diff --git dom/system/OSFileConstants.cpp dom/system/OSFileConstants.cpp
index 4b21361..cb3be32 100644
--- dom/system/OSFileConstants.cpp
+++ dom/system/OSFileConstants.cpp
@@ -596,7 +596,7 @@ static const dom::ConstantSpec gLibcProperties[] =
{ "OSFILE_SIZEOF_STATVFS", INT_TO_JSVAL(sizeof (struct statvfs)) },
- { "OSFILE_OFFSETOF_STATVFS_F_BSIZE", INT_TO_JSVAL(offsetof (struct statvfs, f_bsize)) },
+ { "OSFILE_OFFSETOF_STATVFS_F_FRSIZE", INT_TO_JSVAL(offsetof (struct statvfs, f_frsize)) },
{ "OSFILE_OFFSETOF_STATVFS_F_BAVAIL", INT_TO_JSVAL(offsetof (struct statvfs, f_bavail)) },
#endif // defined(XP_UNIX)
diff --git toolkit/components/osfile/modules/osfile_unix_back.jsm toolkit/components/osfile/modules/osfile_unix_back.jsm
index b59fca4..0cf220b 100644
--- toolkit/components/osfile/modules/osfile_unix_back.jsm
+++ toolkit/components/osfile/modules/osfile_unix_back.jsm
@@ -228,8 +228,8 @@
let statvfs = new SharedAll.HollowStructure("statvfs",
Const.OSFILE_SIZEOF_STATVFS);
- statvfs.add_field_at(Const.OSFILE_OFFSETOF_STATVFS_F_BSIZE,
- "f_bsize", Type.unsigned_long.implementation);
+ statvfs.add_field_at(Const.OSFILE_OFFSETOF_STATVFS_F_FRSIZE,
+ "f_frsize", Type.unsigned_long.implementation);
statvfs.add_field_at(Const.OSFILE_OFFSETOF_STATVFS_F_BAVAIL,
"f_bavail", Type.fsblkcnt_t.implementation);
diff --git toolkit/components/osfile/modules/osfile_unix_front.jsm toolkit/components/osfile/modules/osfile_unix_front.jsm
index 99e5e9b..de642c5 100644
--- toolkit/components/osfile/modules/osfile_unix_front.jsm
+++ toolkit/components/osfile/modules/osfile_unix_front.jsm
@@ -373,7 +373,7 @@
throw_on_negative("statvfs", UnixFile.statvfs(sourcePath, fileSystemInfoPtr));
let bytes = new Type.uint64_t.implementation(
- fileSystemInfo.f_bsize * fileSystemInfo.f_bavail);
+ fileSystemInfo.f_frsize * fileSystemInfo.f_bavail);
return bytes.value;
};
