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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 
     18 #include <errno.h>
     19 #include <fcntl.h>
     20 #include <sys/sendfile.h>
     21 #include <sys/stat.h>
     22 #include <sys/types.h>
     23 
     24 #include <android-base/file.h>
     25 #include <gtest/gtest.h>
     26 
     27 TEST(sys_sendfile, sendfile) {
     28   TemporaryFile src_file;
     29   ASSERT_EQ(5, TEMP_FAILURE_RETRY(write(src_file.fd, "hello", 5)));
     30 
     31   TemporaryFile dst_file;
     32 
     33   off_t offset = 2;
     34   size_t count = 2;
     35   ssize_t rc = sendfile(dst_file.fd, src_file.fd, &offset, count);
     36   ASSERT_EQ(2, rc);
     37   ASSERT_EQ(4, offset);
     38 
     39   ASSERT_EQ(0, lseek(dst_file.fd, 0, SEEK_SET));
     40   char buf[3];
     41   buf[2] = '\0';
     42   ASSERT_EQ(2, TEMP_FAILURE_RETRY(read(dst_file.fd, &buf, 2)));
     43   ASSERT_STREQ("ll", buf);
     44 }
     45 
     46 TEST(sys_sendfile, sendfile64) {
     47   TemporaryFile src_file;
     48   ASSERT_EQ(5, TEMP_FAILURE_RETRY(write(src_file.fd, "hello", 5)));
     49 
     50   TemporaryFile dst_file;
     51 
     52   off64_t offset = 2;
     53   size_t count = 2;
     54   ssize_t rc = sendfile64(dst_file.fd, src_file.fd, &offset, count);
     55   ASSERT_EQ(2, rc);
     56   ASSERT_EQ(4, offset);
     57 
     58   ASSERT_EQ(0, lseek(dst_file.fd, 0, SEEK_SET));
     59   char buf[3];
     60   buf[2] = '\0';
     61   ASSERT_EQ(2, TEMP_FAILURE_RETRY(read(dst_file.fd, &buf, 2)));
     62   ASSERT_STREQ("ll", buf);
     63 }
     64