ioctl.c revision 03d2f54d2886c4cb1bc4ff6d48125bd788658361 
1/* Tests for ioctl wrappers.
2   More complicated ones than just trivial ones in scalar_ioctl. */
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <strings.h>
7#include <unistd.h>
8#include <net/if.h>
9#include <sys/socket.h>
10#include <sys/sockio.h>
11
12/* sockio */
13__attribute__((noinline))
14static int test_SIOCGIFCONF(void)
15{
16   int fd = socket(AF_INET, SOCK_DGRAM, 0);
17   if (fd < 0)
18      perror("socket");
19
20   int n_ifs;
21   if (ioctl(fd, SIOCGIFNUM, &n_ifs) < 0)
22      perror("ioctl(SIOCGIFNUM)");
23
24   struct ifconf ifc;
25   ifc.ifc_len = (n_ifs + 1) * sizeof(struct ifreq);
26   ifc.ifc_buf = malloc((n_ifs + 1) * sizeof(struct ifreq));
27   if (ifc.ifc_buf == NULL)
28      perror("malloc");
29
30   if (ioctl(fd, SIOCGIFCONF, &ifc) < 0)
31      perror("ioctl(SIOCGIFCONF)");
32
33   /* Check definedness of ifc attributes ... */
34   int x = 0;
35   if (ifc.ifc_len != 0) x = -1; else x = -2;
36   if (ifc.ifc_req != NULL) x = -3; else x = -4;
37   if (strcmp(ifc.ifc_req[0].ifr_name, "") != 0) x = -5; else x = -6;
38   /* ... and now one which is not defined. */
39   if (strcmp(ifc.ifc_req[n_ifs].ifr_name, "") != 0) x = -7; else x = -8;
40
41   free(ifc.ifc_buf);
42   close(fd);
43   return x;
44}
45
46__attribute__((noinline))
47static int test_SIOCGLIFCONF(void)
48{
49   int fd = socket(AF_INET, SOCK_DGRAM, 0);
50   if (fd < 0)
51      perror("socket");
52
53   struct lifnum lifn;
54   lifn.lifn_family = AF_INET;
55   lifn.lifn_flags = 0;
56   if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0)
57      perror("ioctl(SIOCGLIFNUM)");
58
59   struct lifconf lifc;
60   lifc.lifc_family = AF_INET;
61   lifc.lifc_flags = 0;
62   lifc.lifc_len = (lifn.lifn_count + 1) * sizeof(struct lifreq);
63   lifc.lifc_buf = malloc((lifn.lifn_count + 1) * sizeof(struct lifreq));
64   if (lifc.lifc_buf == NULL)
65      perror("malloc");
66
67   if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0)
68      perror("ioctl(SIOCGLIFCONF)");
69
70   /* Check definedness of lifc attributes ... */
71   int x = 0;
72   if (lifc.lifc_len != 0) x = -1; else x = -2;
73   if (lifc.lifc_req != NULL) x = -3; else x = -4;
74   if (strcmp(lifc.lifc_req[0].lifr_name, "") != 0) x = -5; else x = -6;
75   /* ... and now one which is not defined. */
76   if (strcmp(lifc.lifc_req[lifn.lifn_count].lifr_name, "") != 0)
77      x = -7; else x = -8;
78
79   free(lifc.lifc_buf);
80   close(fd);
81   return x;
82}
83
84int main(void)
85{
86   /* sockio */
87   test_SIOCGIFCONF();
88   test_SIOCGLIFCONF();
89
90   return 0;
91}
92