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[src/trunk]: src/sbin/mount_puffs Add a generic puffs kernel utility for quer...
details: https://anonhg.NetBSD.org/src/rev/4c2ff310f9d6
branches: trunk
changeset: 750797:4c2ff310f9d6
user: pooka <pooka%NetBSD.org@localhost>
date: Thu Jan 14 21:25:48 2010 +0000
description:
Add a generic puffs kernel utility for querying mount arguments.
E.g.:
golem> dtfs -r 'chr 15 25' dtfs /puffs
golem> mount_puffs -o getargs dtfs /puffs
version=26, flags=0x10, root cookie=0xbb90c0c0, root type=VCHR, root size=0, root rdev=0xf19
diffstat:
sbin/mount_puffs/Makefile | 11 ++++
sbin/mount_puffs/mount_puffs.8 | 50 ++++++++++++++++++
sbin/mount_puffs/mount_puffs.c | 111 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 172 insertions(+), 0 deletions(-)
diffs (184 lines):
diff -r aa091e2e98f0 -r 4c2ff310f9d6 sbin/mount_puffs/Makefile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sbin/mount_puffs/Makefile Thu Jan 14 21:25:48 2010 +0000
@@ -0,0 +1,11 @@
+# $NetBSD: Makefile,v 1.1 2010/01/14 21:25:48 pooka Exp $
+#
+
+PROG= mount_puffs
+
+DPADD+= ${LIBUTIL}
+LDADD+= -lutil
+
+MAN= mount_puffs.8
+
+.include <bsd.prog.mk>
diff -r aa091e2e98f0 -r 4c2ff310f9d6 sbin/mount_puffs/mount_puffs.8
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sbin/mount_puffs/mount_puffs.8 Thu Jan 14 21:25:48 2010 +0000
@@ -0,0 +1,50 @@
+.\" $NetBSD: mount_puffs.8,v 1.1 2010/01/14 21:25:48 pooka Exp $
+.\"
+.\" Copyright (c) 2010 Antti Kantee. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd January 14, 2010
+.Dt MOUNT_PUFFS 8
+.Os
+.Sh NAME
+.Nm mount_puffs
+.Nd print arguments to puffs mounts
+.Sh SYNOPSIS
+.Nm
+.Fl o Ar getargs
+.Ar puffs
+.Ar mount_point
+.Sh DESCRIPTION
+The
+.Nm
+program prints the kernel arguments for a puffs mount.
+It is typically executed by
+.Ic mount -vv .
+.Sh SEE ALSO
+.Xr puffs 4 ,
+.Xr mount 8
+.Sh HISTORY
+The
+.Nm
+utility first appeared in
+.Nx 6.0 .
diff -r aa091e2e98f0 -r 4c2ff310f9d6 sbin/mount_puffs/mount_puffs.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sbin/mount_puffs/mount_puffs.c Thu Jan 14 21:25:48 2010 +0000
@@ -0,0 +1,111 @@
+/* $NetBSD: mount_puffs.c,v 1.1 2010/01/14 21:25:48 pooka Exp $ */
+
+/*
+ * Copyright (c) 2010 Antti Kantee. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This is to support -o getargs without having to replicate
+ * it in every file server.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: mount_puffs.c,v 1.1 2010/01/14 21:25:48 pooka Exp $");
+#endif /* !lint */
+
+#include <sys/param.h>
+#include <sys/mount.h>
+
+#include <fs/puffs/puffs_msgif.h>
+
+#include <err.h>
+#include <mntopts.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+const struct mntopt getargmopt[] = {
+ MOPT_GETARGS,
+ MOPT_NULL,
+};
+
+static void
+usage(void)
+{
+
+ fprintf(stderr, "usage: %s -o getargs spec dir\n", getprogname());
+ exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+ const char *vtypes[] = { VNODE_TYPES };
+ struct puffs_kargs kargs;
+ mntoptparse_t mp;
+ int mntflags, f;
+ int ch;
+
+ if (argc < 3)
+ usage();
+
+ mntflags = 0;
+ while ((ch = getopt(argc, argv, "o:")) != -1) {
+ switch (ch) {
+ case 'o':
+ mp = getmntopts(optarg, getargmopt, &mntflags, &f);
+ if (mp == NULL)
+ err(1, "getmntopts");
+ freemntopts(mp);
+ break;
+ default:
+ usage();
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc != 2)
+ usage();
+
+ if (mntflags != MNT_GETARGS)
+ usage();
+
+ if (mount(MOUNT_PUFFS, argv[1], mntflags, &kargs, sizeof(kargs)) == -1)
+ err(1, "mount");
+
+ printf("version=%d, ", kargs.pa_vers & ~PUFFSDEVELVERS);
+ printf("flags=0x%x, ", kargs.pa_flags);
+
+ printf("root cookie=%p, ", kargs.pa_root_cookie);
+ printf("root type=%s", vtypes[kargs.pa_root_vtype]);
+
+ if (kargs.pa_root_vtype != VDIR)
+ printf(", root size=%llu",
+ (unsigned long long)kargs.pa_root_vsize);
+ if (kargs.pa_root_vtype == VCHR || kargs.pa_root_vtype == VBLK)
+ printf(", root rdev=0x%" PRIx64, (uint64_t)kargs.pa_root_rdev);
+ printf("\n");
+}
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