diff options
Diffstat (limited to 'winsup/cygwin/fhandler_mailslot.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_mailslot.cc | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/winsup/cygwin/fhandler_mailslot.cc b/winsup/cygwin/fhandler_mailslot.cc deleted file mode 100644 index c0813df94..000000000 --- a/winsup/cygwin/fhandler_mailslot.cc +++ /dev/null @@ -1,170 +0,0 @@ -/* fhandler_mailslot.cc. See fhandler.h for a description of the fhandler classes. - - Copyright 2005, 2007, 2008, 2009 - Red Hat, Inc. - - This file is part of Cygwin. - - This software is a copyrighted work licensed under the terms of the - Cygwin license. Please consult the file "CYGWIN_LICENSE" for - details. */ - -#include "winsup.h" - -#include "cygerrno.h" -#include "path.h" -#include "fhandler.h" -#include "ntdll.h" - -/**********************************************************************/ -/* fhandler_mailslot */ - -fhandler_mailslot::fhandler_mailslot () - : fhandler_base () -{ -} - -int __stdcall -fhandler_mailslot::fstat (struct __stat64 *buf) -{ - debug_printf ("here"); - - fhandler_base::fstat (buf); - if (is_auto_device ()) - { - buf->st_mode = S_IFCHR | S_IRUSR | S_IWUSR; - buf->st_uid = geteuid32 (); - buf->st_gid = getegid32 (); - buf->st_nlink = 1; - buf->st_blksize = PREFERRED_IO_BLKSIZE; - time_as_timestruc_t (&buf->st_ctim); - buf->st_atim = buf->st_mtim = buf->st_birthtim = buf->st_ctim; - } - return 0; -} - -int -fhandler_mailslot::open (int flags, mode_t mode) -{ - int res = 0; - NTSTATUS status; - IO_STATUS_BLOCK io; - OBJECT_ATTRIBUTES attr; - HANDLE x; - LARGE_INTEGER timeout; - - switch (flags & O_ACCMODE) - { - case O_RDONLY: /* Server */ - timeout.QuadPart = (flags & O_NONBLOCK) ? 0LL : 0x8000000000000000LL; - status = NtCreateMailslotFile (&x, GENERIC_READ | SYNCHRONIZE, - pc.get_object_attr (attr, sec_none), - &io, FILE_SYNCHRONOUS_IO_NONALERT, - 0, 0, &timeout); - if (!NT_SUCCESS (status)) - { - /* FIXME: It's not possible to open the read side of an existing - mailslot again. You'll get a handle, but using it in ReadFile - returns ERROR_INVALID_PARAMETER. On the other hand, - NtCreateMailslotFile returns with STATUS_OBJECT_NAME_EXISTS if - the mailslot has been created already. - So this is an exclusive open for now. *Duplicating* read side - handles works, though, so it might be an option to duplicate - the handle from the first process to the current process for - opening the mailslot. */ -#if 0 - if (status != STATUS_OBJECT_NAME_COLLISION) - { - __seterrno_from_nt_status (status); - break; - } - status = NtOpenFile (&x, GENERIC_READ | SYNCHRONIZE, - pc.get_object_attr (attr, sec_none), &io, - FILE_SHARE_VALID_FLAGS, - FILE_SYNCHRONOUS_IO_NONALERT); -#endif - if (!NT_SUCCESS (status)) - { - __seterrno_from_nt_status (status); - break; - } - } - set_io_handle (x); - set_flags (flags, O_BINARY); - res = 1; - set_open_status (); - break; - case O_WRONLY: /* Client */ - /* The client is the DLL exclusively. Don't allow opening from - application code. */ - extern fhandler_mailslot *dev_kmsg; - if (this != dev_kmsg) - { - set_errno (EPERM); /* As on Linux. */ - break; - } - status = NtOpenFile (&x, GENERIC_WRITE | SYNCHRONIZE, - pc.get_object_attr (attr, sec_none), &io, - FILE_SHARE_VALID_FLAGS, - FILE_SYNCHRONOUS_IO_NONALERT); - if (!NT_SUCCESS (status)) - { - __seterrno_from_nt_status (status); - break; - } - set_io_handle (x); - set_flags (flags, O_BINARY); - res = 1; - set_open_status (); - break; - default: - set_errno (EINVAL); - break; - } - return res; -} - -ssize_t __stdcall -fhandler_mailslot::write (const void *ptr, size_t len) -{ - /* Check for 425/426 byte weirdness */ - if (len == 425 || len == 426) - { - char buf[427]; - buf[425] = buf[426] = '\0'; - memcpy (buf, ptr, len); - return raw_write (buf, 427); - } - return raw_write (ptr, len); -} - -int -fhandler_mailslot::ioctl (unsigned int cmd, void *buf) -{ - int res = -1; - NTSTATUS status; - IO_STATUS_BLOCK io; - - switch (cmd) - { - case FIONBIO: - { - FILE_MAILSLOT_SET_INFORMATION fmsi; - fmsi.ReadTimeout.QuadPart = buf ? 0LL : 0x8000000000000000LL; - status = NtSetInformationFile (get_handle (), &io, &fmsi, sizeof fmsi, - FileMailslotSetInformation); - if (!NT_SUCCESS (status)) - { - debug_printf ("NtSetInformationFile (%X): %08x", - fmsi.ReadTimeout.QuadPart, status); - __seterrno_from_nt_status (status); - break; - } - } - /*FALLTHRU*/ - default: - res = fhandler_base::ioctl (cmd, buf); - break; - } - return res; -} |