From 2384ebfff4f0b7dc6c2cf3fc4b886e67a1769fc2 Mon Sep 17 00:00:00 2001
From: Jarkko Sakkinen <jarkko.sakkinen@iki.fi>
Date: Tue, 13 Dec 2011 11:52:08 +0200
Subject: [PATCH] libsmack: revert smack_new_label_from_self()

Reverted smack_new_label_from_self() back. Removed
smack_set_self_label as it is not needed.
---
 libsmack/libsmack.c  | 33 +++++++++++++--------------------
 libsmack/sys/smack.h | 15 ++++-----------
 utils/Makefile.am    |  5 +----
 utils/smackself.c    | 45 ---------------------------------------------
 4 files changed, 18 insertions(+), 80 deletions(-)
 delete mode 100644 utils/smackself.c

diff --git a/libsmack/libsmack.c b/libsmack/libsmack.c
index fafc8d7..1b96524 100644
--- a/libsmack/libsmack.c
+++ b/libsmack/libsmack.c
@@ -243,37 +243,30 @@ int smack_have_access(const char *subject, const char *object,
 	return buf[0] == '1';
 }
 
-ssize_t smack_get_self_label(char *buf, size_t count)
+int smack_new_label_from_self(char **label)
 {
+	char *result;
 	int fd;
 	int ret;
 
-	fd = open(SELF_LABEL_FILE, O_RDONLY);
-	if (fd < 0)
-		return -1;
-
-	ret = read(fd, buf, count);
-	close(fd);
-	if (ret < 0)
+	result = calloc(LABEL_LEN + 1, 1);
+	if (result == NULL)
 		return -1;
 
-	return count;
-}
-
-int smack_set_self_label(char *label)
-{
-	int fd;
-
-	fd = open(SELF_LABEL_FILE, O_WRONLY);
-	if (fd < 0)
+	fd = open(SELF_LABEL_FILE, O_RDONLY);
+	if (fd < 0) {
+		free(result);
 		return -1;
+	}
 
-	if (write(fd, label, strlen(label)) < 0) {
-		close(fd);
+	ret = read(fd, result, LABEL_LEN);
+	close(fd);
+	if (ret < 0) {
+		free(result);
 		return -1;
 	}
 
-	close(fd);
+	*label = result;
 	return 0;
 }
 
diff --git a/libsmack/sys/smack.h b/libsmack/sys/smack.h
index 2944ad0..797cccd 100644
--- a/libsmack/sys/smack.h
+++ b/libsmack/sys/smack.h
@@ -114,19 +114,12 @@ int smack_have_access(const char *subject, const char *object,
 
 /*!
   * Get the label that is associated with the callers process.
+  * Caller is responsible of freeing the returned label.
   *
-  * @param buf character buffer where label is read
-  * @param count length of the buffer
-  * @return label length on success and negative value on failure.
+  * @param label returned label
+  * @return 0 on success and negative value on failure.
   */
-ssize_t smack_get_self_label(char *buf, size_t count);
-
-/*!
- * Set the label that is associated with the callers process.
- *
- * @param label new label for callers process
- */
-int smack_set_self_label(char *label);
+int smack_new_label_from_self(char **label);
 
 /*!
   * Get the label that is associated with a peer on the other end of an
diff --git a/utils/Makefile.am b/utils/Makefile.am
index a54942e..17230e5 100644
--- a/utils/Makefile.am
+++ b/utils/Makefile.am
@@ -1,5 +1,5 @@
 instdir = ${bindir}
-bin_PROGRAMS = smackctl smackaccess smackself smackload smackcipso smackd chsmack
+bin_PROGRAMS = smackctl smackaccess smackload smackcipso smackd chsmack
 AM_CPPFLAGS = \
 	-I$(top_srcdir)/libsmack
 
@@ -9,9 +9,6 @@ smackctl_LDADD = ../libsmack/libsmack.la
 smackaccess_SOURCES = smackaccess.c
 smackaccess_LDADD = ../libsmack/libsmack.la
 
-smackself_SOURCES = smackself.c
-smackself_LDADD = ../libsmack/libsmack.la
-
 smackload_SOURCES = smackload.c common.c
 smackload_LDADD = ../libsmack/libsmack.la
 
diff --git a/utils/smackself.c b/utils/smackself.c
deleted file mode 100644
index 1d98d8b..0000000
--- a/utils/smackself.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * This file is part of libsmack
- *
- * Copyright (C) 2011 Intel Corporation
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- * Authors:
- * Brian McGillion <brian.mcgillion@intel.com>
- * Jarkko Sakkinen <jarkko.sakkinen@intel.com>
- */
-
-#include <sys/smack.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "common.h"
-
-int main(int argc, char **argv)
-{
-	char label[LABEL_LEN + 1];
-	int len;
-
-	len = smack_get_self_label(label, LABEL_LEN);
-	if (len < 0) {
-		perror("smack_get_self_label");
-		return EXIT_FAILURE;
-	}
-
-	label[len] = '\0';
-
-	printf("%s", label);
-	return EXIT_SUCCESS;
-}
-- 
2.7.4