{
char *p = buf;
ssize_t total = 0;
- ssize_t loaded = 0;
while (count > 0) {
- loaded = xread(fd, p, count);
- if (loaded <= 0) {
- if (total)
- return total;
- else
- return loaded;
- }
+ ssize_t loaded = xread(fd, p, count);
+ if (loaded <= 0)
+ return total ? total : loaded;
count -= loaded;
p += loaded;
total += loaded;
return total;
}
-void read_or_die(int fd, void *buf, size_t count)
-{
- ssize_t loaded;
-
- if (!count)
- return;
- loaded = read_in_full(fd, buf, count);
- if (loaded == 0)
- die("unexpected end of file");
- else if (loaded < 0)
- die("read error (%s)", strerror(errno));
-}
-
int write_in_full(int fd, const void *buf, size_t count)
{
const char *p = buf;