/* * Server-side pipe management * * Copyright (C) 1998 Alexandre Julliard * Copyright (C) 2001 Mike McCormack * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * TODO: * message mode */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include #include #include #ifdef HAVE_SYS_SOCKET_H #include #endif #include #include #ifdef HAVE_POLL_H #include #endif #include "ntstatus.h" #define WIN32_NO_STATUS #include "windef.h" #include "winternl.h" #include "winioctl.h" #include "file.h" #include "handle.h" #include "thread.h" #include "request.h" #include "security.h" enum pipe_state { ps_idle_server, ps_wait_open, ps_connected_server, ps_wait_disconnect, ps_wait_connect }; struct named_pipe; struct pipe_server { struct object obj; /* object header */ struct fd *fd; /* pipe file descriptor */ struct fd *ioctl_fd; /* file descriptor for ioctls when not connected */ struct list entry; /* entry in named pipe servers list */ enum pipe_state state; /* server state */ struct pipe_client *client; /* client that this server is connected to */ struct named_pipe *pipe; struct timeout_user *flush_poll; unsigned int options; /* pipe options */ unsigned int pipe_flags; }; struct pipe_client { struct object obj; /* object header */ struct fd *fd; /* pipe file descriptor */ struct pipe_server *server; /* server that this client is connected to */ unsigned int flags; /* file flags */ unsigned int pipe_flags; }; struct named_pipe { struct object obj; /* object header */ unsigned int flags; unsigned int sharing; unsigned int maxinstances; unsigned int outsize; unsigned int insize; unsigned int instances; timeout_t timeout; struct list servers; /* list of servers using this pipe */ struct async_queue *waiters; /* list of clients waiting to connect */ }; struct named_pipe_device { struct object obj; /* object header */ struct fd *fd; /* pseudo-fd for ioctls */ struct namespace *pipes; /* named pipe namespace */ }; static void named_pipe_dump( struct object *obj, int verbose ); static unsigned int named_pipe_map_access( struct object *obj, unsigned int access ); static int named_pipe_link_name( struct object *obj, struct object_name *name, struct object *parent ); static struct object *named_pipe_open_file( struct object *obj, unsigned int access, unsigned int sharing, unsigned int options ); static void named_pipe_destroy( struct object *obj ); static const struct object_ops named_pipe_ops = { sizeof(struct named_pipe), /* size */ named_pipe_dump, /* dump */ no_get_type, /* get_type */ no_add_queue, /* add_queue */ NULL, /* remove_queue */ NULL, /* signaled */ NULL, /* satisfied */ no_signal, /* signal */ no_get_fd, /* get_fd */ named_pipe_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ no_lookup_name, /* lookup_name */ named_pipe_link_name, /* link_name */ default_unlink_name, /* unlink_name */ named_pipe_open_file, /* open_file */ no_close_handle, /* close_handle */ named_pipe_destroy /* destroy */ }; /* server end functions */ static void pipe_server_dump( struct object *obj, int verbose ); static struct fd *pipe_server_get_fd( struct object *obj ); static void pipe_server_destroy( struct object *obj); static obj_handle_t pipe_server_flush( struct fd *fd, const async_data_t *async, int blocking ); static enum server_fd_type pipe_server_get_fd_type( struct fd *fd ); static obj_handle_t pipe_server_ioctl( struct fd *fd, ioctl_code_t code, const async_data_t *async, int blocking ); static const struct object_ops pipe_server_ops = { sizeof(struct pipe_server), /* size */ pipe_server_dump, /* dump */ no_get_type, /* get_type */ add_queue, /* add_queue */ remove_queue, /* remove_queue */ default_fd_signaled, /* signaled */ no_satisfied, /* satisfied */ no_signal, /* signal */ pipe_server_get_fd, /* get_fd */ default_fd_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ no_lookup_name, /* lookup_name */ no_link_name, /* link_name */ NULL, /* unlink_name */ no_open_file, /* open_file */ fd_close_handle, /* close_handle */ pipe_server_destroy /* destroy */ }; static const struct fd_ops pipe_server_fd_ops = { default_fd_get_poll_events, /* get_poll_events */ default_poll_event, /* poll_event */ pipe_server_get_fd_type, /* get_fd_type */ no_fd_read, /* read */ no_fd_write, /* write */ pipe_server_flush, /* flush */ pipe_server_ioctl, /* ioctl */ default_fd_queue_async, /* queue_async */ default_fd_reselect_async /* reselect_async */ }; /* client end functions */ static void pipe_client_dump( struct object *obj, int verbose ); static int pipe_client_signaled( struct object *obj, struct wait_queue_entry *entry ); static struct fd *pipe_client_get_fd( struct object *obj ); static void pipe_client_destroy( struct object *obj ); static obj_handle_t pipe_client_flush( struct fd *fd, const async_data_t *async, int blocking ); static enum server_fd_type pipe_client_get_fd_type( struct fd *fd ); static const struct object_ops pipe_client_ops = { sizeof(struct pipe_client), /* size */ pipe_client_dump, /* dump */ no_get_type, /* get_type */ add_queue, /* add_queue */ remove_queue, /* remove_queue */ pipe_client_signaled, /* signaled */ no_satisfied, /* satisfied */ no_signal, /* signal */ pipe_client_get_fd, /* get_fd */ default_fd_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ no_lookup_name, /* lookup_name */ no_link_name, /* link_name */ NULL, /* unlink_name */ no_open_file, /* open_file */ fd_close_handle, /* close_handle */ pipe_client_destroy /* destroy */ }; static const struct fd_ops pipe_client_fd_ops = { default_fd_get_poll_events, /* get_poll_events */ default_poll_event, /* poll_event */ pipe_client_get_fd_type, /* get_fd_type */ no_fd_read, /* read */ no_fd_write, /* write */ pipe_client_flush, /* flush */ default_fd_ioctl, /* ioctl */ default_fd_queue_async, /* queue_async */ default_fd_reselect_async /* reselect_async */ }; static void named_pipe_device_dump( struct object *obj, int verbose ); static struct object_type *named_pipe_device_get_type( struct object *obj ); static struct fd *named_pipe_device_get_fd( struct object *obj ); static struct object *named_pipe_device_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attr ); static struct object *named_pipe_device_open_file( struct object *obj, unsigned int access, unsigned int sharing, unsigned int options ); static void named_pipe_device_destroy( struct object *obj ); static enum server_fd_type named_pipe_device_get_fd_type( struct fd *fd ); static obj_handle_t named_pipe_device_ioctl( struct fd *fd, ioctl_code_t code, const async_data_t *async_data, int blocking ); static const struct object_ops named_pipe_device_ops = { sizeof(struct named_pipe_device), /* size */ named_pipe_device_dump, /* dump */ named_pipe_device_get_type, /* get_type */ no_add_queue, /* add_queue */ NULL, /* remove_queue */ NULL, /* signaled */ no_satisfied, /* satisfied */ no_signal, /* signal */ named_pipe_device_get_fd, /* get_fd */ no_map_access, /* map_access */ default_get_sd, /* get_sd */ default_set_sd, /* set_sd */ named_pipe_device_lookup_name, /* lookup_name */ directory_link_name, /* link_name */ default_unlink_name, /* unlink_name */ named_pipe_device_open_file, /* open_file */ fd_close_handle, /* close_handle */ named_pipe_device_destroy /* destroy */ }; static const struct fd_ops named_pipe_device_fd_ops = { default_fd_get_poll_events, /* get_poll_events */ default_poll_event, /* poll_event */ named_pipe_device_get_fd_type, /* get_fd_type */ no_fd_read, /* read */ no_fd_write, /* write */ no_fd_flush, /* flush */ named_pipe_device_ioctl, /* ioctl */ default_fd_queue_async, /* queue_async */ default_fd_reselect_async /* reselect_async */ }; static void named_pipe_dump( struct object *obj, int verbose ) { fputs( "Named pipe\n", stderr ); } static unsigned int named_pipe_map_access( struct object *obj, unsigned int access ) { if (access & GENERIC_READ) access |= STANDARD_RIGHTS_READ; if (access & GENERIC_WRITE) access |= STANDARD_RIGHTS_WRITE | FILE_CREATE_PIPE_INSTANCE; if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE; if (access & GENERIC_ALL) access |= STANDARD_RIGHTS_ALL; return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL); } static void pipe_server_dump( struct object *obj, int verbose ) { struct pipe_server *server = (struct pipe_server *) obj; assert( obj->ops == &pipe_server_ops ); fprintf( stderr, "Named pipe server pipe=%p state=%d\n", server->pipe, server->state ); } static void pipe_client_dump( struct object *obj, int verbose ) { struct pipe_client *client = (struct pipe_client *) obj; assert( obj->ops == &pipe_client_ops ); fprintf( stderr, "Named pipe client server=%p\n", client->server ); } static int pipe_client_signaled( struct object *obj, struct wait_queue_entry *entry ) { struct pipe_client *client = (struct pipe_client *) obj; return client->fd && is_fd_signaled(client->fd); } static void named_pipe_destroy( struct object *obj) { struct named_pipe *pipe = (struct named_pipe *) obj; assert( list_empty( &pipe->servers ) ); assert( !pipe->instances ); free_async_queue( pipe->waiters ); } static struct fd *pipe_client_get_fd( struct object *obj ) { struct pipe_client *client = (struct pipe_client *) obj; if (client->fd) return (struct fd *) grab_object( client->fd ); set_error( STATUS_PIPE_DISCONNECTED ); return NULL; } static void set_server_state( struct pipe_server *server, enum pipe_state state ) { server->state = state; switch(state) { case ps_connected_server: case ps_wait_disconnect: assert( server->fd ); break; case ps_wait_open: case ps_idle_server: assert( !server->fd ); set_no_fd_status( server->ioctl_fd, STATUS_PIPE_LISTENING ); break; case ps_wait_connect: assert( !server->fd ); set_no_fd_status( server->ioctl_fd, STATUS_PIPE_DISCONNECTED ); break; } } static struct fd *pipe_server_get_fd( struct object *obj ) { struct pipe_server *server = (struct pipe_server *) obj; return (struct fd *)grab_object( server->fd ? server->fd : server->ioctl_fd ); } static void notify_empty( struct pipe_server *server ) { if (!server->flush_poll) return; assert( server->state == ps_connected_server ); remove_timeout_user( server->flush_poll ); server->flush_poll = NULL; fd_async_wake_up( server->fd, ASYNC_TYPE_WAIT, STATUS_SUCCESS ); } static void do_disconnect( struct pipe_server *server ) { /* we may only have a server fd, if the client disconnected */ if (server->client) { assert( server->client->server == server ); assert( server->client->fd ); release_object( server->client->fd ); server->client->fd = NULL; } assert( server->fd ); shutdown( get_unix_fd( server->fd ), SHUT_RDWR ); release_object( server->fd ); server->fd = NULL; } static void pipe_server_destroy( struct object *obj) { struct pipe_server *server = (struct pipe_server *)obj; assert( obj->ops == &pipe_server_ops ); if (server->fd) { notify_empty( server ); do_disconnect( server ); } if (server->client) { server->client->server = NULL; server->client = NULL; } assert( server->pipe->instances ); server->pipe->instances--; if (server->ioctl_fd) release_object( server->ioctl_fd ); list_remove( &server->entry ); release_object( server->pipe ); } static void pipe_client_destroy( struct object *obj) { struct pipe_client *client = (struct pipe_client *)obj; struct pipe_server *server = client->server; assert( obj->ops == &pipe_client_ops ); if (server) { notify_empty( server ); switch(server->state) { case