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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 source tree.
*/
//config:config INSTALL
//config: bool "install (12 kb)"
//config: default y
//config: help
//config: Copy files and set attributes.
//config:
//config:config FEATURE_INSTALL_LONG_OPTIONS
//config: bool "Enable long options"
//config: default y
//config: depends on INSTALL && LONG_OPTS
//applet:IF_INSTALL(APPLET(install, BB_DIR_USR_BIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_INSTALL) += install.o
/* -v, -b, -c are ignored */
//usage:#define install_trivial_usage
//usage: "[-cdDsp] [-o USER] [-g GRP] [-m MODE] [-t DIR] [SOURCE]... DEST"
//usage:#define install_full_usage "\n\n"
//usage: "Copy files and set attributes\n"
//usage: "\n -c Just copy (default)"
//usage: "\n -d Create directories"
//usage: "\n -D Create leading target directories"
//usage: "\n -s Strip symbol table"
//usage: "\n -p Preserve date"
//usage: "\n -o USER Set ownership"
//usage: "\n -g GRP Set group ownership"
//usage: "\n -m MODE Set permissions"
//usage: "\n -t DIR Install to DIR"
//usage: IF_SELINUX(
//usage: "\n -Z Set security context"
//usage: )
#include "libbb.h"
#include "libcoreutils/coreutils.h"
#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
static const char install_longopts[] ALIGN1 =
IF_FEATURE_VERBOSE(
"verbose\0" No_argument "v"
)
"directory\0" No_argument "d"
"preserve-timestamps\0" No_argument "p"
"strip\0" No_argument "s"
"group\0" Required_argument "g"
"mode\0" Required_argument "m"
"owner\0" Required_argument "o"
"target-directory\0" Required_argument "t"
/* 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: can't 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 mkdir_flags = FILEUTILS_RECUR;
int copy_flags = FILEUTILS_DEREFERENCE | FILEUTILS_FORCE;
int opts;
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_MKDIR_LEADING = 1 << 3,
OPT_DIRECTORY = 1 << 4,
OPT_PRESERVE_TIME = 1 << 5,
OPT_STRIP = 1 << 6,
OPT_GROUP = 1 << 7,
OPT_MODE = 1 << 8,
OPT_OWNER = 1 << 9,
OPT_TARGET = 1 << 10,
#if ENABLE_SELINUX
OPT_SET_SECURITY_CONTEXT = 1 << 11,
OPT_PRESERVE_SECURITY_CONTEXT = 1 << 12,
#endif
};
#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
applet_long_options = install_longopts;
#endif
opt_complementary = "t--d:d--t:s--d:d--s" IF_FEATURE_INSTALL_LONG_OPTIONS(IF_SELINUX(":Z--\xff:\xff--Z"));
/* -c exists for backwards compatibility, it's needed */
/* -b is ignored ("make a backup of each existing destination file") */
opts = getopt32(argv, "cvb" "Ddpsg:m:o:t:" IF_SELINUX("Z:"),
&gid_str, &mode_str, &uid_str, &last
IF_SELINUX(, &scontext));
argc -= optind;
argv += optind;
#if ENABLE_SELINUX
if (opts & (OPT_PRESERVE_SECURITY_CONTEXT|OPT_SET_SECURITY_CONTEXT)) {
selinux_or_die();
use_default_selinux_context = 0;
if (opts & OPT_PRESERVE_SECURITY_CONTEXT) {
copy_flags |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
}
if (opts & OPT_SET_SECURITY_CONTEXT) {
setfscreatecon_or_die(scontext);
copy_flags |= FILEUTILS_SET_SECURITY_CONTEXT;
}
}
#endif
if ((opts & OPT_v) && FILEUTILS_VERBOSE) {
mkdir_flags |= FILEUTILS_VERBOSE;
copy_flags |= FILEUTILS_VERBOSE;
}
/* preserve access and modification time, this is GNU behaviour,
* BSD only preserves modification time */
if (opts & OPT_PRESERVE_TIME) {
copy_flags |= FILEUTILS_PRESERVE_STATUS;
}
mode = 0755; /* GNU coreutils 6.10 compat */
if (opts & OPT_MODE)
mode = bb_parse_mode(mode_str, mode);
uid = (opts & OPT_OWNER) ? get_ug_id(uid_str, xuname2uid) : getuid();
gid = (opts & OPT_GROUP) ? get_ug_id(gid_str, xgroup2gid) : getgid();
/* If -t DIR is in use, then isdir=true, last="DIR" */
isdir = (opts & OPT_TARGET);
if (!(opts & (OPT_TARGET|OPT_DIRECTORY))) {
/* Neither -t DIR nor -d is in use */
argc--;
last = argv[argc];
argv[argc] = NULL;
/* coreutils install resolves link in this case, don't use lstat */
isdir = stat(last, &statbuf) < 0 ? 0 : S_ISDIR(statbuf.st_mode);
}
if (argc < 1)
bb_show_usage();
while ((arg = *argv++) != NULL) {
char *dest;
if (opts & OPT_DIRECTORY) {
dest = arg;
/* GNU coreutils 6.9 does not set uid:gid
* on intermediate created directories
* (only on last one) */
if (bb_make_directory(dest, 0755, mkdir_flags)) {
ret = EXIT_FAILURE;
goto next;
}
} else {
dest = last;
if (opts & OPT_MKDIR_LEADING) {
char *ddir = xstrdup(dest);
bb_make_directory(dirname(ddir), 0755, mkdir_flags);
/* errors are not checked. copy_file
* will fail if dir is not created.
*/
free(ddir);
}
if (isdir)
dest = concat_path_file(last, bb_basename(arg));
if (copy_file(arg, dest, copy_flags) != 0) {
/* copy is not made */
ret = EXIT_FAILURE;
goto next;
}
if (opts & OPT_STRIP) {
char *args[4];
args[0] = (char*)"strip";
args[1] = (char*)"-p"; /* -p --preserve-dates */
args[2] = dest;
args[3] = NULL;
if (spawn_and_wait(args)) {
bb_perror_msg("strip");
ret = EXIT_FAILURE;
}
}
}
/* Set the file mode (always, not only with -m).
* GNU coreutils 6.10 is not affected by umask. */
if (chmod(dest, mode) == -1) {
bb_perror_msg("can't change %s of %s", "permissions", dest);
ret = EXIT_FAILURE;
}
#if ENABLE_SELINUX
if (use_default_selinux_context)
setdefaultfilecon(dest);
#endif
/* Set the user and group id */
if ((opts & (OPT_OWNER|OPT_GROUP))
&& lchown(dest, uid, gid) == -1
) {
bb_perror_msg("can't change %s of %s", "ownership", dest);
ret = EXIT_FAILURE;
}
next:
if (ENABLE_FEATURE_CLEAN_UP && isdir)
free(dest);
}
return ret;
}
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