X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Finstall.c;h=4adcadb940ebdb164f0de722fb0b3b76f6a6f765;hb=9bd8d0c23e867238bad53b04a029f71db9b88c3f;hp=9e5eb60377f0c7b5e01851894ce52f10a9bd20ce;hpb=064f04e7e2b1316f7c3de1ac7dd1fc4d4e108dd5;p=oweals%2Fbusybox.git diff --git a/coreutils/install.c b/coreutils/install.c index 9e5eb6037..4adcadb94 100644 --- a/coreutils/install.c +++ b/coreutils/install.c @@ -1,145 +1,225 @@ +/* vi: set sw=4 ts=4: */ /* - * Copyright (C) 2003 by Glenn McGrath - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Library General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * Copyright (C) 2003 by Glenn McGrath + * SELinux support: by Yuichi Nakamura * + * 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 -#include -#include -#include -#include -#include +#include #include /* struct option */ -#include "busybox.h" +#include "libbb.h" #include "libcoreutils/coreutils.h" -#define INSTALL_OPT_CMD 1 -#define INSTALL_OPT_DIRECTORY 2 -#define INSTALL_OPT_PRESERVE_TIME 4 -#define INSTALL_OPT_STRIP 8 -#define INSTALL_OPT_GROUP 16 -#define INSTALL_OPT_MODE 32 -#define INSTALL_OPT_OWNER 64 - -static const struct option install_long_options[] = { - { "directory", 0, NULL, 'd' }, - { "preserve-timestamps", 0, NULL, 'p' }, - { "strip", 0, NULL, 's' }, - { "group", 0, NULL, 'g' }, - { "mode", 0, NULL, 'm' }, - { "owner", 0, NULL, 'o' }, - { 0, 0, 0, 0 } -}; - -extern int install_main(int argc, char **argv) +#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, "<>") == 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 *gid_str = "-1"; - char *uid_str = "-1"; - char *mode_str = "0755"; + char *arg, *last; + const char *gid_str; + const char *uid_str; + const char *mode_str; int copy_flags = FILEUTILS_DEREFERENCE | FILEUTILS_FORCE; - int ret = EXIT_SUCCESS, flags, i, isdir; + 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 + }; - bb_applet_long_options = install_long_options; - bb_opt_complementally = "?s~d:d~s"; - /* -c exists for backwards compatability, its needed */ - flags = bb_getopt_ulflags(argc, argv, "cdpsg:m:o:", &gid_str, &mode_str, &uid_str); /* 'a' must be 2nd */ +#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 & INSTALL_OPT_PRESERVE_TIME) { + if (flags & OPT_PRESERVE_TIME) { copy_flags |= FILEUTILS_PRESERVE_STATUS; } - bb_parse_mode(mode_str, &mode); - gid = get_ug_id(gid_str, bb_xgetgrnam); - uid = get_ug_id(uid_str, bb_xgetpwnam); - umask(0); + 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 - * dont use bb_make_directory() as it cant change uid or gid + * don't use bb_make_directory() as it can't change uid or gid * perhaps bb_make_directory() should be improved. */ - if (flags & INSTALL_OPT_DIRECTORY) { - for (argv += optind; *argv; argv++) { - char *old_argv_ptr = *argv + 1; - char *argv_ptr; - do { - argv_ptr = strchr(old_argv_ptr, '/'); - old_argv_ptr = argv_ptr; - if (argv_ptr) { - *argv_ptr = '\0'; - old_argv_ptr++; - } - if (mkdir(*argv, mode) == -1) { + 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("coulnt create %s", *argv); + bb_perror_msg("cannot create %s", arg); ret = EXIT_FAILURE; break; } - } - else if (lchown(*argv, uid, gid) == -1) { - bb_perror_msg("cannot change ownership of %s", *argv); + } /* 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 (argv_ptr) { - *argv_ptr = '/'; - } - } while (old_argv_ptr); + if (!slash) + break; + *slash = '/'; + } } - return(ret); + return ret; } - { - struct stat statbuf; - isdir = lstat(argv[argc - 1], &statbuf)<0 - ? 0 : S_ISDIR(statbuf.st_mode); - } - for (i = optind; i < argc - 1; i++) { - unsigned char *dest; + if (argc < 2) + bb_show_usage(); - dest = argv[argc - 1]; - if (isdir) dest = concat_path_file(argv[argc - 1], basename(argv[i])); - ret |= copy_file(argv[i], dest, copy_flags); + 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 (chmod(dest, mode) == -1) { + 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 (lchown(dest, uid, gid) == -1) { + 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 & INSTALL_OPT_STRIP) { - if (execlp("strip", "strip", dest, NULL) == -1) { - bb_error_msg("strip failed"); + 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; } } - if(ENABLE_FEATURE_CLEAN_UP && isdir) free(dest); + next: + if (ENABLE_FEATURE_CLEAN_UP && isdir) + free(dest); } - return(ret); + return ret; }