/* install - copy files and set attributes
- Copyright (C) 89, 90, 91, 1995-2008 Free Software Foundation, Inc.
+ Copyright (C) 1989-2013 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
#include <pwd.h>
#include <grp.h>
#include <selinux/selinux.h>
+#include <sys/wait.h>
#include "system.h"
#include "backupfile.h"
#include "cp-hash.h"
#include "copy.h"
#include "filenamecat.h"
+#include "full-read.h"
#include "mkancesdirs.h"
#include "mkdir-p.h"
#include "modechange.h"
#include "utimens.h"
#include "xstrtol.h"
-/* The official name of this program (e.g., no `g' prefix). */
+/* The official name of this program (e.g., no 'g' prefix). */
#define PROGRAM_NAME "install"
#define AUTHORS proper_name ("David MacKenzie")
-#if HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-
static int selinux_enabled = 0;
static bool use_default_selinux_context = true;
# define matchpathcon_init_prefix(a, p) /* empty */
#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
-
-/* Number of bytes of a file to copy at a time. */
-#define READ_SIZE (32 * 1024)
-
-static bool change_timestamps (struct stat const *from_sb, char const *to);
-static bool change_attributes (char const *name);
-static bool copy_file (const char *from, const char *to,
- const struct cp_options *x);
-static bool install_file_in_file_parents (char const *from, char *to,
- struct cp_options *x);
-static bool install_file_in_dir (const char *from, const char *to_dir,
- const struct cp_options *x);
-static bool install_file_in_file (const char *from, const char *to,
- const struct cp_options *x);
-static void get_ids (void);
-static void strip (char const *name);
-static void announce_mkdir (char const *dir, void *options);
-static int make_ancestor (char const *dir, char const *component,
- void *options);
-void usage (int status);
-
/* 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'. */
+/* 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'. */
+/* The group ID corresponding to 'group_name'. */
static gid_t group_id;
#define DEFAULT_MODE (S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)
or S_ISGID bits. */
static mode_t dir_mode_bits = CHMOD_MODE_BITS;
+/* Compare files before installing (-C) */
+static bool copy_only_if_needed;
+
/* If true, strip executable files after copying them. */
static bool strip_files;
static bool dir_arg;
/* Program used to strip binaries, "strip" is default */
-static char *strip_program = "strip";
+static char const *strip_program = "strip";
/* For long options that have no equivalent short option, use a
non-character as a pseudo short option, starting with CHAR_MAX + 1. */
static struct option const long_options[] =
{
{"backup", optional_argument, NULL, 'b'},
+ {"compare", no_argument, NULL, 'C'},
{GETOPT_SELINUX_CONTEXT_OPTION_DECL},
{"directory", no_argument, NULL, 'd'},
{"group", required_argument, NULL, 'g'},
{"owner", required_argument, NULL, 'o'},
{"preserve-timestamps", no_argument, NULL, 'p'},
{"preserve-context", no_argument, NULL, PRESERVE_CONTEXT_OPTION},
- /* Continue silent support for --preserve_context until Jan 2008. FIXME-obs
- After that, FIXME-obs: warn in, say, late 2008, and disable altogether
- a year or two later. */
- {"preserve_context", no_argument, NULL, PRESERVE_CONTEXT_OPTION},
{"strip", no_argument, NULL, 's'},
{"strip-program", required_argument, NULL, STRIP_PROGRAM_OPTION},
{"suffix", required_argument, NULL, 'S'},
{NULL, 0, NULL, 0}
};
+/* Compare content of opened files using file descriptors A_FD and B_FD. Return
+ true if files are equal. */
+static bool
+have_same_content (int a_fd, int b_fd)
+{
+ enum { CMP_BLOCK_SIZE = 4096 };
+ static char a_buff[CMP_BLOCK_SIZE];
+ static char b_buff[CMP_BLOCK_SIZE];
+
+ size_t size;
+ while (0 < (size = full_read (a_fd, a_buff, sizeof a_buff))) {
+ if (size != full_read (b_fd, b_buff, sizeof b_buff))
+ return false;
+
+ if (memcmp (a_buff, b_buff, size) != 0)
+ return false;
+ }
+
+ return size == 0;
+}
+
+/* Return true for mode with non-permission bits. */
+static bool
+extra_mode (mode_t input)
+{
+ mode_t mask = S_IRWXUGO | S_IFMT;
