Merge commit 'refs/top-bases/t/bigmem' into t/bigmem

1 files changed, 76 insertions, 0 deletions

diff --git a/sysdeps/nacl/xstatconv.c b/sysdeps/nacl/xstatconv.c
new file mode 100644
index 0000000000..ecab76c5f0
--- /dev/null
+++ b/sysdeps/nacl/xstatconv.c
@@ -0,0 +1,76 @@
+/* Convert between the NaCl ABI's `struct stat' format, and libc's.
+   Copyright (C) 2015 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+#include <sys/stat.h>
+#include <xstatconv.h>
+
+internal_function
+int
+__xstat_conv (int vers, const struct nacl_abi_stat *kbuf, void *ubuf)
+{
+  /* It's kosher enough just to crash here, but there are some
+     existing NaCl tests that like to see EFAULT, and that's what
+     making the IRT call with NULL would give.  */
+  if (__glibc_unlikely (ubuf == NULL))
+    {
+      __set_errno (EFAULT);
+      return -1;
+    }
+
+  switch (vers)
+    {
+    case _STAT_VER_NACL:
+      /* Nothing to do.  The struct is in the form the NaCl ABI expects.  */
+      *(struct nacl_abi_stat *) ubuf = *kbuf;
+      break;
+
+    case _STAT_VER_LINUX:
+      {
+        struct stat *buf = ubuf;
+
+        /* Zero-fill the pad/unused fields.  */
+        memset (buf, 0, sizeof *buf);
+
+        /* Convert from NaCl IRT ABI `struct stat'.  */
+        buf->st_dev = kbuf->nacl_abi_st_dev;
+        buf->st_ino = kbuf->nacl_abi_st_ino;
+        buf->st_mode = kbuf->nacl_abi_st_mode;
+        buf->st_nlink = kbuf->nacl_abi_st_nlink;
+        buf->st_uid = kbuf->nacl_abi_st_uid;
+        buf->st_gid = kbuf->nacl_abi_st_gid;
+        buf->st_rdev = kbuf->nacl_abi_st_rdev;
+        buf->st_size = kbuf->nacl_abi_st_size;
+        buf->st_blksize = kbuf->nacl_abi_st_blksize;
+        buf->st_blocks = kbuf->nacl_abi_st_blocks;
+        buf->st_atim.tv_sec = kbuf->nacl_abi_st_atime;
+        buf->st_atim.tv_nsec = kbuf->nacl_abi_st_atimensec;
+        buf->st_mtim.tv_sec = kbuf->nacl_abi_st_mtime;
+        buf->st_mtim.tv_nsec = kbuf->nacl_abi_st_mtimensec;
+        buf->st_ctim.tv_sec = kbuf->nacl_abi_st_ctime;
+        buf->st_ctim.tv_nsec = kbuf->nacl_abi_st_ctimensec;
+      }
+      break;
+
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return 0;
+}