freebsd-nq/usr.sbin/getextattr/getextattr.c
David Malone 228ee8e7b4 Make usage match options.
Approved by:	rwatson
2002-07-27 23:19:25 +00:00

160 lines
4.1 KiB
C

/*-
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed by Robert Watson for the TrustedBSD Project.
*
* This software was developed for the FreeBSD Project in part by NAI Labs,
* the Security Research Division of Network Associates, Inc. under
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
* CHATS research program.
*
* 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.
* 3. The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* 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.
*
* $FreeBSD$
*/
/*
* TrustedBSD Project - extended attribute support
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/extattr.h>
#include <libutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <vis.h>
#define BUFSIZE 2048
void usage(void);
void
usage(void)
{
fprintf(stderr, "getextattr [-ls] [attrnamespace] [attrname] "
"[filename ...]\n");
exit(-1);
}
int
main(int argc, char *argv[])
{
size_t len;
char *attrname;
char *buf, *visbuf;
int ch, error, i, arg_counter, attrnamespace;
int flag_as_string = 0;
int flag_reverse = 0;
while ((ch = getopt(argc, argv, "ls")) != -1) {
switch (ch) {
case 'l':
flag_reverse = 1;
case 's':
flag_as_string = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc < 3)
usage();
error = extattr_string_to_namespace(argv[0], &attrnamespace);
if (error) {
perror(argv[0]);
return (-1);
}
attrname = argv[1];
argc--;
argv++;
/*
* XXX: Note: now that EAs support querying the size, we could
* actually allocate a buffer of the right size, rather than
* truncating at BUFSIZE.
*/
for (arg_counter = 1; arg_counter < argc; arg_counter++) {
len = extattr_get_file(argv[arg_counter], attrnamespace,
attrname, NULL, 0);
if (len == -1) {
perror(argv[arg_counter]);
continue;
}
buf = (char *)malloc(len);
if (buf == NULL) {
perror("malloc");
return (-1);
}
error = extattr_get_file(argv[arg_counter], attrnamespace,
attrname, buf, BUFSIZE);
if (error == -1)
perror(argv[arg_counter]);
else {
if (flag_as_string) {
visbuf = (char *)malloc(len*4);
if (visbuf == NULL) {
perror("malloc");
return (-1);
}
strvisx(visbuf, buf, error, VIS_SAFE
| VIS_WHITE);
if (flag_reverse) {
printf("%s ", visbuf);
printf("%s\n", argv[arg_counter]);
} else {
printf("%s:", argv[arg_counter]);
printf(" \"%s\"\n", visbuf);
}
free(visbuf);
} else {
printf("%s:", argv[arg_counter]);
for (i = 0; i < error; i++)
if (i % 16 == 0)
printf("\n %02x ", buf[i]);
else if (i % 8 == 0)
printf(" %02x ", buf[i]);
else
printf("%02x ", buf[i]);
printf("\n");
}
}
free(buf);
}
return (0);
}