ps_connected_server: /* Don't destroy the server's fd here as we can't do a successful flush without it. */ set_server_state( server, ps_wait_disconnect ); break; case ps_idle_server: case ps_wait_open: case ps_wait_disconnect: case ps_wait_connect: assert( 0 ); } assert( server->client ); server->client = NULL; client->server = NULL; } if (client->fd) release_object( client->fd ); } static void named_pipe_device_dump( struct object *obj, int verbose ) { fputs( "Named pipe device\n", stderr ); } static struct object_type *named_pipe_device_get_type( struct object *obj ) { static const WCHAR name[] = {'D','e','v','i','c','e'}; static const struct unicode_str str = { name, sizeof(name) }; return get_object_type( &str ); } static struct fd *named_pipe_device_get_fd( struct object *obj ) { struct named_pipe_device *device = (struct named_pipe_device *)obj; return (struct fd *)grab_object( device->fd ); } static struct object *named_pipe_device_lookup_name( struct object *obj, struct unicode_str *name, unsigned int attr ) { struct named_pipe_device *device = (struct named_pipe_device*)obj; struct object *found; assert( obj->ops == &named_pipe_device_ops ); assert( device->pipes ); if (!name) return NULL; /* open the device itself */ if ((found = find_object( device->pipes, name, attr | OBJ_CASE_INSENSITIVE ))) name->len = 0; return found; } static struct object *named_pipe_device_open_file( struct object *obj, unsigned int access, unsigned int sharing, unsigned int options ) { return grab_object( obj ); } static void named_pipe_device_destroy( struct object *obj ) { struct named_pipe_device *device = (struct named_pipe_device*)obj; assert( obj->ops == &named_pipe_device_ops ); if (device->fd) release_object( device->fd ); free( device->pipes ); } static enum server_fd_type named_pipe_device_get_fd_type( struct fd *fd ) { return FD_TYPE_DEVICE; } struct object *create_named_pipe_device( struct object *root, const struct unicode_str *name ) { struct named_pipe_device *dev; if ((dev = create_named_object( root, &named_pipe_device_ops, name, 0, NULL )) && get_error() != STATUS_OBJECT_NAME_EXISTS) { dev->pipes = NULL; if (!(dev->fd = alloc_pseudo_fd( &named_pipe_device_fd_ops, &dev->obj, 0 )) || !(dev->pipes = create_namespace( 7 ))) { release_object( dev ); dev = NULL; } } return &dev->obj; } static int pipe_data_remaining( struct pipe_server *server ) { struct pollfd pfd; int fd; assert( server->client ); fd = get_unix_fd( server->client->fd ); if (fd < 0) return 0; pfd.fd = fd; pfd.events = POLLIN; pfd.revents = 0; if (0 > poll( &pfd, 1, 0 )) return 0; return pfd.revents&POLLIN; } static void check_flushed( void *arg ) { struct pipe_server *server = (struct pipe_server*) arg; if (pipe_data_remaining( server )) { server->flush_poll = add_timeout_user( -TICKS_PER_SEC / 10, check_flushed, server ); } else { server->flush_poll = NULL; fd_async_wake_up( server->fd, ASYNC_TYPE_WAIT, STATUS_SUCCESS ); } } static obj_handle_t pipe_server_flush( struct fd *fd, const async_data_t *async_data, int blocking ) { struct pipe_server *server = get_fd_user( fd ); obj_handle_t handle = 0; struct async *async; if (!server || server->state != ps_connected_server) return 0; if (!pipe_data_remaining( server )) return 0; if ((async = fd_queue_async( server->fd, async_data, ASYNC_TYPE_WAIT ))) { /* there's no unix way to be alerted when a pipe becomes empty, so resort to polling */ if (!server->flush_poll) server->flush_poll = add_timeout_user( -TICKS_PER_SEC / 10, check_flushed, server ); if (blocking) handle = alloc_handle( current->process, async, SYNCHRONIZE, 0 ); release_object( async ); set_error( STATUS_PENDING ); } return handle; } static obj_handle_t pipe_client_flush( struct fd *fd, const async_data_t *async, int blocking ) { /* FIXME: what do we have to do for this? */ return 0; } static inline int is_overlapped( unsigned int options ) { return !