2022-05-03 12:18:04 +00:00
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/* Basic test for getauxval.
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2024-01-01 18:12:26 +00:00
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Copyright (C) 2022-2024 Free Software Foundation, Inc.
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2022-05-03 12:18:04 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <unistd.h>
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#include <stdio.h>
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#include <support/check.h>
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#include <sys/auxv.h>
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static int missing;
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static int mismatch;
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static void
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check_nonzero (unsigned long t, const char *s)
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{
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unsigned long v = getauxval (t);
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printf ("%s: %lu (0x%lx)\n", s, v, v);
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if (v == 0)
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missing++;
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}
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static void
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check_eq (unsigned long t, const char *s, unsigned long want)
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{
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unsigned long v = getauxval (t);
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printf ("%s: %lu want: %lu\n", s, v, want);
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if (v != want)
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mismatch++;
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}
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#define NZ(x) check_nonzero (x, #x)
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#define EQ(x, want) check_eq (x, #x, want)
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static int
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do_test (void)
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{
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/* These auxv entries should be non-zero on Linux. */
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NZ (AT_PHDR);
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NZ (AT_PHENT);
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NZ (AT_PHNUM);
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NZ (AT_PAGESZ);
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NZ (AT_ENTRY);
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NZ (AT_CLKTCK);
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NZ (AT_RANDOM);
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NZ (AT_EXECFN);
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if (missing)
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FAIL_EXIT1 ("Found %d missing auxv entries.\n", missing);
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/* Check against syscalls. */
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EQ (AT_UID, getuid ());
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EQ (AT_EUID, geteuid ());
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EQ (AT_GID, getgid ());
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EQ (AT_EGID, getegid ());
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if (mismatch)
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FAIL_EXIT1 ("Found %d mismatching auxv entries.\n", mismatch);
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return 0;
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}
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#include <support/test-driver.c>
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