+ return !! (input & ~ mask);
+}
+
+/* Return true if copy of file SRC_NAME to file DEST_NAME is necessary. */
+static bool
+need_copy (const char *src_name, const char *dest_name,
+ const struct cp_options *x)
+{
+ struct stat src_sb, dest_sb;
+ int src_fd, dest_fd;
+ bool content_match;
+
+ if (extra_mode (mode))
+ return true;
+
+ /* compare files using stat */
+ if (lstat (src_name, &src_sb) != 0)
+ return true;
+
+ if (lstat (dest_name, &dest_sb) != 0)
+ return true;
+
+ if (!S_ISREG (src_sb.st_mode) || !S_ISREG (dest_sb.st_mode)
+ || extra_mode (src_sb.st_mode) || extra_mode (dest_sb.st_mode))
+ return true;
+
+ if (src_sb.st_size != dest_sb.st_size
+ || (dest_sb.st_mode & CHMOD_MODE_BITS) != mode)
+ return true;
+
+ if (owner_id == (uid_t) -1)
+ {
+ errno = 0;
+ uid_t ruid = getuid ();
+ if ((ruid == (uid_t) -1 && errno) || dest_sb.st_uid != ruid)
+ return true;
+ }
+ else if (dest_sb.st_uid != owner_id)
+ return true;
+
+ if (group_id == (uid_t) -1)
+ {
+ errno = 0;
+ gid_t rgid = getgid ();
+ if ((rgid == (uid_t) -1 && errno) || dest_sb.st_gid != rgid)
+ return true;
+ }
+ else if (dest_sb.st_gid != group_id)
+ return true;
+
+ /* compare SELinux context if preserving */
+ if (selinux_enabled && x->preserve_security_context)
+ {
+ security_context_t file_scontext = NULL;
+ security_context_t to_scontext = NULL;
+ bool scontext_match;
+
+ if (getfilecon (src_name, &file_scontext) == -1)
+ return true;
+
+ if (getfilecon (dest_name, &to_scontext) == -1)
+ {
+ freecon (file_scontext);
+ return true;
+ }
+
+ scontext_match = STREQ (file_scontext, to_scontext);
+
+ freecon (file_scontext);
+ freecon (to_scontext);
+ if (!scontext_match)
+ return true;
+ }
+
+ /* compare files content */
+ src_fd = open (src_name, O_RDONLY | O_BINARY);
+ if (src_fd < 0)
+ return true;
+
+ dest_fd = open (dest_name, O_RDONLY | O_BINARY);
+ if (dest_fd < 0)
+ {
+ close (src_fd);
+ return true;
+ }
+
+ content_match = have_same_content (src_fd, dest_fd);
+
+ close (src_fd);
+ close (dest_fd);
+ return !content_match;
+}
+
static void
cp_option_init (struct cp_options *x)
{
cp_options_default (x);
x->copy_as_regular = true;
+ x->reflink_mode = REFLINK_NEVER;
x->dereference = DEREF_ALWAYS;
x->unlink_dest_before_opening = true;
x->unlink_dest_after_failed_open = false;
x->preserve_links = false;
x->preserve_mode = false;
x->preserve_timestamps = false;
+ x->explicit_no_preserve_mode = false;
+ x->reduce_diagnostics=false;
+ x->data_copy_required = true;
x->require_preserve = false;
x->require_preserve_context = false;
+ x->require_preserve_xattr = false;
x->recursive = false;
x->sparse_mode = SPARSE_AUTO;
x->symbolic_link = false;
x->open_dangling_dest_symlink = false;
x->update = false;
x->preserve_security_context = false;
+ x->preserve_xattr = false;
x->verbose = false;
x->dest_info = NULL;
x->src_info = NULL;
if (first_call && IS_ABSOLUTE_FILE_NAME (file))
{
/* Calling matchpathcon_init_prefix (NULL, "/first_component/")
- is an optimization to minimize the expense of the following
- matchpathcon call. Do it only once, just before the first
- matchpathcon call. We *could* call matchpathcon_fini after
- the final matchpathcon call, but that's not necessary, since
- by then we're about to exit, and besides, the buffers it
- would free are still reachable. */
+ is an optimization to minimize the expense of the following
+ matchpathcon call. Do it only once, just before the first
+ matchpathcon call. We *could* call matchpathcon_fini after
+ the final matchpathcon call, but that's not necessary, since
+ by then we're about to exit, and besides, the buffers it
+ would free are still reachable. */
char const *p0;
char const *p = file + 1;
while (ISSLASH (*p))
- ++p;
+ ++p;
/* Record final leading slash, for when FILE starts with two or more. */
p0 = p - 1;
if (*p)
- {
- char *prefix;
- do
- {
- ++p;
- }
- while (*p && !ISSLASH (*p));
-
- prefix = malloc (p - p0 + 2);
- if (prefix)
- {
- stpcpy (stpncpy (prefix, p0, p - p0), "/");
- matchpathcon_init_prefix (NULL, prefix);
- free (prefix);
- }
- }
+ {
+ char *prefix;
+ do
+ {
+ ++p;
+ }
+ while (*p && !ISSLASH (*p));
