62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <sys/resource.h>
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#include <sys/time.h>
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#include "test/util/capability_util.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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TEST(RlimitTest, SetRlimitHigher) {
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SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_RESOURCE)));
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SKIP_IF(!IsRunningOnGvisor());
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struct rlimit rl = {};
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EXPECT_THAT(getrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds());
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// Even with CAP_SYS_RESOURCE, gVisor does not allow setting a higher rlimit.
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rl.rlim_max++;
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EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallFailsWithErrno(EPERM));
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}
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TEST(RlimitTest, UnprivilegedSetRlimit) {
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// Drop privileges if necessary.
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if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_RESOURCE))) {
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EXPECT_NO_ERRNO(SetCapability(CAP_SYS_RESOURCE, false));
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}
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struct rlimit rl = {};
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rl.rlim_cur = 1000;
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rl.rlim_max = 20000;
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EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds());
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struct rlimit rl2 = {};
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EXPECT_THAT(getrlimit(RLIMIT_NOFILE, &rl2), SyscallSucceeds());
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EXPECT_EQ(rl.rlim_cur, rl2.rlim_cur);
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EXPECT_EQ(rl.rlim_max, rl2.rlim_max);
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rl.rlim_max = 100000;
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EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallFailsWithErrno(EPERM));
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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