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authorMiles Bader <miles@gnu.org>1995-05-16 00:33:04 +0000
committerMiles Bader <miles@gnu.org>1995-05-16 00:33:04 +0000
commit44b04acdaf26373492901119c46936f5a5fac2db (patch)
tree932b2fb850f3eae19c31c417f10740f9b2b27d74 /utils
parent649064183123b070305901b480066afdad4786c1 (diff)
Initial revision
Diffstat (limited to 'utils')
-rw-r--r--utils/fsysopts.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/utils/fsysopts.c b/utils/fsysopts.c
new file mode 100644
index 00000000..cf85e52a
--- /dev/null
+++ b/utils/fsysopts.c
@@ -0,0 +1,124 @@
+/* Set options in a running filesystem
+
+ Copyright (C) 1995 Free Software Foundation, Inc.
+
+ Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+ 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. */
+
+#include <hurd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <error.h>
+#include <argz.h>
+
+#include <hurd/fsys.h>
+
+/* ---------------------------------------------------------------- */
+
+#define USAGE "Usage: %s [OPTION...] FILE OPTIONS...\n"
+
+static void
+usage(status)
+ int status;
+{
+ if (status != 0)
+ fprintf(stderr, "Try `%s --help' for more information.\n",
+ program_invocation_name);
+ else
+ {
+ printf(USAGE, program_invocation_name);
+ printf("\
+\n\
+ -L, --dereference if a translator exists, put the new one on top\n\
+ -R, --recursive pass these options to any child translators\n\
+ --help give this help list\n\
+ --version print version number of program\n\
+");
+ }
+
+ exit(status);
+}
+
+#define SHORT_OPTIONS "L?V"
+
+static struct option options[] =
+{
+ {"dereference", no_argument, 0, 'L'},
+ {"recursive", no_argument, 0, 'R'},
+ {"help", no_argument, 0, '?'},
+ {"version", no_argument, 0, 'V'},
+ {0, 0, 0, 0}
+};
+
+/* ---------------------------------------------------------------- */
+
+void
+main(int argc, char *argv[])
+{
+ int opt;
+ error_t err;
+
+ /* The filesystem we're passing options to. */
+ fsys_t fsys;
+
+ /* The file we use as a handle to get FSYS. */
+ char *node_name = 0;
+ file_t node;
+
+ /* The filesystem options vector, in '\0' separated format. */
+ char *argz = 0;
+ int argz_len = 0;
+
+ int deref = 0, recursive = 0;
+
+ /* Parse our options... */
+ while ((opt = getopt_long(argc, argv, "-" SHORT_OPTIONS, options, 0)) != EOF)
+ switch (opt)
+ {
+ case 1:
+ node_name = optarg;
+ err = argz_create(argv + optind, &argz, &argz_len);
+ if (err)
+ error(3, err, "Can't create options vector");
+ optind = argc; /* stop parsing */
+ break;
+ case 'R': recursive = 1; break;
+ case 'L': deref = 1; break;
+ case 'V': printf ("%s 0.0\n", program_invocation_short_name); exit (0);
+ case '?': usage(0);
+ default: usage(-1);
+ }
+
+ node = file_name_lookup(node_name, (deref ? 0 : O_NOTRANS), 0666);
+ if (node == MACH_PORT_NULL)
+ error(1, errno, "%s", node_name);
+
+ /* Get the filesystem for NODE. */
+ err = file_getcontrol (node, &fsys);
+ if (err)
+ error (2, err, "%s", node_name);
+
+ err = fsys_set_options (fsys, argz, argz_len, recursive);
+ if (err)
+ error(5, err, "%s", node_name);
+
+ exit(0);
+}