mirror of
https://github.com/freebsd/freebsd-src
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315 lines
7.9 KiB
C
315 lines
7.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2002, 2003 Networks Associates Technology, Inc.
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* Copyright (c) 2002 Poul-Henning Kamp.
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* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning
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* Kamp and Network Associates Laboratories, the Security Research Division
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* of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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* ("CBOSS"), as part of the DARPA CHATS research program
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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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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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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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#include <sys/types.h>
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#include <sys/sbuf.h>
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#include <sys/uio.h>
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#include <sys/extattr.h>
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#include <libgen.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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#include <vis.h>
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#include <err.h>
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#include <errno.h>
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static enum { EADUNNO, EAGET, EASET, EARM, EALS } what = EADUNNO;
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static void __dead2
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usage(void)
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{
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switch (what) {
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case EAGET:
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fprintf(stderr, "usage: getextattr [-fhqsx] attrnamespace");
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fprintf(stderr, " attrname filename ...\n");
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exit(-1);
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case EASET:
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fprintf(stderr, "usage: setextattr [-fhnq] attrnamespace");
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fprintf(stderr, " attrname attrvalue filename ...\n");
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fprintf(stderr, " or setextattr -i [-fhnq] attrnamespace");
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fprintf(stderr, " attrname filename ...\n");
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exit(-1);
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case EARM:
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fprintf(stderr, "usage: rmextattr [-fhq] attrnamespace");
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fprintf(stderr, " attrname filename ...\n");
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exit(-1);
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case EALS:
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fprintf(stderr, "usage: lsextattr [-fhq] attrnamespace");
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fprintf(stderr, " filename ...\n");
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exit(-1);
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case EADUNNO:
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default:
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fprintf(stderr, "usage: (getextattr|lsextattr|rmextattr");
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fprintf(stderr, "|setextattr)\n");
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exit (-1);
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}
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}
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static void
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mkbuf(char **buf, int *oldlen, int newlen)
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{
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if (*oldlen >= newlen)
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return;
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if (*buf != NULL)
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free(*buf);
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*buf = malloc(newlen);
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if (*buf == NULL)
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err(1, "malloc");
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*oldlen = newlen;
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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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#define STDIN_BUF_SZ 4096
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char stdin_data[STDIN_BUF_SZ];
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char *p;
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const char *options, *attrname;
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size_t len;
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ssize_t ret;
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int ch, error, i, arg_counter, attrnamespace, minargc;
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char *visbuf = NULL;
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int visbuflen = 0;
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char *buf = NULL;
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int buflen = 0;
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struct sbuf *attrvalue = NULL;
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int flag_force = 0;
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int flag_nofollow = 0;
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int flag_null = 0;
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int count_quiet = 0;
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int flag_from_stdin = 0;
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int flag_string = 0;
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int flag_hex = 0;
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p = basename(argv[0]);
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if (p == NULL)
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p = argv[0];
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if (!strcmp(p, "getextattr")) {
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what = EAGET;
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options = "fhqsx";
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minargc = 3;
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} else if (!strcmp(p, "setextattr")) {
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what = EASET;
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options = "fhinq";
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minargc = 3;
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} else if (!strcmp(p, "rmextattr")) {
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what = EARM;
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options = "fhq";
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minargc = 3;
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} else if (!strcmp(p, "lsextattr")) {
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what = EALS;
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options = "fhq";
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minargc = 2;
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} else {
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usage();
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}
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while ((ch = getopt(argc, argv, options)) != -1) {
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switch (ch) {
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case 'f':
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flag_force = 1;
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break;
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case 'h':
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flag_nofollow = 1;
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break;
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case 'i':
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flag_from_stdin = 1;
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break;
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case 'n':
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flag_null = 1;
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break;
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case 'q':
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count_quiet += 1;
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break;
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case 's':
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flag_string = 1;
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break;
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case 'x':
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flag_hex = 1;
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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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}
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argc -= optind;
