/* install - copy files and set attributes Copyright (C) 89, 90, 91, 95, 96, 97, 1998 Free Software Foundation, Inc. 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, 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 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. */ /* Copy files and set their permission modes and, if possible, their owner and group. Used similarly to `cp'; typically used in Makefiles to copy programs into their destination directories. It can also be used to create the destination directories and any leading directories, and to set the final directory's modes. It refuses to copy files onto themselves. Options: -g, --group=GROUP Set the group ownership of the installed file or directory to the group ID of GROUP (default is process's current group). GROUP may also be a numeric group ID. -m, --mode=MODE Set the permission mode for the installed file or directory to MODE, which is an octal number (default is 0755). -o, --owner=OWNER If run as root, set the ownership of the installed file to the user ID of OWNER (default is root). OWNER may also be a numeric user ID. -c No effect. For compatibility with old Unix versions of install. -s, --strip Strip the symbol tables from installed files. -p, --preserve-timestamps Retain creation and modification timestamps when installing files. -d, --directory Create a directory and its leading directories, if they do not already exist. Set the owner, group and mode as given on the command line. Any leading directories that are created are also given those attributes. This is different from the SunOS 4.0 install, which gives directories that it creates the default attributes. -D Like the -d option, but a file is installed, along with the directory. Useful when installing into a new directory, and the install process doesn't properly comprehend making directories. David MacKenzie */ #ifdef _AIX #pragma alloca #endif #include #include #include #include #include #include #include "system.h" #include "backupfile.h" #include "modechange.h" #include "makepath.h" #include "closeout.h" #include "error.h" #include "xstrtol.h" #include "path-concat.h" #include "cp-hash.h" #include "copy.h" #if HAVE_SYS_WAIT_H # include #endif #if HAVE_VALUES_H # include #endif struct passwd *getpwnam (); struct group *getgrnam (); #ifndef _POSIX_VERSION uid_t getuid (); gid_t getgid (); #endif #if ! HAVE_ENDGRENT # define endgrent() ((void) 0) #endif #if ! HAVE_ENDPWENT # define endpwent() ((void) 0) #endif /* Initial number of entries in each hash table entry's table of inodes. */ #define INITIAL_HASH_MODULE 100 /* Initial number of entries in the inode hash table. */ #define INITIAL_ENTRY_TAB_SIZE 70 /* True if C is an ASCII octal digit. */ #define isodigit(c) ((c) >= '0' && c <= '7') /* Number of bytes of a file to copy at a time. */ #define READ_SIZE (32 * 1024) #ifndef UID_T_MAX # define UID_T_MAX TYPE_MAXIMUM (uid_t) #endif #ifndef GID_T_MAX # define GID_T_MAX TYPE_MAXIMUM (gid_t) #endif char *base_name (); char *dirname (); int full_write (); int isdir (); enum backup_type get_version (); int stat (); static int change_timestamps PARAMS ((const char *from, const char *to)); static int change_attributes PARAMS ((const char *path)); static int copy_file PARAMS ((const char *from, const char *to, const struct cp_options *x)); static int install_file_to_path PARAMS ((const char *from, const char *to, const struct cp_options *x)); static int install_file_in_dir PARAMS ((const char *from, const char *to_dir, const struct cp_options *x)); static int install_file_in_file PARAMS ((const char *from, const char *to, const struct cp_options *x)); static void get_ids PARAMS ((void)); static void strip PARAMS ((const char *path)); static void usage PARAMS ((int status)); /* The name this program was run with, for error messages. */ char *program_name; /* FIXME: document */ enum backup_type backup_type; /* The user name that will own the files, or NULL to make the owner the current user ID. */ static char *owner_name; /* The