69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Linux Test Project, 2020
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* Copyright (c) Wipro Technologies Ltd, 2002
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*/
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/*
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* This is a basic test for ioperm(2) system call.
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* It is intended to provide a limited exposure of the system call.
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*
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* Author: Subhab Biswas <subhabrata.biswas@wipro.com>
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*/
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#include <errno.h>
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#include <unistd.h>
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#include "tst_test.h"
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#if defined __i386__ || defined(__x86_64__)
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#include <sys/io.h>
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unsigned long io_addr;
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#define NUM_BYTES 3
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#ifndef IO_BITMAP_BITS
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#define IO_BITMAP_BITS 1024
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#endif
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static void verify_ioperm(void)
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{
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TEST(ioperm(io_addr, NUM_BYTES, 1));
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if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "ioperm() failed for port address "
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"%lu, errno=%d : %s", io_addr,
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TST_ERR, tst_strerrno(TST_ERR));
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} else {
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tst_res(TPASS, "ioperm() passed for port "
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"address %lu, returned %lu",
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io_addr, TST_RET);
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}
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}
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static void setup(void)
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{
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io_addr = IO_BITMAP_BITS - NUM_BYTES;
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}
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static void cleanup(void)
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{
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/*
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* Reset I/O privileges for the specified port.
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*/
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if ((ioperm(io_addr, NUM_BYTES, 0)) == -1)
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tst_brk(TBROK | TERRNO, "ioperm() cleanup failed");
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}
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static struct tst_test test = {
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.test_all = verify_ioperm,
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.needs_root = 1,
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/* ioperm() is restricted under kernel lockdown. */
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.skip_in_lockdown = 1,
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.setup = setup,
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.cleanup = cleanup,
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};
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#else
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TST_TEST_TCONF("LSB v1.3 does not specify ioperm() for this architecture. (only for i386 or x86_64)");
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#endif /* __i386_, __x86_64__*/
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