2 * captive vfs 'file' interface to reactos
3 * Copyright (C) 2002-2003 Jan Kratochvil <project-captive@jankratochvil.net>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; exactly version 2 of June 1991 is required
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "captive/client-file.h" /* self */
24 #include <glib/gmessages.h>
25 #include "captive/unicode.h"
26 #include "reactos/ntos/types.h" /* for HANDLE */
27 #include "reactos/ddk/iotypes.h" /* for IO_STATUS_BLOCK */
28 #include "reactos/ddk/iofuncs.h" /* for IoCreateFile() */
31 static gpointer captive_file_object_parent_class=NULL;
34 static GnomeVFSResult captive_file_close(CaptiveFileObject *captive_file_object);
36 static void captive_file_object_finalize(CaptiveFileObject *captive_file_object)
38 GnomeVFSResult errvfsresult;
40 g_return_if_fail(captive_file_object!=NULL);
42 errvfsresult=captive_file_close(captive_file_object);
43 g_assert(errvfsresult==GNOME_VFS_OK);
45 G_OBJECT_CLASS(captive_file_object_parent_class)->finalize((GObject *)captive_file_object);
49 static void captive_file_object_class_init(CaptiveFileObjectClass *class)
51 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
53 captive_file_object_parent_class=g_type_class_ref(G_TYPE_OBJECT);
54 gobject_class->finalize=(void (*)(GObject *object))captive_file_object_finalize;
58 static void captive_file_object_init(CaptiveFileObject *captive_file_object)
60 captive_file_object->file_Handle=NULL;
64 GType captive_file_object_get_type(void)
66 static GType captive_file_object_type=0;
68 if (!captive_file_object_type) {
69 static const GTypeInfo captive_file_object_info={
70 sizeof(CaptiveFileObjectClass),
72 NULL, /* base_finalize */
73 (GClassInitFunc)captive_file_object_class_init,
74 NULL, /* class_finalize */
75 NULL, /* class_data */
76 sizeof(CaptiveFileObject),
78 (GInstanceInitFunc)captive_file_object_init,
81 captive_file_object_type=g_type_register_static(G_TYPE_OBJECT,
82 "CaptiveFileObject",&captive_file_object_info,0);
85 return captive_file_object_type;
89 GnomeVFSResult captive_file_new_open
90 (CaptiveFileObject **captive_file_object_return,const gchar *pathname,GnomeVFSOpenMode mode)
92 IO_STATUS_BLOCK file_IoStatusBlock;
93 GnomeVFSResult errvfsresult;
94 OBJECT_ATTRIBUTES file_ObjectAttributes;
96 CaptiveFileObject *captive_file_object;
99 if (CAPTIVE_IS_SANDBOX_PARENT())
100 return captive_sandbox_parent_file_new_open(captive_file_object_return,pathname,mode);
102 g_return_val_if_fail(captive_file_object_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
103 g_return_val_if_fail(pathname!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
105 *captive_file_object_return=NULL;
107 errvfsresult=captive_ObjectAttributes_init(pathname,&file_ObjectAttributes);
108 g_return_val_if_fail(errvfsresult==GNOME_VFS_OK,errvfsresult);
112 &file_Handle, /* FileHandle */
114 |(!(mode&GNOME_VFS_OPEN_READ ) ? 0 : FILE_READ_DATA)
115 |(!(mode&GNOME_VFS_OPEN_WRITE) ? 0 : FILE_WRITE_DATA | FILE_APPEND_DATA)
116 , /* DesiredAccess */
117 &file_ObjectAttributes, /* ObjectAttributes */
118 &file_IoStatusBlock, /* IoStatusBlock */
119 NULL, /* AllocationSize; ignored for open */
120 FILE_ATTRIBUTE_NORMAL, /* FileAttributes; ignored for open */
121 FILE_SHARE_WRITE, /* ShareAccess; 0 means exclusive */
122 FILE_OPEN, /* CreateDisposition */
123 /* FILE_SYNCHRONOUS_IO_{,NON}ALERT: We need to allow W32 filesystem
124 * any waits to not to let it return STATUS_CANT_WAIT us.
125 * Alertability should have only effect on asynchronous events
126 * from KeWaitForSingleObject() by setting/clearing its parameter 'Alertable'.
