2.5-18.1

13 files changed, 568 insertions, 1 deletions

diff --git a/resource/Makefile b/resource/Makefile
index cddb6d3..68f9ff6 100644
--- a/resource/Makefile
+++ b/resource/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 1992, 1994, 1995, 1997 Free Software Foundation, Inc.
+# Copyright (C) 1991,1992,1994,1995,1997,2005 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -24,4 +24,6 @@ headers	  := sys/resource.h bits/resource.h sys/vlimit.h sys/vtimes.h	\
 routines := getrlimit setrlimit getrlimit64 setrlimit64 getrusage ulimit      \
 	    vlimit vtimes getpriority setpriority nice
 
+tests = tst-getrlimit
+
 include ../Rules
diff --git a/resource/getpriority.c b/resource/getpriority.c
new file mode 100644
index 0000000..501c92a
--- /dev/null
+++ b/resource/getpriority.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991,95,96,97,2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+
+/* Return the highest priority of any process specified by WHICH and WHO
+   (see <sys/resource.h>); if WHO is zero, the current process, process group,
+   or user (as specified by WHO) is used.  A lower priority number means higher
+   priority.  Priorities range from PRIO_MIN to PRIO_MAX.  */
+int
+getpriority (which, who)
+     enum __priority_which which;
+     id_t who;
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (getpriority)
+
+stub_warning (getpriority)
+#include <stub-tag.h>
diff --git a/resource/getrlimit.c b/resource/getrlimit.c
new file mode 100644
index 0000000..d4bcadd
--- /dev/null
+++ b/resource/getrlimit.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 1991, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+
+/* Put the soft and hard limits for RESOURCE in *RLIMITS.
+   Returns 0 if successful, -1 if not (and sets errno).  */
+int
+__getrlimit (enum __rlimit_resource resource, struct rlimit *rlimits)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__getrlimit, getrlimit)
+
+stub_warning (getrlimit)
+#include <stub-tag.h>
diff --git a/resource/getrlimit64.c b/resource/getrlimit64.c
new file mode 100644
index 0000000..dcd67cf
--- /dev/null
+++ b/resource/getrlimit64.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+
+/* Put the soft and hard limits for RESOURCE in *RLIMITS.
+   Returns 0 if successful, -1 if not (and sets errno).  */
+int
+getrlimit64 (enum __rlimit_resource resource, struct rlimit64 *rlimits)
+{
+  struct rlimit rlimits32;
+
+  if (__getrlimit (resource, &rlimits32) < 0)
+    return -1;
+
+  if (rlimits32.rlim_cur == RLIM_INFINITY)
+    rlimits->rlim_cur = RLIM64_INFINITY;
+  else
+    rlimits->rlim_cur = rlimits32.rlim_cur;
+  if (rlimits32.rlim_max == RLIM_INFINITY)
+    rlimits->rlim_max = RLIM64_INFINITY;
+  else
+    rlimits->rlim_max = rlimits32.rlim_max;
+
+  return 0;
+}
diff --git a/resource/getrusage.c b/resource/getrusage.c
new file mode 100644
index 0000000..c679855
--- /dev/null
+++ b/resource/getrusage.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1991, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <sys/resource.h>
+#include <errno.h>
+
+/* Return resource usage information on process indicated by WHO
+   and put it in *USAGE.  Returns 0 for success, -1 for failure.  */
+int
+__getrusage (who, usage)
+     enum __rusage_who who;
+     struct rusage *usage;
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (getrusage)
+
+weak_alias (__getrusage, getrusage)
+#include <stub-tag.h>
diff --git a/resource/nice.c b/resource/nice.c
new file mode 100644
index 0000000..8561931
--- /dev/null
+++ b/resource/nice.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <unistd.h>
+
+/* Increment the scheduling priority of the calling process by INCR.
+   The superuser may use a negative INCR to decrement the priority.  */
+int
+nice (incr)
+     int incr;
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (nice)
+#include <stub-tag.h>
diff --git a/resource/setpriority.c b/resource/setpriority.c
new file mode 100644
index 0000000..b2e6f8a
--- /dev/null
+++ b/resource/setpriority.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 1991,95,96,97,2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+
+/* Set the priority of all processes specified by WHICH and WHO
+   to PRIO.  Returns 0 on success, -1 on errors.  */
+int
+setpriority (which, who, prio)
+     enum __priority_which which;
+     id_t who;
+     int prio;
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (setpriority)
+
+stub_warning (setpriority)
+#include <stub-tag.h>
diff --git a/resource/setrlimit.c b/resource/setrlimit.c
new file mode 100644
index 0000000..c8f6e03
--- /dev/null
+++ b/resource/setrlimit.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+
+/* Set the soft and hard limits for RESOURCE to *RLIMITS.
