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, 262 insertions, 0 deletions

diff --git a/REORG.TODO/hesiod/nss_hesiod/hesiod-grp.c b/REORG.TODO/hesiod/nss_hesiod/hesiod-grp.c
new file mode 100644
index 0000000000..a04f530945
--- /dev/null
+++ b/REORG.TODO/hesiod/nss_hesiod/hesiod-grp.c
@@ -0,0 +1,262 @@
+/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 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 <ctype.h>
+#include <errno.h>
+#include <grp.h>
+#include <hesiod.h>
+#include <nss.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h>
+
+/* Get the declaration of the parser function.  */
+#define ENTNAME grent
+#define STRUCTURE group
+#define EXTERN_PARSER
+#include <nss/nss_files/files-parse.c>
+
+enum nss_status
+_nss_hesiod_setgrent (int stayopen)
+{
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_hesiod_endgrent (void)
+{
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+lookup (const char *name, const char *type, struct group *grp,
+	char *buffer, size_t buflen, int *errnop)
+{
+  struct parser_data *data = (void *) buffer;
+  size_t linebuflen;
+  void *context;
+  char **list;
+  int parse_res;
+  size_t len;
+  int olderr = errno;
+
+  if (hesiod_init (&context) < 0)
+    return NSS_STATUS_UNAVAIL;
+
+  list = hesiod_resolve (context, name, type);
+  if (list == NULL)
+    {
+      int err = errno;
+      hesiod_end (context);
+      __set_errno (olderr);
+      return err == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
+    }
+
+  linebuflen = buffer + buflen - data->linebuffer;
+  len = strlen (*list) + 1;
+  if (linebuflen < len)
+    {
+      hesiod_free_list (context, list);
+      hesiod_end (context);
+      *errnop = ERANGE;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  memcpy (data->linebuffer, *list, len);
+  hesiod_free_list (context, list);
+  hesiod_end (context);
+
+  parse_res = _nss_files_parse_grent (buffer, grp, data, buflen, errnop);
+  if (parse_res < 1)
+    {
+      __set_errno (olderr);
+      return parse_res == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_NOTFOUND;
+    }
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_hesiod_getgrnam_r (const char *name, struct group *grp,
+			char *buffer, size_t buflen, int *errnop)
+{
+  return lookup (name, "group", grp, buffer, buflen, errnop);
+}
+
+enum nss_status
+_nss_hesiod_getgrgid_r (gid_t gid, struct group *grp,
+			char *buffer, size_t buflen, int *errnop)
+{
+  char gidstr[21];	/* We will probably never have a gid_t with more
+			   than 64 bits.  */
+
+  snprintf (gidstr, sizeof gidstr, "%d", gid);
+
+  return lookup (gidstr, "gid", grp, buffer, buflen, errnop);
+}
+
+static int
+internal_gid_in_list (const gid_t *list, const gid_t g, long int len)
+{
+  while (len > 0)
+    {
+      if (*list == g)
+	return 1;
+      --len;
+      ++list;
+    }
+  return 0;
+}
+
+static enum nss_status
+internal_gid_from_group (void *context, const char *groupname, gid_t *group)
+{
+  char **grp_res;
+  enum nss_status status = NSS_STATUS_NOTFOUND;
+
+  grp_res = hesiod_resolve (context, groupname, "group");
+  if (grp_res != NULL && *grp_res != NULL)
+    {
+      char *p = *grp_res;
+
+      /* Skip to third field.  */
+      while (*p != '\0' && *p != ':')
+	++p;
+      if (*p != '\0')
+	++p;
+      while (*p != '\0' && *p != ':')
+	++p;
+      if (*p != '\0')
+	{
+	  char *endp;
+	  char *q = ++p;
+	  long int val;
+
+	  while (*q != '\0' && *q != ':')
+	    ++q;
+
+	  val = strtol (p, &endp, 10);
+	  if (sizeof (gid_t) == sizeof (long int) || (gid_t) val == val)
+	    {
+	      *group = val;
+	      if (endp == q && endp != p)
+		status = NSS_STATUS_SUCCESS;
+	    }
+        }
+      hesiod_free_list (context, grp_res);
+    }
+  return status;
+}
+
+enum nss_status
+_nss_hesiod_initgroups_dyn (const char *user, gid_t group, long int *start,
+			    long int *size, gid_t **groupsp, long int limit,
+			    int *errnop)
+{
+  enum nss_status status = NSS_STATUS_SUCCESS;
+  char **list = NULL;
+  char *p;
+  void *context;
+  gid_t *groups = *groupsp;
+  int save_errno;
+
+  if (hesiod_init (&context) < 0)
+    return NSS_STATUS_UNAVAIL;
+
+  list = hesiod_resolve (context, user, "grplist");
+
+  if (list == NULL)
+    {
+      hesiod_end (context);
+      return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
+    }
+
+  save_errno = errno;
+
+  p = *list;
+  while (*p != '\0')
+    {
+      char *endp;
+      char *q;
+      long int val;
+
+      status = NSS_STATUS_NOTFOUND;
+
+      q = p;
+      while (*q != '\0' && *q != ':' && *q != ',')
+	++q;
+
+      if (*q != '\0')
+	*q++ = '\0';
+
+      __set_errno (0);
+      val = strtol (p, &endp, 10);
+      /* Test whether the number is representable in a variable of
+         type `gid_t'.  If not ignore the number.  */
+      if ((sizeof (gid_t) == sizeof (long int) || (gid_t) val == val)
+	  && errno == 0)
+	{
+	  if (*endp == '\0' && endp != p)
+	    {
+	      group = val;
+	      status = NSS_STATUS_SUCCESS;
+	    }
+	  else
+	    status = internal_gid_from_group (context, p, &group);
+
+	  if (status == NSS_STATUS_SUCCESS
+	      && !internal_gid_in_list (groups, group, *start))
+	    {
+	      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)++] = group;
+	    }
+	}
+
+      p = q;
+    }
+
+  __set_errno (save_errno);
+
+ done:
+  hesiod_free_list (context, list);
+  hesiod_end (context);
+
+  return NSS_STATUS_SUCCESS;
+}