Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 401 insertions, 0 deletions

diff --git a/REORG.TODO/nis/nss_nisplus/nisplus-grp.c b/REORG.TODO/nis/nss_nisplus/nisplus-grp.c
new file mode 100644
index 0000000000..124b8b85b5
--- /dev/null
+++ b/REORG.TODO/nis/nss_nisplus/nisplus-grp.c
@@ -0,0 +1,401 @@
+/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <atomic.h>
+#include <nss.h>
+#include <grp.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/nis.h>
+
+#include "nss-nisplus.h"
+#include "nisplus-parser.h"
+#include <libnsl.h>
+#include <nis_intern.h>
+#include <nis_xdr.h>
+
+
+__libc_lock_define_initialized (static, lock);
+
+/* Connection information.  */
+static ib_request *ibreq;
+static directory_obj *dir;
+static dir_binding bptr;
+static char *tablepath;
+static char *tableptr;
+/* Cursor.  */
+static netobj cursor;
+
+
+nis_name grp_tablename_val attribute_hidden;
+size_t grp_tablename_len attribute_hidden;
+
+enum nss_status
+_nss_grp_create_tablename (int *errnop)
+{
+  if (grp_tablename_val == NULL)
+    {
+      const char *local_dir = nis_local_directory ();
+      size_t local_dir_len = strlen (local_dir);
+      static const char prefix[] = "group.org_dir.";
+
+      char *p = malloc (sizeof (prefix) + local_dir_len);
+      if (p == NULL)
+	{
+	  *errnop = errno;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      memcpy (__stpcpy (p, prefix), local_dir, local_dir_len + 1);
+
+      grp_tablename_len = sizeof (prefix) - 1 + local_dir_len;
+
+      atomic_write_barrier ();
+
+      if (atomic_compare_and_exchange_bool_acq (&grp_tablename_val, p, NULL))
+	{
+	  /* Another thread already installed the value.  */
+	  free (p);
+	  grp_tablename_len = strlen (grp_tablename_val);
+	}
+    }
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+static void
+internal_endgrent (void)
+{
+  __nisbind_destroy (&bptr);
+  memset (&bptr, '\0', sizeof (bptr));
+
+  nis_free_directory (dir);
+  dir = NULL;
+
+  nis_free_request (ibreq);
+  ibreq = NULL;
+
+  xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+  memset (&cursor, '\0', sizeof (cursor));
+
+  free (tablepath);
+  tableptr = tablepath = NULL;
+}
+
+
+static enum nss_status
+internal_setgrent (int *errnop)
+{
+  enum nss_status status = NSS_STATUS_SUCCESS;
+
+  if (grp_tablename_val == NULL)
+    status = _nss_grp_create_tablename (errnop);
+
+  if (status == NSS_STATUS_SUCCESS)
+    {
+      ibreq = __create_ib_request (grp_tablename_val, 0);
+      if (ibreq == NULL)
+	{
+	  *errnop = errno;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      nis_error retcode = __prepare_niscall (grp_tablename_val, &dir, &bptr, 0);
+      if (retcode != NIS_SUCCESS)
+	{
+	  nis_free_request (ibreq);
+	  ibreq = NULL;
+	  status = niserr2nss (retcode);
+	}
+    }
+
+  return status;
+}
+
+
+enum nss_status
+_nss_nisplus_setgrent (int stayopen)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  internal_endgrent ();
+
+  // XXX We need to be able to set errno.  Pass in new parameter.