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)); } static enum server_fd_type pipe_server_get_fd_type( struct fd *fd ) { return FD_TYPE_PIPE; } static enum server_fd_type pipe_client_get_fd_type( struct fd *fd ) { return FD_TYPE_PIPE; } static obj_handle_t pipe_server_ioctl( struct fd *fd, ioctl_code_t code, const async_data_t *async_data, int blocking ) { struct pipe_server *server = get_fd_user( fd ); struct async *async; obj_handle_t wait_handle = 0; switch(code) { case FSCTL_PIPE_LISTEN: switch(server->state) { case ps_idle_server: case ps_wait_connect: if ((async = fd_queue_async( server->ioctl_fd, async_data, ASYNC_TYPE_WAIT ))) { if (blocking) wait_handle = alloc_handle( current->process, async, SYNCHRONIZE, 0 ); set_server_state( server, ps_wait_open ); if (server->pipe->waiters) async_wake_up( server->pipe->waiters, STATUS_SUCCESS ); release_object( async ); set_error( STATUS_PENDING ); return wait_handle; } break; case ps_connected_server: set_error( STATUS_PIPE_CONNECTED ); break; case ps_wait_disconnect: set_error( STATUS_NO_DATA_DETECTED ); break; case ps_wait_open: set_error( STATUS_INVALID_HANDLE ); break; } return 0; case FSCTL_PIPE_DISCONNECT: switch(server->state) { case ps_connected_server: assert( server->client ); assert( server->client->fd ); notify_empty( server ); /* dump the client and server fds - client loses all waiting data */ do_disconnect( server ); server->client->server = NULL; server->client = NULL; set_server_state( server, ps_wait_connect ); break; case ps_wait_disconnect: assert( !server->client ); do_disconnect( server ); set_server_state( server, ps_wait_connect ); break; case ps_idle_server: case ps_wait_open: set_error( STATUS_PIPE_LISTENING ); break; case ps_wait_connect: set_error( STATUS_PIPE_DISCONNECTED ); break; } return 0; default: return default_fd_ioctl( fd, code, async_data, blocking ); } } static struct pipe_server *get_pipe_server_obj( struct process *process, obj_handle_t handle, unsigned int access ) { struct object *obj; obj = get_handle_obj( process, handle, access, &pipe_server_ops ); return (struct pipe_server *) obj; } static struct pipe_server *create_pipe_server( struct named_pipe *pipe, unsigned int options, unsigned int pipe_flags ) { struct pipe_server *server; server = alloc_object( &pipe_server_ops ); if (!server) return NULL; server->fd = NULL; server->pipe = pipe; server->client = NULL; server->flush_poll = NULL; server->options = options; server->pipe_flags = pipe_flags; list_add_head( &pipe->servers, &server->entry ); grab_object( pipe ); if (!(server->ioctl_fd = alloc_pseudo_fd( &pipe_server_fd_ops, &server->obj, options ))) { release_object( server ); return NULL; } set_server_state( server, ps_idle_server ); return server; } static struct pipe_client *create_pipe_client( unsigned int flags, unsigned int pipe_flags ) { struct pipe_client *client; client = alloc_object( &pipe_client_ops ); if (!client) return NULL; client->fd = NULL; client->server = NULL; client->flags = flags; client->pipe_flags = pipe_flags; return client; } static struct pipe_server *find_available_server( struct named_pipe *pipe ) { struct pipe_server *server; /* look for pipe servers that are listening */ LIST_FOR_EACH_ENTRY( server, &pipe->servers, struct pipe_server, entry ) { if (server->state == ps_wait_open) return (struct pipe_server *)grab_object( server ); } /* fall back to pipe servers that are idle */ LIST_FOR_EACH_ENTRY( server, &pipe->servers, struct pipe_server, entry ) { if (server->state == ps_idle_server) return (struct pipe_server *)grab_object( server ); } return NULL; } static int named_pipe_link_name( struct object *obj, struct object_name *name, struct object *parent ) { struct named_pipe_device *dev = (struct named_pipe_device *)parent; if (parent->ops != &named_pipe_device_ops) { set_error( STATUS_OBJECT_NAME_INVALID ); return 0; } namespace_add( dev->pipes, name ); name->parent = grab_object( parent ); return 1; } static struct object *named_pipe_open_file( struct object *obj, unsigned int access, unsigned int sharing, unsigned int options ) { struct named_pipe *pipe = (struct named_pipe *)obj; struct pipe_server *server; struct pipe_client *client; unsigned int pipe_sharing; int fds[2]; if (!(server = find_available_server( pipe ))) { set_error( STATUS_PIPE_NOT_AVAILABLE ); return NULL; } pipe_sharing = server->pipe->sharing; if (((access & GENERIC_READ) && !(pipe_sharing & FILE_SHARE_READ)) || ((access & GENERIC_WRITE) && !(pipe_sharing & FILE_SHARE_WRITE))) { set_error( STATUS_ACCESS_DENIED ); release_object( server ); return NULL; } if ((client = create_pipe_client( options, pipe->flags ))) { if (!socketpair( PF_UNIX, SOCK_STREAM, 0, fds )) { assert( !server->fd ); /* for performance reasons, only set nonblocking mode when using * overlapped I/O. Otherwise, we will be doing too much busy * looping */ if (is_overlapped( options )) fcntl( fds[1], F_SETFL, O_NONBLOCK ); if (is_overlapped( server->options )) fcntl( fds[0], F_SETFL, O_NONBLOCK ); if (pipe->insize) { setsockopt( fds[0], SOL_SOCKET, SO_RCVBUF, &pipe->insize, sizeof(pipe->insize) ); setsockopt( fds[1], SOL_SOCKET, SO_RCVBUF, &pipe->insize, sizeof(pipe->insize) ); } if (pipe->outsize) { setsockopt( fds[0], SOL_SOCKET, SO_SNDBUF, &pipe->outsize, sizeof(pipe->outsize) ); setsockopt( fds[1], SOL_SOCKET, SO_SNDBUF, &pipe->outsize, sizeof(pipe->outsize) ); } client->fd = create_anonymous_fd( &pipe_client_fd_ops, fds[1], &client->obj, options ); server->fd = create_anonymous_fd( &pipe_server_fd_ops, fds[0], &server->obj, server->options ); if (client->fd && server->fd) { allow_fd_caching( client->fd ); allow_fd_caching( server->fd ); fd_copy_completion( server->ioctl_fd, server->fd ); if (server->state == ps_wait_open) fd_async_wake_up( server->ioctl_fd, ASYNC_TYPE_WAIT, STATUS_SUCCESS ); set_server_state( server, ps_connected_server ); server->client = client; client->server = server; } else { release_object( client ); client = NULL; } } else { file_set_error(); release_object( client ); client = NULL; } } release_object( server ); return &client->obj; } static obj_handle_t named_pipe_device_ioctl( struct fd *fd, ioctl_code_t code, const async_data_t *async_data, int blocking ) { struct named_pipe_device *device = get_fd_user( fd ); switch(code) { case FSCTL_PIPE_WAIT: { const FILE_PIPE_WAIT_FOR_BUFFER *buffer = get_req_data(); data_size_t size = get_req_data_size(); obj_handle_t wait_handle = 0; struct named_pipe *pipe; struct pipe_server *server; struct unicode_str name; if (size < sizeof(*buffer) || size < FIELD_OFFSET(FILE_PIPE_WAIT_FOR_BUFFER, Name[buffer->NameLength/sizeof(WCHAR)])) { set_error( STATUS_INVALID_PARAMETER ); return 0; } name.str = buffer->Name; name.len = (buffer->NameLength / sizeof(WCHAR)) * sizeof(WCHAR); if (!(pipe = open_named_object( &device->obj, &named_pipe_ops, &name, 0 ))) return 0; if (!(server = find_available_server( pipe ))) { struct async *async; if (!pipe->waiters && !(pipe->waiters = create_async_queue( NULL ))) goto done; if ((async = create_async( current, pipe->waiters, async_data ))) { timeout_t when = buffer->TimeoutSpecified ? buffer->Timeout.QuadPart : pipe->timeout; async_set_timeout( async, when, STATUS_IO_TIMEOUT ); if (blocking) wait_handle = alloc_handle( current->process, async, SYNCHRONIZE, 0 ); release_object( async ); set_error( STATUS_PENDING ); } } else release_object( server ); done: release_object( pipe ); return wait_handle; } default: return default_fd_ioctl( fd, code, async_data, blocking ); } } DECL_HANDLER(create_named_pipe) { struct named_pipe *pipe; struct pipe_server *server; struct unicode_str name; struct object *root; const struct security_descriptor *sd; const struct object_attributes *objattr = get_req_object_attributes( &sd, &name, &root ); if (!objattr) return; if (!req->sharing || (req->sharing & ~(FILE_SHARE_READ | FILE_SHARE_WRITE)) || (!