Move getaddrinfo from 'posix' into 'nss'

getaddrinfo is an entry point for nss functionality.  This commit moves
it from 'sysdeps/posix' to 'nss', gets rid of the stub in 'posix', and
moves all associated tests as well.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 153 insertions, 0 deletions

diff --git a/nss/tst-rfc3484.c b/nss/tst-rfc3484.c
new file mode 100644
index 0000000..5b4a0c5
--- /dev/null
+++ b/nss/tst-rfc3484.c
@@ -0,0 +1,153 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <ifaddrs.h>
+#include <stdint.h>
+
+/* Internal definitions used in the libc code.  */
+#define __getservbyname_r getservbyname_r
+#define __socket socket
+#define __getsockname getsockname
+#define __inet_aton inet_aton
+#define __gethostbyaddr_r gethostbyaddr_r
+#define __gethostbyname2_r gethostbyname2_r
+#define __qsort_r qsort_r
+#define __stat64 stat64
+
+void
+attribute_hidden
+__check_pf (bool *p1, bool *p2, struct in6addrinfo **in6ai, size_t *in6ailen)
+{
+  *p1 = *p2 = true;
+  *in6ai = NULL;
+  *in6ailen = 0;
+}
+
+void
+attribute_hidden
+__free_in6ai (struct in6addrinfo *ai)
+{
+}
+
+void
+attribute_hidden
+__check_native (uint32_t a1_index, int *a1_native,
+		uint32_t a2_index, int *a2_native)
+{
+}
+
+int
+attribute_hidden
+__idna_to_ascii_lz (const char *input, char **output, int flags)
+{
+  return 0;
+}
+
+int
+attribute_hidden
+__idna_to_unicode_lzlz (const char *input, char **output, int flags)
+{
+  *output = NULL;
+  return 0;
+}
+
+void
+attribute_hidden
+_res_hconf_init (void)
+{
+}
+
+#undef	USE_NSCD
+#include "getaddrinfo.c"
+
+nss_action_list __nss_hosts_database attribute_hidden;
+
+/* This is the beginning of the real test code.  The above defines
+   (among other things) the function rfc3484_sort.  */
+
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define h(n) n
+#else
+# define h(n) __bswap_constant_32 (n)
+#endif
+
+struct sockaddr_in addrs[] =
+{
+  { .sin_family = AF_INET, .sin_addr = { h (0x0aa85f19) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xac105f19) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0000219) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a86d1d) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a85d03) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a82c3d) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a86002) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a802f3) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a80810) } },
+  { .sin_family = AF_INET, .sin_addr = { h (0xc0a85e02) } }
+};
+#define naddrs (sizeof (addrs) / sizeof (addrs[0]))
+static struct addrinfo ais[naddrs];
+static struct sort_result results[naddrs];
+static size_t order[naddrs];
+
+static int expected[naddrs] =
+  {
+    9, 4, 3, 6, 5, 7, 8, 2, 0, 1
+  };
+
+
+ssize_t
+__getline (char **lineptr, size_t *n, FILE *s)
+{
+  *lineptr = NULL;
+  *n = 0;
+  return 0;
+}
+
+
+static int
+do_test (void)
+{
+  labels = default_labels;
+  precedence = default_precedence;
+  scopes= default_scopes;
+
+  struct sockaddr_in so;
+  so.sin_family = AF_INET;
+  so.sin_addr.s_addr = h (0xc0a85f19);
+  /* Clear the rest of the structure to avoid warnings.  */
+  memset (so.sin_zero, '\0', sizeof (so.sin_zero));
+
+  for (int i = 0; i < naddrs; ++i)
+    {
+      ais[i].ai_family = AF_INET;
+      ais[i].ai_addr = (struct sockaddr *) &addrs[i];
+      results[i].dest_addr = &ais[i];
+      results[i].got_source_addr = true;
+      memcpy(&results[i].source_addr, &so, sizeof (so));
+      results[i].source_addr_len = sizeof (so);
+      results[i].source_addr_flags = 0;
+      results[i].prefixlen = 8;
+      results[i].index = 0;
+
+      order[i] = i;
+    }
+
+  struct sort_result_combo combo = { .results = results, .nresults = naddrs };
+  qsort_r (order, naddrs, sizeof (order[0]), rfc3484_sort, &combo);
+
+  int result = 0;
+  for (int i = 0; i < naddrs; ++i)
+    {
+      struct in_addr addr = ((struct sockaddr_in *) (results[order[i]].dest_addr->ai_addr))->sin_addr;
+
+      int here = memcmp (&addr, &addrs[expected[i]].sin_addr,
+			 sizeof (struct in_addr));
+      printf ("[%d] = %s: %s\n", i, inet_ntoa (addr), here ? "FAIL" : "OK");
+      result |= here;
+    }
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"