| /* 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" |
| //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; |
| } |