156 lines
4.1 KiB
C
156 lines
4.1 KiB
C
/* $NetBSD: rump_syspuffs.c,v 1.13 2019/02/01 09:06:07 mrg Exp $ */
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/*
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* Copyright (c) 2008 Antti Kantee. All Rights Reserved.
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*
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* Development of this software was supported by the
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* Research Foundation of Helsinki University of Technology
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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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*
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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 ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <sys/socket.h>
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#include <sys/syslimits.h>
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#include <assert.h>
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#include <err.h>
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#include <paths.h>
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#include <puffs.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <rump/rump.h>
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#include "rump_syspuffs.h"
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#ifndef MOUNT_NOMAIN
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#include <rump/p2k.h>
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int
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main(int argc, char *argv[])
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{
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char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
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struct syspuffs_args args;
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int mntflags, rv;
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#if 0
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extern int rumpns_puffsdebug;
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extern int rumpns_putterdebug;
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rumpns_puffsdebug = rumpns_putterdebug = 1;
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#endif
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setprogname(argv[0]);
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mount_syspuffs_parseargs(argc, argv, &args, &mntflags,
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canon_dev, canon_dir);
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rv = p2k_run_fs(MOUNT_PUFFS, canon_dev, canon_dir, mntflags,
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&args.us_kargs, sizeof(args.us_kargs), args.us_pflags);
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if (rv)
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err(1, "mount");
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return 0;
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}
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#endif /* MOUNT_NOMAIN */
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__dead static void
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usage(void)
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{
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errx(1, "%s: server server_parameters", getprogname());
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}
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void
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mount_syspuffs_parseargs(int argc, char *argv[],
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struct syspuffs_args *args, int *mntflags,
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char *canon_dev, char *canon_dir)
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{
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struct puffs_kargs *kargs = &args->us_kargs;
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int *pflags = &args->us_pflags;
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char comfd[16];
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int sv[2];
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size_t len;
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int rv;
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if (argc < 2)
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usage();
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/* Create sucketpair for communication with the real file server */
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if (socketpair(PF_LOCAL, SOCK_STREAM, 0, sv) == -1)
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err(1, "socketpair");
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if ((rv = rump_init()) == -1)
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err(1, "rump_init");
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switch (fork()) {
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case 0:
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close(sv[1]);
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snprintf(comfd, sizeof(sv[0]), "%d", sv[0]);
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if (setenv("PUFFS_COMFD", comfd, 1) == -1)
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err(1, "setenv");
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argv++;
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(void)execvp(argv[0], argv);
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err(1, "execvp");
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/*NOTREACHED*/
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case -1:
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err(1, "fork");
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/*NOTREACHED*/
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default:
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close(sv[0]);
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break;
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}
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/* read args */
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if (read(sv[1], &len, sizeof(len)) != sizeof(len))
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err(1, "mp 1");
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if (len > MAXPATHLEN)
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err(1, "mntpath > MAXPATHLEN");
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if ((size_t)read(sv[1], canon_dir, len) != len)
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err(1, "mp 2");
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if (read(sv[1], &len, sizeof(len)) != sizeof(len))
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err(1, "fn 1");
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if (len > MAXPATHLEN)
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err(1, "devpath > MAXPATHLEN");
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if ((size_t)read(sv[1], canon_dev, len) != len)
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err(1, "fn 2");
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if (read(sv[1], mntflags, sizeof(*mntflags)) != sizeof(*mntflags))
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err(1, "mntflags");
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if (read(sv[1], kargs, sizeof(len)) != sizeof(len)) /* unused now */
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err(1, "unused len");
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if (read(sv[1], kargs, sizeof(*kargs)) != sizeof(*kargs))
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err(1, "puffs_args");
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if (read(sv[1], pflags, sizeof(*pflags)) != sizeof(*pflags))
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err(1, "pflags");
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/* XXX: some adjustments */
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*pflags |= PUFFS_KFLAG_NOCACHE;
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*pflags &= ~PUFFS_FLAG_BUILDPATH;
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rv = rump_pub_syspuffs_glueinit(sv[1], &kargs->pa_fd);
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assert(rv == 0);
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}
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