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Diffstat (limited to 'usr.sbin/extattr/rmextattr.c')
-rw-r--r--usr.sbin/extattr/rmextattr.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/usr.sbin/extattr/rmextattr.c b/usr.sbin/extattr/rmextattr.c
new file mode 100644
index 000000000000..305feb2b8f21
--- /dev/null
+++ b/usr.sbin/extattr/rmextattr.c
@@ -0,0 +1,314 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2002, 2003 Networks Associates Technology, Inc.
+ * Copyright (c) 2002 Poul-Henning Kamp.
+ * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by Poul-Henning
+ * Kamp and Network Associates Laboratories, 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.
+ */
+
+#include <sys/types.h>
+#include <sys/sbuf.h>
+#include <sys/uio.h>
+#include <sys/extattr.h>
+
+#include <libgen.h>
+#include <libutil.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <vis.h>
+#include <err.h>
+#include <errno.h>
+
+static enum { EADUNNO, EAGET, EASET, EARM, EALS } what = EADUNNO;
+
+static void __dead2
+usage(void)
+{
+
+ switch (what) {
+ case EAGET:
+ fprintf(stderr, "usage: getextattr [-fhqsx] attrnamespace");
+ fprintf(stderr, " attrname filename ...\n");
+ exit(-1);
+ case EASET:
+ fprintf(stderr, "usage: setextattr [-fhnq] attrnamespace");
+ fprintf(stderr, " attrname attrvalue filename ...\n");
+ fprintf(stderr, " or setextattr -i [-fhnq] attrnamespace");
+ fprintf(stderr, " attrname filename ...\n");
+ exit(-1);
+ case EARM:
+ fprintf(stderr, "usage: rmextattr [-fhq] attrnamespace");
+ fprintf(stderr, " attrname filename ...\n");
+ exit(-1);
+ case EALS:
+ fprintf(stderr, "usage: lsextattr [-fhq] attrnamespace");
+ fprintf(stderr, " filename ...\n");
+ exit(-1);
+ case EADUNNO:
+ default:
+ fprintf(stderr, "usage: (getextattr|lsextattr|rmextattr");
+ fprintf(stderr, "|setextattr)\n");
+ exit (-1);
+ }
+}
+
+static void
+mkbuf(char **buf, int *oldlen, int newlen)
+{
+
+ if (*oldlen >= newlen)
+ return;
+ if (*buf != NULL)
+ free(*buf);
+ *buf = malloc(newlen);
+ if (*buf == NULL)
+ err(1, "malloc");
+ *oldlen = newlen;
+}
+
+int
+main(int argc, char *argv[])
+{
+#define STDIN_BUF_SZ 4096
+ char stdin_data[STDIN_BUF_SZ];
+ char *p;
+
+ const char *options, *attrname;
+ size_t len;
+ ssize_t ret;
+ int ch, error, i, arg_counter, attrnamespace, minargc;
+
+ char *visbuf = NULL;
+ int visbuflen = 0;
+ char *buf = NULL;
+ int buflen = 0;
+ struct sbuf *attrvalue = NULL;
+ int flag_force = 0;
+ int flag_nofollow = 0;
+ int flag_null = 0;
+ int count_quiet = 0;
+ int flag_from_stdin = 0;
+ int flag_string = 0;
+ int flag_hex = 0;
+
+ p = basename(argv[0]);
+ if (p == NULL)
+ p = argv[0];
+ if (!strcmp(p, "getextattr")) {
+ what = EAGET;
+ options = "fhqsx";
+ minargc = 3;
+ } else if (!strcmp(p, "setextattr")) {
+ what = EASET;
+ options = "fhinq";
+ minargc = 3;
+ } else if (!strcmp(p, "rmextattr")) {
+ what = EARM;
+ options = "fhq";
+ minargc = 3;
+ } else if (!strcmp(p, "lsextattr")) {
+ what = EALS;
+ options = "fhq";
+ minargc = 2;
+ } else {
+ usage();
+ }
+
+ while ((ch = getopt(argc, argv, options)) != -1) {
+ switch (ch) {
+ case 'f':
+ flag_force = 1;
+ break;
+ case 'h':
+ flag_nofollow = 1;
+ break;
+ case 'i':
+ flag_from_stdin = 1;
+ break;
+ case 'n':
+ flag_null = 1;
+ break;
+ case 'q':
+ count_quiet += 1;
