1*bec77c5fSjoerg /* $NetBSD: extattrctl.c,v 1.4 2011/08/31 13:32:36 joerg Exp $ */
2e1afed9cSthorpej
3e1afed9cSthorpej /*-
4e1afed9cSthorpej * Copyright (c) 1999-2002 Robert N. M. Watson
5e1afed9cSthorpej * All rights reserved.
6e1afed9cSthorpej *
7e1afed9cSthorpej * This software was developed by Robert Watson for the TrustedBSD Project.
8e1afed9cSthorpej *
9e1afed9cSthorpej * Redistribution and use in source and binary forms, with or without
10e1afed9cSthorpej * modification, are permitted provided that the following conditions
11e1afed9cSthorpej * are met:
12e1afed9cSthorpej * 1. Redistributions of source code must retain the above copyright
13e1afed9cSthorpej * notice, this list of conditions and the following disclaimer.
14e1afed9cSthorpej * 2. Redistributions in binary form must reproduce the above copyright
15e1afed9cSthorpej * notice, this list of conditions and the following disclaimer in the
16e1afed9cSthorpej * documentation and/or other materials provided with the distribution.
17e1afed9cSthorpej *
18e1afed9cSthorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19e1afed9cSthorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20e1afed9cSthorpej * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21e1afed9cSthorpej * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22e1afed9cSthorpej * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23e1afed9cSthorpej * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24e1afed9cSthorpej * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25e1afed9cSthorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26e1afed9cSthorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27e1afed9cSthorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28e1afed9cSthorpej * SUCH DAMAGE.
29e1afed9cSthorpej *
30e1afed9cSthorpej * $FreeBSD: src/usr.sbin/extattrctl/extattrctl.c,v 1.19 2002/04/19 01:42:55 rwatson Exp $
31e1afed9cSthorpej */
32e1afed9cSthorpej
33e1afed9cSthorpej /*
34e1afed9cSthorpej * Developed by the TrustedBSD Project.
35e1afed9cSthorpej * Support for file system extended attribute.
36e1afed9cSthorpej */
37e1afed9cSthorpej
38e1afed9cSthorpej #include <sys/types.h>
39e1afed9cSthorpej #include <sys/uio.h>
40e1afed9cSthorpej #include <sys/extattr.h>
41e1afed9cSthorpej #include <sys/param.h>
42e1afed9cSthorpej #include <sys/mount.h>
43e1afed9cSthorpej
44e1afed9cSthorpej #include <ufs/ufs/extattr.h>
45e1afed9cSthorpej
46e1afed9cSthorpej #include <err.h>
47e1afed9cSthorpej #include <fcntl.h>
48e1afed9cSthorpej #include <stdio.h>
49e1afed9cSthorpej #include <stdlib.h>
50e1afed9cSthorpej #include <string.h>
51e1afed9cSthorpej #include <unistd.h>
52e1afed9cSthorpej #include <util.h>
53e1afed9cSthorpej
54e1afed9cSthorpej #include <machine/bswap.h>
55e1afed9cSthorpej #include <machine/endian.h>
56e1afed9cSthorpej
57e1afed9cSthorpej static int needswap;
58e1afed9cSthorpej
59e1afed9cSthorpej static uint32_t
rw32(uint32_t v)60e1afed9cSthorpej rw32(uint32_t v)
61e1afed9cSthorpej {
62e1afed9cSthorpej if (needswap)
63e1afed9cSthorpej return (bswap32(v));
64e1afed9cSthorpej return (v);
65e1afed9cSthorpej }
66e1afed9cSthorpej
67*bec77c5fSjoerg __dead static void
usage(void)68e1afed9cSthorpej usage(void)
69e1afed9cSthorpej {
70e1afed9cSthorpej
71e1afed9cSthorpej fprintf(stderr,
72e1afed9cSthorpej "usage:\n"
73e1afed9cSthorpej " %s start path\n"
74e1afed9cSthorpej " %s stop path\n"
75e1afed9cSthorpej " %s initattr [-f] [-p path] attrsize attrfile\n"
