2 Unix SMB/CIFS implementation.
4 POSIX NTVFS backend - open and close
6 Copyright (C) Andrew Tridgell 2004
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "include/includes.h"
24 #include "vfs_posix.h"
28 find open file handle given fnum
30 struct pvfs_file *pvfs_find_fd(struct pvfs_state *pvfs,
31 struct smbsrv_request *req, uint16_t fnum)
34 for (f=pvfs->open_files;f;f=f->next) {
35 if (f->fnum == fnum) {
36 if (req->session != f->session) {
37 DEBUG(2,("pvfs_find_fd: attempt to use wrong session for fnum %d\n", fnum));
47 by using a destructor we make sure that abnormal cleanup will not
48 leak file descriptors (assuming at least the top level pointer is freed, which
49 will cascade down to here)
51 static int pvfs_fd_destructor(void *p)
53 struct pvfs_file *f = p;
63 TODO: this is a temporary implementation derived from the simple backend
64 its purpose is to allow other tests to run
66 NTSTATUS pvfs_open(struct ntvfs_module_context *ntvfs,
67 struct smbsrv_request *req, union smb_open *io)
69 struct pvfs_state *pvfs = ntvfs->private_data;
71 struct pvfs_filename *name;
75 if (io->generic.level != RAW_OPEN_GENERIC) {
76 return ntvfs_map_open(req, io, ntvfs);
79 /* resolve the cifs name to a posix name */
80 status = pvfs_resolve_name(pvfs, req, io->ntcreatex.in.fname,
81 PVFS_RESOLVE_NO_WILDCARD, &name);
82 if (!NT_STATUS_IS_OK(status)) {
86 switch (io->generic.in.open_disposition) {
87 case NTCREATEX_DISP_SUPERSEDE:
88 case NTCREATEX_DISP_OVERWRITE_IF:
89 flags = O_CREAT | O_TRUNC;
91 case NTCREATEX_DISP_OPEN:
92 case NTCREATEX_DISP_OVERWRITE:
95 case NTCREATEX_DISP_CREATE:
96 flags = O_CREAT | O_EXCL;
98 case NTCREATEX_DISP_OPEN_IF:
108 /* we need to do this differently to support systems without O_DIRECTORY */
110 #define O_DIRECTORY 0
113 if (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) {
114 flags = O_RDONLY | O_DIRECTORY;
115 if (pvfs->flags & PVFS_FLAG_READONLY) {
118 switch (io->generic.in.open_disposition) {
119 case NTCREATEX_DISP_CREATE:
120 if (mkdir(name->full_name, 0755) == -1) {
121 return pvfs_map_errno(pvfs,errno);
124 case NTCREATEX_DISP_OPEN_IF:
125 if (mkdir(name->full_name, 0755) == -1 && errno != EEXIST) {
126 return pvfs_map_errno(pvfs,errno);
133 fd = open(name->full_name, flags, 0644);
137 return pvfs_map_errno(pvfs,errno);
140 f = talloc_p(pvfs, struct pvfs_file);
143 return NT_STATUS_NO_MEMORY;
146 /* re-resolve the open fd */
147 status = pvfs_resolve_name_fd(pvfs, fd, name);
148 if (!NT_STATUS_IS_OK(status)) {
154 f->name = talloc_steal(f, name);
155 f->session = req->session;
156 f->smbpid = req->smbpid;
158 /* setup a destructor to avoid file descriptor leaks on
159 abnormal termination */
160 talloc_set_destructor(f, pvfs_fd_destructor);
162 DLIST_ADD(pvfs->open_files, f);
164 ZERO_STRUCT(io->generic.out);
166 io->generic.out.create_time = name->dos.create_time;
167 io->generic.out.access_time = name->dos.access_time;
168 io->generic.out.write_time = name->dos.write_time;
169 io->generic.out.change_time = name->dos.change_time;
170 io->generic.out.fnum = f->fnum;
171 io->generic.out.alloc_size = name->dos.alloc_size;
172 io->generic.out.size = name->st.st_size;
173 io->generic.out.attrib = name->dos.attrib;
174 io->generic.out.is_directory = (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)?1:0;
183 NTSTATUS pvfs_close(struct ntvfs_module_context *ntvfs,
184 struct smbsrv_request *req, union smb_close *io)
186 struct pvfs_state *pvfs = ntvfs->private_data;
190 if (io->generic.level != RAW_CLOSE_CLOSE) {
191 /* we need a mapping function */
192 return NT_STATUS_INVALID_LEVEL;
195 f = pvfs_find_fd(pvfs, req, io->close.in.fnum);
197 return NT_STATUS_INVALID_HANDLE;
200 if (close(f->fd) != 0) {
201 status = pvfs_map_errno(pvfs, errno);
203 status = NT_STATUS_OK;
206 talloc_set_destructor(f, NULL);
208 DLIST_REMOVE(pvfs->open_files, f);
216 logoff - close all file descriptors open by a vuid
218 NTSTATUS pvfs_logoff(struct ntvfs_module_context *ntvfs,
219 struct smbsrv_request *req)
221 struct pvfs_state *pvfs = ntvfs->private_data;
222 struct pvfs_file *f, *next;
224 for (f=pvfs->open_files;f;f=next) {
226 if (f->session == req->session) {
227 talloc_set_destructor(f, NULL);
228 DLIST_REMOVE(pvfs->open_files, f);
238 exit - close files for the current pid
240 NTSTATUS pvfs_exit(struct ntvfs_module_context *ntvfs,
241 struct smbsrv_request *req)
243 struct pvfs_state *pvfs = ntvfs->private_data;
244 struct pvfs_file *f, *next;
246 for (f=pvfs->open_files;f;f=next) {
248 if (f->smbpid == req->smbpid) {
249 talloc_set_destructor(f, NULL);
250 DLIST_REMOVE(pvfs->open_files, f);