summaryrefslogtreecommitdiff
path: root/lib9/errstr-posix.c
blob: eacc77548d6bb08c7d51c81f24810f3862adf8d9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
#include "lib9.h"

#include <errno.h>

static char errstring[ERRMAX];

enum
{
	Magic = 0xffffff
};

void
werrstr(char *fmt, ...)
{
	va_list arg;

	va_start(arg, fmt);
	vseprint(errstring, errstring+sizeof(errstring), fmt, arg);
	va_end(arg);
	errno = Magic;
}

void
oserrstr(char *buf, uint nerr)
{
	utfecpy(buf, buf+nerr, strerror(errno));
}

int
errstr(char *buf, uint nerr)
{
	if(errno == Magic)
		utfecpy(buf, buf+nerr, errstring);
	else
		oserrstr(buf, nerr);
	return 1;
}