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argv += optind;
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if (what == EASET && flag_from_stdin == 0)
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minargc++;
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if (argc < minargc)
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usage();
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error = extattr_string_to_namespace(argv[0], &attrnamespace);
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if (error)
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err(-1, "%s", argv[0]);
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argc--; argv++;
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if (what != EALS) {
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attrname = argv[0];
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argc--; argv++;
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} else
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attrname = NULL;
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if (what == EASET) {
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attrvalue = sbuf_new_auto();
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if (flag_from_stdin) {
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while ((error = read(0, stdin_data, STDIN_BUF_SZ)) > 0)
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sbuf_bcat(attrvalue, stdin_data, error);
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} else {
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sbuf_cpy(attrvalue, argv[0]);
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argc--; argv++;
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}
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sbuf_finish(attrvalue);
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}
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for (arg_counter = 0; arg_counter < argc; arg_counter++) {
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switch (what) {
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case EARM:
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if (flag_nofollow)
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error = extattr_delete_link(argv[arg_counter],
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attrnamespace, attrname);
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else
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error = extattr_delete_file(argv[arg_counter],
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attrnamespace, attrname);
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if (error >= 0)
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continue;
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break;
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case EASET:
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len = sbuf_len(attrvalue) + flag_null;
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if (flag_nofollow)
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ret = extattr_set_link(argv[arg_counter],
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attrnamespace, attrname,
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sbuf_data(attrvalue), len);
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else
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ret = extattr_set_file(argv[arg_counter],
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attrnamespace, attrname,
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sbuf_data(attrvalue), len);
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if (ret >= 0) {
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if ((size_t)ret != len && !count_quiet) {
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warnx("Set %zd bytes of %zu for %s",
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ret, len, attrname);
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}
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continue;
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}
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break;
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case EALS:
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if (flag_nofollow)
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ret = extattr_list_link(argv[arg_counter],
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attrnamespace, NULL, 0);
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else
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ret = extattr_list_file(argv[arg_counter],
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attrnamespace, NULL, 0);
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if (ret < 0)
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break;
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mkbuf(&buf, &buflen, ret);
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if (flag_nofollow)
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ret = extattr_list_link(argv[arg_counter],
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attrnamespace, buf, buflen);
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else
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ret = extattr_list_file(argv[arg_counter],
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attrnamespace, buf, buflen);
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if (ret < 0)
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break;
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if (!count_quiet)
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printf("%s\t", argv[arg_counter]);
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for (i = 0; i < ret; i += ch + 1) {
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/* The attribute name length is unsigned. */
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ch = (unsigned char)buf[i];
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printf("%s%*.*s", i ? "\t" : "",
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ch, ch, buf + i + 1);
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}
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if (!count_quiet || ret > 0)
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printf("\n");
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continue;
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case EAGET:
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if (flag_nofollow)
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ret = extattr_get_link(argv[arg_counter],
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attrnamespace, attrname, NULL, 0);
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else
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ret = extattr_get_file(argv[arg_counter],
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attrnamespace, attrname, NULL, 0);
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if (ret < 0)
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break;
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mkbuf(&buf, &buflen, ret);
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if (flag_nofollow)
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ret = extattr_get_link(argv[arg_counter],
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attrnamespace, attrname, buf, buflen);
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else
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ret = extattr_get_file(argv[arg_counter],
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attrnamespace, attrname, buf, buflen);
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if (ret < 0)
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break;
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if (!count_quiet)
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printf("%s\t", argv[arg_counter]);
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if (flag_string) {
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mkbuf(&visbuf, &visbuflen, ret * 4 + 1);
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strvisx(visbuf, buf, ret,
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VIS_SAFE | VIS_WHITE);
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printf("\"%s\"", visbuf);
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} else if (flag_hex) {
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for (i = 0; i < ret; i++)
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printf("%s%02x", i ? " " : "",
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(unsigned char)buf[i]);
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} else {
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fwrite(buf, ret, 1, stdout);
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}
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if (count_quiet < 2)
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printf("\n");
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continue;
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default:
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break;
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}
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if (!count_quiet)
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warn("%s: failed", argv[arg_counter]);
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if (flag_force)
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continue;
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return(1);
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}
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return (0);
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}
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