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Update copyright date. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs Extracted from: green
260 lines
5.7 KiB
C
260 lines
5.7 KiB
C
/*-
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* Copyright (c) 1999-2002 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE 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
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* OR 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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* $FreeBSD$
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*/
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/*
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* Developed by the TrustedBSD Project.
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* Support for file system extended attribute.
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*/
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/extattr.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <ufs/ufs/extattr.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <libutil.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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#include <unistd.h>
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int initattr(int argc, char *argv[]);
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int showattr(int argc, char *argv[]);
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long num_inodes_by_path(char *path);
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void usage(void);
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void
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usage()
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{
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fprintf(stderr,
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"usage:\n"
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" extattrctl start path\n"
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" extattrctl stop path\n"
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" extattrctl initattr [-f] [-p path] attrsize attrfile\n"
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" extattrctl showattr attrfile\n"
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" extattrctl enable path attrnamespace attrname attrfile\n"
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" extattrctl disable path attrnamespace attrname\n");
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exit(-1);
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}
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long
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num_inodes_by_path(char *path)
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{
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struct statfs buf;
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int error;
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error = statfs(path, &buf);
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if (error) {
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perror("statfs");
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return (-1);
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}
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return (buf.f_files);
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}
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static const char zero_buf[8192];
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int
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initattr(int argc, char *argv[])
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{
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struct ufs_extattr_fileheader uef;
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char *fs_path = NULL;
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int ch, i, error, flags;
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ssize_t wlen;
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size_t easize;
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flags = O_CREAT | O_WRONLY | O_TRUNC | O_EXCL;
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optind = 0;
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while ((ch = getopt(argc, argv, "fp:r:w:")) != -1)
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switch (ch) {
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case 'f':
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flags &= ~O_EXCL;
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break;
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case 'p':
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fs_path = optarg;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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usage();
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error = 0;
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if ((i = open(argv[1], flags, 0600)) == -1) {
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/* unable to open file */
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perror(argv[1]);
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return (-1);
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}
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uef.uef_magic = UFS_EXTATTR_MAGIC;
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uef.uef_version = UFS_EXTATTR_VERSION;
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uef.uef_size = atoi(argv[0]);
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if (write(i, &uef, sizeof(uef)) == -1)
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error = -1;
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else if (fs_path != NULL) {
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easize = (sizeof uef + uef.uef_size) *
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num_inodes_by_path(fs_path);
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while (easize > 0) {
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if (easize > sizeof zero_buf)
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wlen = write(i, zero_buf, sizeof zero_buf);
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else
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wlen = write(i, zero_buf, easize);
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if (wlen == -1) {
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error = -1;
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break;
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}
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easize -= wlen;
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}
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}
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if (error == -1) {
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perror(argv[1]);
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unlink(argv[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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int
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showattr(int argc, char *argv[])
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{
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struct ufs_extattr_fileheader uef;
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int i, fd;
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if (argc != 1)
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usage();
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fd = open(argv[0], O_RDONLY);
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if (fd == -1) {
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perror(argv[0]);
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return (-1);
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}
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i = read(fd, &uef, sizeof(uef));
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if (i == -1) {
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perror(argv[0]);
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return (-1);
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}
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if (i != sizeof(uef)) {
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fprintf(stderr, "%s: invalid file header\n", argv[0]);
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return (-1);
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}
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if (uef.uef_magic != UFS_EXTATTR_MAGIC) {
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fprintf(stderr, "%s: bad magic\n", argv[0]);
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return (-1);
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}
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printf("%s: version %d, size %d\n", argv[0], uef.uef_version,
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uef.uef_size);
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return (0);
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}
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int
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main(int argc, char *argv[])
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{
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int error = 0, attrnamespace;
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if (argc < 2)
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usage();
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if (!strcmp(argv[1], "start")) {
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if (argc != 3)
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usage();
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error = extattrctl(argv[2], UFS_EXTATTR_CMD_START, NULL, 0,
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NULL);
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if (error) {
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perror("extattrctl start");
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return (-1);
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}
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} else if (!strcmp(argv[1], "stop")) {
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if (argc != 3)
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usage();
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error = extattrctl(argv[2], UFS_EXTATTR_CMD_STOP, NULL, 0,
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NULL);
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if (error) {
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perror("extattrctl stop");
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return (-1);
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}
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} else if (!strcmp(argv[1], "enable")) {
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if (argc != 6)
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usage();
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error = extattr_string_to_namespace(argv[3], &attrnamespace);
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if (error) {
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perror("extattrctl enable");
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return (-1);
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}
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error = extattrctl(argv[2], UFS_EXTATTR_CMD_ENABLE, argv[5],
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attrnamespace, argv[4]);
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if (error) {
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perror("extattrctl enable");
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return (-1);
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}
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} else if (!strcmp(argv[1], "disable")) {
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if (argc != 5)
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usage();
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error = extattr_string_to_namespace(argv[3], &attrnamespace);
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if (error) {
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perror("extattrctl disable");
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return (-1);
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}
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error = extattrctl(argv[2], UFS_EXTATTR_CMD_DISABLE, NULL,
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attrnamespace, argv[4]);
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if (error) {
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perror("extattrctl disable");
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return (-1);
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}
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} else if (!strcmp(argv[1], "initattr")) {
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argc -= 2;
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argv += 2;
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error = initattr(argc, argv);
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if (error)
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return (-1);
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} else if (!strcmp(argv[1], "showattr")) {
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argc -= 2;
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argv += 2;
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error = showattr(argc, argv);
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if (error)
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return (-1);
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} else
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usage();
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return (0);
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}
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