From 325081b9eb2035f8f025255206889208f330b590 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 18 May 2020 17:41:25 -0300 Subject: string: Add strerrorname_np and strerrordesc_np 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 Reviewed-by: Carlos O'Donell --- string/strerrordesc_np.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 string/strerrordesc_np.c (limited to 'string/strerrordesc_np.c') diff --git a/string/strerrordesc_np.c b/string/strerrordesc_np.c new file mode 100644 index 0000000000..cdaf3a7f44 --- /dev/null +++ b/string/strerrordesc_np.c @@ -0,0 +1,26 @@ +/* Return string describing error number. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include + +const char * +__strerrordesc_np (int errnum) +{ + return __get_errlist (errnum); +} +weak_alias (__strerrordesc_np, strerrordesc_np) -- cgit 1.4.1