76e1afed9cSthorpej " %s showattr attrfile\n"
77e1afed9cSthorpej " %s enable path attrnamespace attrname attrfile\n"
78e1afed9cSthorpej " %s disable path attrnamespace attrname\n",
79e1afed9cSthorpej getprogname(), getprogname(), getprogname(),
80e1afed9cSthorpej getprogname(), getprogname(), getprogname());
81e1afed9cSthorpej exit(1);
82e1afed9cSthorpej }
83e1afed9cSthorpej
84e1afed9cSthorpej static uint64_t
num_inodes_by_path(const char * path)85e1afed9cSthorpej num_inodes_by_path(const char *path)
86e1afed9cSthorpej {
87e1afed9cSthorpej struct statvfs buf;
88e1afed9cSthorpej
89e1afed9cSthorpej if (statvfs(path, &buf) == -1) {
90e1afed9cSthorpej warn("statvfs(%s)", path);
91e1afed9cSthorpej return (-1);
92e1afed9cSthorpej }
93e1afed9cSthorpej
94e1afed9cSthorpej return (buf.f_files);
95e1afed9cSthorpej }
96e1afed9cSthorpej
97e1afed9cSthorpej static const char zero_buf[8192];
98e1afed9cSthorpej
99e1afed9cSthorpej static int
initattr(int argc,char * argv[])100e1afed9cSthorpej initattr(int argc, char *argv[])
101e1afed9cSthorpej {
102e1afed9cSthorpej struct ufs_extattr_fileheader uef;
103e1afed9cSthorpej char *fs_path = NULL;
104e1afed9cSthorpej int ch, i, error, flags;
105e1afed9cSthorpej ssize_t wlen;
106e1afed9cSthorpej size_t easize;
107e1afed9cSthorpej
108e1afed9cSthorpej flags = O_CREAT | O_WRONLY | O_TRUNC | O_EXCL;
109e1afed9cSthorpej optind = 0;
110e1afed9cSthorpej while ((ch = getopt(argc, argv, "fp:r:w:")) != -1) {
111e1afed9cSthorpej switch (ch) {
112e1afed9cSthorpej case 'f':
113e1afed9cSthorpej flags &= ~O_EXCL;
114e1afed9cSthorpej break;
115e1afed9cSthorpej case 'p':
116e1afed9cSthorpej fs_path = optarg;
117e1afed9cSthorpej break;
118e1afed9cSthorpej case 'B':
119e1afed9cSthorpej #if BYTE_ORDER == LITTLE_ENDIAN
120e1afed9cSthorpej if (strcmp(optarg, "le") == 0)
121e1afed9cSthorpej needswap = 0;
122e1afed9cSthorpej else if (strcmp(optarg, "be") == 0)
123e1afed9cSthorpej needswap = 1;
124e1afed9cSthorpej else
125e1afed9cSthorpej usage();
126e1afed9cSthorpej #else
127e1afed9cSthorpej if (strcmp(optarg, "be") == 0)
128e1afed9cSthorpej needswap = 0;
129e1afed9cSthorpej else if (strcmp(optarg, "le") == 0)
130e1afed9cSthorpej needswap = 1;
131e1afed9cSthorpej else
132e1afed9cSthorpej usage();
133e1afed9cSthorpej #endif
134e1afed9cSthorpej break;
135e1afed9cSthorpej case '?':
136e1afed9cSthorpej default:
137e1afed9cSthorpej usage();
138e1afed9cSthorpej }
139e1afed9cSthorpej }
140e1afed9cSthorpej
141e1afed9cSthorpej argc -= optind;
142e1afed9cSthorpej argv += optind;
143e1afed9cSthorpej
144e1afed9cSthorpej if (argc != 2)
145e1afed9cSthorpej usage();
146e1afed9cSthorpej
147e1afed9cSthorpej error = 0;
148e1afed9cSthorpej if ((i = open(argv[1], flags, 0600)) == -1) {
149e1afed9cSthorpej warn("open(%s)", argv[1]);
150e1afed9cSthorpej return (-1);
151e1afed9cSthorpej }
152e1afed9cSthorpej uef.uef_magic = rw32(UFS_EXTATTR_MAGIC);
153e1afed9cSthorpej uef.uef_version = rw32(UFS_EXTATTR_VERSION);
154e1afed9cSthorpej uef.uef_size = rw32(atoi(argv[0]));
155e1afed9cSthorpej if (write(i, &uef, sizeof(uef)) != sizeof(uef)) {
156f5e448fdSwiz warn("unable to write attribute file header");
157e1afed9cSthorpej error = -1;
158e1afed9cSthorpej } else if (fs_path != NULL) {
159e1afed9cSthorpej easize = (sizeof(uef) + uef.uef_size) *
160e1afed9cSthorpej num_inodes_by_path(fs_path);
161e1afed9cSthorpej while (easize > 0) {
162e1afed9cSthorpej size_t x = (easize > sizeof(zero_buf)) ?
