1 files changed, 287 insertions, 0 deletions
diff --git a/bin/getfacl/getfacl.c b/bin/getfacl/getfacl.c
new file mode 100644
index 000000000000..5f55819c81a1
--- /dev/null
+++ b/bin/getfacl/getfacl.c
@@ -0,0 +1,287 @@
+/*-
+ * Copyright (c) 1999, 2001, 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.
+ */
+/*
+ * getfacl -- POSIX.1e utility to extract ACLs from files and directories
+ * and send the results to stdout
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/acl.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <getopt.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static int more_than_one = 0;
+
+static const struct option long_options[] =
+{
+	{ "default",		no_argument,	NULL,	'd' },
+	{ "numeric",		no_argument,	NULL,	'n' },
+	{ "omit-header",	no_argument,	NULL,	'q' },
+	{ "skip-base",		no_argument,	NULL,	's' },
+	{ NULL,			no_argument,	NULL,	0 },
+};
+
+static void
+usage(void)
+{
+
+	fprintf(stderr, "getfacl [-dhnqv] [file ...]\n");
+}
+
+static char *
+getuname(uid_t uid)
+{
+	struct passwd *pw;
+	static char uids[10];
+
+	if ((pw = getpwuid(uid)) == NULL) {
+		(void)snprintf(uids, sizeof(uids), "%u", uid);
+		return (uids);
+	} else
+		return (pw->pw_name);
+}
+
+static char *
+getgname(gid_t gid)
+{
+	struct group *gr;
+	static char gids[10];
+
+	if ((gr = getgrgid(gid)) == NULL) {
+		(void)snprintf(gids, sizeof(gids), "%u", gid);
+		return (gids);
+	} else
+		return (gr->gr_name);
+}
+
+static int
+print_acl(char *path, acl_type_t type, int hflag, int iflag, int nflag,
+    int qflag, int vflag, int sflag)
+{
+	struct stat	sb;
+	acl_t	acl;
+	char	*acl_text;
+	int	error, flags = 0, ret;
+
+	if (hflag)
+		error = lstat(path, &sb);
+	else
+		error = stat(path, &sb);
+	if (error == -1) {
+		warn("%s: stat() failed", path);
+		return(-1);
+	}
+
+	if (hflag)
+		ret = lpathconf(path, _PC_ACL_NFS4);
+	else
+		ret = pathconf(path, _PC_ACL_NFS4);
+	if (ret > 0) {
+		if (type == ACL_TYPE_DEFAULT) {
+			warnx("%s: there are no default entries in NFSv4 ACLs",
+			    path);
+			return (-1);
+		}
+		type = ACL_TYPE_NFS4;
+	} else if (ret < 0 && errno != EINVAL) {
+		warn("%s: pathconf(..., _PC_ACL_NFS4) failed", path);
+		return (-1);
+	}
+
+	if (hflag)
+		acl = acl_get_link_np(path, type);
+	else
+		acl = acl_get_file(path, type);
+
+	if (!acl && errno != EOPNOTSUPP) {
+		warn("%s", path);
+		return(-1);
+	}
+
+	if (sflag) {
+		int trivial;
+
+		/*
+		 * With the -s flag, we shouldn't synthesize a trivial ACL if
+		 * they aren't supported as we do below.
+		 */
+		if (!acl)
+			return(0);
+
+		/*
+		 * We also shouldn't render anything for this path if it's a
+		 * trivial ACL.  If we error out, we'll issue a warning but
+		 * proceed with this file to err on the side of caution.
+		 */
+		error = acl_is_trivial_np(acl, &trivial);
+		if (error != 0) {
+			warn("%s: acl_is_trivial_np failed", path);
+		} else if (trivial) {
+			(void)acl_free(acl);
+			return(0);
+		}
+	}
+
+	if (more_than_one)
+		printf("\n");
+	else
+		more_than_one++;
+	if (!qflag)
+		printf("# file: %s\n# owner: %s\n# group: %s\n", path,
+		    getuname(sb.st_uid), getgname(sb.st_gid));
+
+	if (!acl) {
+		if (type == ACL_TYPE_DEFAULT)
+			return(0);
+		acl = acl_from_mode_np(sb.st_mode);
+		if (!acl) {
+			warn("%s: acl_from_mode() failed", path);
+			return(-1);
+		}
+	}
+
+	if (iflag)
+		flags |= ACL_TEXT_APPEND_ID;
+
+	if (nflag)
+		flags |= ACL_TEXT_NUMERIC_IDS;
+
+	if (vflag)
+		flags |= ACL_TEXT_VERBOSE;
+
+	acl_text = acl_to_text_np(acl, 0, flags);
+	if (!acl_text) {
+		warn("%s: acl_to_text_np() failed", path);
+		(void)acl_free(acl);
+		return(-1);
+	}
+
+	printf("%s", acl_text);
+
+	(void)acl_free(acl);
+	(void)acl_free(acl_text);
+
+	return(0);
+}
+
+static int
+print_acl_from_stdin(acl_type_t type, int hflag, int iflag, int nflag,
+    int qflag, int vflag, int sflag)
+{
+	char	*p, pathname[PATH_MAX];
+	int	carried_error = 0;
+
+	while (fgets(pathname, (int)sizeof(pathname), stdin)) {
+		if ((p = strchr(pathname, '\n')) != NULL)
+			*p = '\0';
+		if (print_acl(pathname, type, hflag, iflag, nflag,
+		    qflag, vflag, sflag) == -1) {
+			carried_error = -1;
+		}
+	}
+
+	return(carried_error);
+}
+
+int
+main(int argc, char *argv[])
+{
+	acl_type_t	type = ACL_TYPE_ACCESS;
+	int	carried_error = 0;
+	int	ch, error, i;
+	int	hflag, iflag, qflag, nflag, sflag, vflag;
+
+	hflag = 0;
+	iflag = 0;
+	qflag = 0;
+	nflag = 0;
+	sflag = 0;
+	vflag = 0;
+	while ((ch = getopt_long(argc, argv, "+dhinqsv", long_options,
+	    NULL)) != -1)
+		switch(ch) {
+		case 'd':
+			type = ACL_TYPE_DEFAULT;
+			break;
+		case 'h':
+			hflag = 1;
+			break;
+		case 'i':
+			iflag = 1;
+			break;
+		case 'n':
+			nflag = 1;
+			break;
+		case 'q':
+			qflag = 1;
+			break;
+		case 's':
+			sflag = 1;
+			break;
+		case 'v':
+			vflag = 1;
+			break;
+		default:
+			usage();
+			return(-1);
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0) {
+		error = print_acl_from_stdin(type, hflag, iflag, nflag,
+		    qflag, vflag, sflag);
+		return(error ? 1 : 0);
+	}
+
+	for (i = 0; i < argc; i++) {
+		if (!strcmp(argv[i], "-")) {
+			error = print_acl_from_stdin(type, hflag, iflag, nflag,
+			    qflag, vflag, sflag);
+			if (error == -1)
+				carried_error = -1;
+		} else {
+			error = print_acl(argv[i], type, hflag, iflag, nflag,
+			    qflag, vflag, sflag);
+			if (error == -1)
+				carried_error = -1;
+		}
+	}
+
+	return(carried_error ? 1 : 0);
+}