Allow unlinkat() in the seccomp2 sandbox

Closes ticket 33346.

diff --git a/changes/ticket33346 b/changes/ticket33346
new file mode 100644 (file)
index 0000000..acbbae5
--- /dev/null
+++ b/changes/ticket33346
@@ -0,0 +1,3 @@
+  o Minor features (linux seccomp2 sandbox):
+    - Permit the unlinkat() syscall, which some Libc implementations
+      use to implement unlink(). Closes ticket 33346.

diff --git a/src/lib/sandbox/sandbox.c b/src/lib/sandbox/sandbox.c
index 8f577b066048e22fda3a54160e41d6ebbc95a0fc..63d3e0b9a3a530fa5ab9c2b80f22e72641a85c6d 100644 (file)
--- a/src/lib/sandbox/sandbox.c
+++ b/src/lib/sandbox/sandbox.c
@@ -269,6 +269,9 @@ static int filter_nopar_gen[] = {
     SCMP_SYS(recvfrom),
     SCMP_SYS(sendto),
     SCMP_SYS(unlink),
+#ifdef __NR_unlinkat
+    SCMP_SYS(unlinkat),
+#endif
     SCMP_SYS(poll)
 };