gdbserver: turn target ops 'multifs_{open, readlink, unlink}' into methods

gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's multifs_open, multifs_readlink,
	multifs_unlink ops into methods of process_target.

	* target.h (struct process_stratum_target): Remove the target ops.
	(class process_target): Add the target ops.  Also add
	'supports_multifs'.
	* target.cc: Include "fcntl.h", "unistd.h", "sys/types.h", and
	"sys/stat.h".
	(process_target::supports_multifs): Define.
	(process_target::multifs_open): Define.
	(process_target::multifs_readlink): Define.
	(process_target::multifs_unlink): Define.

	Update the derived classes and callers below.

	* hostio.cc (handle_setfs): Update.
	(handle_open): Update.
	(handle_unlink): Update.
	(handle_readlink): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_multifs): Define.
	(linux_process_target::multifs_open): Define.
	(linux_process_target::multifs_readlink): Define.
	(linux_process_target::multifs_unlink): Define.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.

1 files changed, 30 insertions, 0 deletions

diff --git a/gdbserver/target.cc b/gdbserver/target.cc
index 3787e94..4c92fa6 100644
--- a/gdbserver/target.cc
+++ b/gdbserver/target.cc
@@ -22,6 +22,10 @@
 #include "tracepoint.h"
 #include "gdbsupport/byte-vector.h"
 #include "hostio.h"
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 
 process_stratum_target *the_target;
 
@@ -771,3 +775,29 @@ process_target::pid_to_exec_file (int pid)
 {
   gdb_assert_not_reached ("target op pid_to_exec_file not supported");
 }
+
+bool
+process_target::supports_multifs ()
+{
+  return false;
+}
+
+int
+process_target::multifs_open (int pid, const char *filename,
+			      int flags, mode_t mode)
+{
+  return open (filename, flags, mode);
+}
+
+int
+process_target::multifs_unlink (int pid, const char *filename)
+{
+  return unlink (filename);
+}
+
+ssize_t
+process_target::multifs_readlink (int pid, const char *filename,
+				  char *buf, size_t bufsiz)
+{
+  return readlink (filename, buf, bufsiz);
+}