+
+ prefix = malloc (p - p0 + 2);
+ if (prefix)
+ {
+ stpcpy (stpncpy (prefix, p0, p - p0), "/");
+ matchpathcon_init_prefix (NULL, prefix);
+ free (prefix);
+ }
+ }
}
first_call = false;
/* If there's an error determining the context, or it has none,
return to allow default context */
- if ((matchpathcon (file, st.st_mode, &scontext) != 0) ||
- STREQ (scontext, "<<none>>"))
+ if ((matchpathcon (file, st.st_mode, &scontext) != 0)
+ || STREQ (scontext, "<<none>>"))
{
if (scontext != NULL)
- freecon (scontext);
+ freecon (scontext);
return;
}
if (lsetfilecon (file, scontext) < 0 && errno != ENOTSUP)
error (0, errno,
- _("warning: %s: failed to change context to %s"),
- quotearg_colon (file), scontext);
+ _("warning: %s: failed to change context to %s"),
+ quotearg_colon (file), scontext);
freecon (scontext);
return;
return is_a_dir;
}
-/* Process a command-line file name, for the -d option. */
-static int
-process_dir (char *dir, struct savewd *wd, void *options)
-{
- return (make_dir_parents (dir, wd,
- make_ancestor, options,
- dir_mode, announce_mkdir,
- dir_mode_bits, owner_id, group_id, false)
- ? EXIT_SUCCESS
- : EXIT_FAILURE);
-}
-
-int
-main (int argc, char **argv)
-{
- int optc;
- int exit_status = EXIT_SUCCESS;
- const char *specified_mode = NULL;
- bool make_backups = false;
- char *backup_suffix_string;
- char *version_control_string = NULL;
- bool mkdir_and_install = false;
- struct cp_options x;
- char const *target_directory = NULL;
- bool no_target_directory = false;
- int n_files;
- char **file;
- bool strip_program_specified = false;
- security_context_t scontext = NULL;
- /* set iff kernel has extra selinux system calls */
- selinux_enabled = (0 < is_selinux_enabled ());
-
- initialize_main (&argc, &argv);
- set_program_name (argv[0]);
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- atexit (close_stdin);
-
- cp_option_init (&x);
-
- owner_name = NULL;
- group_name = NULL;
- strip_files = false;
- dir_arg = false;
- umask (0);
-
- /* FIXME: consider not calling getenv for SIMPLE_BACKUP_SUFFIX unless
- we'll actually use backup_suffix_string. */
- backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX");
-
- while ((optc = getopt_long (argc, argv, "bcsDdg:m:o:pt:TvS:Z:", long_options,
- NULL)) != -1)
- {
- switch (optc)
- {
- case 'b':
- make_backups = true;
- if (optarg)
- version_control_string = optarg;
- break;
- case 'c':
- break;
- case 's':
- strip_files = true;
-#ifdef SIGCHLD
- /* System V fork+wait does not work if SIGCHLD is ignored. */
- signal (SIGCHLD, SIG_DFL);
-#endif
- break;
- case STRIP_PROGRAM_OPTION:
- strip_program = xstrdup (optarg);
- strip_program_specified = true;
- break;
- case 'd':
- dir_arg = true;
- break;
- case 'D':
- mkdir_and_install = true;
- break;
- case 'v':
- x.verbose = true;
- break;
- case 'g':
- group_name = optarg;
- break;
- case 'm':
- specified_mode = optarg;
- break;
- case 'o':
- owner_name = optarg;
- break;
- case 'p':
- x.preserve_timestamps = true;
- break;
- case 'S':
- make_backups = true;
- backup_suffix_string = optarg;
- break;
- case 't':
- if (target_directory)
- error (EXIT_FAILURE, 0,
- _("multiple target directories specified"));
- else
- {
- struct stat st;
- if (stat (optarg, &st) != 0)
- error (EXIT_FAILURE, errno, _("accessing %s"), quote (optarg));
- if (! S_ISDIR (st.st_mode))
- error (EXIT_FAILURE, 0, _("target %s is not a directory"),
- quote (optarg));
- }
- target_directory = optarg;
- break;
- case 'T':
- no_target_directory = true;
- break;
-
- case PRESERVE_CONTEXT_OPTION:
- if ( ! selinux_enabled)
- {
- error (0, 0, _("WARNING: ignoring --preserve-context; "
- "this kernel is not SELinux-enabled"));
- break;
- }
- x.preserve_security_context = true;
- use_default_selinux_context = false;
- break;
- case 'Z':
- if ( ! selinux_enabled)
- {
- error (0, 0, _("WARNING: ignoring --context (-Z); "
- "this kernel is not SELinux-enabled"));
- break;
- }
- scontext = optarg;
- use_default_selinux_context = false;
- break;
- case_GETOPT_HELP_CHAR;
- case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
- default:
