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Linux/tools/testing/selftests/net/socket.c

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  1 #include <stdio.h>
  2 #include <errno.h>
  3 #include <unistd.h>
  4 #include <string.h>
  5 #include <sys/types.h>
  6 #include <sys/socket.h>
  7 #include <netinet/in.h>
  8 
  9 struct socket_testcase {
 10         int     domain;
 11         int     type;
 12         int     protocol;
 13 
 14         /* 0    = valid file descriptor
 15          * -foo = error foo
 16          */
 17         int     expect;
 18 
 19         /* If non-zero, accept EAFNOSUPPORT to handle the case
 20          * of the protocol not being configured into the kernel.
 21          */
 22         int     nosupport_ok;
 23 };
 24 
 25 static struct socket_testcase tests[] = {
 26         { AF_MAX,  0,           0,           -EAFNOSUPPORT,    0 },
 27         { AF_INET, SOCK_STREAM, IPPROTO_TCP, 0,                1  },
 28         { AF_INET, SOCK_DGRAM,  IPPROTO_TCP, -EPROTONOSUPPORT, 1  },
 29         { AF_INET, SOCK_DGRAM,  IPPROTO_UDP, 0,                1  },
 30         { AF_INET, SOCK_STREAM, IPPROTO_UDP, -EPROTONOSUPPORT, 1  },
 31 };
 32 
 33 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 34 #define ERR_STRING_SZ   64
 35 
 36 static int run_tests(void)
 37 {
 38         char err_string1[ERR_STRING_SZ];
 39         char err_string2[ERR_STRING_SZ];
 40         int i, err;
 41 
 42         err = 0;
 43         for (i = 0; i < ARRAY_SIZE(tests); i++) {
 44                 struct socket_testcase *s = &tests[i];
 45                 int fd;
 46 
 47                 fd = socket(s->domain, s->type, s->protocol);
 48                 if (fd < 0) {
 49                         if (s->nosupport_ok &&
 50                             errno == EAFNOSUPPORT)
 51                                 continue;
 52 
 53                         if (s->expect < 0 &&
 54                             errno == -s->expect)
 55                                 continue;
 56 
 57                         strerror_r(-s->expect, err_string1, ERR_STRING_SZ);
 58                         strerror_r(errno, err_string2, ERR_STRING_SZ);
 59 
 60                         fprintf(stderr, "socket(%d, %d, %d) expected "
 61                                 "err (%s) got (%s)\n",
 62                                 s->domain, s->type, s->protocol,
 63                                 err_string1, err_string2);
 64 
 65                         err = -1;
 66                         break;
 67                 } else {
 68                         close(fd);
 69 
 70                         if (s->expect < 0) {
 71                                 strerror_r(errno, err_string1, ERR_STRING_SZ);
 72 
 73                                 fprintf(stderr, "socket(%d, %d, %d) expected "
 74                                         "success got err (%s)\n",
 75                                         s->domain, s->type, s->protocol,
 76                                         err_string1);
 77 
 78                                 err = -1;
 79                                 break;
 80                         }
 81                 }
 82         }
 83 
 84         return err;
 85 }
 86 
 87 int main(void)
 88 {
 89         int err = run_tests();
 90 
 91         return err;
 92 }
 93 

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