163e1afed9cSthorpej sizeof(zero_buf) : easize;
164e1afed9cSthorpej wlen = write(i, zero_buf, x);
16598e270d7Slukem if ((size_t)wlen != x) {
166e1afed9cSthorpej warn("unable to write attribute file");
167e1afed9cSthorpej error = -1;
168e1afed9cSthorpej break;
169e1afed9cSthorpej }
170e1afed9cSthorpej easize -= wlen;
171e1afed9cSthorpej }
172e1afed9cSthorpej }
173f5e448fdSwiz close(i);
174e1afed9cSthorpej if (error == -1) {
175e1afed9cSthorpej unlink(argv[1]);
176e1afed9cSthorpej return (-1);
177e1afed9cSthorpej }
178e1afed9cSthorpej
179e1afed9cSthorpej return (0);
180e1afed9cSthorpej }
181e1afed9cSthorpej
182e1afed9cSthorpej static int
showattr(int argc,char * argv[])183e1afed9cSthorpej showattr(int argc, char *argv[])
184e1afed9cSthorpej {
185e1afed9cSthorpej struct ufs_extattr_fileheader uef;
186e1afed9cSthorpej int i, fd;
187e1afed9cSthorpej const char *bo;
188e1afed9cSthorpej
189e1afed9cSthorpej if (argc != 1)
190e1afed9cSthorpej usage();
191e1afed9cSthorpej
192e1afed9cSthorpej fd = open(argv[0], O_RDONLY);
193e1afed9cSthorpej if (fd == -1) {
194e1afed9cSthorpej warn("open(%s)", argv[0]);
195e1afed9cSthorpej return (-1);
196e1afed9cSthorpej }
197e1afed9cSthorpej
198e1afed9cSthorpej i = read(fd, &uef, sizeof(uef));
199e1afed9cSthorpej if (i != sizeof(uef)) {
200e1afed9cSthorpej warn("unable to read attribute file header");
201f5e448fdSwiz (void)close(fd);
202e1afed9cSthorpej return (-1);
203e1afed9cSthorpej }
204e1afed9cSthorpej
205e1afed9cSthorpej if (rw32(uef.uef_magic) != UFS_EXTATTR_MAGIC) {
206e1afed9cSthorpej needswap = 1;
207e1afed9cSthorpej if (rw32(uef.uef_magic) != UFS_EXTATTR_MAGIC) {
208e1afed9cSthorpej fprintf(stderr, "%s: bad magic\n", argv[0]);
209f5e448fdSwiz (void)close(fd);
210e1afed9cSthorpej return (-1);
211e1afed9cSthorpej }
212e1afed9cSthorpej }
213e1afed9cSthorpej
214e1afed9cSthorpej #if BYTE_ORDER == LITTLE_ENDIAN
215e1afed9cSthorpej bo = needswap ? "big-endian" : "little-endian";
216e1afed9cSthorpej #else
217e1afed9cSthorpej bo = needswap ? "little-endian" : "big-endian";
218e1afed9cSthorpej #endif
219e1afed9cSthorpej
220e1afed9cSthorpej printf("%s: version %u, size %u, byte-order: %s\n",
221e1afed9cSthorpej argv[0], rw32(uef.uef_version), rw32(uef.uef_size), bo);
222e1afed9cSthorpej
223f5e448fdSwiz close(fd);
224e1afed9cSthorpej return (0);
225e1afed9cSthorpej }
226e1afed9cSthorpej
227e1afed9cSthorpej int
