From 5e57b83aae16d44318b9eed1b2cecd0591adc981 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Tue, 17 Nov 2015 03:30:10 +0100 Subject: m + typo + split (almost all) string/*.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/string/strerror_r_gnu.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/string/strerror_r_gnu.c (limited to 'src/string/strerror_r_gnu.c') diff --git a/src/string/strerror_r_gnu.c b/src/string/strerror_r_gnu.c new file mode 100644 index 0000000..3e8bfd4 --- /dev/null +++ b/src/string/strerror_r_gnu.c @@ -0,0 +1,45 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include +#include + + + +/** + * Reenterant variant of `strerror`. + * + * This is a GNU-specific extension. However the name + * is not part of the GNU specification, `strerror_r` should + * be used. It is defined to this function unless + * `(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE`. + * However it is not defined if _SLIBC_SOURCE is defined. + * + * @param errnum The error code. + * @param buf Buffer where the description shall be stored. + * @param buflen The allocation size of `buf`. + * @return `buf` on success, `NULL` on error. On error, `errno` + * is set to indicate the error. + * + * @throws ERANGE `buf` was too small to store the description. + */ +char* __gnu_strerror_r(int errnum, char* buf, size_t buflen) +{ + errno = __xsi_strerror_r(errnum, buf, buflen); + return errno ? NULL : buf; +} + -- cgit v1.2.3-70-g09d2