+   Only the super-user can increase hard limits.
+   Return 0 if successful, -1 if not (and sets errno).  */
+int
+setrlimit (resource, rlimits)
+     enum __rlimit_resource resource;
+     const struct rlimit *rlimits;
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+
+stub_warning (setrlimit)
+#include <stub-tag.h>
diff --git a/resource/setrlimit64.c b/resource/setrlimit64.c
new file mode 100644
index 0000000..d4b4bfc
--- /dev/null
+++ b/resource/setrlimit64.c
@@ -0,0 +1,43 @@
+/* Copyright (C) 1991,1995,1996,1997,1998,2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+
+/* Set the soft and hard limits for RESOURCE to *RLIMITS.
+   Only the super-user can increase hard limits.
+   Return 0 if successful, -1 if not (and sets errno).  */
+int
+setrlimit64 (resource, rlimits)
+     enum __rlimit_resource resource;
+     const struct rlimit64 *rlimits;
+{
+  struct rlimit rlimits32;
+
+  if (rlimits->rlim_cur >= RLIM_INFINITY)
+    rlimits32.rlim_cur = RLIM_INFINITY;
+  else
+    rlimits32.rlim_cur = rlimits->rlim_cur;
+  if (rlimits->rlim_max >= RLIM_INFINITY)
+    rlimits32.rlim_max = RLIM_INFINITY;
+  else
+    rlimits32.rlim_max = rlimits->rlim_max;
+
+  return __setrlimit (resource, &rlimits32);
+}
diff --git a/resource/tst-getrlimit.c b/resource/tst-getrlimit.c
new file mode 100644
index 0000000..6748034
--- /dev/null
+++ b/resource/tst-getrlimit.c
@@ -0,0 +1,112 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/resource.h>
+
+
+static struct
+{
+  const char *name;
+  int resource;
+  bool required;
+} tests[] =
+  {
+    /* The following 7 limits are part of POSIX and must exist.  */
+    { "RLIMIT_CORE", RLIMIT_CORE, true },
+    { "RLIMIT_CPU", RLIMIT_CPU, true },
+    { "RLIMIT_DATA", RLIMIT_DATA, true },
+    { "RLIMIT_FSIZE", RLIMIT_FSIZE, true },
+    { "RLIMIT_NOFILE", RLIMIT_NOFILE, true },
+    { "RLIMIT_STACK", RLIMIT_STACK, true },
+    { "RLIMIT_AS", RLIMIT_AS, true },
+    /* The following are traditional Unix limits which are also
+       expected (by us).  */
+    { "RLIMIT_RSS", RLIMIT_RSS, true },
+    { "RLIMIT_NPROC", RLIMIT_NPROC, true },
+    /* The following are extensions.  */
+#ifdef RLIMIT_MEMLOCK
+    { "RLIMIT_MEMLOCK", RLIMIT_MEMLOCK, false },
+#endif
+#ifdef RLIMIT_LOCKS
+    { "RLIMIT_LOCKS", RLIMIT_LOCKS, false },
+#endif
+#ifdef RLIMIT_SIGPENDING
+    { "RLIMIT_SIGPENDING", RLIMIT_SIGPENDING, false },
+#endif
+#ifdef RLIMIT_MSGQUEUE
+    { "RLIMIT_MSGQUEUE", RLIMIT_MSGQUEUE, false },
+#endif
+#ifdef RLIMIT_NICE
+    { "RLIMIT_NICE", RLIMIT_NICE, false },
+#endif
+#ifdef RLIMIT_RTPRIO
+    { "RLIMIT_RTPRIO", RLIMIT_RTPRIO, false },
+#endif
+  };
+#define ntests (sizeof (tests) / sizeof (tests[0]))
+
+
+static int
+do_test (void)
+{
+  int status = 0;
+
+  for (int i = 0; i < ntests; ++i)
+    {
+      bool this_ok = true;
+
+      struct rlimit r;
+      int res = getrlimit (tests[i].resource, &r);
+      if (res == -1)
+	{
+	  if (errno == EINVAL)
+	    {
+	      if (tests[i].required)
+		{
+		  printf ("limit %s expectedly not available for getrlimit\n",
+			  tests[i].name);
+		  status = 1;
+		  this_ok = false;
+		}
+	    }
+	  else
+	    {
+	      printf ("getrlimit for %s returned unexpected error: %m\n",
+		      tests[i].name);
+	      status = 1;
+	      this_ok = false;
+	    }
+	}
+
+      struct rlimit64 r64;
+      res = getrlimit64 (tests[i].resource, &r64);
+      if (res == -1)
+	{
+	  if (errno == EINVAL)
+	    {
+	      if (tests[i].required)
+		{
+		  printf ("limit %s expectedly not available for getrlimit64"
+			  "\n", tests[i].name);
+		  status = 1;
+		  this_ok = false;
+		}
+	    }
+	  else
+	    {
+	      printf ("getrlimit64 for %s returned unexpected error: %m\n",
+		      tests[i].name);
+	      status = 1;
+	      this_ok = false;
+	    }
+	}
+
+      if (this_ok)
+	printf ("limit %s OK\n", tests[i].name);
+    }
+
+  return status;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/resource/ulimit.c b/resource/ulimit.c
new file mode 100644
index 0000000..cc74054
--- /dev/null
+++ b/resource/ulimit.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <errno.h>
+#include <sys/resource.h>
+
+/* Function depends on CMD:
+   1 = Return the limit on the size of a file, in units of 512 bytes.