+  int err;
+  status = internal_setgrent (&err);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+
+enum nss_status
+_nss_nisplus_endgrent (void)
+{
+  __libc_lock_lock (lock);
+
+  internal_endgrent ();
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+static enum nss_status
+internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen,
+			     int *errnop)
+{
+  int parse_res = -1;
+  enum nss_status retval = NSS_STATUS_SUCCESS;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      nis_error status;
+      nis_result result;
+      memset (&result, '\0', sizeof (result));
+
+      if (cursor.n_bytes == NULL)
+	{
+	  if (ibreq == NULL)
+	    {
+	      retval = internal_setgrent (errnop);
+	      if (retval != NSS_STATUS_SUCCESS)
+		return retval;
+	    }
+
+	  status = __do_niscall3 (&bptr, NIS_IBFIRST,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+	}
+      else
+	{
+	  ibreq->ibr_cookie.n_bytes = cursor.n_bytes;
+	  ibreq->ibr_cookie.n_len = cursor.n_len;
+
+	  status = __do_niscall3 (&bptr, NIS_IBNEXT,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+
+	  ibreq->ibr_cookie.n_bytes = NULL;
+	  ibreq->ibr_cookie.n_len = 0;
+	}
+
+      if (status != NIS_SUCCESS)
+	return niserr2nss (status);
+
+      if (NIS_RES_STATUS (&result) == NIS_NOTFOUND)
+	{
+	  /* No more entries on this server.  This means we have to go
+	     to the next server on the path.  */
+	  status = __follow_path (&tablepath, &tableptr, ibreq, &bptr);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  directory_obj *newdir = NULL;
+	  dir_binding newbptr;
+	  status = __prepare_niscall (ibreq->ibr_name, &newdir, &newbptr, 0);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  nis_free_directory (dir);
+	  dir = newdir;
+	  __nisbind_destroy (&bptr);
+	  bptr = newbptr;
+
+	  xdr_free ((xdrproc_t) xdr_netobj, (char *) &result.cookie);
+	  result.cookie.n_bytes = NULL;
+	  result.cookie.n_len = 0;
+	  parse_res = 0;
+	  goto next;
+	}
+      else if (NIS_RES_STATUS (&result) != NIS_SUCCESS)
+	return niserr2nss (NIS_RES_STATUS (&result));
+
+      parse_res = _nss_nisplus_parse_grent (&result, gr,
+					    buffer, buflen, errnop);
+      if (__glibc_unlikely (parse_res == -1))
+	{
+	  *errnop = ERANGE;
+	  retval = NSS_STATUS_TRYAGAIN;
+	  goto freeres;
+	}
+
+    next:
+      /* Free the old cursor.  */
+      xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+      /* Remember the new one.  */
+      cursor.n_bytes = result.cookie.n_bytes;
+      cursor.n_len = result.cookie.n_len;
+      /* Free the result structure.  NB: we do not remove the cookie.  */
+      result.cookie.n_bytes = NULL;
+      result.cookie.n_len = 0;
+    freeres:
+      xdr_free ((xdrproc_t) _xdr_nis_result, (char *) &result);
+      memset (&result, '\0', sizeof (result));
+    }
+  while (!parse_res);
+
+  return retval;
+}
+
+enum nss_status
+_nss_nisplus_getgrent_r (struct group *result, char *buffer, size_t buflen,
+			 int *errnop)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nisplus_getgrent_r (result, buffer, buflen, errnop);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nisplus_getgrnam_r (const char *name, struct group *gr,
+			 char *buffer, size_t buflen, int *errnop)
+{
+  int parse_res;
+
+  if (grp_tablename_val == NULL)
+    {
+      enum nss_status status = _nss_grp_create_tablename (errnop);
+
+      if (status != NSS_STATUS_SUCCESS)
+	return status;
+    }
+
+  if (name == NULL)
+    {
+      *errnop = EINVAL;
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  nis_result *result;
+  char buf[strlen (name) + 9 + grp_tablename_len];
+  int olderr = errno;
+
+  snprintf (buf, sizeof (buf), "[name=%s],%s", name, grp_tablename_val);
+
+  result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
+
+  if (result == NULL)
+    {
+      *errnop = ENOMEM;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS))
+    {
+      enum nss_status status = niserr2nss (result->status);
+
+      nis_freeresult (result);
+      return status;
+    }
+
+  parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
+  nis_freeresult (result);
+  if (__glibc_unlikely (parse_res < 1))
+    {
+      if (parse_res == -1)
+	{
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  __set_errno (olderr);
+	  return NSS_STATUS_NOTFOUND;
+	}
+    }
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr,
+			 char *buffer, size_t buflen, int *errnop)
+{
+  if (grp_tablename_val == NULL)
+    {
+      enum nss_status status = _nss_grp_create_tablename (errnop);
+
+      if (status != NSS_STATUS_SUCCESS)
+	return status;
+    }
+
+  int parse_res;
+  nis_result *result;
+  char buf[8 + 3 * sizeof (unsigned long int) + grp_tablename_len];
+  int olderr = errno;
+
+  snprintf (buf, sizeof (buf), "[gid=%lu],%s",
+	    (unsigned long int) gid, grp_tablename_val);
+
+  result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
+
+  if (result == NULL)
+    {
+      *errnop = ENOMEM;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS))
+    {
+      enum nss_status status = niserr2nss (result->status);
+
+      __set_errno (olderr);
+
+      nis_freeresult (result);
+      return status;
+    }
+
+  parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
+
+  nis_freeresult (result);
+  if (__glibc_unlikely (parse_res < 1))
+    {
+      __set_errno (olderr);
+
+      if (parse_res == -1)
+	{
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	return NSS_STATUS_NOTFOUND;
+    }
+
+  return NSS_STATUS_SUCCESS;
+}