(req->flags & NAMED_PIPE_MESSAGE_STREAM_WRITE) && (req->flags & NAMED_PIPE_MESSAGE_STREAM_READ))) { if (root) release_object( root ); set_error( STATUS_INVALID_PARAMETER ); return; } if (!name.len) /* pipes need a root directory even without a name */ { if (!objattr->rootdir) { set_error( STATUS_OBJECT_PATH_SYNTAX_BAD ); return; } if (!(root = get_directory_obj( current->process, objattr->rootdir ))) return; } pipe = create_named_object( root, &named_pipe_ops, &name, objattr->attributes | OBJ_OPENIF, NULL ); if (root) release_object( root ); if (!pipe) return; if (get_error() != STATUS_OBJECT_NAME_EXISTS) { /* initialize it if it didn't already exist */ pipe->instances = 0; pipe->waiters = NULL; list_init( &pipe->servers ); pipe->insize = req->insize; pipe->outsize = req->outsize; pipe->maxinstances = req->maxinstances; pipe->timeout = req->timeout; pipe->flags = req->flags & NAMED_PIPE_MESSAGE_STREAM_WRITE; pipe->sharing = req->sharing; } else { if (pipe->maxinstances <= pipe->instances) { set_error( STATUS_INSTANCE_NOT_AVAILABLE ); release_object( pipe ); return; } if (pipe->sharing != req->sharing) { set_error( STATUS_ACCESS_DENIED ); release_object( pipe ); return; } clear_error(); /* clear the name collision */ } server = create_pipe_server( pipe, req->options, req->flags ); if (server) { reply->handle = alloc_handle( current->process, server, req->access, objattr->attributes ); server->pipe->instances++; if (sd) default_set_sd( &server->obj, sd, OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION ); release_object( server ); } release_object( pipe ); } DECL_HANDLER(get_named_pipe_info) { struct pipe_server *server; struct pipe_client *client = NULL; server = get_pipe_server_obj( current->process, req->handle, FILE_READ_ATTRIBUTES ); if (!server) { if (get_error() != STATUS_OBJECT_TYPE_MISMATCH) return; clear_error(); client = (struct pipe_client *)get_handle_obj( current->process, req->handle, 0, &pipe_client_ops ); if (!client) return; server = client->server; } reply->flags = client ? client->pipe_flags : server->pipe_flags; if (server) { reply->sharing = server->pipe->sharing; reply->maxinstances = server->pipe->maxinstances; reply->instances = server->pipe->instances; reply->insize = server->pipe->insize; reply->outsize = server->pipe->outsize; } if (client) release_object(client); else { reply->flags |= NAMED_PIPE_SERVER_END; release_object(server); } } DECL_HANDLER(set_named_pipe_info) { struct pipe_server *server; struct pipe_client *client = NULL; server = get_pipe_server_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES ); if (!server) { if (get_error() != STATUS_OBJECT_TYPE_MISMATCH) return; clear_error(); client = (struct pipe_client *)get_handle_obj( current->process, req->handle, 0, &pipe_client_ops ); if (!client) return; if (!(server = client->server)) { release_object( client ); return; } } if ((req->flags & ~(NAMED_PIPE_MESSAGE_STREAM_READ | NAMED_PIPE_NONBLOCKING_MODE)) || ((req->flags & NAMED_PIPE_MESSAGE_STREAM_READ) && !(server->pipe->flags & NAMED_PIPE_MESSAGE_STREAM_WRITE))) { set_error( STATUS_INVALID_PARAMETER ); } else if (client) { client->pipe_flags = server->pipe->flags | req->flags; } else { server->pipe_flags = server->pipe->flags | req->flags; } if (client) release_object(client); else release_object(server); }