From 45031cfb033d0c3941f48acb8c46861f756ab700 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Mon, 27 Jan 2014 21:43:11 +0100 Subject: [PATCH 01/28] seccomp: add mkdir() and fchmod() to the whitelist RH-Author: Paul Moore Message-id: <20140127214311.24608.57759.stgit@localhost> Patchwork-id: 56966 O-Subject: [RHEL7 qemu-kvm PATCH 1/2] seccomp: add mkdir() and fchmod() to the whitelist Bugzilla: 1026314 RH-Acked-by: Laszlo Ersek RH-Acked-by: Paolo Bonzini RH-Acked-by: Juan Quintela Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1026314 Brew: https://brewweb.devel.redhat.com/taskinfo?taskID=6956172 Upstream: upstream, see commit IDs Testing: tested, see BZ seccomp: add mkdir() and fchmod() to the whitelist The PulseAudio library attempts to do a mkdir(2) and fchmod(2) on "/run/user//pulse" which is currently blocked by the syscall filter; this patch adds the two missing syscalls to the whitelist. You can reproduce this problem with the following command: # qemu -monitor stdio -device intel-hda -device hda-duplex If watched under strace the following syscalls are shown: mkdir("/run/user/0/pulse", 0700) fchmod(11, 0700) [NOTE: 11 is the fd for /run/user/0/pulse] Reported-by: xuhan@redhat.com Signed-off-by: Paul Moore --- qemu-seccomp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Signed-off-by: Miroslav Rezanina --- qemu-seccomp.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/qemu-seccomp.c b/qemu-seccomp.c index fc48bdd..34a54e4 100644 --- a/qemu-seccomp.c +++ b/qemu-seccomp.c @@ -237,7 +237,9 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = { { SCMP_SYS(io_cancel), 241 }, { SCMP_SYS(io_setup), 241 }, { SCMP_SYS(io_destroy), 241 }, - { SCMP_SYS(arch_prctl), 240 } + { SCMP_SYS(arch_prctl), 240 }, + { SCMP_SYS(mkdir), 240 }, + { SCMP_SYS(fchmod), 240 } }; int seccomp_start(void) -- 1.7.1