- usage (EXIT_FAILURE);
- }
- }
-
- /* Check for invalid combinations of arguments. */
- if (dir_arg & strip_files)
- error (EXIT_FAILURE, 0,
- _("the strip option may not be used when installing a directory"));
- if (dir_arg && target_directory)
- error (EXIT_FAILURE, 0,
- _("target directory not allowed when installing a directory"));
-
- if (x.preserve_security_context && scontext != NULL)
- error (EXIT_FAILURE, 0,
- _("cannot force target context to %s and preserve it"),
- quote (scontext));
-
- if (backup_suffix_string)
- simple_backup_suffix = xstrdup (backup_suffix_string);
-
- x.backup_type = (make_backups
- ? xget_version (_("backup type"),
- version_control_string)
- : no_backups);
-
- if (scontext && setfscreatecon (scontext) < 0)
- error (EXIT_FAILURE, errno,
- _("failed to set default file creation context to %s"),
- quote (scontext));
-
- n_files = argc - optind;
- file = argv + optind;
-
- if (n_files <= ! (dir_arg || target_directory))
- {
- if (n_files <= 0)
- error (0, 0, _("missing file operand"));
- else
- error (0, 0, _("missing destination file operand after %s"),
- quote (file[0]));
- usage (EXIT_FAILURE);
- }
-
- if (no_target_directory)
- {
- if (target_directory)
- error (EXIT_FAILURE, 0,
- _("cannot combine --target-directory (-t) "
- "and --no-target-directory (-T)"));
- if (2 < n_files)
- {
- error (0, 0, _("extra operand %s"), quote (file[2]));
- usage (EXIT_FAILURE);
- }
- }
- else if (! (dir_arg || target_directory))
- {
- if (2 <= n_files && target_directory_operand (file[n_files - 1]))
- target_directory = file[--n_files];
- else if (2 < n_files)
- error (EXIT_FAILURE, 0, _("target %s is not a directory"),
- quote (file[n_files - 1]));
- }
-
- if (specified_mode)
- {
- struct mode_change *change = mode_compile (specified_mode);
- if (!change)
- error (EXIT_FAILURE, 0, _("invalid mode %s"), quote (specified_mode));
- mode = mode_adjust (0, false, 0, change, NULL);
- dir_mode = mode_adjust (0, true, 0, change, &dir_mode_bits);
- free (change);
- }
-
- if (strip_program_specified && !strip_files)
- error (0, 0, _("WARNING: ignoring --strip-program option as -s option was "
- "not specified"));
-
- get_ids ();
-
- if (dir_arg)
- exit_status = savewd_process_files (n_files, file, process_dir, &x);
- else
- {
- /* FIXME: it's a little gross that this initialization is
- required by copy.c::copy. */
- hash_init ();
-
- if (!target_directory)
- {
- if (! (mkdir_and_install
- ? install_file_in_file_parents (file[0], file[1], &x)
- : install_file_in_file (file[0], file[1], &x)))
- exit_status = EXIT_FAILURE;
- }
- else
- {
- int i;
- dest_info_init (&x);
- for (i = 0; i < n_files; i++)
- if (! install_file_in_dir (file[i], target_directory, &x))
- exit_status = EXIT_FAILURE;
- }
- }
-
- exit (exit_status);
-}
-
-/* Copy file FROM onto file TO, creating any missing parent directories of TO.
- Return true if successful. */
-
-static bool
-install_file_in_file_parents (char const *from, char *to,
- struct cp_options *x)
+/* Report that directory DIR was made, if OPTIONS requests this. */
+static void
+announce_mkdir (char const *dir, void *options)
{
- bool save_working_directory =
- ! (IS_ABSOLUTE_FILE_NAME (from) && IS_ABSOLUTE_FILE_NAME (to));
- int status = EXIT_SUCCESS;
-
- struct savewd wd;
- savewd_init (&wd);
- if (! save_working_directory)
- savewd_finish (&wd);
-
- if (mkancesdirs (to, &wd, make_ancestor, x) == -1)
- {
- error (0, errno, _("cannot create directory %s"), to);
- status = EXIT_FAILURE;
- }
-
- if (save_working_directory)
- {
- int restore_result = savewd_restore (&wd, status);
- int restore_errno = errno;
- savewd_finish (&wd);
- if (EXIT_SUCCESS < restore_result)
- return false;
- if (restore_result < 0 && status == EXIT_SUCCESS)
- {
- error (0, restore_errno, _("cannot create directory %s"), to);
- return false;
- }
- }
-
- return (status == EXIT_SUCCESS && install_file_in_file (from, to, x));
+ struct cp_options const *x = options;
+ if (x->verbose)
+ prog_fprintf (stdout, _("creating directory %s"), quote (dir));
}
-/* Copy file FROM onto file TO and give TO the appropriate
- attributes.
