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Return unique inode numbers when calling stat/fstat on pipes and IP sockets

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* fhandler.h (class fhandler_base): Convert unique_id to int64_t.
        (fhandler_base::set_ino): New protected inline method.
        (fhandler_base::get_unique_id): Convert to int64_t.
        (fhandler_base::set_unique_id): New inline method taking int64_t.
        (fhandler_pipe::fstat): Declare.
        (fhandler_pipe::init): Take extra parameter.
        (fhandler_pipe::create): Ditto.
        * fhandler_socket.cc (fhandler_socket::init_events): Set inode number
        to serial number.
        (fhandler_socket::fstat): Set device to DEV_TCP_MAJOR.  Create st_ino
        from get_ino.
        * include/cygwin/signal.h (struct _sigcommune): Replace
        _si_pipe_fhandler with _si_pipe_unique_id.
        * pinfo.h (_pinfo::pipe_fhandler): Take unique id instead of HANDLE.
        * pinfo.cc (commune_process): Accommodate change to _si_pipe_unique_id.
        (_pinfo::commune_request): Ditto.
        (_pinfo::pipe_fhandler): Ditto.
        * pipe.cc (fhandler_pipe::init): Take unique id as argument and set
        inode number and unique_id from there.
        (fhandler_pipe::open): Rework to find any matching pipe from unique
        id in filename.
        (fhandler_pipe::get_proc_fd_name): Create filename using inode number.
        (fhandler_pipe::create): Generate and return unique id from process pid
        and pipe_unique_id.  In outer method, call init with additional unique
        id as parameter.
        (fhandler_pipe::fstat): New method.
        (pipe_worker): Accommodate using 64 bit inode number in filename.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2016-01-11 12:35:41 +01:00
parent 20ddde2f55
commit a10d969231
7 changed files with 88 additions and 45 deletions
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5
winsup/cygwin/fhandler_socket.cc
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@ -594,6 +594,7 @@ fhandler_socket::init_events ()
InterlockedIncrement (&socket_serial_number);
if (!new_serial_number) /* 0 is reserved for global mutex */
InterlockedIncrement (&socket_serial_number);
set_ino (new_serial_number);
RtlInitUnicodeString (&uname, sock_shared_name (name, new_serial_number));
InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
get_session_parent_dir (),
@ -937,8 +938,8 @@ fhandler_socket::fstat (struct stat *buf)
res = fhandler_base::fstat (buf);
if (!res)
{
buf->st_dev = 0;
buf->st_ino = (ino_t) ((uintptr_t) get_handle ());
buf->st_dev = FHDEV (DEV_TCP_MAJOR, 0);
buf->st_ino = (ino_t) get_ino ();
buf->st_mode = S_IFSOCK | S_IRWXU | S_IRWXG | S_IRWXO;
buf->st_size = 0;
}