commit f70cf9982ae3b0e57ca62612988478906707567f Author: Nick Mathewson nickm@torproject.org Date: Wed Apr 16 21:50:49 2014 -0400

Sandbox: permit O_NONBLOCK and O_NOCTTY for files we refuse

OpenSSL needs this, or RAND_poll() will kill the process.

Also, refuse with EACCESS, not errno==-1 (!). --- src/common/sandbox.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/common/sandbox.c b/src/common/sandbox.c index 0722751..7067a72 100644 --- a/src/common/sandbox.c +++ b/src/common/sandbox.c @@ -363,8 +363,8 @@ sb_open(scmp_filter_ctx ctx, sandbox_cfg_t *filter) } }

- rc = seccomp_rule_add_1(ctx, SCMP_ACT_ERRNO(-1), SCMP_SYS(open), - SCMP_CMP_MASKED(1, O_CLOEXEC, O_RDONLY)); + rc = seccomp_rule_add_1(ctx, SCMP_ACT_ERRNO(EACCES), SCMP_SYS(open), + SCMP_CMP_MASKED(1, O_CLOEXEC|O_NONBLOCK|O_NOCTTY, O_RDONLY)); if (rc != 0) { log_err(LD_BUG,"(Sandbox) failed to add open syscall, received libseccomp " "error %d", rc);