- Return true if successful. */
-
-static bool
-install_file_in_file (const char *from, const char *to,
- const struct cp_options *x)
+/* Make ancestor directory DIR, whose last file name component is
+ COMPONENT, with options OPTIONS. Assume the working directory is
+ COMPONENT's parent. */
+static int
+make_ancestor (char const *dir, char const *component, void *options)
{
- struct stat from_sb;
- if (x->preserve_timestamps && stat (from, &from_sb) != 0)
- {
- error (0, errno, _("cannot stat %s"), quote (from));
- return false;
- }
- if (! copy_file (from, to, x))
- return false;
- if (strip_files)
- strip (to);
- if (x->preserve_timestamps && (strip_files || ! S_ISREG (from_sb.st_mode))
- && ! change_timestamps (&from_sb, to))
- return false;
- return change_attributes (to);
+ int r = mkdir (component, DEFAULT_MODE);
+ if (r == 0)
+ announce_mkdir (dir, options);
+ return r;
}
-/* Copy file FROM into directory TO_DIR, keeping its same name,
- and give the copy the appropriate attributes.
- Return true if successful. */
-
-static bool
-install_file_in_dir (const char *from, const char *to_dir,
- const struct cp_options *x)
+/* Process a command-line file name, for the -d option. */
+static int
+process_dir (char *dir, struct savewd *wd, void *options)
{
- const char *from_base = last_component (from);
- char *to = file_name_concat (to_dir, from_base, NULL);
- bool ret = install_file_in_file (from, to, x);
- free (to);
- return ret;
+ return (make_dir_parents (dir, wd,
+ make_ancestor, options,
+ dir_mode, announce_mkdir,
+ dir_mode_bits, owner_id, group_id, false)
+ ? EXIT_SUCCESS
+ : EXIT_FAILURE);
}
/* Copy file FROM onto file TO, creating TO if necessary.
{
bool copy_into_self;
+ if (copy_only_if_needed && !need_copy (from, to, x))
+ return true;
+
/* 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.
return ok;
}
-/* Set the timestamps of file TO to match those of file FROM.
+/* Set the timestamps of file DEST to match those of SRC_SB.
Return true if successful. */
static bool
-change_timestamps (struct stat const *from_sb, char const *to)
+change_timestamps (struct stat const *src_sb, char const *dest)
{
struct timespec timespec[2];
- timespec[0] = get_stat_atime (from_sb);
- timespec[1] = get_stat_mtime (from_sb);
+ timespec[0] = get_stat_atime (src_sb);
+ timespec[1] = get_stat_mtime (src_sb);
- if (utimens (to, timespec))
+ if (utimens (dest, timespec))
{
- error (0, errno, _("cannot set time stamps for %s"), quote (to));
+ error (0, errno, _("cannot set time stamps for %s"), quote (dest));
return false;
}
return true;
break;
default: /* Parent. */
if (waitpid (pid, &status, 0) < 0)
- error (EXIT_FAILURE, errno, _("waiting for strip"));
+ error (EXIT_FAILURE, errno, _("waiting for strip"));
else if (! WIFEXITED (status) || WEXITSTATUS (status))
- error (EXIT_FAILURE, 0, _("strip process terminated abnormally"));
+ error (EXIT_FAILURE, 0, _("strip process terminated abnormally"));
break;
}
}
{
pw = getpwnam (owner_name);
if (pw == NULL)
- {
- unsigned long int tmp;
- if (xstrtoul (owner_name, NULL, 0, &tmp, NULL) != LONGINT_OK
- || UID_T_MAX < tmp)
- error (EXIT_FAILURE, 0, _("invalid user %s"), quote (owner_name));
- owner_id = tmp;
- }
+ {
+ unsigned long int tmp;
+ if (xstrtoul (owner_name, NULL, 0, &tmp, NULL) != LONGINT_OK
+ || UID_T_MAX < tmp)
+ error (EXIT_FAILURE, 0, _("invalid user %s"), quote (owner_name));
+ owner_id = tmp;
+ }
else
- owner_id = pw->pw_uid;
+ owner_id = pw->pw_uid;
endpwent ();
}
else
{
gr = getgrnam (group_name);
if (gr == NULL)
- {
- unsigned long int tmp;
- if (xstrtoul (group_name, NULL, 0, &tmp, NULL) != LONGINT_OK
- || GID_T_MAX < tmp)
- error (EXIT_FAILURE, 0, _("invalid group %s"), quote (group_name));
