[NaCl SDK] Map active fds to absolute paths.

native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc

Index: native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc
diff --git a/native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc b/native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc
index 44c158d65e41dcb85e4e22cd800eb5a7f51245df..ced9e29f1f34e8df45609a32fa2c19ac902c1ce9 100644
--- a/native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc
+++ b/native_client_sdk/src/tests/nacl_io_test/kernel_proxy_test.cc
@@ -282,6 +282,42 @@ TEST_F(KernelProxyTest, WorkingDirectory) {
   EXPECT_STREQ("/foo", text);
 }
 
+TEST_F(KernelProxyTest, FDPathMapping) {
+  char text[1024];
+
+  int fd1, fd2, fd3, fd4;
+
+  EXPECT_EQ(0, ki_mkdir("/foo", S_IREAD | S_IWRITE));
+  EXPECT_EQ(0, ki_mkdir("/foo/bar", S_IREAD | S_IWRITE));
+  EXPECT_EQ(0, ki_mkdir("/example", S_IREAD | S_IWRITE));
+  ki_chdir("/foo");
+
+  fd1 = ki_open("/example", O_RDONLY);
+  EXPECT_NE(-1, fd1);
+  EXPECT_EQ(ki_fchdir(fd1), 0);
+  EXPECT_EQ(text, ki_getcwd(text, sizeof(text)));
+  EXPECT_STREQ("/example", text);
+
+  EXPECT_EQ(0, ki_chdir("/foo"));
+  fd2 = ki_open("../example", O_RDONLY);
+  EXPECT_NE(-1, fd2);
+  EXPECT_EQ(0, ki_fchdir(fd2));
+  EXPECT_EQ(text, ki_getcwd(text, sizeof(text)));
+  EXPECT_STREQ("/example", text);
+
+  EXPECT_EQ(0, ki_chdir("/foo"));
+  fd3 = ki_open("../test", O_CREAT | O_RDWR);
+  EXPECT_NE(-1, fd3);
+  EXPECT_EQ(-1, ki_fchdir(fd3));
+  EXPECT_EQ(ENOTDIR, errno);
+
+  EXPECT_EQ(0, ki_chdir("/foo"));
+  fd4 = ki_open("bar", O_RDONLY);
+  EXPECT_EQ(0, ki_fchdir(fd4));
+  EXPECT_EQ(text, ki_getcwd(text, sizeof(text)));
+  EXPECT_STREQ("/foo/bar", text);

[binji, 2014/01/07 21:40:29]

can you add tests for using fchdir on a fd that was created with dup and dup2?

+}
+
 TEST_F(KernelProxyTest, MemMountIO) {
   char text[1024];
   int fd1, fd2, fd3;