introduce and use setfscreatecon_or_die

(patch by Yuichi Nakamura <ynakam@hitachisoft.jp>)
runcon: *yet another* fix for vda's brainfart :(

7 files changed, 16 insertions, 13 deletions

diff --git a/coreutils/install.c b/coreutils/install.c
index 1f65407..a58a23b 100644
--- a/coreutils/install.c
+++ b/coreutils/install.c
@@ -110,9 +110,7 @@ int install_main(int argc, char **argv)
 	}
 	if (flags & OPT_SET_SECURITY_CONTEXT) {
 		selinux_or_die();
-		if (setfscreatecon(scontext) < 0) {
-			bb_error_msg_and_die("setfscreatecon(%s)", scontext); // perror?
-		}
+		setfscreatecon_or_die(scontext);
 		use_default_selinux_context = 0;
 		copy_flags |= FILEUTILS_SET_SECURITY_CONTEXT;
 	}
diff --git a/coreutils/libcoreutils/getopt_mk_fifo_nod.c b/coreutils/libcoreutils/getopt_mk_fifo_nod.c
index 2e0c274..32fa9be 100644
--- a/coreutils/libcoreutils/getopt_mk_fifo_nod.c
+++ b/coreutils/libcoreutils/getopt_mk_fifo_nod.c
@@ -43,10 +43,7 @@ mode_t getopt_mk_fifo_nod(int argc, char **argv)
 #if ENABLE_SELINUX
 	if (opt & 2) {
 		selinux_or_die();
-		if (setfscreatecon(scontext)) {
-			bb_error_msg_and_die("cannot set default file creation context "
-					      "to %s", scontext);
-		}
+		setfscreatecon_or_die(scontext);
 	}
 #endif
 
diff --git a/coreutils/mkdir.c b/coreutils/mkdir.c
index 93ded1d..690e4ab 100644
--- a/coreutils/mkdir.c
+++ b/coreutils/mkdir.c
@@ -62,10 +62,7 @@ int mkdir_main(int argc, char **argv)
 #if ENABLE_SELINUX
 	if (opt & 4) {
 		selinux_or_die();
-		if (setfscreatecon(scontext)) {
-			bb_error_msg_and_die("cannot set default file creation context "
-					      "to %s", scontext);
-		}
+		setfscreatecon_or_die(scontext);
 	}
 #endif
 
diff --git a/include/libbb.h b/include/libbb.h
index 69652b6..401fce4 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -601,6 +601,7 @@ extern void renew_current_security_context(void);
 extern void set_current_security_context(security_context_t sid);
 extern context_t set_security_context_component(security_context_t cur_context,
 						char *user, char *role, char *type, char *range);
+extern void setfscreatecon_or_die(security_context_t scontext);
 #endif
 extern void selinux_or_die(void);
 extern int restricted_shell(const char *shell);
diff --git a/libbb/copy_file.c b/libbb/copy_file.c
index 6391824..07564af 100644
--- a/libbb/copy_file.c
+++ b/libbb/copy_file.c
@@ -74,7 +74,7 @@ int copy_file(const char *source, const char *dest, int flags)
 			}
 		} else {
 			if (errno == ENOTSUP || errno == ENODATA) {
-				setfscreatecon(NULL);
+				setfscreatecon_or_die(NULL);
 			} else {
 				bb_perror_msg("cannot lgetfilecon %s", source);
 				return -1;
diff --git a/libbb/selinux_common.c b/libbb/selinux_common.c
index 70d63a4..d506f06 100644
--- a/libbb/selinux_common.c
+++ b/libbb/selinux_common.c
@@ -28,3 +28,13 @@ error:
 	context_free(con);
 	return NULL;
 }
+
+void setfscreatecon_or_die(security_context_t scontext)
+{
+	if (setfscreatecon(scontext) < 0) {
+		/* Can be NULL. All known printf implementations
+		 * display "(null)", "<null>" etc */
+		bb_perror_msg_and_die("cannot set default "
+				"file creation context to %s", scontext);
+	}
+}
diff --git a/selinux/runcon.c b/selinux/runcon.c
index 24e436f..8888ccc 100644
--- a/selinux/runcon.c
+++ b/selinux/runcon.c
@@ -132,6 +132,6 @@ int runcon_main(int argc, char *argv[])
 
 	execvp(argv[0], argv);
 
-	bb_perror_msg_and_die("cannot execute '%s'", command);
+	bb_perror_msg_and_die("cannot execute '%s'", argv[0]);
 	return 1;
 }