150 lines
4.6 KiB
C
150 lines
4.6 KiB
C
/* $NetBSD: refuse_lowlevel.c,v 1.4 2022/01/22 08:09:39 pho Exp $ */
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/*
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* Copyright (c) 2016 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if !defined(lint)
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__RCSID("$NetBSD: refuse_lowlevel.c,v 1.4 2022/01/22 08:09:39 pho Exp $");
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#endif /* !lint */
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#include <fuse_internal.h>
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#include <fuse_opt.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define REFUSE_LOWLEVEL_OPT(t, p, v) \
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{ t, offsetof(struct fuse_cmdline_opts, p), v }
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static struct fuse_opt fuse_lowlevel_opts[] = {
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REFUSE_LOWLEVEL_OPT("-h" , show_help , REFUSE_SHOW_HELP_FULL),
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REFUSE_LOWLEVEL_OPT("--help" , show_help , REFUSE_SHOW_HELP_FULL),
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REFUSE_LOWLEVEL_OPT("-ho" , show_help , REFUSE_SHOW_HELP_NO_HEADER),
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REFUSE_LOWLEVEL_OPT("-V" , show_version , 1),
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REFUSE_LOWLEVEL_OPT("--version", show_version , 1),
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REFUSE_LOWLEVEL_OPT("-d" , debug , 1),
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REFUSE_LOWLEVEL_OPT("debug" , debug , 1),
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REFUSE_LOWLEVEL_OPT("-d" , foreground , 1),
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REFUSE_LOWLEVEL_OPT("debug" , foreground , 1),
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REFUSE_LOWLEVEL_OPT("-f" , foreground , 1),
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REFUSE_LOWLEVEL_OPT("-s" , singlethread , 1),
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REFUSE_LOWLEVEL_OPT("fsname=" , nodefault_fsname, 1),
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FUSE_OPT_KEY ("fsname=" , FUSE_OPT_KEY_KEEP ),
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FUSE_OPT_END
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};
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void fuse_lowlevel_version(void)
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{
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/* XXX: Print something */
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}
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void fuse_cmdline_help(void)
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{
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printf("refuse options:\n"
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" -d, -o debug enable debug output, implies -f\n"
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" -f foreground mode\n"
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" -s single threaded mode (always enabled for now)\n"
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" -o fsname=NAME explicitly set the name of the file system\n");
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}
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static int refuse_lowlevel_opt_proc(void* data, const char *arg, int key,
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struct fuse_args *outargs)
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{
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struct fuse_cmdline_opts *opts = data;
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switch (key) {
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case FUSE_OPT_KEY_NONOPT:
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if (opts->mountpoint == NULL) {
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return fuse_opt_add_opt(&opts->mountpoint, arg);
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}
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else {
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(void)fprintf(stderr, "fuse: invalid argument: %s\n", arg);
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return -1;
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}
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default:
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return 1; /* keep the argument */
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}
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}
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static int add_default_fsname(struct fuse_args *args)
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{
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const char *arg0 = args->argv[0];
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const char *slash;
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if (arg0 == NULL || arg0[0] == '\0') {
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return fuse_opt_add_arg(args, "-ofsname=refuse");
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} else {
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char *arg;
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int rv;
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if ((slash = strrchr(arg0, '/')) == NULL) {
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slash = arg0;
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} else {
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slash += 1;
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}
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if (asprintf(&arg, "-ofsname=refuse:%s", slash) == -1)
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return -1;
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rv = fuse_opt_add_arg(args, arg);
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free(arg);
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return rv;
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}
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}
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int
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__fuse_parse_cmdline(struct fuse_args *args, struct fuse_cmdline_opts *opts)
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{
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memset(opts, 0, sizeof(*opts));
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/*
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* XXX: The single threaded mode is always enabled and cannot be
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* disabled. This is because puffs currently does not support
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* multithreaded operation.
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*/
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opts->singlethread = 1;
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if (fuse_opt_parse(args, opts, fuse_lowlevel_opts,
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refuse_lowlevel_opt_proc) == -1)
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return -1;
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if (!opts->nodefault_fsname) {
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/* -o fsname=%s is not specified so add a default fsname
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* generated from the program basename.
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*/
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if (add_default_fsname(args) == -1)
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return -1;
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}
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return 0;
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}
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