user ID corresponding to `owner_name'. */ static uid_t owner_id; /* The group name that will own the files, or NULL to make the group the current group ID. */ static char *group_name; /* The group ID corresponding to `group_name'. */ static gid_t group_id; /* The permissions to which the files will be set. The umask has no effect. */ static mode_t mode = 0755; /* If nonzero, strip executable files after copying them. */ static int strip_files; /* If nonzero, install a directory instead of a regular file. */ static int dir_arg; /* If nonzero, display usage information and exit. */ static int show_help; /* If nonzero, print the version on standard output and exit. */ static int show_version; static struct option const long_options[] = { {"strip", no_argument, NULL, 's'}, {"directory", no_argument, NULL, 'd'}, {"group", required_argument, NULL, 'g'}, {"mode", required_argument, NULL, 'm'}, {"owner", required_argument, NULL, 'o'}, {"preserve-timestamps", no_argument, NULL, 'p'}, {"backup", no_argument, NULL, 'b'}, {"version-control", required_argument, NULL, 'V'}, {"verbose", no_argument, NULL, 'v'}, {"help", no_argument, &show_help, 1}, {"version", no_argument, &show_version, 1}, {NULL, 0, NULL, 0} }; static void cp_option_init (struct cp_options *x) { x->copy_as_regular = 1; x->dereference = 1; x->force = 1; /* If unlink fails, try to proceed anyway. */ x->failed_unlink_is_fatal = 0; x->hard_link = 0; x->interactive = 0; x->move_mode = 0; x->myeuid = geteuid (); x->one_file_system = 0; x->preserve_owner_and_group = 0; x->preserve_chmod_bits = 0; x->preserve_timestamps = 0; x->require_preserve = 0; x->recursive = 0; x->sparse_mode = SPARSE_AUTO; x->symbolic_link = 0; /* Create destination files initially writable so we can run strip on them. Although GNU strip works fine on read-only files, some others would fail. */ x->set_mode = 1; x->mode = 0600; x->umask_kill = 0; x->update = 0; x->verbose = 0; x->xstat = stat; } int main (int argc, char **argv) { int optc; int errors = 0; char *symbolic_mode = NULL; int make_backups = 0; char *version; int mkdir_and_install = 0; struct cp_options x; int n_files; char **file; program_name = argv[0]; setlocale (LC_ALL, ""); bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); cp_option_init (&x); owner_name = NULL; group_name = NULL; strip_files = 0; dir_arg = 0; umask (0); version = getenv ("SIMPLE_BACKUP_SUFFIX"); if (version) simple_backup_suffix = version; version = getenv ("VERSION_CONTROL"); while ((optc = getopt_long (argc, argv, "bcsDdg:m:o:pvV:S:", long_options, NULL)) != -1) { switch (optc) { case 0: break; case 'b': make_backups = 1; break; case 'c': break; case 's': strip_files = 1; break; case 'd': dir_arg = 1; break; case 'D': mkdir_and_install = 1; break; case 'v': x.verbose = 0; break; case 'g': group_name = optarg; break; case 'm': symbolic_mode = optarg; break; case 'o': owner_name = optarg; break; case 'p': x.preserve_timestamps = 1; break; case 'S': simple_backup_suffix = optarg; break; case 'V': version = optarg; break; default: usage (1); } } if (show_version) { printf ("install (%s) %s\n", GNU_PACKAGE, VERSION); close_stdout (); exit (0); } if (show_help) usage (0); /* Check for invalid combinations of arguments. */ if (dir_arg && strip_files) error (1, 0, _("the strip option may not be used when installing a directory")); x.backup_type = (make_backups ? get_version (version) : none); n_files = argc - optind; file = argv + optind; if (n_files == 0 || (n_files == 1 && !dir_arg)) { error (0, 0, _("too few arguments")); usage (1); } if (symbolic_mode) { struct mode_change *change = mode_compile (symbolic_mode, 0); if (change == MODE_INVALID) error (1, 0, _("invalid mode `%s'"), symbolic_mode); else if (change == MODE_MEMORY_EXHAUSTED) error (1, 0, _("virtual memory exhausted")); mode = mode_adjust (0, change); } get_ids (); if (dir_arg) { int i; for (i = 0; i < n_files; i++) { errors |= make_path (file[i], mode, mode, owner_id, group_id, 0, (x.verbose ? "creating directory `%s'" : NULL)); } } else { /* FIXME: it's a little gross that this initialization is required by copy.c::copy. */ hash_init (INITIAL_HASH_MODULE, INITIAL_ENTRY_TAB_SIZE); if (n_files == 2) { if (mkdir_and_install) errors = install_file_to_path (file[0], file[1], &x); else if (!isdir (file[1])) errors = install_file_in_file (file[0], file[1], &x); else errors = install_file_in_dir (file[0], file[1], &x); } else { int i; const char *dest = file[n_files - 1]; if (!isdir (dest)) { error (0, 0, _("installing multiple files, but last argument (%s) \ is not a directory"), dest); usage (1); } for (i = 0; i < n_files - 1; i++) { errors |= install_file_in_dir (file[i], dest, &x); } } } if (x.verbose) close_stdout (); exit (errors); } /* Copy file FROM onto file TO, creating any missing parent directories of TO. Return 0 if successful, 1 if an error occurs */ static int install_file_to_path (const char *from, const char *to, const struct cp_options *x) { char *dest_dir; int fail; dest_dir = dirname (to); /* check to make sure this is a path (not install a b ) */ if (!STREQ (dest_dir, ".") && !isdir (dest_dir)) { /* FIXME: Note that it's a little kludgey (even dangerous) that we derive the permissions for parent directories from the permissions specfied for the file, but since this option is intended mainly to help installers when the distribution doesn't provide proper install rules, it's not so bad. Maybe use something like this instead: int parent_dir_mode = (mode | (S_IRUGO | S_IXUGO)) & (~SPECIAL_BITS); */ fail = make_path (dest_dir, mode, mode, owner_id, group_id, 0, (x->verbose ? _("creating directory `%s'") : NULL)); } else { fail = install_file_in_file (from, to, x); } free (dest_dir); return fail; } /* Copy file FROM onto file TO and give TO the appropriate attributes. Return 0 if successful, 1 if an error occurs. */ static int install_file_in_file (const char *from, const char *to, const struct cp_options *x) { if (copy_file (from, to, x)) return 1; if (strip_files) strip (to); if (change_attributes (to)) return 1; if (x->preserve_timestamps) return change_timestamps (from, to); return 0; } /* Copy file FROM into directory TO_DIR, keeping its same name, and give the copy the appropriate attributes. Return 0 if successful, 1 if not. */ static int install_file_in_dir (const char *from, const char *to_dir, const struct cp_options *x) { char *from_base; char *to; int ret; from_base = base_name (from); to = path_concat (to_dir, from_base, NULL); ret = install_file_in_file (from, to, x); free (to); return ret; } /* Copy file FROM onto file TO, creating TO if necessary. Return 0 if the copy is successful, 1 if not. */ static int copy_file (const char *from, const char *to, const struct cp_options *x) { int fail; int nonexistent_dst = 0; int copy_into_self; /* Allow installing from non-regular files like /dev/null. Charles Karney reported that some Sun version of install allows that and that sendmail's installation process relies on the behavior. */ if (isdir (from)) { error (0, 0, _("`%s' is a directory"), from); return 1; } fail = copy (from, to, nonexistent_dst, x, ©_into_self, NULL); return fail; } /* Set the attributes of file or directory PATH. Return 0 if successful, 1 if not. */ static int change_attributes (const char *path) { int err = 0; /* chown must precede chmod because on some systems, chown clears the set[ug]id bits for non-superusers, resulting in incorrect permissions. On System V, users can give away files with chown and then not be able to chmod them. So don't give files away. We don't normally ignore errors from chown because the idea of the install command is that the file is supposed to end up with precisely the attributes that the user specified (or defaulted). If the file doesn't end up with the group they asked for, they'll want to know. But AFS returns EPERM when you try to change a file's group; thus the kludge. */ if (chown (path, owner_id, group_id) #ifdef AFS && errno != EPERM #endif ) err = errno; if (chmod (path, mode)) err = errno; if (err) { error (0, err, "%s", path); return 1; } return 0; } /* Set the timestamps of file TO to match those of file FROM. Return 0 if successful, 1 if not. */ static int change_timestamps (const char *from, const char *to) { struct stat stb; struct utimbuf utb; if (stat (from, &stb)) { error (0, errno, "%s", from); return 1; } /* There's currently no interface to set file timestamps with better than 1-second resolution, so discard any fractional part of the source timestamp. */ utb.actime = stb.st_atime; utb.modtime = stb.st_mtime; if (utime (to, &utb)) { error (0, errno, "%s", to); return 1; } return 0; } /* Strip the symbol table from the file PATH. We could dig the magic number out of the file first to determine whether to strip it, but the header files and magic numbers vary so much from system to system that making it portable would be very difficult. Not worth the effort. */ static void strip (const char *path) { int pid, status; pid = fork (); switch (pid) { case -1: error (1, errno, _("fork system call failed")); break; case 0: /* Child. */ execlp ("strip", "strip", path, NULL); error (1, errno, _("cannot run strip")); break; default: /* Parent. */ /* Parent process. */ while (pid != wait (&status)) /* Wait for kid to finish. */ /* Do nothing. */ ; break; } } /* Initialize the user and group ownership of the files to install. */ static void get_ids (void) { struct passwd *pw; struct group *gr; if (owner_name) { pw = getpwnam (owner_name); if (pw == NULL) { long int tmp_long; if (xstrtol (owner_name, NULL, 0, &tmp_long, NULL) != LONGINT_OK || tmp_long < 0 || tmp_long > UID_T_MAX) error (1, 0, _("invalid user `%s'"), owner_name); owner_id = (uid_t) tmp_long; } else owner_id = pw->pw_uid; endpwent (); } else owner_id = (uid_t) -1; if (group_name) { gr = getgrnam (group_name); if (gr == NULL) { long int tmp_long; if (xstrtol (group_name, NULL, 0, &tmp_long, NULL) != LONGINT_OK || tmp_long < 0 || tmp_long > GID_T_MAX) error (1, 0, _("invalid group `%s'"), group_name); group_id = (gid_t) tmp_long; } else group_id = gr->gr_gid; endgrent (); } else group_id = (gid_t) -1; } static void usage (int status) { if (status != 0) fprintf (stderr, _("Try `%s --help' for more information.\n"), program_name); else { printf (_("\ Usage: %s [OPTION]... SOURCE DEST (1st format)\n\ or: %s [OPTION]... SOURCE... DIRECTORY (2nd format)\n\ or: %s -d [OPTION]... DIRECTORY... (3rd format)\n\ "), program_name, program_name, program_name); printf (_("\ In the first two formats, copy SOURCE to DEST or multiple SOURCE(s) to\n\ the existing DIRECTORY, while setting permission modes and owner/group.\n\ In the third format, create all components of the given DIRECTORY(ies).\n\ \n\ -b, --backup make backup before removal\n\ -c (ignored)\n\ -d, --directory treat all arguments as directory names; create all\n\ components of the specified directories\n\ -D create all leading components of DEST except the last,\n\ then copy SOURCE to DEST; useful in the 1st format\n\ -g, --group=GROUP set group ownership, instead of process' current group\n\ -m, --mode=MODE set permission mode (as in chmod), instead of rwxr-xr-x\n\ -o, --owner=OWNER set ownership (super-user only)\n\ -p, --preserve-timestamps apply access/modification times of SOURCE files\n\ to corresponding destination files\n\ -s, --strip strip symbol tables, only for 1st and 2nd formats\n\ -S, --suffix=SUFFIX override the usual backup suffix\n\ --verbose print the name of each directory as it is created\n\ -V, --version-control=WORD override the usual version control\n\ --help display this help and exit\n\ --version output version information and exit\n\ \n\ ")); printf (_("\ The backup suffix is ~, unless set with SIMPLE_BACKUP_SUFFIX. The\n\ version control may be set with VERSION_CONTROL, values are:\n\ \n\ t, numbered make numbered backups\n\ nil, existing numbered if numbered backups exist, simple otherwise\n\ never, simple always make simple backups\n\ ")); puts (_("\nReport bugs to .")); close_stdout (); } exit (status); }