260 lines
6.9 KiB
C
260 lines
6.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) 2003 by Glenn McGrath
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* SELinux support: by Yuichi Nakamura <ynakam@hitachisoft.jp>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config INSTALL
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//config: bool "install (12 kb)"
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//config: default y
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//config: help
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//config: Copy files and set attributes.
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//config:
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//config:config FEATURE_INSTALL_LONG_OPTIONS
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//config: bool "Enable long options"
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//config: default y
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//config: depends on INSTALL && LONG_OPTS
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//applet:IF_INSTALL(APPLET(install, BB_DIR_USR_BIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_INSTALL) += install.o
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/* -v, -b, -c are ignored */
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//usage:#define install_trivial_usage
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//usage: "[-cdDsp] [-o USER] [-g GRP] [-m MODE] [-t DIR] [SOURCE]... DEST"
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//usage:#define install_full_usage "\n\n"
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//usage: "Copy files and set attributes\n"
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//usage: "\n -c Just copy (default)"
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//usage: "\n -d Create directories"
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//usage: "\n -D Create leading target directories"
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//usage: "\n -s Strip symbol table"
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//usage: "\n -p Preserve date"
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//usage: "\n -o USER Set ownership"
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//usage: "\n -g GRP Set group ownership"
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//usage: "\n -m MODE Set permissions"
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//usage: "\n -t DIR Install to DIR"
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//usage: IF_SELINUX(
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//usage: "\n -Z Set security context"
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//usage: )
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#include "libbb.h"
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#include "libcoreutils/coreutils.h"
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#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
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static const char install_longopts[] ALIGN1 =
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IF_FEATURE_VERBOSE(
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"verbose\0" No_argument "v"
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)
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"directory\0" No_argument "d"
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"preserve-timestamps\0" No_argument "p"
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"strip\0" No_argument "s"
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"group\0" Required_argument "g"
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"mode\0" Required_argument "m"
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"owner\0" Required_argument "o"
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"target-directory\0" Required_argument "t"
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/* autofs build insists of using -b --suffix=.orig */
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/* TODO? (short option for --suffix is -S) */
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#if ENABLE_SELINUX
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"context\0" Required_argument "Z"
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"preserve_context\0" No_argument "\xff"
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"preserve-context\0" No_argument "\xff"
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#endif
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;
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#endif
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#if ENABLE_SELINUX
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static void setdefaultfilecon(const char *path)
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{
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struct stat s;
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security_context_t scontext = NULL;
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if (!is_selinux_enabled()) {
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return;
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}
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if (lstat(path, &s) != 0) {
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return;
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}
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if (matchpathcon(path, s.st_mode, &scontext) < 0) {
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goto out;
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}
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if (strcmp(scontext, "<<none>>") == 0) {
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goto out;
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}
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if (lsetfilecon(path, scontext) < 0) {
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if (errno != ENOTSUP) {
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bb_perror_msg("warning: can't change context"
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" of %s to %s", path, scontext);
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}
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}
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out:
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freecon(scontext);
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}
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#endif
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int install_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int install_main(int argc, char **argv)
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{
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struct stat statbuf;
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mode_t mode;
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uid_t uid;
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gid_t gid;
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char *arg, *last;
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const char *gid_str;
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const char *uid_str;
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const char *mode_str;
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int mkdir_flags = FILEUTILS_RECUR;
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int copy_flags = FILEUTILS_DEREFERENCE | FILEUTILS_FORCE;
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int opts;
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int ret = EXIT_SUCCESS;
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int isdir;
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#if ENABLE_SELINUX
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security_context_t scontext;
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bool use_default_selinux_context = 1;
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#endif
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enum {
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OPT_c = 1 << 0,
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OPT_v = 1 << 1,
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OPT_b = 1 << 2,
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OPT_MKDIR_LEADING = 1 << 3,
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OPT_DIRECTORY = 1 << 4,
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OPT_PRESERVE_TIME = 1 << 5,
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OPT_STRIP = 1 << 6,
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OPT_GROUP = 1 << 7,
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OPT_MODE = 1 << 8,
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OPT_OWNER = 1 << 9,
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OPT_TARGET = 1 << 10,
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#if ENABLE_SELINUX
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OPT_SET_SECURITY_CONTEXT = 1 << 11,
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OPT_PRESERVE_SECURITY_CONTEXT = 1 << 12,
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#endif
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};