- group_id = tmp;
- }
+ {
+ unsigned long int tmp;
+ if (xstrtoul (group_name, NULL, 0, &tmp, NULL) != LONGINT_OK
+ || GID_T_MAX < tmp)
+ error (EXIT_FAILURE, 0, _("invalid group %s"), quote (group_name));
+ group_id = tmp;
+ }
else
- group_id = gr->gr_gid;
+ group_id = gr->gr_gid;
endgrent ();
}
else
group_id = (gid_t) -1;
}
-/* Report that directory DIR was made, if OPTIONS requests this. */
-static void
-announce_mkdir (char const *dir, void *options)
-{
- struct cp_options const *x = options;
- if (x->verbose)
- prog_fprintf (stdout, _("creating directory %s"), quote (dir));
-}
-
-/* Make ancestor directory DIR, whose last file name component is
- COMPONENT, with options OPTIONS. Assume the working directory is
- COMPONENT's parent. */
-static int
-make_ancestor (char const *dir, char const *component, void *options)
-{
- int r = mkdir (component, DEFAULT_MODE);
- if (r == 0)
- announce_mkdir (dir, options);
- return r;
-}
-
void
usage (int status)
{
if (status != EXIT_SUCCESS)
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
+ emit_try_help ();
else
{
printf (_("\
or: %s [OPTION]... -t DIRECTORY SOURCE...\n\
or: %s [OPTION]... -d DIRECTORY...\n\
"),
- program_name, program_name, program_name, program_name);
+ program_name, program_name, program_name, program_name);
fputs (_("\
+\n\
+This install program copies files (often just compiled) into destination\n\
+locations you choose. If you want to download and install a ready-to-use\n\
+package on a GNU/Linux system, you should instead be using a package manager\n\
+like yum(1) or apt-get(1).\n\
+\n\
In the first three forms, copy SOURCE to DEST or multiple SOURCE(s) to\n\
the existing DIRECTORY, while setting permission modes and owner/group.\n\
In the 4th form, create all components of the given DIRECTORY(ies).\n\
--backup[=CONTROL] make a backup of each existing destination file\n\
-b like --backup but does not accept an argument\n\
-c (ignored)\n\
+ -C, --compare compare each pair of source and destination files, and\n\
+ in some cases, do not modify the destination at all\n\
-d, --directory treat all arguments as directory names; create all\n\
components of the specified directories\n\
"), stdout);
"), stdout);
fputs (_("\
--preserve-context preserve SELinux security context\n\
- -Z, --context=CONTEXT set SELinux security context of files and directories\n\
+ -Z, --context=CONTEXT set SELinux security context of files and directories\
+\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
fputs (_("\
\n\
-The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
+The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
The version control method may be selected via the --backup option or through\n\
the VERSION_CONTROL environment variable. Here are the values:\n\
\n\
existing, nil numbered if numbered backups exist, simple otherwise\n\
simple, never always make simple backups\n\
"), stdout);
- emit_bug_reporting_address ();
+ emit_ancillary_info ();
}
exit (status);
}
+
+/* Copy file FROM onto file TO and give TO the appropriate
+ attributes.
+ Return true if successful. */
+
+static bool
+install_file_in_file (const char *from, const char *to,
+ const struct cp_options *x)
+{
+ struct stat from_sb;
+ if (x->preserve_timestamps && stat (from, &from_sb) != 0)
+ {
+ error (0, errno, _("cannot stat %s"), quote (from));
+ return false;
+ }
+ if (! copy_file (from, to, x))
+ return false;
+ if (strip_files)
+ strip (to);
+ if (x->preserve_timestamps && (strip_files || ! S_ISREG (from_sb.st_mode))
+ && ! change_timestamps (&from_sb, to))
+ return false;
+ return change_attributes (to);
+}
+
+/* Copy file FROM onto file TO, creating any missing parent directories of TO.
