Adding upstream version 8.32.upstream/8.32upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 182 insertions, 0 deletions

diff --git a/src/mkfifo.c b/src/mkfifo.c
new file mode 100644
index 0000000..9ec4214
--- /dev/null
+++ b/src/mkfifo.c
@@ -0,0 +1,182 @@
+/* mkfifo -- make fifo's (named pipes)
+   Copyright (C) 1990-2020 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 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
+   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, see <https://www.gnu.org/licenses/>.  */
+
+/* David MacKenzie <djm@ai.mit.edu>  */
+
+#include <config.h>
+#include <stdio.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <selinux/selinux.h>
+
+#include "system.h"
+#include "die.h"
+#include "error.h"
+#include "modechange.h"
+#include "quote.h"
+#include "selinux.h"
+#include "smack.h"
+
+/* The official name of this program (e.g., no 'g' prefix).  */
+#define PROGRAM_NAME "mkfifo"
+
+#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},
+  {NULL, 0, NULL, 0}
+};
+
+void
+usage (int status)
+{
+  if (status != EXIT_SUCCESS)
+    emit_try_help ();
+  else
+    {
+      printf (_("Usage: %s [OPTION]... NAME...\n"), program_name);
+      fputs (_("\
+Create named pipes (FIFOs) with the given NAMEs.\n\
+"), stdout);
+
+      emit_mandatory_arg_note ();
+
+      fputs (_("\
+  -m, --mode=MODE    set file permission bits to MODE, not a=rw - umask\n\
+"), stdout);
+      fputs (_("\
+  -Z                   set the SELinux security context to default type\n\
+      --context[=CTX]  like -Z, or if CTX is specified then set the SELinux\n\
+                         or SMACK security context to CTX\n\
+"), stdout);
+      fputs (HELP_OPTION_DESCRIPTION, stdout);
+      fputs (VERSION_OPTION_DESCRIPTION, stdout);
+      emit_ancillary_info (PROGRAM_NAME);
+    }
+  exit (status);
+}
+
+int
+main (int argc, char **argv)
+{
+  mode_t newmode;
+  char const *specified_mode = NULL;
+  int exit_status = EXIT_SUCCESS;
+  int optc;
+  char const *scontext = NULL;
+  bool set_security_context = false;
+
+  initialize_main (&argc, &argv);
+  set_program_name (argv[0]);
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+
+  atexit (close_stdout);
+
+  while ((optc = getopt_long (argc, argv, "m:Z", longopts, NULL)) != -1)
+    {
+      switch (optc)
+        {
+        case 'm':
+          specified_mode = optarg;
+          break;
+        case 'Z':
+          if (is_smack_enabled ())
+            {
+              /* We don't yet support -Z to restore context with SMACK.  */
+              scontext = optarg;
+            }
+          else if (is_selinux_enabled () > 0)
+            {
+              if (optarg)
+                scontext = optarg;
+              else
+                set_security_context = true;
+            }
+          else if (optarg)
+            {
+              error (0, 0,
+                     _("warning: ignoring --context; "
+                       "it requires an SELinux/SMACK-enabled kernel"));
+            }
+          break;
+        case_GETOPT_HELP_CHAR;
+        case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+        default:
+          usage (EXIT_FAILURE);
+        }
+    }
+
+  if (optind == argc)
+    {
+      error (0, 0, _("missing operand"));
+      usage (EXIT_FAILURE);
+    }
+
+  if (scontext)
+    {
+      int ret = 0;
+      if (is_smack_enabled ())
+        ret = smack_set_label_for_self (scontext);
+      else
+        ret = setfscreatecon (se_const (scontext));
+
+      if (ret < 0)
+        die (EXIT_FAILURE, errno,
+             _("failed to set default file creation context to %s"),
+             quote (scontext));
+    }
+
+  newmode = MODE_RW_UGO;
+  if (specified_mode)
+    {
+      mode_t umask_value;
+      struct mode_change *change = mode_compile (specified_mode);
+      if (!change)
+        die (EXIT_FAILURE, 0, _("invalid mode"));
+      umask_value = umask (0);
+      umask (umask_value);
+      newmode = mode_adjust (newmode, false, umask_value, change, NULL);
+      free (change);
+      if (newmode & ~S_IRWXUGO)
+        die (EXIT_FAILURE, 0,
+             _("mode must specify only file permission bits"));
+    }
+
+  for (; optind < argc; ++optind)
+    {
+      if (set_security_context)
+        defaultcon (argv[optind], S_IFIFO);
+      if (mkfifo (argv[optind], newmode) != 0)
+        {
+          error (0, errno, _("cannot create fifo %s"), quoteaf (argv[optind]));
+          exit_status = EXIT_FAILURE;
+        }
+      else if (specified_mode && lchmod (argv[optind], newmode) != 0)
+        {
+          error (0, errno, _("cannot set permissions of %s"),
+                 quoteaf (argv[optind]));
+          exit_status = EXIT_FAILURE;
+        }
+    }
+
+  return exit_status;
+}