Initial revision

1 files changed, 143 insertions, 0 deletions

diff --git a/src/mknod.c b/src/mknod.c
new file mode 100644
index 000000000..1c582935d
--- /dev/null
+++ b/src/mknod.c
@@ -0,0 +1,143 @@
+/* mknod -- make special files
+   Copyright (C) 1990, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Usage: mknod [-m mode] [--mode=mode] path {bcu} major minor
+		make a block or character device node
+          mknod [-m mode] [--mode=mode] path p
+		make a FIFO (named pipe)
+
+   Options:
+   -m, --mode=mode	Set the mode of created nodes to MODE, which is
+			symbolic as in chmod and uses the umask as a point of
+			departure.
+
+   David MacKenzie <djm@ai.mit.edu>  */
+
+#include <stdio.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include "system.h"
+#include "modechange.h"
+
+void error ();
+void usage ();
+
+/* The name this program was run with. */
+char *program_name;
+
+struct option longopts[] =
+{
+  {"mode", 1, NULL, 'm'},
+  {NULL, 0, NULL, 0}
+};
+
+void
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  unsigned short newmode;
+  struct mode_change *change;
+  char *symbolic_mode;
+  int optc;
+
+  program_name = argv[0];
+  symbolic_mode = NULL;
+
+  while ((optc = getopt_long (argc, argv, "m:", longopts, (int *) 0)) != EOF)
+    {
+      switch (optc)
+	{
+	case 'm':
+	  symbolic_mode = optarg;
+	  break;
+	default:
+	  usage ();
+	}
+    }
+
+  newmode = 0666 & ~umask (0);
+  if (symbolic_mode)
+    {
+      change = mode_compile (symbolic_mode, 0);
+      if (change == MODE_INVALID)
+	error (1, 0, "invalid mode");
+      else if (change == MODE_MEMORY_EXHAUSTED)
+	error (1, 0, "virtual memory exhausted");
+      newmode = mode_adjust (newmode, change);
+    }
+
+  if (argc - optind != 2 && argc - optind != 4)
+    usage ();
+
+  /* Only check the first character, to allow mnemonic usage like
+     `mknod /dev/rst0 character 18 0'. */
+
+  switch (argv[optind + 1][0])
+    {
+    case 'b':			/* `block' or `buffered' */
+#ifndef S_IFBLK
+      error (4, 0, "block special files not supported");
+#else
+      if (argc - optind != 4)
+	usage ();
+      if (mknod (argv[optind], newmode | S_IFBLK,
+		 makedev (atoi (argv[optind + 2]), atoi (argv[optind + 3]))))
+	error (1, errno, "%s", argv[optind]);
+#endif
+      break;
+
+    case 'c':			/* `character' */
+    case 'u':			/* `unbuffered' */
+#ifndef S_IFCHR
+      error (4, 0, "character special files not supported");
+#else
+      if (argc - optind != 4)
+	usage ();
+      if (mknod (argv[optind], newmode | S_IFCHR,
+		 makedev (atoi (argv[optind + 2]), atoi (argv[optind + 3]))))
+	error (1, errno, "%s", argv[optind]);
+#endif
+      break;
+
+    case 'p':			/* `pipe' */
+#ifndef S_ISFIFO
+      error (4, 0, "fifo files not supported");
+#else
+      if (argc - optind != 2)
+	usage ();
+      if (mkfifo (argv[optind], newmode))
+	error (1, errno, "%s", argv[optind]);
+#endif
+      break;
+
+    default:
+      usage ();
+    }
+
+  exit (0);
+}
+
+void
+usage ()
+{
+  fprintf (stderr, "\
+Usage: %s [-m mode] [--mode=mode] path {bcu} major minor\n\
+       %s [-m mode] [--mode=mode] path p\n",
+	   program_name, program_name);
+  exit (1);
+}