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