/* mknod -- make special files
- Copyright (C) 90, 91, 1995-2005 Free Software Foundation, Inc.
+ Copyright (C) 1990-2013 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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.
+ the Free Software Foundation, either version 3 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
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by David MacKenzie <djm@ai.mit.edu> */
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
+#include <selinux/selinux.h>
#include "system.h"
-#include "chmod-safer.h"
#include "error.h"
#include "modechange.h"
#include "quote.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 "mknod"
-#define AUTHORS "David MacKenzie"
-
-/* The name this program was run with. */
-char *program_name;
+#define AUTHORS proper_name ("David MacKenzie")
static struct option const longopts[] =
{
+ {GETOPT_SELINUX_CONTEXT_OPTION_DECL},
{"mode", required_argument, NULL, 'm'},
{GETOPT_HELP_OPTION_DECL},
{GETOPT_VERSION_OPTION_DECL},
usage (int status)
{
if (status != EXIT_SUCCESS)
- fprintf (stderr, _("Try `%s --help' for more information.\n"),
- program_name);
+ emit_try_help ();
else
{
printf (_("Usage: %s [OPTION]... NAME TYPE [MAJOR MINOR]\n"),
- program_name);
+ program_name);
fputs (_("\
Create the special file NAME of the given TYPE.\n\
\n\
Mandatory arguments to long options are mandatory for short options too.\n\
"), stdout);
fputs (_("\
- -m, --mode=MODE set permission mode (as in chmod), not a=rw - umask\n\
+ -m, --mode=MODE set file permission bits to MODE, not a=rw - umask\n\
+"), stdout);
+ fputs (_("\
+ -Z, --context=CTX set the SELinux security context of NAME to CTX\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
c, u create a character (unbuffered) special file\n\
p create a FIFO\n\
"), stdout);
- printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+ printf (USAGE_BUILTIN_WARNING, PROGRAM_NAME);
+ emit_ancillary_info ();
}
exit (status);
}
main (int argc, char **argv)
{
mode_t newmode;
- mode_t tmp_mode;
- const char *specified_mode;
+ char const *specified_mode = NULL;
int optc;
int expected_operands;
- mode_t node_type IF_LINT (= 0);
- dev_t device = 0;
+ mode_t node_type;
+ security_context_t scontext = NULL;
initialize_main (&argc, &argv);
- program_name = argv[0];
+ set_program_name (argv[0]);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
- specified_mode = NULL;
-
- while ((optc = getopt_long (argc, argv, "m:", longopts, NULL)) != -1)
+ while ((optc = getopt_long (argc, argv, "m:Z:", longopts, NULL)) != -1)
{
switch (optc)
- {
- case 'm':
- specified_mode = optarg;
- break;
- case_GETOPT_HELP_CHAR;
- case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
- default:
- usage (EXIT_FAILURE);
- }
+ {
+ case 'm':
+ specified_mode = optarg;
+ break;
+ case 'Z':
+ scontext = optarg;
+ break;
+ case_GETOPT_HELP_CHAR;
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+ default:
+ usage (EXIT_FAILURE);
+ }
}
- newmode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+ newmode = MODE_RW_UGO;
if (specified_mode)
{
struct mode_change *change = mode_compile (specified_mode);
if (!change)
- error (EXIT_FAILURE, 0, _("invalid mode"));
- newmode = mode_adjust (newmode, change, umask (0));
+ error (EXIT_FAILURE, 0, _("invalid mode"));
+ newmode = mode_adjust (newmode, false, umask (0), change, NULL);
free (change);
+ if (newmode & ~S_IRWXUGO)
+ error (EXIT_FAILURE, 0,
+ _("mode must specify only file permission bits"));
}
- /* This is the mode we'll use in the mknod or mkfifo call.
