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

1 files changed, 54 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/getrlimit64.c b/sysdeps/unix/sysv/linux/getrlimit64.c
new file mode 100644
index 0000000000..19e991166f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/getrlimit64.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>
+
+/* 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)
+{
+#ifdef __ASSUME_PRLIMIT64
+  return INLINE_SYSCALL (prlimit64, 4, 0, resource, NULL, rlimits);
+#else
+# ifdef __NR_prlimit64
+  int res = INLINE_SYSCALL (prlimit64, 4, 0, resource, NULL, rlimits);
+  if (res == 0 || errno != ENOSYS)
+    return res;
+# endif
+  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;
+#endif
+}