main(int argc,char * argv[])228e1afed9cSthorpej main(int argc, char *argv[])
229e1afed9cSthorpej {
230e1afed9cSthorpej int error = 0, attrnamespace;
231e1afed9cSthorpej
232e1afed9cSthorpej if (argc < 2)
233e1afed9cSthorpej usage();
234e1afed9cSthorpej
235e1afed9cSthorpej if (!strcmp(argv[1], "start")) {
236e1afed9cSthorpej if (argc != 3)
237e1afed9cSthorpej usage();
238e1afed9cSthorpej error = extattrctl(argv[2], UFS_EXTATTR_CMD_START, NULL, 0,
239e1afed9cSthorpej NULL);
240e1afed9cSthorpej if (error)
241e1afed9cSthorpej err(1, "start");
242e1afed9cSthorpej } else if (!strcmp(argv[1], "stop")) {
243e1afed9cSthorpej if (argc != 3)
244e1afed9cSthorpej usage();
245e1afed9cSthorpej error = extattrctl(argv[2], UFS_EXTATTR_CMD_STOP, NULL, 0,
246e1afed9cSthorpej NULL);
247e1afed9cSthorpej if (error)
248e1afed9cSthorpej err(1, "stop");
249e1afed9cSthorpej } else if (!strcmp(argv[1], "enable")) {
250e1afed9cSthorpej if (argc != 6)
251e1afed9cSthorpej usage();
252e1afed9cSthorpej error = extattr_string_to_namespace(argv[3], &attrnamespace);
253e1afed9cSthorpej if (error)
254e1afed9cSthorpej errx(1, "bad namespace: %s", argv[3]);
255e1afed9cSthorpej error = extattrctl(argv[2], UFS_EXTATTR_CMD_ENABLE, argv[5],
256e1afed9cSthorpej attrnamespace, argv[4]);
257e1afed9cSthorpej if (error)
258e1afed9cSthorpej err(1, "enable");
259e1afed9cSthorpej } else if (!strcmp(argv[1], "disable")) {
260e1afed9cSthorpej if (argc != 5)
261e1afed9cSthorpej usage();
262e1afed9cSthorpej error = extattr_string_to_namespace(argv[3], &attrnamespace);
263e1afed9cSthorpej if (error)
264e1afed9cSthorpej errx(1, "bad namespace: %s", argv[3]);
265e1afed9cSthorpej error = extattrctl(argv[2], UFS_EXTATTR_CMD_DISABLE, NULL,
266e1afed9cSthorpej attrnamespace, argv[4]);
267e1afed9cSthorpej if (error)
268e1afed9cSthorpej err(1, "disable");
269e1afed9cSthorpej } else if (!strcmp(argv[1], "initattr")) {
270e1afed9cSthorpej argc -= 2;
271e1afed9cSthorpej argv += 2;
272e1afed9cSthorpej error = initattr(argc, argv);
273e1afed9cSthorpej if (error)
274e1afed9cSthorpej return (1);
275e1afed9cSthorpej } else if (!strcmp(argv[1], "showattr")) {
276e1afed9cSthorpej argc -= 2;
277e1afed9cSthorpej argv += 2;
278e1afed9cSthorpej error = showattr(argc, argv);
279e1afed9cSthorpej if (error)
280e1afed9cSthorpej return (1);
281e1afed9cSthorpej } else
282e1afed9cSthorpej usage();
283e1afed9cSthorpej
284e1afed9cSthorpej return (0);
285e1afed9cSthorpej }
286