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98 lines
2.9 KiB
98 lines
2.9 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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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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*/
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#include <errno.h>
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#ifdef HAS_KCMP
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#include <linux/kcmp.h>
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#include <sys/syscall.h>
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#endif
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include <sys/sem.h>
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#include <sys/shm.h>
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#include <unistd.h>
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#include <gtest/gtest.h>
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#ifdef HAS_KCMP
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int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
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return syscall(SYS_kcmp, pid1, pid2, type, 0, idx1, idx2);
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}
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#endif
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int msgctl(int id, int cmd, msqid_ds* buf) {
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#if !defined(__LP64__) || defined(__mips__)
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// Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
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// Mips64 is an exception to this, it requires the flag.
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cmd |= IPC_64;
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#endif
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#if defined(SYS_msgctl)
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return syscall(SYS_msgctl, id, cmd, buf);
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#else
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return syscall(SYS_ipc, MSGCTL, id, cmd, 0, buf, 0);
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#endif
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}
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int semctl(int id, int num, int cmd, semid_ds* buf) {
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#if !defined(__LP64__) || defined(__mips__)
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// Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
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// Mips64 is an exception to this, it requires the flag.
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cmd |= IPC_64;
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#endif
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#if defined(SYS_msgctl)
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return syscall(SYS_semctl, id, num, cmd, buf);
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#else
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return syscall(SYS_ipc, SEMCTL, id, num, cmd, buf, 0);
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#endif
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}
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int shmctl(int id, int cmd, shmid_ds* buf) {
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#if !defined(__LP64__) || defined(__mips__)
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// Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
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// Mips64 is an exception to this, it requires the flag.
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cmd |= IPC_64;
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#endif
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#if defined(SYS_shmctl)
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return syscall(SYS_shmctl, id, cmd, buf);
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#else
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return syscall(SYS_ipc, SHMCTL, id, cmd, 0, buf, 0);
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#endif
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}
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TEST(kernel_config, NOT_CONFIG_SYSVIPC) {
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#ifdef HAS_KCMP
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pid_t pid = getpid();
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int ret = kcmp(pid, pid, KCMP_SYSVSEM, 0, 0);
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int error = (ret == -1) ? (errno == ENOSYS) ? EOPNOTSUPP : errno : 0;
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EXPECT_EQ(-1, kcmp(pid, pid, KCMP_SYSVSEM, 0, 0));
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EXPECT_EQ(EOPNOTSUPP, error);
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#endif
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EXPECT_EQ(-1, access("/proc/sysvipc", R_OK));
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EXPECT_EQ(-1, access("/proc/sysvipc/msg", F_OK));
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EXPECT_EQ(-1, msgctl(-1, IPC_STAT, nullptr));
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EXPECT_EQ(ENOSYS, errno);
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EXPECT_EQ(-1, access("/proc/sysvipc/sem", F_OK));
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EXPECT_EQ(-1, semctl(-1, 0, IPC_STAT, nullptr));
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EXPECT_EQ(ENOSYS, errno);
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EXPECT_EQ(-1, access("/proc/sysvipc/shm", F_OK));
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EXPECT_EQ(-1, shmctl(-1, IPC_STAT, nullptr));
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EXPECT_EQ(ENOSYS, errno);
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}
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