+ Return true if successful. */
+
+static bool
+install_file_in_file_parents (char const *from, char *to,
+ struct cp_options *x)
+{
+ bool save_working_directory =
+ ! (IS_ABSOLUTE_FILE_NAME (from) && IS_ABSOLUTE_FILE_NAME (to));
+ int status = EXIT_SUCCESS;
+
+ struct savewd wd;
+ savewd_init (&wd);
+ if (! save_working_directory)
+ savewd_finish (&wd);
+
+ if (mkancesdirs (to, &wd, make_ancestor, x) == -1)
+ {
+ error (0, errno, _("cannot create directory %s"), to);
+ status = EXIT_FAILURE;
+ }
+
+ if (save_working_directory)
+ {
+ int restore_result = savewd_restore (&wd, status);
+ int restore_errno = errno;
+ savewd_finish (&wd);
+ if (EXIT_SUCCESS < restore_result)
+ return false;
+ if (restore_result < 0 && status == EXIT_SUCCESS)
+ {
+ error (0, restore_errno, _("cannot create directory %s"), to);
+ return false;
+ }
+ }
+
+ return (status == EXIT_SUCCESS && install_file_in_file (from, to, x));
+}
+
+/* Copy file FROM into directory TO_DIR, keeping its same name,
+ and give the copy the appropriate attributes.
+ Return true if successful. */
+
+static bool
+install_file_in_dir (const char *from, const char *to_dir,
+ const struct cp_options *x)
+{
+ const char *from_base = last_component (from);
+ char *to = file_name_concat (to_dir, from_base, NULL);
+ bool ret = install_file_in_file (from, to, x);
+ free (to);
+ return ret;
+}
+
+int
+main (int argc, char **argv)
+{
+ int optc;
+ int exit_status = EXIT_SUCCESS;
+ const char *specified_mode = NULL;
+ bool make_backups = false;
+ char *backup_suffix_string;
+ char *version_control_string = NULL;
+ bool mkdir_and_install = false;
+ struct cp_options x;
+ char const *target_directory = NULL;
+ bool no_target_directory = false;
+ int n_files;
+ char **file;
+ bool strip_program_specified = false;
+ security_context_t scontext = NULL;
+ /* set iff kernel has extra selinux system calls */
+ selinux_enabled = (0 < is_selinux_enabled ());
+
+ initialize_main (&argc, &argv);
+ set_program_name (argv[0]);
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ atexit (close_stdin);
+
+ cp_option_init (&x);
+
+ owner_name = NULL;
+ group_name = NULL;
+ strip_files = false;
+ dir_arg = false;
+ umask (0);
+
+ /* FIXME: consider not calling getenv for SIMPLE_BACKUP_SUFFIX unless
+ we'll actually use backup_suffix_string. */
+ backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX");
+
+ while ((optc = getopt_long (argc, argv, "bcCsDdg:m:o:pt:TvS:Z:", long_options,
+ NULL)) != -1)
+ {
+ switch (optc)
+ {
+ case 'b':
+ make_backups = true;
+ if (optarg)
+ version_control_string = optarg;
+ break;
+ case 'c':
+ break;
+ case 'C':
+ copy_only_if_needed = true;
+ break;
+ case 's':
+ strip_files = true;
+#ifdef SIGCHLD
+ /* System V fork+wait does not work if SIGCHLD is ignored. */
+ signal (SIGCHLD, SIG_DFL);
+#endif
+ break;
+ case STRIP_PROGRAM_OPTION:
+ strip_program = xstrdup (optarg);
+ strip_program_specified = true;
+ break;
+ case 'd':
+ dir_arg = true;
+ break;
+ case 'D':
+ mkdir_and_install = true;
+ break;
+ case 'v':
+ x.verbose = true;
+ break;
+ case 'g':
+ group_name = optarg;
+ break;
+ case 'm':
+ specified_mode = optarg;
+ break;
+ case 'o':
+ owner_name = optarg;
+ break;
+ case 'p':
+ x.preserve_timestamps = true;
+ break;
+ case 'S':
+ make_backups = true;
+ backup_suffix_string = optarg;
+ break;
+ case 't':
+ if (target_directory)
+ error (EXIT_FAILURE, 0,
+ _("multiple target directories specified"));
+ else
+ {
+ struct stat st;
+ if (stat (optarg, &st) != 0)
+ error (EXIT_FAILURE, errno, _("accessing %s"), quote (optarg));
+ if (! S_ISDIR (st.st_mode))
+ error (EXIT_FAILURE, 0, _("target %s is not a directory"),
+ quote (optarg));
+ }
+ target_directory = optarg;
+ break;
+ case 'T':
+ no_target_directory = true;
+ break;
+
+ case PRESERVE_CONTEXT_OPTION:
+ if ( ! selinux_enabled)
+ {
