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The strerrorname_np returns error number name (e.g. "EINVAL" for EINVAL) while strerrordesc_np returns string describing error number (e.g "Invalid argument" for EINVAL). Different than strerror, strerrordesc_np does not attempt to translate the return description, both functions return NULL for an invalid error number. They should be used instead of sys_errlist and sys_nerr, both are thread and async-signal safe. These functions are GNU extensions. Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, and s390x-linux-gnu. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/* Test strerrorname_np and strerrordesc_np.
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Copyright (C) 2020 Free Software Foundation, Inc.
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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 <string.h>
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#include <errno.h>
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#include <array_length.h>
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#include <support/support.h>
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#include <support/check.h>
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#define N_(name) name
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static const char *const errlist[] =
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{
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/* This file is auto-generated from errlist.def. */
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#include <errlist.h>
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};
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#define MSGSTR_T errname_t
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#define MSGSTR errname
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#define MSGIDX errnameidx
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#include <errlist-name.h>
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#undef MSGSTR
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#undef MSGIDX
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static int
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do_test (void)
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{
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TEST_VERIFY (strerrordesc_np (-1) == NULL);
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TEST_VERIFY (strerrordesc_np (array_length (errlist)) == NULL);
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for (size_t i = 0; i < array_length (errlist); i++)
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{
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if (errlist[i] == NULL)
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continue;
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TEST_COMPARE_STRING (strerrordesc_np (i), errlist[i]);
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}
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TEST_VERIFY (strerrorname_np (-1) == NULL);
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TEST_VERIFY (strerrorname_np (array_length (errlist)) == NULL);
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for (size_t i = 0; i < array_length (errlist); i++)
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{
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if (errlist[i] == NULL)
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continue;
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TEST_COMPARE_STRING (strerrorname_np (i), errname.str + errnameidx[i]);
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}
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return 0;
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}
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#include <support/test-driver.c>
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