1#include "stdio_impl.h"
 2#include <string.h>
 3#include <signal.h>
 4#include <errno.h>
 5
 6void psignal(int sig, const char *msg)
 7{
 8	FILE *f = stderr;
 9	char *s = strsignal(sig);
10
11	FLOCK(f);
12
13	/* Save stderr's orientation and encoding rule, since psignal is not
14	 * permitted to change them. Save errno and restore it if there is no
15	 * error since fprintf might change it even on success but psignal is
16	 * not permitted to do so. */
17	void *old_locale = f->locale;
18	int old_mode = f->mode;
19	int old_errno = errno;
20
21	if (fprintf(f, "%s%s%s\n", msg?msg:"", msg?": ":"", s)>=0)
22		errno = old_errno;
23	f->mode = old_mode;
24	f->locale = old_locale;
25
26	FUNLOCK(f);
27}