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1cd3826ad6
MAP_FILE is not in POSIX, and is simply in most LibCs as a "default" mode. Our own LibC defines it as 0, meaning "no flags". It is also not defined in some OS's, such as Haiku. Let's be more portable and not use the unnecessary flag.
40 lines
1023 B
C++
40 lines
1023 B
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/mman.h>
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static u8* private_ptr = nullptr;
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static void private_zero_length_inode_vmobject_sync_signal_handler(int)
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{
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auto rc = msync(private_ptr, 0x1000, MS_ASYNC);
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EXPECT(rc == 0);
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rc = munmap(private_ptr, 0x1000);
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EXPECT(rc == 0);
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exit(0);
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}
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TEST_CASE(private_zero_length_inode_vmobject_sync)
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{
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{
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struct sigaction new_action {
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{ private_zero_length_inode_vmobject_sync_signal_handler }, 0, 0
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};
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int rc = sigaction(SIGBUS, &new_action, nullptr);
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VERIFY(rc == 0);
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}
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int fd = open("/tmp/private_msync_test", O_RDWR | O_CREAT, 0644);
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VERIFY(fd >= 0);
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private_ptr = (u8*)mmap(nullptr, 0x1000, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
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EXPECT(private_ptr != MAP_FAILED);
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private_ptr[0] = 0x1;
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VERIFY_NOT_REACHED();
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}
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