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Diffstat (limited to 'src/string/strerror/strerror.c')
-rw-r--r-- | src/string/strerror/strerror.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/string/strerror/strerror.c b/src/string/strerror/strerror.c new file mode 100644 index 0000000..315e40d --- /dev/null +++ b/src/string/strerror/strerror.c @@ -0,0 +1,44 @@ +/** + * 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 <http://www.gnu.org/licenses/>. + */ +#include <string.h> + + + +/** + * Return a textual representation of an error code. + * This error code must from `errno`. + * + * This implementation of `strerror` cannot fail. however + * POSIX specifies that it can fail, any may only set `errno` + * if it does fail. You should therefore, set `errno` to + * zero before calling this function, and inspect `errno` + * when it returns, as there is no reserved return value + * that indicates and error. + * + * The returned value must not be modified or freed. + * + * As a slibc-specific modification, this function is MT-Safe. + * + * @param errnum The error code. + * @return A description of the error. + */ +char* strerror(int errnum) +{ + return strerror_l(errnum, 0 /* TODO CURRENT_LOCALE, not defined */); +} + |