If we encounter a read error, the user may want to report it
by looking at errno. However, our close() call may clobber
errno, leading to confusing results. Let's save and restore
it in the error case.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
{
int fd;
ssize_t len;
+ int saved_errno;
fd = open(path, O_RDONLY);
if (fd < 0)
return -1;
len = strbuf_read(sb, fd, hint);
+ saved_errno = errno;
close(fd);
- if (len < 0)
+ if (len < 0) {
+ errno = saved_errno;
return -1;
+ }
return len;
}