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* devices.in (dev_storage): Map /dev/zero and /dev/full to \Device\Null.

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* devices.cc: Regenerate.
	* dtable.h (struct dtable): Make fhandler_base friend, rather
	than fhandler_disk_file.
	* fhandler.cc (fhandler_base::open_with_arch): Create unique id.
	(fhandler_base::cleanup): Call del_my_locks.
	(fhandler_base::fcntl): Handle F_GETLK, F_SETLK and F_SETLKW.
	* fhandler.h (fhandler_base::get_dev): Return real device number.
	(fhandler_base::set_unique_id): New inline method.
	(fhandler_disk_file::lock): Drop declaration.
	(fhandler_disk_file::get_dev): New method, return pc.fs_serial_number.
	(fhandler_dev_zero::open): Drop declaration.
	* fhandler_disk_file.cc (fhandler_disk_file::close): Move
	del_my_locks call to fhandler_base::open_with_arch.
	(fhandler_disk_file::fcntl): Move handling of locking commands to
	fhandler_base::fcntl.
	(fhandler_base::open_fs): Drop call to NtAllocateLocallyUniqueId.
	* fhandler_zero.cc (fhandler_dev_zero::open): Remove so that default
	fhandler_base::open is used to open \Device\Null.
	* flock.cc (fixup_lockf_after_exec): Finding a single fhandler is
	enough here.
	(fhandler_base::lock): Replace fhandler_disk_file::lock.  Refuse to lock
	nohandle devices.  Handle read/write test using POSIX flags.  Explain
	why.  Never fail on SEEK_CUR or SEEK_END, rather assume position 0,
	just as Linux.
	* net.cc (fdsock): Create unique id.
This commit is contained in:
Corinna Vinschen
2013-10-24 09:41:17 +00:00
parent 72a386373e
commit 95ff6fc6da
11 changed files with 109 additions and 64 deletions
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17
winsup/cygwin/fhandler_disk_file.cc
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@@ -1401,9 +1401,6 @@ fhandler_disk_file::close ()
/* Close extra pread/pwrite handle, if it exists. */
if (prw_handle)
NtClose (prw_handle);
/* Delete all POSIX locks on the file. Delete all flock locks on the
file if this is the last reference to this file. */
del_my_locks (on_close);
return fhandler_base::close ();
}
@@ -1414,20 +1411,11 @@ fhandler_disk_file::fcntl (int cmd, intptr_t arg)
switch (cmd)
{
case F_LCK_MANDATORY:
case F_LCK_MANDATORY: /* Mandatory locking only works on files. */
mandatory_locking (!!arg);
need_fork_fixup (true);
res = 0;
break;
case F_GETLK:
case F_SETLK:
case F_SETLKW:
{
struct flock *fl = (struct flock *) arg;
fl->l_type &= F_RDLCK | F_WRLCK | F_UNLCK;
res = mandatory_locking () ? mand_lock (cmd, fl) : lock (cmd, fl);
}
break;
default:
res = fhandler_base::fcntl (cmd, arg);
break;
@@ -1487,9 +1475,6 @@ fhandler_base::open_fs (int flags, mode_t mode)
}
ino = pc.get_ino_by_handle (get_handle ());
/* A unique ID is necessary to recognize fhandler entries which are
duplicated by dup(2) or fork(2). */
NtAllocateLocallyUniqueId ((PLUID) &unique_id);
out:
syscall_printf ("%d = fhandler_disk_file::open(%S, %y)", res,