blob: 0cd4e43d104b240b4472047ac96922ffd0a4259b (
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
|
#include <unistd.h>
#include "open.h"
#include "e.h"
#include "load.h"
static int readall(int fd,void *x,long long xlen)
{
long long r;
while (xlen > 0) {
r = xlen;
if (r > 1048576) r = 1048576;
r = read(fd,x,r);
if (r == 0) errno = EPROTO;
if (r <= 0) {
if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK) continue;
return -1;
}
x += r;
xlen -= r;
}
return 0;
}
int load(const char *fn,void *x,long long xlen)
{
int fd;
int r;
fd = open_read(fn);
if (fd == -1) return -1;
r = readall(fd,x,xlen);
close(fd);
return r;
}
|