Update.

1998-06-10  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/Makefile: Add nis-initgroups and compat-initgroups.
	* nis/libnss_compat.map: Add _nss_compat_initgroups.
	* nis/libnss_nis.map: Add _nss_nis_initgroups.
	* nis/nss_compat/compat-initgroups.c: New, faster then getgrent().
	* nis/nss_nis/nis-initgroups.c: Likewise.
	* libc-work/nss/nsswitch.c: Rename nss_lookup_function to
	__nss_lookup_function and make it public.
	* grp/initgroups.c: Rewrite, to use initgroups function from NSS
	module if exists, else use old method.

1998-06-19  Ulrich Drepper  <drepper@cygnus.com>

	* nss/getXXbyYY_r.c (lookup_function): Correct return in type
	definition.
	* nss/getXXent_r.c (set_function, end_function, get_function):
	Likewise.  Reported by Thorsten Kukuk.

	* sysdeps/unix/sysv/linux/sigstack.c: Mark sigstack as dangerous.

1998-06-19  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/sparc/Dist: Follow change from
	1998-06-16 and distribute kernel_termios.h.

	* nis/Makefile (distribute): Add nis_xdr.h.

1998-06-19  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Disable for
	kernels that don't have sigaltstack.

1 files changed, 204 insertions, 0 deletions

diff --git a/nis/nss_nis/nis-initgroups.c b/nis/nss_nis/nis-initgroups.c
new file mode 100644
index 0000000..5960c80
--- /dev/null
+++ b/nis/nss_nis/nis-initgroups.c
@@ -0,0 +1,204 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <nss.h>
+#include <grp.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <rpcsvc/yp.h>
+#include <rpcsvc/ypclnt.h>
+
+#include "nss-nis.h"
+
+/* Get the declaration of the parser function.  */
+#define ENTNAME grent
+#define STRUCTURE group
+#define EXTERN_PARSER
+#include <nss/nss_files/files-parse.c>
+
+struct response_t
+{
+  char *val;
+  struct response_t *next;
+};
+
+struct intern_t
+{
+  struct response_t *start;
+  struct response_t *next;
+};
+typedef struct intern_t intern_t;
+
+static int
+saveit (int instatus, char *inkey, int inkeylen, char *inval,
+        int invallen, char *indata)
+{
+  intern_t *intern = (intern_t *) indata;
+
+  if (instatus != YP_TRUE)
+    return instatus;
+
+  if (inkey && inkeylen > 0 && inval && invallen > 0)
+    {
+      if (intern->start == NULL)
+        {
+          intern->start = malloc (sizeof (struct response_t));
+          intern->next = intern->start;
+        }
+      else
+        {
+          intern->next->next = malloc (sizeof (struct response_t));
+          intern->next = intern->next->next;
+        }
+      intern->next->next = NULL;
+      intern->next->val = malloc (invallen + 1);
+      strncpy (intern->next->val, inval, invallen);
+      intern->next->val[invallen] = '\0';
+    }
+
+  return 0;
+}
+
+static enum nss_status
+internal_setgrent (intern_t *intern)
+{
+  char *domainname;
+  struct ypall_callback ypcb;
+  enum nss_status status;
+
+  if (yp_get_default_domain (&domainname))
+    return NSS_STATUS_UNAVAIL;
+
+  intern->start = NULL;
+
+  ypcb.foreach = saveit;
+  ypcb.data = (char *) intern;
+  status = yperr2nss (yp_all (domainname, "group.byname", &ypcb));
+  intern->next = intern->start;
+
+  return status;
+}
+
+static enum nss_status
+internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
+		     int *errnop, intern_t *intern)
+{
+  struct parser_data *data = (void *) buffer;
+  int parse_res;
+  char *p;
+
+  if (intern->start == NULL)
+    internal_setgrent (intern);
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      if (intern->next == NULL)
+        return NSS_STATUS_NOTFOUND;
+      p = strncpy (buffer, intern->next->val, buflen);
+      while (isspace (*p))
+        ++p;
+
+      parse_res = _nss_files_parse_grent (p, grp, data, buflen, errnop);
+      if (parse_res == -1)
+        return NSS_STATUS_TRYAGAIN;
+      intern->next = intern->next->next;
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nis_initgroups (const char *user, gid_t group, long int *start,
+		     long int *size, gid_t *groups, long int limit,
+		     int *errnop)
+{
+  struct group grpbuf, *g;
+  size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+  char *tmpbuf;
+  enum nss_status status;
+  intern_t intern = { NULL, NULL };
+
+  status = internal_setgrent (&intern);
+  if (status != NSS_STATUS_SUCCESS)
+    return status;
+
+  tmpbuf = __alloca (buflen);
+
+  do
+    {
+      while ((status =
+	      internal_getgrent_r (&grpbuf, tmpbuf, buflen, errnop,
+				   &intern)) == NSS_STATUS_TRYAGAIN
+             && *errnop == ERANGE)
+        {
+          buflen *= 2;
+          tmpbuf = __alloca (buflen);
+        }
+
+      if (status != NSS_STATUS_SUCCESS)
+	goto done;
+
+
+      g = &grpbuf;
+      if (g->gr_gid != group)
+        {
+          char **m;
+
+          for (m = g->gr_mem; *m != NULL; ++m)
+            if (strcmp (*m, user) == 0)
+              {
+                /* Matches user.  Insert this group.  */
+                if (*start == *size && limit <= 0)
+                  {
+                    /* Need a bigger buffer.  */
+		    groups = realloc (groups, *size * sizeof (*groups));
+		    if (groups == NULL)
+		      goto done;
+                    *size *= 2;
+                  }
+
+                groups[*start] = g->gr_gid;
+		*start += 1;
+
+                if (*start == limit)
+                  /* Can't take any more groups; stop searching.  */
+                  goto done;
+
+                break;
+              }
+        }
+    }
+  while (status == NSS_STATUS_SUCCESS);
+
+done:
+  while (intern.start != NULL)
+    {
+      if (intern.start->val != NULL)
+        free (intern.start->val);
+      intern.next = intern.start;
+      intern.start = intern.start->next;
+      free (intern.next);
+    }
+
+  return NSS_STATUS_SUCCESS;
+}