Use prlimit64 for 32-bit [gs]etrlimit64 implementation.

sysdeps/unix/sysv/linux/setrlimit64.c

@@ -0,0 +1,54 @@
+/* Copyright (C) 2010 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>
+#include <sysdep.h>
+#include <kernel-features.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;
+{
+#ifdef __ASSUME_PRLIMIT64
+  return INLINE_SYSCALL (prlimit64, 4, 0, resource, rlimits, NULL);
+#else
+# ifdef __NR_prlimit64
+  int res = INLINE_SYSCALL (prlimit64, 4, 0, resource, rlimits, NULL);
+  if (res == 0 || errno != ENOSYS)
+    return res;
+# endif
+  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);
+#endif
+}