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/* 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 FILE is a symbolic link, follow it\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 "LR?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_NOLINK), 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);
}
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