Fix SkFILEStream.

Change-Id: I8c66e4e3e857227aed3d0bc497982f4c0d96d917
Reviewed-on: https://skia-review.googlesource.com/9498
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/ports/SkOSFile_posix.cpp b/src/ports/SkOSFile_posix.cpp
index 396de68bbe..48b5b95ad3 100644
--- a/src/ports/SkOSFile_posix.cpp
+++ b/src/ports/SkOSFile_posix.cpp
@@ -95,6 +95,18 @@ void* sk_fmmap(FILE* f, size_t* size) {
     return sk_fdmmap(fd, size);
 }
 
+size_t sk_qread(FILE* file, void* buffer, size_t count, size_t offset) {
+    int fd = sk_fileno(file);
+    if (fd < 0) {
+        return SIZE_MAX;
+    }
+    ssize_t bytesRead = pread(fd, buffer, count, offset);
+    if (bytesRead < 0) {
+        return SIZE_MAX;
+    }
+    return bytesRead;
+}
+
 ////////////////////////////////////////////////////////////////////////////
 
 struct SkOSFileIterData {