6621e780c9
The string "" is of type '(const char *)', so add a cast over to '(char *)' to clean up source code. Signed-off-by: Florian La Roche <Florian.LaRoche@gmail.com>
65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
/*
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* Copyright (c) 2022 Meta
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include <string.h>
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#include <zephyr/sys/util.h>
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/*
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* See scripts/build/gen_strerror_table.py
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*
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* #define sys_nerr N
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* const char *const sys_errlist[sys_nerr];
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* const uint8_t sys_errlen[sys_nerr];
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*/
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#include "libc/minimal/strerror_table.h"
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/*
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* See https://pubs.opengroup.org/onlinepubs/9699919799/functions/strerror.html
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*/
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char *strerror(int errnum)
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{
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if (IS_ENABLED(CONFIG_MINIMAL_LIBC_STRING_ERROR_TABLE) &&
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errnum >= 0 && errnum < sys_nerr) {
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return (char *)sys_errlist[errnum];
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}
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return (char *) "";
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}
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/*
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* See
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* https://pubs.opengroup.org/onlinepubs/9699919799/functions/strerror_r.html
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*/
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int strerror_r(int errnum, char *strerrbuf, size_t buflen)
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{
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const char *msg;
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size_t msg_len;
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if (errnum >= 0 && errnum < sys_nerr) {
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if (IS_ENABLED(CONFIG_MINIMAL_LIBC_STRING_ERROR_TABLE)) {
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msg = sys_errlist[errnum];
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msg_len = sys_errlen[errnum];
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} else {
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msg = "";
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msg_len = 1;
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}
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if (buflen < msg_len) {
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return ERANGE;
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}
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strncpy(strerrbuf, msg, msg_len);
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}
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if (errnum < 0 || errnum >= sys_nerr) {
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return EINVAL;
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}
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return 0;
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}
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