Remove 'grp' and merge into 'nss' and 'posix'

The majority of grp routines are entry points for nss functionality.
This commit removes the 'grp' subdirectory and moves all nss-relevant
functionality and all tests to 'nss', and the 'setgroups' stub into
'posix' (alongside the 'getgroups' stub).  References to grp/ are
accordingly changed.  In addition, compat-initgroups.c, a fallback
implementation of initgroups is renamed to initgroups-fallback.c so that
the build system does not confuse it for nss_compat/compat-initgroups.c.

Build time improves very slightly; e.g. down from an average of 45.5s to
44.5s on an 8-thread mobile x86_64 CPU.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 0 insertions, 116 deletions

diff --git a/grp/compat-initgroups.c b/grp/compat-initgroups.c
deleted file mode 100644
index 9df940767b..0000000000
--- a/grp/compat-initgroups.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* Prototype for the setgrent functions we use here.  */
-typedef enum nss_status (*set_function) (void);
-
-/* Prototype for the endgrent functions we use here.  */
-typedef enum nss_status (*end_function) (void);
-
-/* Prototype for the setgrent functions we use here.  */
-typedef enum nss_status (*get_function) (struct group *, char *,
-					 size_t, int *);
-
-
-static enum nss_status
-compat_call (nss_action_list nip, const char *user, gid_t group, long int *start,
-	     long int *size, gid_t **groupsp, long int limit, int *errnop)
-{
-  struct group grpbuf;
-  enum nss_status status;
-  set_function setgrent_fct;
-  get_function getgrent_fct;
-  end_function endgrent_fct;
-  gid_t *groups = *groupsp;
-
-  getgrent_fct = __nss_lookup_function (nip, "getgrent_r");
-  if (getgrent_fct == NULL)
-    return NSS_STATUS_UNAVAIL;
-
-  setgrent_fct = __nss_lookup_function (nip, "setgrent");
-  if (setgrent_fct)
-    {
-      status = DL_CALL_FCT (setgrent_fct, ());
-      if (status != NSS_STATUS_SUCCESS)
-	return status;
-    }
-
-  endgrent_fct = __nss_lookup_function (nip, "endgrent");
-
-  struct scratch_buffer tmpbuf;
-  scratch_buffer_init (&tmpbuf);
-  enum nss_status result = NSS_STATUS_SUCCESS;
-
-  do
-    {
-      while ((status = DL_CALL_FCT (getgrent_fct,
-				     (&grpbuf, tmpbuf.data, tmpbuf.length,
-				      errnop)),
-	      status == NSS_STATUS_TRYAGAIN)
-	     && *errnop == ERANGE)
-        {
-	  if (!scratch_buffer_grow (&tmpbuf))
-	    {
-	      result = NSS_STATUS_TRYAGAIN;
-	      goto done;
-	    }
-        }
-
-      if (status != NSS_STATUS_SUCCESS)
-        goto done;
-
-      if (grpbuf.gr_gid != group)
-        {
-          char **m;
-
-          for (m = grpbuf.gr_mem; *m != NULL; ++m)
-            if (strcmp (*m, user) == 0)
-              {
-		/* Check whether the group is already on the list.  */
-		long int cnt;
-		for (cnt = 0; cnt < *start; ++cnt)
-		  if (groups[cnt] == grpbuf.gr_gid)
-		    break;
-
-		if (cnt == *start)
-		  {
-		    /* Matches user and not yet on the list.  Insert
-		       this group.  */
-		    if (__glibc_unlikely (*start == *size))
-		      {
-			/* Need a bigger buffer.  */
-			gid_t *newgroups;
-			long int newsize;
-
-			if (limit > 0 && *size == limit)
-			  /* We reached the maximum.  */
-			  goto done;
-
-			if (limit <= 0)
-			  newsize = 2 * *size;
-			else
-			  newsize = MIN (limit, 2 * *size);
-
-			newgroups = realloc (groups,
-					     newsize * sizeof (*groups));
-			if (newgroups == NULL)
-			  goto done;
-			*groupsp = groups = newgroups;
-			*size = newsize;
-		      }
-
-		    groups[*start] = grpbuf.gr_gid;
-		    *start += 1;
-		  }
-
-                break;
-              }
-        }
-    }
-  while (status == NSS_STATUS_SUCCESS);
-
- done:
-  scratch_buffer_free (&tmpbuf);
-
-  if (endgrent_fct)
-    DL_CALL_FCT (endgrent_fct, ());
-
-  return result;
-}