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For setreuid and setresuid syscalls, -1 means to set the current uid/euid/gid/egid value, to be more convenient for programming. However, for other syscalls where we pass only one argument, there's no justification to specify -1. This behavior is identical to how Linux handles the value -1, and is influenced by the fact that the manual pages for the group of one argument syscalls that handle ID operations is ambiguous about this topic.
28 lines
538 B
C++
28 lines
538 B
C++
/*
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* Copyright (c) 2021, 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 <unistd.h>
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TEST_CASE(test_invalid_set_uid_parameters)
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{
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auto res = setuid(-1);
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EXPECT_EQ(res, -1);
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EXPECT_EQ(errno, EINVAL);
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res = seteuid(-1);
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EXPECT_EQ(res, -1);
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EXPECT_EQ(errno, EINVAL);
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res = setgid(-1);
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EXPECT_EQ(res, -1);
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EXPECT_EQ(errno, EINVAL);
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res = setegid(-1);
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EXPECT_EQ(res, -1);
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EXPECT_EQ(errno, EINVAL);
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}
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