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authorLasse Collin <lasse.collin@tukaani.org>2015-03-31 22:19:34 +0300
committerLasse Collin <lasse.collin@tukaani.org>2015-03-31 22:19:34 +0300
commit1238381143a9a7ce84839c2582ccd56ff750a440 (patch)
tree83f309268f623840648babfdf2e64a7f5cce5167 /src/xz/private.h
parentFix bugs and otherwise improve ax_check_capsicum.m4. (diff)
downloadxz-1238381143a9a7ce84839c2582ccd56ff750a440.tar.xz
xz: Add support for sandboxing with Capsicum.
The sandboxing is used conditionally as described in main.c. This isn't optimal but it was much easier to implement than a full sandboxing solution and it still covers the most common use cases where xz is writing to standard output. This should have practically no effect on performance even with small files as fork() isn't needed. C and locale libraries can open files as needed. This has been fine in the past, but it's a problem with things like Capsicum. io_sandbox_enter() tries to ensure that various locale-related files have been loaded before cap_enter() is called, but it's possible that there are other similar problems which haven't been seen yet. Currently Capsicum is available on FreeBSD 10 and later and there is a port to Linux too. Thanks to Loganaden Velvindron for help.
Diffstat (limited to 'src/xz/private.h')
-rw-r--r--src/xz/private.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/xz/private.h b/src/xz/private.h
index 4acfa8dc..b84cbbb1 100644
--- a/src/xz/private.h
+++ b/src/xz/private.h
@@ -45,6 +45,10 @@
# define STDERR_FILENO (fileno(stderr))
#endif
+#ifdef HAVE_CAPSICUM
+# define ENABLE_SANDBOX 1
+#endif
+
#include "main.h"
#include "mytime.h"
#include "coder.h"