forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
1.0 KiB
27 lines
1.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
#undef _GNU_SOURCE |
|
#include <string.h> |
|
#include <stdio.h> |
|
#include <linux/string.h> |
|
|
|
/* |
|
* The tools so far have been using the strerror_r() GNU variant, that returns |
|
* a string, be it the buffer passed or something else. |
|
* |
|
* But that, besides being tricky in cases where we expect that the function |
|
* using strerror_r() returns the error formatted in a provided buffer (we have |
|
* to check if it returned something else and copy that instead), breaks the |
|
* build on systems not using glibc, like Alpine Linux, where musl libc is |
|
* used. |
|
* |
|
* So, introduce yet another wrapper, str_error_r(), that has the GNU |
|
* interface, but uses the portable XSI variant of strerror_r(), so that users |
|
* rest asured that the provided buffer is used and it is what is returned. |
|
*/ |
|
char *str_error_r(int errnum, char *buf, size_t buflen) |
|
{ |
|
int err = strerror_r(errnum, buf, buflen); |
|
if (err) |
|
snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, [buf], %zd)=%d", errnum, buflen, err); |
|
return buf; |
|
}
|
|
|