdefaultfilecon(const char *path)
71{
72 struct stat s;
73 security_context_t scontext = NULL;
74
75 if (!is_selinux_enabled()) {
76 return;
77 }
78 if (lstat(path, &s) != 0) {
79 return;
80 }
81
82 if (matchpathcon(path, s.st_mode, &scontext) < 0) {
83 goto out;
84 }
85 if (strcmp(scontext, "<<none>>") == 0) {
86 goto out;
87 }
88
89 if (lsetfilecon(path, scontext) < 0) {
90 if (errno != ENOTSUP) {
91 bb_perror_msg("warning: can't change context"
92 " of %s to %s", path, scontext);
93 }
94 }
95
96 out:
97 freecon(scontext);
98}
99
100#endif
101
102int install_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
103int install_main(int argc, char **argv)
104{
105 struct stat statbuf;
106 mode_t mode;
107 uid_t uid;
108 gid_t gid;
109 char *arg, *last;
110 const char *gid_str;
111 const char *uid_str;
112 const char *mode_str;
113 int mkdir_flags = FILEUTILS_RECUR;
114 int copy_flags = FILEUTILS_DEREFERENCE | FILEUTILS_FORCE;
115 int opts;
116 int ret = EXIT_SUCCESS;
117 int isdir;
118#if ENABLE_SELINUX
119 security_context_t scontext;
120 bool use_default_selinux_context = 1;
121#endif
122 enum {
123 OPT_c = 1 << 0,
124 OPT_v = 1 << 1,
125 OPT_b = 1 << 2,
126 OPT_MKDIR_LEADING = 1 << 3,
127 OPT_DIRECTORY = 1 << 4,
128 OPT_PRESERVE_TIME = 1 << 5,
129 OPT_STRIP = 1 << 6,
130 OPT_GROUP = 1 << 7,
131 OPT_MODE = 1 << 8,
132 OPT_OWNER = 1 << 9,
133 OPT_TARGET = 1 << 10,
134#if ENABLE_SELINUX
135 OPT_SET_SECURITY_CONTEXT = 1 << 11,
136 OPT_PRESERVE_SECURITY_CONTEXT = 1 << 12,
137#endif
138 };
139
140#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
141 applet_long_options = install_longopts;
142#endif
143 opt_complementary = "t--d:d--t:s--d:d--s" IF_FEATURE_INSTALL_LONG_OPTIONS(IF_SELINUX(":Z--\xff:\xff--Z"));
144 /* -c exists for backwards compatibility, it's needed */
145 /* -b is ignored ("make a backup of each existing destination file") */
146 opts = getopt32(argv, "cvb" "Ddpsg:m:o:t:" IF_SELINUX("Z:"),
147 &gid_str, &mode_str, &uid_str, &last
148 IF_SELINUX(, &scontext));
149 argc -= optind;
150 argv += optind;
151
152#if ENABLE_SELINUX
153 if (opts & (OPT_PRESERVE_SECURITY_CONTEXT|OPT_SET_SECURITY_CONTEXT)) {
154 selinux_or_die();
155 use_default_selinux_context = 0;
156 if (opts & OPT_PRESERVE_SECURITY_CONTEXT) {
157 copy_flags |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
158 }
159 if (opts & OPT_SET_SECURITY_CONTEXT) {
160 setfscreatecon_or_die(scontext);
161 copy_flags |= FILEUTILS_SET_SECURITY_CONTEXT;
162 }
163 }
164#endif
165
166 if ((opts & OPT_v) && FILEUTILS_VERBOSE) {
167 mkdir_flags |= FILEUTILS_VERBOSE;
168 copy_flags |= FILEUTILS_VERBOSE;
169 }
170
171 /* preserve access and modification time, this is GNU behaviour,
172 * BSD only preserves modification time */
173 if (opts & OPT_PRESERVE_TIME) {
174 copy_flags |= FILEUTILS_PRESERVE_STATUS;
175 }
176 mode = 0755; /* GNU coreutils 6.10 compat */
177 if (opts & OPT_MODE)
178 mode = bb_parse_mode(mode_str, mode);
179 uid = (opts & OPT_OWNER) ? get_ug_id(uid_str, xuname2uid) : getuid();
180 gid = (opts & OPT_GROUP) ? get_ug_id(gid_str, xgroup2gid) : getgid();
181
182 /* If -t DIR is in use, then isdir=true, last="DIR" */
183 isdir = (opts & OPT_TARGET);
184 if (!(opts & (OPT_TARGET|OPT_DIRECTORY))) {
185 /* Neither -t DIR nor -d is in use */
186 argc--;
187 last = argv[argc];
188 argv[argc] = NULL;
189 /* coreutils install resolves link in this case, don't use lstat */
190 isdir = stat(last, &statbuf) < 0 ? 0 : S_ISDIR(statbuf.st_mode);
191 }
192
193 if (argc < 1)
194 bb_show_usage();
195
196 while ((arg = *argv++) != NULL) {
197 char *dest;
198
199 if (opts & OPT_DIRECTORY) {
200 dest = arg;
201 /* GNU coreutils 6.9 does not set uid:gid
202 * on intermediate created directories
203 * (only on last one) */
204 if (bb_make_directory(dest, 0755, mkdir_flags)) {
205 ret = EXIT_FAILURE;
206 goto next;
207 }
208 } else {
209 dest = last;
210 if (opts & OPT_MKDIR_LEADING) {
211 char *ddir = xstrdup(dest);
212 bb_make_directory(dirname(ddir), 0755, mkdir_flags);
213 /* errors are not checked. copy_file
214 * will fail if dir is not created. */
215 free(ddir);
216 }
217 if (isdir)
218 dest = concat_path_file(last, bb_basename(arg));
219 if (copy_file(arg, dest, copy_flags) != 0) {
220 /* copy is not made */
221 ret = EXIT_FAILURE;
222 goto next;
223 }
224 if (opts & OPT_STRIP) {
225 char *args[4];
226 args[0] = (char*)"strip";
227 args[1] = (char*)"-p"; /* -p --preserve-dates */
228 args[2] = dest;
229 args[3] = NULL;
230 if (spawn_and_wait(args)) {
231 bb_perror_msg("strip");
232 ret = EXIT_FAILURE;
233 }
234 }
235 }
236
237 /* Set the file mode (always, not only with -m).
238 * GNU coreutils 6.10 is not affected by umask. */
239 if (chmod(dest, mode) == -1) {
240 bb_perror_msg("can't change %s of %s", "permissions", dest);
241 ret = EXIT_FAILURE;
242 }
243#if ENABLE_SELINUX
244 if (use_default_selinux_context)
245 setdefaultfilecon(dest);
246#endif
247 /* Set the user and group id */
248 if ((opts & (OPT_OWNER|OPT_GROUP))
249 && lchown(dest, uid, gid) == -1
250 ) {
251 bb_perror_msg("can't change %s of %s", "ownership", dest);
252 ret = EXIT_FAILURE;
253 }
254 next:
255 if (ENABLE_FEATURE_CLEAN_UP && isdir)
256 free(dest);
257 }
258
259 return ret;
260}
261
generated by cgit at 2024-05-14 00:10:24 (GMT)