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f13d260190
The symbol is deprecated by strerror since its usage imposes some issues such as copy relocations. Its internal name is also changed to _sys_errlist_internal to avoid static linking usage. The compat code is also refactored by removing the over enginered errlist-compat.c generation from manual entried and extra comment token in linker script file. It disantangle the code generation from manual and simplify both Linux and Hurd compat code. The definitions from errlist.c are moved to errlist.h and a new test is added to avoid a new errno entry without an associated one in manual. Checked on x86_64-linux-gnu and i686-linux-gnu. I also run a check-abi on all affected platforms. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* Copyright (C) 1991-2020 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 <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/param.h>
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/* Fill buf with a string describing the errno code in ERRNUM. */
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int
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__xpg_strerror_r (int errnum, char *buf, size_t buflen)
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{
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const char *estr = __strerror_r (errnum, buf, buflen);
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/* We know that __strerror_r returns buf (with a dynamically computed
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string) if errnum is invalid, otherwise it returns a string whose
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storage has indefinite extent. */
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if (estr == buf)
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return EINVAL;
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else
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{
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size_t estrlen = strlen (estr);
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/* Terminate the string in any case. */
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if (buflen > 0)
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*((char *) __mempcpy (buf, estr, MIN (buflen - 1, estrlen))) = '\0';
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return buflen <= estrlen ? ERANGE : 0;
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}
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}
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