Add <sys/statvfs.h>.

Bug: 2512019
Change-Id: I6e7fd3fa281977cc4bc270481a95416b5b2dc351

1 files changed, 58 insertions, 0 deletions

diff --git a/libc/bionic/statvfs.cpp b/libc/bionic/statvfs.cpp
new file mode 100644
index 000000000..5d5828149
--- /dev/null
+++ b/libc/bionic/statvfs.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/statvfs.h>
+
+#include <sys/statfs.h>
+
+extern "C" int __statfs64(const char*, size_t, struct statfs*);
+extern "C" int __fstatfs64(int, size_t, struct statfs*);
+
+#define ST_VALID 0x0020
+
+static void __statfs_to_statvfs(const struct statfs& in, struct statvfs* out) {
+  out->f_bsize = in.f_bsize;
+  out->f_frsize = in.f_frsize;
+  out->f_blocks = in.f_blocks;
+  out->f_bfree = in.f_bfree;
+  out->f_bavail = in.f_bavail;
+  out->f_files = in.f_files;
+  out->f_ffree = in.f_ffree;
+  out->f_favail = in.f_ffree;
+  out->f_fsid = in.f_fsid.__val[0] | (static_cast<uint64_t>(in.f_fsid.__val[1]) << 32);
+  out->f_flag = in.f_flags & ~ST_VALID;
+  out->f_namemax = in.f_namelen;
+}
+
+int statvfs(const char* path, struct statvfs* result) {
+  struct statfs tmp;
+  int rc = __statfs64(path, sizeof(tmp), &tmp);
+  if (rc != 0) {
+    return rc;
+  }
+  __statfs_to_statvfs(tmp, result);
+  return 0;
+}
+
+int fstatvfs(int fd, struct statvfs* result) {
+  struct statfs tmp;
+  int rc = __fstatfs64(fd, sizeof(tmp), &tmp);
+  if (rc != 0) {
+    return rc;
+  }
+  __statfs_to_statvfs(tmp, result);
+  return 0;
+}