/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 1999-2002 Robert N. M. Watson
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
* 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.
*/
/*
* Developed by the TrustedBSD Project.
* Support for file system extended attribute.
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/extattr.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <ufs/ufs/extattr.h>
#include <errno.h>
#include <fcntl.h>
#include <libutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int initattr(int argc, char *argv[]);
int showattr(int argc, char *argv[]);
long num_inodes_by_path(char *path);
void usage(void);
void
usage(void)
{
fprintf(stderr,
"usage:\n"
" extattrctl start path\n"
" extattrctl stop path\n"
" extattrctl initattr [-f] [-p path] attrsize attrfile\n"
" extattrctl showattr attrfile\n"
" extattrctl enable path attrnamespace attrname attrfile\n"
" extattrctl disable path attrnamespace attrname\n");
exit(-1);
}
long
num_inodes_by_path(char *path)
{
struct statfs buf;
int error;
error = statfs(path, &buf);
if (error) {
perror("statfs");
return (-1);
}
return (buf.f_files);
}
static const char zero_buf[8192];
int
initattr(int argc, char *argv[])
{
struct ufs_extattr_fileheader uef;
char *fs_path = NULL;
int ch, i, error, flags;
ssize_t wlen;
size_t easize;
flags = O_CREAT | O_WRONLY | O_TRUNC | O_EXCL;
optind = 0;
while ((ch = getopt(argc, argv, "fp:r:w:")) != -1)
switch (ch) {
case 'f':
flags &= ~O_EXCL;
break;
case 'p':
fs_path = optarg;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
error = 0;
if ((i = open(argv[1], flags, 0600)) == -1) {
/* unable to open file */
perror(argv[1]);
return (-1);
}
uef.uef_magic = UFS_EXTATTR_MAGIC;
uef.uef_version = UFS_EXTATTR_VERSION;
uef.uef_size = atoi(argv[0]);
if (write(i, &uef, sizeof(uef)) == -1)
error = -1;
else if (fs_path != NULL) {
easize = (sizeof uef + uef.uef_size) *
num_inodes_by_path(fs_path);
while (easize > 0) {
if (easize > sizeof zero_buf)
wlen = write(i, zero_buf, sizeof zero_buf);
else
wlen = write(i, zero_buf, easize);
if (wlen == -1) {
error = -1;
break;
}
easize -= wlen;
}
}
if (error == -1) {
perror(argv[1]);
unlink(argv[1]);
close(i);
return (-1);
}
close(i);
return (0);
}
int
showattr(int argc, char *argv[])
{
struct ufs_extattr_fileheader uef;
int i, fd;
if (argc != 1)
usage();
fd = open(argv[0], O_RDONLY);
if (fd == -1) {
perror(argv[0]);
return (-1);
}
i = read(fd, &uef, sizeof(uef));
if (i == -1) {
perror(argv[0]);
close(fd);
return (-1);
}
if (i != sizeof(uef)) {
fprintf(stderr, "%s: invalid file header\n", argv[0]);
close(fd);
return (-1);
}
if (uef.uef_magic != UFS_EXTATTR_MAGIC) {
fprintf(stderr, "%s: bad magic\n", argv[0]);
close(fd);
return (-1);
}
printf("%s: version %d, size %d\n", argv[0], uef.uef_version,
uef.uef_size);
close(fd);
return (0);
}
int
main(int argc, char *argv[])
{
int error = 0, attrnamespace;
if (argc < 2)
usage();
if (!strcmp(argv[1], "start")) {
if (argc != 3)
usage();
error = extattrctl(argv[2], UFS_EXTATTR_CMD_START, NULL, 0,
NULL);
if (error) {
perror("extattrctl start");
return (-1);
}
} else if (!strcmp(argv[1], "stop")) {
if (argc != 3)
usage();
error = extattrctl(argv[2], UFS_EXTATTR_CMD_STOP, NULL, 0,
NULL);
if (error) {
perror("extattrctl stop");
return (-1);
}
} else if (!strcmp(argv[1], "enable")) {
if (argc != 6)
usage();
error = extattr_string_to_namespace(argv[3], &attrnamespace);
if (error) {
perror("extattrctl enable");
return (-1);
}
error = extattrctl(argv[2], UFS_EXTATTR_CMD_ENABLE, argv[5],
attrnamespace, argv[4]);
if (error) {
perror("extattrctl enable");
return (-1);
}
} else if (!strcmp(argv[1], "disable")) {
if (argc != 5)
usage();
error = extattr_string_to_namespace(argv[3], &attrnamespace);
if (error) {
perror("extattrctl disable");
return (-1);
}
error = extattrctl(argv[2], UFS_EXTATTR_CMD_DISABLE, NULL,
attrnamespace, argv[4]);
if (error) {
perror("extattrctl disable");
return (-1);
}
} else if (!strcmp(argv[1], "initattr")) {
argc -= 2;
argv += 2;
error = initattr(argc, argv);
if (error)
return (-1);
} else if (!strcmp(argv[1], "showattr")) {
argc -= 2;
argv += 2;
error = showattr(argc, argv);
if (error)
return (-1);
} else
usage();
return (0);
}
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