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 smbsrv_request *req, uint16_t fnum)
32 NTVFS_GET_PRIVATE(pvfs_state, pvfs, req);
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 smbsrv_request *req, union smb_open *io)
68 NTVFS_GET_PRIVATE(pvfs_state, pvfs, req);
70 struct pvfs_filename *name;
74 if (io->generic.level != RAW_OPEN_GENERIC) {
75 return ntvfs_map_open(req, io, pvfs->ops);
78 /* resolve the cifs name to a posix name */
79 status = pvfs_resolve_name(pvfs, req, io->ntcreatex.in.fname,
80 PVFS_RESOLVE_NO_WILDCARD, &name);
81 if (!NT_STATUS_IS_OK(status)) {
85 switch (io->generic.in.open_disposition) {
86 case NTCREATEX_DISP_SUPERSEDE:
87 case NTCREATEX_DISP_OVERWRITE_IF:
88 flags = O_CREAT | O_TRUNC;
90 case NTCREATEX_DISP_OPEN:
91 case NTCREATEX_DISP_OVERWRITE:
94 case NTCREATEX_DISP_CREATE:
95 flags = O_CREAT | O_EXCL;
97 case NTCREATEX_DISP_OPEN_IF:
107 /* we need to do this differently to support systems without O_DIRECTORY */
109 #define O_DIRECTORY 0
112 if (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) {
113 flags = O_RDONLY | O_DIRECTORY;
114 if (pvfs->flags & PVFS_FLAG_READONLY) {
117 switch (io->generic.in.open_disposition) {
118 case NTCREATEX_DISP_CREATE:
119 if (mkdir(name->full_name, 0755) == -1) {
120 return pvfs_map_errno(pvfs,errno);
123 case NTCREATEX_DISP_OPEN_IF:
124 if (mkdir(name->full_name, 0755) == -1 && errno != EEXIST) {
125 return pvfs_map_errno(pvfs,errno);
132 fd = open(name->full_name, flags, 0644);
136 return pvfs_map_errno(pvfs,errno);
139 f = talloc_p(pvfs, struct pvfs_file);
142 return NT_STATUS_NO_MEMORY;
145 /* re-resolve the open fd */
146 status = pvfs_resolve_name_fd(pvfs, fd, name);
147 if (!NT_STATUS_IS_OK(status)) {
153 f->name = talloc_steal(f, name);
154 f->session = req->session;
155 f->smbpid = req->smbpid;
157 /* setup a destructor to avoid file descriptor leaks on
158 abnormal termination */
159 talloc_set_destructor(f, pvfs_fd_destructor);
161 DLIST_ADD(pvfs->open_files, f);
163 ZERO_STRUCT(io->generic.out);
165 io->generic.out.create_time = name->dos.create_time;
166 io->generic.out.access_time = name->dos.access_time;
167 io->generic.out.write_time = name->dos.write_time;
168 io->generic.out.change_time = name->dos.change_time;
169 io->generic.out.fnum = f->fnum;
170 io->generic.out.alloc_size = name->dos.alloc_size;
171 io->generic.out.size = name->st.st_size;
172 io->generic.out.attrib = name->dos.attrib;
173 io->generic.out.is_directory = (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)?1:0;
182 NTSTATUS pvfs_close(struct smbsrv_request *req, union smb_close *io)
184 NTVFS_GET_PRIVATE(pvfs_state, pvfs, req);
188 if (io->generic.level != RAW_CLOSE_CLOSE) {
189 /* we need a mapping function */
190 return NT_STATUS_INVALID_LEVEL;
193 f = pvfs_find_fd(req, io->close.in.fnum);
195 return NT_STATUS_INVALID_HANDLE;
198 if (close(f->fd) != 0) {
199 status = pvfs_map_errno(pvfs, errno);
201 status = NT_STATUS_OK;
204 talloc_set_destructor(f, NULL);
206 DLIST_REMOVE(pvfs->open_files, f);
214 logoff - close all file descriptors open by a vuid
216 NTSTATUS pvfs_logoff(struct smbsrv_request *req)
218 NTVFS_GET_PRIVATE(pvfs_state, pvfs, req);
219 struct pvfs_file *f, *next;
221 for (f=pvfs->open_files;f;f=next) {
223 if (f->session == req->session) {
224 talloc_set_destructor(f, NULL);
225 DLIST_REMOVE(pvfs->open_files, f);
235 exit - close files for the current pid
237 NTSTATUS pvfs_exit(struct smbsrv_request *req)
239 NTVFS_GET_PRIVATE(pvfs_state, pvfs, req);
240 struct pvfs_file *f, *next;
242 for (f=pvfs->open_files;f;f=next) {
244 if (f->smbpid == req->smbpid) {
245 talloc_set_destructor(f, NULL);
246 DLIST_REMOVE(pvfs->open_files, f);