Extended Attribute support, from FreeBSD/TrustedBSD. ok art@ deraadt@

1 files changed, 146 insertions, 0 deletions

diff --git a/usr.sbin/getextattr/getextattr.c b/usr.sbin/getextattr/getextattr.c
new file mode 100644
index 00000000000..c7952bbc2ea
--- /dev/null
+++ b/usr.sbin/getextattr/getextattr.c
@@ -0,0 +1,146 @@
+/*	$OpenBSD: getextattr.c,v 1.1 2002/02/22 21:10:30 drahn Exp $	*/
+/*-
+ * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * $FreeBSD: getextattr.c,v 1.5 2001/06/24 20:25:17 dd Exp $
+ */
+/*
+ * TrustedBSD Project - extended attribute support
+ */
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/extattr.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <vis.h>
+
+void
+usage(void)
+{
+
+	fprintf(stderr, "getextattr [-s] [attrnamespace] [attrname] "
+	    "[filename ...]\n");
+	exit(1);
+}
+
+extern char	*optarg;
+extern int	optind;
+
+#define BUFSIZE	2048
+
+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++;
+
+	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, len);
+
+		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);
+}