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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/socket.h>
#include "selinux_internal.h"
#include "policy.h"
#ifndef SO_PEERSEC
#define SO_PEERSEC 31
#endif
int getpeercon_raw(int fd, security_context_t * context)
{
char *buf;
socklen_t size;
ssize_t ret;
size = INITCONTEXTLEN + 1;
buf = malloc(size);
if (!buf)
return -1;
memset(buf, 0, size);
ret = getsockopt(fd, SOL_SOCKET, SO_PEERSEC, buf, &size);
if (ret < 0 && errno == ERANGE) {
char *newbuf;
newbuf = realloc(buf, size);
if (!newbuf)
goto out;
buf = newbuf;
memset(buf, 0, size);
ret = getsockopt(fd, SOL_SOCKET, SO_PEERSEC, buf, &size);
}
out:
if (ret < 0)
free(buf);
else
*context = buf;
return ret;
}
hidden_def(getpeercon_raw)
int getpeercon(int fd, security_context_t * context)
{
int ret;
security_context_t rcontext;
ret = getpeercon_raw(fd, &rcontext);
if (!ret) {
ret = selinux_raw_to_trans_context(rcontext, context);
freecon(rcontext);
}
return ret;
}
|
