[PATCH] xkb: check permissions on XKM_OUTPUT_DIR

[Nirbheek Chauhan]

Checking just for root is insufficient since that does not guarantee write/read
permissions in XKM_OUTPUT_DIR (for example with sandbox).

Check if we can write a file, as well as read it later. Otherwise, invoke the
fallback to /tmp

Signed-off-by: Nirbheek Chauhan <nirbheek at gentoo.org>
---
 xkb/ddxLoad.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/xkb/ddxLoad.c b/xkb/ddxLoad.c
index 6954dd1..ba8d50b 100644
--- a/xkb/ddxLoad.c
+++ b/xkb/ddxLoad.c
@@ -158,10 +158,9 @@ OutputDirectory(
     size_t size)
 {
 #ifndef WIN32
-    if (getuid() == 0 && (strlen(XKM_OUTPUT_DIR) < size))
+    /* Can we write an xkm and then open it too? */
+    if (access(XKM_OUTPUT_DIR, W_OK | X_OK) == 0 && (strlen(XKM_OUTPUT_DIR) < size))
     {
-	/* if server running as root it *may* be able to write */
-	/* FIXME: check whether directory is writable at all */
 	(void) strcpy (outdir, XKM_OUTPUT_DIR);
     } else
 #else
-- 
1.6.5.rc1