libtar: store SELinux file context in tar archives
* Using RedHat's "RHT.security.selinux=" tag in extended
tar header (type 'x')
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
Change-Id: I102e492e4fa5b8a08fae4d34eb36386862509b4d
diff --git a/libtar/append.c b/libtar/append.c
index 05024b9..3a8bfc6 100644
--- a/libtar/append.c
+++ b/libtar/append.c
@@ -90,6 +90,31 @@
#endif
th_set_path(t, (savename ? savename : realname));
+#ifdef HAVE_SELINUX
+ /* get selinux context */
+ if(t->options & TAR_STORE_SELINUX)
+ {
+ if(t->th_buf.selinux_context != NULL)
+ {
+ free(t->th_buf.selinux_context);
+ t->th_buf.selinux_context = NULL;
+ }
+
+ security_context_t selinux_context = NULL;
+ if(getfilecon(realname, &selinux_context) >= 0)
+ {
+ t->th_buf.selinux_context = strdup(selinux_context);
+ freecon(selinux_context);
+ }
+ else
+ {
+#ifdef DEBUG
+ perror("Failed to get selinux context");
+#endif
+ }
+ }
+#endif
+
/* check if it's a hardlink */
#ifdef DEBUG
puts(" tar_append_file(): checking inode cache for hardlink...");