1 files changed, 86 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/grantpt.c b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/grantpt.c
new file mode 100644
index 0000000000..2eb2479df7
--- /dev/null
+++ b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/grantpt.c
@@ -0,0 +1,86 @@
+/* Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <unistd.h>
+#include <streams/stropts.h>
+#include <sys/ptms.h>
+#include <grp.h>
+#include <stddef.h>
+#include <memory.h>
+#include <errno.h>
+
+#define INIT_GROUP_LEN	0x0100
+#define MAX_GROUP_LEN	0x8000
+
+int
+grantpt (int fd)
+{
+  pt_own_t pto;
+  pto.pto_ruid = getuid ();
+  pto.pto_rgid = -1;
+
+  /* Keep calling getgrnam with a bigger buffer.  */
+  size_t len = INIT_GROUP_LEN;
+  char *buf = NULL;
+  struct group gr, *gro;
+  do
+    {
+      buf = realloc (buf, len);
+      if (!buf)
+        {
+          /* If we can't allocate 64 KB something is wrong.  */
+          free(buf);
+          return -1;
+        }
+      gro = NULL;
+      int result = getgrnam_r ("tty", &gr, buf, len, &gro);
+      if(result == 0)
+        {
+          /* No entry found.  */
+          if(gro == NULL)
+            break;
+          pto.pto_rgid = gro->gr_gid;
+        }
+      else if (errno != EINTR && errno != ERANGE && errno != ENOMEM)
+        {
+          /* Unknown error - assume failure.  */
+          break;
+        }
+
+      len <<= 1;
+    }
+  while (len < MAX_GROUP_LEN);
+  free (buf);
+
+  /* If getgrnam fails we use the user's gid.  */
+  if (pto.pto_rgid == -1)
+    pto.pto_rgid = getgid ();
+
+  /* Send OWNERPT down.  */
+  struct strioctl si;
+  si.ic_cmd = OWNERPT;
+  si.ic_timout = 0;
+  si.ic_len = sizeof (pt_own_t);
+  si.ic_dp = (char *)&pto;
+
+  int res = (ioctl (fd, I_STR, &si) < 0) ? -1 : 0;
+  if (res != 0 && errno == ENOTTY)
+    __set_errno (EINVAL);
+  return res;
+}