128 FILE_SYNCHRONOUS_IO_ALERT, /* CreateOptions */
131 CreateFileTypeNone, /* CreateFileType */
132 NULL, /* ExtraCreateParameters */
134 g_free(file_ObjectAttributes.ObjectName); /* left from captive_file_uri_parent_init() */
135 g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
136 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
137 g_return_val_if_fail(file_IoStatusBlock.Information==FILE_OPENED,GNOME_VFS_ERROR_GENERIC);
139 captive_file_object=g_object_new(
140 CAPTIVE_FILE_TYPE_OBJECT, /* object_type */
141 NULL); /* first_property_name; FIXME: support properties */
143 captive_file_object->file_Handle=file_Handle;
144 captive_file_object->offset=0;
146 *captive_file_object_return=captive_file_object;
151 static GnomeVFSResult captive_file_close(CaptiveFileObject *captive_file_object)
156 if (CAPTIVE_IS_SANDBOX_PARENT())
157 return captive_sandbox_parent_file_close(captive_file_object);
159 g_return_val_if_fail(captive_file_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
160 g_return_val_if_fail(captive_file_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS); /* already closed */
162 file_Handle=captive_file_object->file_Handle;
163 captive_file_object->file_Handle=NULL;
164 err=NtClose(file_Handle);
165 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
171 GnomeVFSResult captive_file_read
172 (CaptiveFileObject *captive_file_object,gpointer buffer,GnomeVFSFileSize num_bytes,GnomeVFSFileSize *bytes_read_return)
175 IO_STATUS_BLOCK file_IoStatusBlock;
176 LARGE_INTEGER file_offset;
178 if (CAPTIVE_IS_SANDBOX_PARENT())
179 return captive_sandbox_parent_file_read(captive_file_object,buffer,num_bytes,bytes_read_return);
181 g_return_val_if_fail(captive_file_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
182 g_return_val_if_fail(captive_file_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
183 g_return_val_if_fail(buffer!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
184 g_return_val_if_fail(bytes_read_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
185 g_return_val_if_fail(num_bytes==(ULONG)num_bytes,GNOME_VFS_ERROR_BAD_PARAMETERS);
187 file_offset.QuadPart=captive_file_object->offset;
189 captive_file_object->file_Handle, /* FileHandle */
190 NULL, /* EventHandle; completion signalling; optional */
191 NULL, /* ApcRoutine; optional */
192 NULL, /* ApcContext; optional */
193 &file_IoStatusBlock, /* IoStatusBlock */
195 num_bytes, /* Length */
196 &file_offset, /* ByteOffset */
197 NULL); /* Key; NULL means no file locking key */
198 if (err==STATUS_END_OF_FILE) {
199 g_return_val_if_fail(file_IoStatusBlock.Status==STATUS_END_OF_FILE,GNOME_VFS_ERROR_GENERIC);
200 g_return_val_if_fail(file_IoStatusBlock.Information==0,GNOME_VFS_ERROR_GENERIC);
201 *bytes_read_return=0;
202 return GNOME_VFS_ERROR_EOF;
204 g_return_val_if_fail(NT_SUCCESS(err)==NT_SUCCESS(file_IoStatusBlock.Status),GNOME_VFS_ERROR_GENERIC);
205 g_return_val_if_fail(NT_SUCCESS(err),GNOME_VFS_ERROR_GENERIC);
206 g_return_val_if_fail(file_IoStatusBlock.Information<=num_bytes,GNOME_VFS_ERROR_GENERIC);
208 captive_file_object->offset+=file_IoStatusBlock.Information;
209 *bytes_read_return=file_IoStatusBlock.Information;
214 GnomeVFSResult captive_file_seek
215 (CaptiveFileObject *captive_file_object,GnomeVFSSeekPosition whence,GnomeVFSFileOffset offset)
217 if (CAPTIVE_IS_SANDBOX_PARENT())
218 return captive_sandbox_parent_file_seek(captive_file_object,whence,offset);
220 g_return_val_if_fail(captive_file_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
221 g_return_val_if_fail(captive_file_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
224 case GNOME_VFS_SEEK_START:
225 captive_file_object->offset=offset;
227 case GNOME_VFS_SEEK_CURRENT:
229 || (offset>0 && (captive_file_object->offset+offset)<captive_file_object->offset)
230 || (offset<0 && (captive_file_object->offset+offset)>captive_file_object->offset))
231 return GNOME_VFS_ERROR_BAD_PARAMETERS;
232 captive_file_object->offset+=offset;
234 case GNOME_VFS_SEEK_END:
235 g_assert_not_reached(); /* NOT IMPLEMENTED YET */
238 g_return_val_if_reached(GNOME_VFS_ERROR_BAD_PARAMETERS);
245 GnomeVFSResult captive_file_tell(CaptiveFileObject *captive_file_object,GnomeVFSFileOffset *offset_return)
247 if (CAPTIVE_IS_SANDBOX_PARENT())
248 return captive_sandbox_parent_file_tell(captive_file_object,offset_return);
250 g_return_val_if_fail(captive_file_object!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
251 g_return_val_if_fail(captive_file_object->file_Handle!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
252 g_return_val_if_fail(offset_return!=NULL,GNOME_VFS_ERROR_BAD_PARAMETERS);
254 *offset_return=captive_file_object->offset;