newlib-cygwin/newlib/libc/string/xpg_strerror_r.c

26 lines
475 B
C

/* POSIX variant of strerror_r. */
#undef __STRICT_ANSI__
#include <errno.h>
#include <string.h>
int
__xpg_strerror_r (int errnum,
char *buffer,
size_t n)
{
char *error;
int result = 0;
if (!n)
return ERANGE;
error = _strerror_r (_REENT, errnum, 1, &result);
if (strlen (error) >= n)
{
memcpy (buffer, error, n - 1);
buffer[n - 1] = '\0';
return ERANGE;
}
strcpy (buffer, error);
return (result || *error) ? result : EINVAL;
}