X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Finstall.c;h=ab9feffaf105c54b157c3b05113ef9304db91a70;hb=138ce54c9c1930348bc842be781accd7c50c2cef;hp=305e02b0dc69b3c568ad7f415fbd0e0d95ebcef9;hpb=c7bda1ce659294d6e22c06e087f6f265983c7578;p=oweals%2Fbusybox.git diff --git a/coreutils/install.c b/coreutils/install.c index 305e02b0d..ab9feffaf 100644 --- a/coreutils/install.c +++ b/coreutils/install.c @@ -1,151 +1,212 @@ +/* vi: set sw=4 ts=4: */ /* - * Copyright (C) 2003 by Glenn McGrath + * Copyright (C) 2003 by Glenn McGrath + * SELinux support: by Yuichi Nakamura * - * 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. - * - * - * TODO: -d option, need a way of recursively making directories and changing - * owner/group, will probably modify bb_make_directory(...) + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -#include -#include -#include -#include -#include -#include -#include - -#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" Required_argument "g" + "mode\0" Required_argument "m" + "owner\0" Required_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: 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 *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 opts; + int min_args = 1; int ret = EXIT_SUCCESS; - int flags; - int i; + int isdir = 0; +#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, +#if ENABLE_SELINUX + OPT_SET_SECURITY_CONTEXT = 1 << 10, + OPT_PRESERVE_SECURITY_CONTEXT = 1 << 11, +#endif + }; - bb_applet_long_options = install_long_options; - bb_opt_complementaly = "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" IF_FEATURE_INSTALL_LONG_OPTIONS(IF_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") */ + opts = getopt32(argv, "cvb" "Ddpsg:m:o:" IF_SELINUX("Z:"), + &gid_str, &mode_str, &uid_str IF_SELINUX(, &scontext)); + argc -= optind; + argv += optind; - /* Check valid options were given */ - if(flags & 0x80000000UL) { - bb_show_usage(); +#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 - /* preserve access and modification time, this is GNU behaviour, BSD only preserves modification time */ - if (flags & INSTALL_OPT_PRESERVE_TIME) { + /* preserve access and modification time, this is GNU behaviour, + * BSD only preserves modification time */ + if (opts & OPT_PRESERVE_TIME) { copy_flags |= FILEUTILS_PRESERVE_STATUS; } - bb_parse_mode(mode_str, &mode); - gid = get_ug_id(gid_str, my_getgrnam); - uid = get_ug_id(uid_str, my_getpwnam); - umask(0); - - /* Create directories - * dont use bb_make_directory() as it cant 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 (errno != EEXIST) { - bb_perror_msg("coulnt create %s", *argv); - ret = EXIT_FAILURE; - break; - } - } - else if (lchown(*argv, uid, gid) == -1) { - bb_perror_msg("cannot change ownership of %s", *argv); - ret = EXIT_FAILURE; - break; - } - if (argv_ptr) { - *argv_ptr = '/'; - } - } while (old_argv_ptr); - } - return(ret); + mode = 0755; /* GNU coreutils 6.10 compat */ + if (opts & OPT_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(); + + last = argv[argc - 1]; + if (!(opts & OPT_DIRECTORY)) { + argv[argc - 1] = NULL; + min_args++; + + /* coreutils install resolves link in this case, don't use lstat */ + isdir = stat(last, &statbuf) < 0 ? 0 : S_ISDIR(statbuf.st_mode); } - cp_mv_stat2(argv[argc - 1], &statbuf, lstat); - for (i = optind; i < argc - 1; i++) { - unsigned char *dest; + if (argc < min_args) + bb_show_usage(); - if (S_ISDIR(statbuf.st_mode)) { - dest = concat_path_file(argv[argc - 1], basename(argv[i])); + while ((arg = *argv++) != NULL) { + char *dest = last; + 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, FILEUTILS_RECUR)) { + ret = EXIT_FAILURE; + goto next; + } } else { - dest = argv[argc - 1]; + if (opts & OPT_MKDIR_LEADING) { + char *ddir = xstrdup(dest); + bb_make_directory(dirname(ddir), 0755, FILEUTILS_RECUR); + /* 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; + } + } } - ret |= copy_file(argv[i], dest, copy_flags); - /* Set the file mode */ + /* 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("cannot change permissions of %s", dest); + 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 (lchown(dest, uid, gid) == -1) { - bb_perror_msg("cannot change ownership of %s", dest); + 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; } - if (flags & INSTALL_OPT_STRIP) { - if (execlp("strip", "strip", dest, NULL) == -1) { - bb_error_msg("strip failed"); - ret = EXIT_FAILURE; - } - } + next: + if (ENABLE_FEATURE_CLEAN_UP && isdir) + free(dest); } - return(ret); + return ret; }