+ error (0, 0, _("WARNING: ignoring --preserve-context; "
+ "this kernel is not SELinux-enabled"));
+ break;
+ }
+ x.preserve_security_context = true;
+ use_default_selinux_context = false;
+ break;
+ case 'Z':
+ if ( ! selinux_enabled)
+ {
+ error (0, 0, _("WARNING: ignoring --context (-Z); "
+ "this kernel is not SELinux-enabled"));
+ break;
+ }
+ scontext = optarg;
+ use_default_selinux_context = false;
+ break;
+ case_GETOPT_HELP_CHAR;
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+ default:
+ usage (EXIT_FAILURE);
+ }
+ }
+
+ /* Check for invalid combinations of arguments. */
+ if (dir_arg && strip_files)
+ error (EXIT_FAILURE, 0,
+ _("the strip option may not be used when installing a directory"));
+ if (dir_arg && target_directory)
+ error (EXIT_FAILURE, 0,
+ _("target directory not allowed when installing a directory"));
+
+ if (x.preserve_security_context && scontext != NULL)
+ error (EXIT_FAILURE, 0,
+ _("cannot force target context to %s and preserve it"),
+ quote (scontext));
+
+ if (backup_suffix_string)
+ simple_backup_suffix = xstrdup (backup_suffix_string);
+
+ x.backup_type = (make_backups
+ ? xget_version (_("backup type"),
+ version_control_string)
+ : no_backups);
+
+ if (scontext && setfscreatecon (scontext) < 0)
+ error (EXIT_FAILURE, errno,
+ _("failed to set default file creation context to %s"),
+ quote (scontext));
+
+ n_files = argc - optind;
+ file = argv + optind;
+
+ if (n_files <= ! (dir_arg || target_directory))
+ {
+ if (n_files <= 0)
+ error (0, 0, _("missing file operand"));
+ else
+ error (0, 0, _("missing destination file operand after %s"),
+ quote (file[0]));
+ usage (EXIT_FAILURE);
+ }
+
+ if (no_target_directory)
+ {
+ if (target_directory)
+ error (EXIT_FAILURE, 0,
+ _("cannot combine --target-directory (-t) "
+ "and --no-target-directory (-T)"));
+ if (2 < n_files)
+ {
+ error (0, 0, _("extra operand %s"), quote (file[2]));
+ usage (EXIT_FAILURE);
+ }
+ }
+ else if (! (dir_arg || target_directory))
+ {
+ if (2 <= n_files && target_directory_operand (file[n_files - 1]))
+ target_directory = file[--n_files];
+ else if (2 < n_files)
+ error (EXIT_FAILURE, 0, _("target %s is not a directory"),
+ quote (file[n_files - 1]));
+ }
+
+ if (specified_mode)
+ {
+ struct mode_change *change = mode_compile (specified_mode);
+ if (!change)
+ error (EXIT_FAILURE, 0, _("invalid mode %s"), quote (specified_mode));
+ mode = mode_adjust (0, false, 0, change, NULL);
+ dir_mode = mode_adjust (0, true, 0, change, &dir_mode_bits);
+ free (change);
+ }
+
+ if (strip_program_specified && !strip_files)
+ error (0, 0, _("WARNING: ignoring --strip-program option as -s option was "
+ "not specified"));
+
+ if (copy_only_if_needed && x.preserve_timestamps)
+ {
+ error (0, 0, _("options --compare (-C) and --preserve-timestamps are "
+ "mutually exclusive"));
+ usage (EXIT_FAILURE);
+ }
+
+ if (copy_only_if_needed && strip_files)
+ {
+ error (0, 0, _("options --compare (-C) and --strip are mutually "
+ "exclusive"));
+ usage (EXIT_FAILURE);
+ }
+
+ if (copy_only_if_needed && extra_mode (mode))
+ error (0, 0, _("the --compare (-C) option is ignored when you"
+ " specify a mode with non-permission bits"));
+
+ get_ids ();
+
+ if (dir_arg)
+ exit_status = savewd_process_files (n_files, file, process_dir, &x);
+ else
+ {
+ /* FIXME: it's a little gross that this initialization is
+ required by copy.c::copy. */
+ hash_init ();
+
+ if (!target_directory)
+ {
+ if (! (mkdir_and_install
+ ? install_file_in_file_parents (file[0], file[1], &x)
+ : install_file_in_file (file[0], file[1], &x)))
+ exit_status = EXIT_FAILURE;
+ }
+ else
+ {
+ int i;
+ dest_info_init (&x);
+ for (i = 0; i < n_files; i++)
+ if (! install_file_in_dir (file[i], target_directory, &x))
+ exit_status = EXIT_FAILURE;
+ }
+ }
+
+ exit (exit_status);
+}
projects / platform / upstream / coreutils.git / blobdiff