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#if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
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applet_long_options = install_longopts;
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#endif
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opt_complementary = "t--d:d--t:s--d:d--s" IF_FEATURE_INSTALL_LONG_OPTIONS(IF_SELINUX(":Z--\xff:\xff--Z"));
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/* -c exists for backwards compatibility, it's needed */
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/* -b is ignored ("make a backup of each existing destination file") */
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opts = getopt32(argv, "cvb" "Ddpsg:m:o:t:" IF_SELINUX("Z:"),
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&gid_str, &mode_str, &uid_str, &last
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IF_SELINUX(, &scontext));
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argc -= optind;
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argv += optind;
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#if ENABLE_SELINUX
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if (opts & (OPT_PRESERVE_SECURITY_CONTEXT|OPT_SET_SECURITY_CONTEXT)) {
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selinux_or_die();
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use_default_selinux_context = 0;
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if (opts & OPT_PRESERVE_SECURITY_CONTEXT) {
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copy_flags |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
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}
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if (opts & OPT_SET_SECURITY_CONTEXT) {
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setfscreatecon_or_die(scontext);
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copy_flags |= FILEUTILS_SET_SECURITY_CONTEXT;
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}
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}
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#endif
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if ((opts & OPT_v) && FILEUTILS_VERBOSE) {
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mkdir_flags |= FILEUTILS_VERBOSE;
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copy_flags |= FILEUTILS_VERBOSE;
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}
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/* preserve access and modification time, this is GNU behaviour,
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* BSD only preserves modification time */
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if (opts & OPT_PRESERVE_TIME) {
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copy_flags |= FILEUTILS_PRESERVE_STATUS;
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}
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mode = 0755; /* GNU coreutils 6.10 compat */
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if (opts & OPT_MODE)
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mode = bb_parse_mode(mode_str, mode);
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uid = (opts & OPT_OWNER) ? get_ug_id(uid_str, xuname2uid) : getuid();
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gid = (opts & OPT_GROUP) ? get_ug_id(gid_str, xgroup2gid) : getgid();
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/* If -t DIR is in use, then isdir=true, last="DIR" */
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isdir = (opts & OPT_TARGET);
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if (!(opts & (OPT_TARGET|OPT_DIRECTORY))) {
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/* Neither -t DIR nor -d is in use */
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argc--;
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last = argv[argc];
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argv[argc] = NULL;
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/* coreutils install resolves link in this case, don't use lstat */
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isdir = stat(last, &statbuf) < 0 ? 0 : S_ISDIR(statbuf.st_mode);
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}
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if (argc < 1)
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bb_show_usage();
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while ((arg = *argv++) != NULL) {
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char *dest;
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if (opts & OPT_DIRECTORY) {
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dest = arg;
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/* GNU coreutils 6.9 does not set uid:gid
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* on intermediate created directories
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* (only on last one) */
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if (bb_make_directory(dest, 0755, mkdir_flags)) {
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ret = EXIT_FAILURE;
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goto next;
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}
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} else {
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dest = last;
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if (opts & OPT_MKDIR_LEADING) {
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char *ddir = xstrdup(dest);
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bb_make_directory(dirname(ddir), 0755, mkdir_flags);
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/* errors are not checked. copy_file
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* will fail if dir is not created.
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*/
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free(ddir);
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}
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if (isdir)
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dest = concat_path_file(last, bb_basename(arg));
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if (copy_file(arg, dest, copy_flags) != 0) {
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/* copy is not made */
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ret = EXIT_FAILURE;
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goto next;
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}
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if (opts & OPT_STRIP) {
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char *args[4];
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args[0] = (char*)"strip";
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args[1] = (char*)"-p"; /* -p --preserve-dates */
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args[2] = dest;
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args[3] = NULL;
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if (spawn_and_wait(args)) {
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bb_perror_msg("strip");
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ret = EXIT_FAILURE;
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}
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}
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}
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/* Set the file mode (always, not only with -m).
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* GNU coreutils 6.10 is not affected by umask. */
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if (chmod(dest, mode) == -1) {
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bb_perror_msg("can't change %s of %s", "permissions", dest);
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ret = EXIT_FAILURE;
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}
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#if ENABLE_SELINUX
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if (use_default_selinux_context)
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setdefaultfilecon(dest);
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#endif
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/* Set the user and group id */
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if ((opts & (OPT_OWNER|OPT_GROUP))
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&& lchown(dest, uid, gid) == -1
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) {
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bb_perror_msg("can't change %s of %s", "ownership", dest);
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ret = EXIT_FAILURE;
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}
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next:
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if (ENABLE_FEATURE_CLEAN_UP && isdir)
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free(dest);
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}
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return ret;
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}
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