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/* 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) MAIN_EXTERNALLY_VISIBLE;
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;
}
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