#include <signal.h>
#include <pwd.h>
#include <grp.h>
+#include <selinux/selinux.h>
#include "system.h"
#include "backupfile.h"
#include "mkdir-p.h"
#include "modechange.h"
#include "quote.h"
+#include "quotearg.h"
#include "savewd.h"
#include "stat-time.h"
#include "utimens.h"
# include <sys/wait.h>
#endif
+static int selinux_enabled = 0;
+static bool use_default_selinux_context = true;
+
#if ! HAVE_ENDGRENT
# define endgrent() ((void) 0)
#endif
/* If true, install a directory instead of a regular file. */
static bool dir_arg;
+/* For long options that have no equivalent short option, use a
+ non-character as a pseudo short option, starting with CHAR_MAX + 1. */
+enum
+{
+ PRESERVE_CONTEXT_OPTION = CHAR_MAX + 1
+};
+
static struct option const long_options[] =
{
{"backup", optional_argument, NULL, 'b'},
+ {GETOPT_SELINUX_CONTEXT_OPTION_DECL},
{"directory", no_argument, NULL, 'd'},
{"group", required_argument, NULL, 'g'},
{"mode", required_argument, NULL, 'm'},
{"no-target-directory", no_argument, NULL, 'T'},
{"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'},
{"suffix", required_argument, NULL, 'S'},
{"target-directory", required_argument, NULL, 't'},
x->preserve_mode = false;
x->preserve_timestamps = false;
x->require_preserve = false;
+ x->require_preserve_context = false;
x->recursive = false;
x->sparse_mode = SPARSE_AUTO;
x->symbolic_link = false;
x->stdin_tty = false;
x->update = false;
+ x->preserve_security_context = false;
x->verbose = false;
x->dest_info = NULL;
x->src_info = NULL;
}
+/* Modify file context to match the specified policy.
+ If an error occurs the file will remain with the default directory
+ context. */
+static void
+setdefaultfilecon (char const *file)
+{
+ struct stat st;
+ security_context_t scontext = NULL;
+ if (selinux_enabled != 1)
+ {
+ /* Indicate no context found. */
+ return;
+ }
+ if (lstat (file, &st) != 0)
+ return;
+
+ /* 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) ||
+ (strcmp (scontext, "<<none>>") == 0))
+ {
+ if (scontext != NULL)
+ 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);
+
+ freecon (scontext);
+ return;
+}
+
/* FILE is the last operand of this command. Return true if FILE is a
directory. But report an error there is a problem accessing FILE,
or if FILE does not exist but would have to refer to an existing
bool no_target_directory = false;
int n_files;
char **file;
+ security_context_t scontext = NULL;
+ /* set iff kernel has extra selinux system calls */
+ selinux_enabled = (0 < is_selinux_enabled ());
initialize_main (&argc, &argv);
program_name = argv[0];
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:", long_options,
+ while ((optc = getopt_long (argc, argv, "bcsDdg:m:o:pt:TvS:Z:", long_options,
NULL)) != -1)
{
switch (optc)
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:
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);
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;
static bool
change_attributes (char const *name)
{
+ bool ok = false;
/* chown must precede chmod because on some systems,
chown clears the set[ug]id bits for non-superusers,
resulting in incorrect permissions.
else if (chmod (name, mode) != 0)
error (0, errno, _("cannot change permissions of %s"), quote (name));
else
- return true;
+ ok = true;
+
+ if (use_default_selinux_context)
+ setdefaultfilecon (name);
- return false;
+ return ok;
}
/* Set the timestamps of file TO to match those of file FROM.
-T, --no-target-directory treat DEST as a normal file\n\
-v, --verbose print the name of each directory as it is created\n\
"), stdout);
+ fputs (_("\
+ --preserve-context preserve SELinux security context\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 (_("\
projects / platform / upstream / coreutils.git / blobdiff