+   2 = Set the limit on the size of a file to NEWLIMIT.  Only the
+       super-user can increase the limit.
+   3 = Return the maximum possible address of the data segment.
+   4 = Return the maximum number of files that the calling process
+       can open.
+   Returns -1 on errors.  */
+long int
+__ulimit (int cmd, ...)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+weak_alias (__ulimit, ulimit)
+
+stub_warning (ulimit)
+#include <stub-tag.h>
diff --git a/resource/vlimit.c b/resource/vlimit.c
new file mode 100644
index 0000000..03d89f4
--- /dev/null
+++ b/resource/vlimit.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 1991, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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.  */
+
+/* This is generic in the sense that it will work with the BSD, SYSV,
+   or stub versions of getrlimit.  Separate versions could be written
+   for efficiency, but it's probably not worth it.  */
+
+#include <sys/vlimit.h>
+#include <sys/resource.h>
+#include <errno.h>
+
+/* Set the soft limit for RESOURCE to be VALUE.
+   Returns 0 for success, -1 for failure.  */
+int
+vlimit (resource, value)
+     enum __vlimit_resource resource;
+     int value;
+{
+  if (resource >= LIM_CPU && resource <= LIM_MAXRSS)
+    {
+      /* The rlimit codes happen to each be one less
+	 than the corresponding vlimit codes.  */
+      enum __rlimit_resource rlimit_res =
+	(enum __rlimit_resource) ((int) resource - 1);
+      struct rlimit lims;
+
+      if (__getrlimit (rlimit_res, &lims) < 0)
+	return -1;
+
+      lims.rlim_cur = value;
+      return __setrlimit (rlimit_res, &lims);
+    }
+
+  __set_errno (EINVAL);
+  return -1;
+}
diff --git a/resource/vtimes.c b/resource/vtimes.c
new file mode 100644
index 0000000..37dc01b
--- /dev/null
+++ b/resource/vtimes.c
@@ -0,0 +1,65 @@
+/* Copyright (C) 1991, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <stddef.h>
+#include <sys/vtimes.h>
+#include <sys/resource.h>
+
+/* Return the number of 1/VTIMES_UNITS_PER_SECOND-second
+   units in the `struct timeval' TV.  */
+#define TIMEVAL_TO_VTIMES(tv) \
+  ((tv.tv_sec * VTIMES_UNITS_PER_SECOND) + \
+   (tv.tv_usec * VTIMES_UNITS_PER_SECOND / 1000000))
+
+/* If VT is not NULL, write statistics for WHO into *VT.
+   Return 0 for success, -1 for failure.  */
+static int
+vtimes_one (struct vtimes *vt, enum __rusage_who who)
+{
+  if (vt != NULL)
+    {
+      struct rusage usage;
+
+      if (__getrusage (who, &usage) < 0)
+	return -1;
+
+      vt->vm_utime = TIMEVAL_TO_VTIMES (usage.ru_utime);
+      vt->vm_stime = TIMEVAL_TO_VTIMES (usage.ru_stime);
+      vt->vm_idsrss = usage.ru_idrss + usage.ru_isrss;
+      vt->vm_majflt = usage.ru_majflt;
+      vt->vm_minflt = usage.ru_minflt;
+      vt->vm_nswap = usage.ru_nswap;
+      vt->vm_inblk = usage.ru_inblock;
+      vt->vm_oublk = usage.ru_oublock;
+    }
+  return 0;
+}
+
+/* If CURRENT is not NULL, write statistics for the current process into
+   *CURRENT.  If CHILD is not NULL, write statistics for all terminated child
+   processes into *CHILD.  Returns 0 for success, -1 for failure.  */
+int
+vtimes (current, child)
+     struct vtimes *current;
+     struct vtimes *child;
+{
+  if (vtimes_one (current, RUSAGE_SELF) < 0
+      || vtimes_one (child, RUSAGE_CHILDREN) < 0)
+    return -1;
+  return 0;
+}