File: strerror.c

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/* public domain rewrite of strerror(3) */

extern int sys_nerr;
extern char *sys_errlist[];

static char msg[50];

char *
strerror(int error)
{
    if (error <= sys_nerr && error > 0) {
	return sys_errlist[error];
    }
    sprintf(msg, "Unknown error (%d)", error);
    return msg;
}