+ break;
+ case 's':
+ flag_string = 1;
+ break;
+ case 'x':
+ flag_hex = 1;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (what == EASET && flag_from_stdin == 0)
+ minargc++;
+
+ if (argc < minargc)
+ usage();
+
+ error = extattr_string_to_namespace(argv[0], &attrnamespace);
+ if (error)
+ err(-1, "%s", argv[0]);
+ argc--; argv++;
+
+ if (what != EALS) {
+ attrname = argv[0];
+ argc--; argv++;
+ } else
+ attrname = NULL;
+
+ if (what == EASET) {
+ attrvalue = sbuf_new_auto();
+ if (flag_from_stdin) {
+ while ((error = read(0, stdin_data, STDIN_BUF_SZ)) > 0)
+ sbuf_bcat(attrvalue, stdin_data, error);
+ } else {
+ sbuf_cpy(attrvalue, argv[0]);
+ argc--; argv++;
+ }
+ sbuf_finish(attrvalue);
+ }
+
+ for (arg_counter = 0; arg_counter < argc; arg_counter++) {
+ switch (what) {
+ case EARM:
+ if (flag_nofollow)
+ error = extattr_delete_link(argv[arg_counter],
+ attrnamespace, attrname);
+ else
+ error = extattr_delete_file(argv[arg_counter],
+ attrnamespace, attrname);
+ if (error >= 0)
+ continue;
+ break;
+ case EASET:
+ len = sbuf_len(attrvalue) + flag_null;
+ if (flag_nofollow)
+ ret = extattr_set_link(argv[arg_counter],
+ attrnamespace, attrname,
+ sbuf_data(attrvalue), len);
+ else
+ ret = extattr_set_file(argv[arg_counter],
+ attrnamespace, attrname,
+ sbuf_data(attrvalue), len);
+ if (ret >= 0) {
+ if ((size_t)ret != len && !count_quiet) {
+ warnx("Set %zd bytes of %zu for %s",
+ ret, len, attrname);
+ }
+ continue;
+ }
+ break;
+ case EALS:
+ if (flag_nofollow)
+ ret = extattr_list_link(argv[arg_counter],
+ attrnamespace, NULL, 0);
+ else
+ ret = extattr_list_file(argv[arg_counter],
+ attrnamespace, NULL, 0);
+ if (ret < 0)
+ break;
+ mkbuf(&buf, &buflen, ret);
+ if (flag_nofollow)
+ ret = extattr_list_link(argv[arg_counter],
+ attrnamespace, buf, buflen);
+ else
+ ret = extattr_list_file(argv[arg_counter],
+ attrnamespace, buf, buflen);
+ if (ret < 0)
+ break;
+ if (!count_quiet)
+ printf("%s\t", argv[arg_counter]);
+ for (i = 0; i < ret; i += ch + 1) {
+ /* The attribute name length is unsigned. */
+ ch = (unsigned char)buf[i];
+ printf("%s%*.*s", i ? "\t" : "",
+ ch, ch, buf + i + 1);
+ }
+ if (!count_quiet || ret > 0)
+ printf("\n");
+ continue;
+ case EAGET:
+ if (flag_nofollow)
+ ret = extattr_get_link(argv[arg_counter],
+ attrnamespace, attrname, NULL, 0);
+ else
+ ret = extattr_get_file(argv[arg_counter],
+ attrnamespace, attrname, NULL, 0);
+ if (ret < 0)
+ break;
+ mkbuf(&buf, &buflen, ret);
+ if (flag_nofollow)
+ ret = extattr_get_link(argv[arg_counter],
+ attrnamespace, attrname, buf, buflen);
+ else
+ ret = extattr_get_file(argv[arg_counter],
+ attrnamespace, attrname, buf, buflen);
+ if (ret < 0)
+ break;
+ if (!count_quiet)
+ printf("%s\t", argv[arg_counter]);
+ if (flag_string) {
+ mkbuf(&visbuf, &visbuflen, ret * 4 + 1);
+ strvisx(visbuf, buf, ret,
+ VIS_SAFE | VIS_WHITE);
+ printf("\"%s\"", visbuf);
+ } else if (flag_hex) {
+ for (i = 0; i < ret; i++)
+ printf("%s%02x", i ? " " : "",
+ (unsigned char)buf[i]);
+ } else {
+ fwrite(buf, ret, 1, stdout);
+ }
+ if (count_quiet < 2)
+ printf("\n");
+ continue;
+ default:
+ break;
+ }
+ if (!count_quiet)
+ warn("%s: failed", argv[arg_counter]);
+ if (flag_force)
+ continue;
+ return(1);
+ }
+ return (0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 04:56:12 +0000