- If it doesn't include S_IRUSR, use S_IRUSR so the final
- open-for-fchmod will succeed. */
- tmp_mode = (newmode & S_IRUSR) ? newmode : S_IRUSR;
-
/* If the number of arguments is 0 or 1,
- or (if it's 2 or more and the second one starts with `p'), then there
+ or (if it's 2 or more and the second one starts with 'p'), then there
must be exactly two operands. Otherwise, there must be four. */
expected_operands = (argc <= optind
- || (optind + 1 < argc && argv[optind + 1][0] == 'p')
- ? 2 : 4);
+ || (optind + 1 < argc && argv[optind + 1][0] == 'p')
+ ? 2 : 4);
if (argc - optind < expected_operands)
{
if (argc <= optind)
- error (0, 0, _("missing operand"));
+ error (0, 0, _("missing operand"));
else
- error (0, 0, _("missing operand after %s"), quote (argv[argc - 1]));
+ error (0, 0, _("missing operand after %s"), quote (argv[argc - 1]));
if (expected_operands == 4 && argc - optind == 2)
- fprintf (stderr, "%s\n",
- _("Special files require major and minor device numbers."));
+ fprintf (stderr, "%s\n",
+ _("Special files require major and minor device numbers."));
usage (EXIT_FAILURE);
}
if (expected_operands < argc - optind)
{
error (0, 0, _("extra operand %s"),
- quote (argv[optind + expected_operands]));
+ quote (argv[optind + expected_operands]));
if (expected_operands == 2 && argc - optind == 4)
- fprintf (stderr, "%s\n",
- _("Fifos do not have major and minor device numbers."));
+ fprintf (stderr, "%s\n",
+ _("Fifos do not have major and minor device numbers."));
usage (EXIT_FAILURE);
}
+ if (scontext && setfscreatecon (scontext) < 0)
+ error (EXIT_FAILURE, errno,
+ _("failed to set default file creation context to %s"),
+ quote (scontext));
+
/* Only check the first character, to allow mnemonic usage like
- `mknod /dev/rst0 character 18 0'. */
+ 'mknod /dev/rst0 character 18 0'. */
switch (argv[optind + 1][0])
{
- case 'b': /* `block' or `buffered' */
+ case 'b': /* 'block' or 'buffered' */
#ifndef S_IFBLK
error (EXIT_FAILURE, 0, _("block special files not supported"));
#else
#endif
goto block_or_character;
- case 'c': /* `character' */
- case 'u': /* `unbuffered' */
+ case 'c': /* 'character' */
+ case 'u': /* 'unbuffered' */
#ifndef S_IFCHR
error (EXIT_FAILURE, 0, _("character special files not supported"));
#else
block_or_character:
{
- char const *s_major = argv[optind + 2];
- char const *s_minor = argv[optind + 3];
- uintmax_t i_major, i_minor;
-
- if (xstrtoumax (s_major, NULL, 0, &i_major, NULL) != LONGINT_OK
- || i_major != (major_t) i_major)
- error (EXIT_FAILURE, 0,
- _("invalid major device number %s"), quote (s_major));
-
- if (xstrtoumax (s_minor, NULL, 0, &i_minor, NULL) != LONGINT_OK
- || i_minor != (minor_t) i_minor)
- error (EXIT_FAILURE, 0,
- _("invalid minor device number %s"), quote (s_minor));
-
- device = makedev (i_major, i_minor);
+ char const *s_major = argv[optind + 2];
+ char const *s_minor = argv[optind + 3];
+ uintmax_t i_major, i_minor;
+ dev_t device;
+
+ if (xstrtoumax (s_major, NULL, 0, &i_major, NULL) != LONGINT_OK
+ || i_major != (major_t) i_major)
+ error (EXIT_FAILURE, 0,
+ _("invalid major device number %s"), quote (s_major));
+
+ if (xstrtoumax (s_minor, NULL, 0, &i_minor, NULL) != LONGINT_OK
+ || i_minor != (minor_t) i_minor)
+ error (EXIT_FAILURE, 0,
+ _("invalid minor device number %s"), quote (s_minor));
+
+ device = makedev (i_major, i_minor);
#ifdef NODEV
- if (device == NODEV)
- error (EXIT_FAILURE, 0, _("invalid device %s %s"), s_major, s_minor);
+ if (device == NODEV)
+ error (EXIT_FAILURE, 0, _("invalid device %s %s"), s_major, s_minor);
#endif
- if (mknod (argv[optind], tmp_mode | node_type, device) != 0)
- error (EXIT_FAILURE, errno, "%s", quote (argv[optind]));
+ if (mknod (argv[optind], newmode | node_type, device) != 0)
+ error (EXIT_FAILURE, errno, "%s", quote (argv[optind]));
}
break;
- case 'p': /* `pipe' */
-#ifndef S_ISFIFO
- error (EXIT_FAILURE, 0, _("fifo files not supported"));
-#else
- node_type = S_IFIFO;
- if (mkfifo (argv[optind], tmp_mode))
- error (EXIT_FAILURE, errno, "%s", quote (argv[optind]));
-#endif
+ case 'p': /* 'pipe' */
+ if (mkfifo (argv[optind], newmode) != 0)
+ error (EXIT_FAILURE, errno, "%s", quote (argv[optind]));
break;
default:
usage (EXIT_FAILURE);
}
- /* Perform an explicit chmod to ensure the file mode permission bits
- are set as specified. This extra step is necessary in some cases
- when the containing directory has a default ACL. */
-
- if (specified_mode)
- {
- if (chmod_safer (argv[optind], newmode, device, node_type) != 0)
- error (EXIT_FAILURE, errno, _("cannot set permissions of %s"),
- quote (argv[optind]));
- }
-
exit (EXIT_SUCCESS);
}
projects / platform / upstream / coreutils.git / blobdiff