57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Dan Kegel 2003
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* Copyright (c) 2022 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com>
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*/
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/*\
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* [Description]
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*
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* Verify that setegid() sets the effective UID of the calling process
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* correctly, and does not modify the saved GID and real GID.
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*/
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#include <pwd.h>
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#include "tst_test.h"
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static gid_t nobody_gid;
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static void setup(void)
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{
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struct passwd *nobody;
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nobody = SAFE_GETPWNAM("nobody");
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nobody_gid = nobody->pw_gid;
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}
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static void setegid_verify(void)
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{
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gid_t cur_rgid, cur_egid, cur_sgid;
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gid_t orig_rgid, orig_egid, orig_sgid;
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SAFE_GETRESGID(&orig_rgid, &orig_egid, &orig_sgid);
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tst_res(TINFO, "getresgid() reports rgid: %d, egid: %d, sgid: %d",
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orig_rgid, orig_egid, orig_sgid);
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tst_res(TINFO, "call setegid(nobody_gid %d)", nobody_gid);
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SAFE_SETEGID(nobody_gid);
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SAFE_GETRESGID(&cur_rgid, &cur_egid, &cur_sgid);
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tst_res(TINFO, "getresgid() reports rgid: %d, egid: %d, sgid: %d",
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cur_rgid, cur_egid, cur_sgid);
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TST_EXP_EQ_LU(nobody_gid, cur_egid);
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TST_EXP_EQ_LU(orig_rgid, cur_rgid);
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TST_EXP_EQ_LU(orig_sgid, cur_sgid);
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SAFE_SETEGID(orig_egid);
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SAFE_GETRESGID(&cur_rgid, &cur_egid, &orig_sgid);
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TST_EXP_EQ_LU(orig_egid, cur_egid);
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}
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static struct tst_test test = {
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.setup = setup,
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.test_all = setegid_verify,
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.needs_root = 1
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};
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