2 * Unix SMB/CIFS implementation.
3 * Provide a connection to GPFS specific features
4 * Copyright (C) Volker Lendecke 2005
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "system/filesys.h"
22 #include "smbd/smbd.h"
23 #include "system/filesys.h"
27 #include "libcli/security/security.h"
31 static bool gpfs_getrealfilename
;
32 static bool gpfs_winattr
;
33 static bool gpfs_do_ftruncate
;
35 static int (*gpfs_set_share_fn
)(int fd
, unsigned int allow
, unsigned int deny
);
36 static int (*gpfs_set_lease_fn
)(int fd
, unsigned int leaseType
);
37 static int (*gpfs_getacl_fn
)(char *pathname
, int flags
, void *acl
);
38 static int (*gpfs_putacl_fn
)(char *pathname
, int flags
, void *acl
);
39 static int (*gpfs_get_realfilename_path_fn
)(char *pathname
, char *filenamep
,
41 static int (*gpfs_set_winattrs_path_fn
)(char *pathname
, int flags
, struct gpfs_winattr
*attrs
);
42 static int (*gpfs_get_winattrs_path_fn
)(char *pathname
, struct gpfs_winattr
*attrs
);
43 static int (*gpfs_get_winattrs_fn
)(int fd
, struct gpfs_winattr
*attrs
);
44 static int (*gpfs_ftruncate_fn
)(int fd
, gpfs_off64_t length
);
45 static int (*gpfs_lib_init_fn
)(int flags
);
47 bool set_gpfs_sharemode(files_struct
*fsp
, uint32 access_mask
,
50 unsigned int allow
= GPFS_SHARE_NONE
;
51 unsigned int deny
= GPFS_DENY_NONE
;
54 if (gpfs_set_share_fn
== NULL
) {
58 if ((fsp
== NULL
) || (fsp
->fh
== NULL
) || (fsp
->fh
->fd
< 0)) {
59 /* No real file, don't disturb */
63 allow
|= (access_mask
& (FILE_WRITE_DATA
|FILE_APPEND_DATA
|
64 DELETE_ACCESS
)) ? GPFS_SHARE_WRITE
: 0;
65 allow
|= (access_mask
& (FILE_READ_DATA
|FILE_EXECUTE
)) ?
68 if (allow
== GPFS_SHARE_NONE
) {
69 DEBUG(10, ("special case am=no_access:%x\n",access_mask
));
72 deny
|= (share_access
& FILE_SHARE_WRITE
) ?
74 deny
|= (share_access
& (FILE_SHARE_READ
)) ?
77 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
78 access_mask
, allow
, share_access
, deny
));
80 result
= gpfs_set_share_fn(fsp
->fh
->fd
, allow
, deny
);
82 if (errno
== ENOSYS
) {
83 DEBUG(5, ("VFS module vfs_gpfs loaded, but no gpfs "
84 "support has been compiled into Samba. Allowing access\n"));
87 DEBUG(10, ("gpfs_set_share failed: %s\n",
95 int set_gpfs_lease(int fd
, int leasetype
)
97 int gpfs_type
= GPFS_LEASE_NONE
;
99 if (gpfs_set_lease_fn
== NULL
) {
104 if (leasetype
== F_RDLCK
) {
105 gpfs_type
= GPFS_LEASE_READ
;
107 if (leasetype
== F_WRLCK
) {
108 gpfs_type
= GPFS_LEASE_WRITE
;
111 /* we unconditionally set CAP_LEASE, rather than looking for
112 -1/EACCES as there is a bug in some versions of
113 libgpfs_gpl.so which results in a leaked fd on /dev/ss0
114 each time we try this with the wrong capabilities set
116 linux_set_lease_capability();
117 return gpfs_set_lease_fn(fd
, gpfs_type
);
120 int smbd_gpfs_getacl(char *pathname
, int flags
, void *acl
)
122 if (gpfs_getacl_fn
== NULL
) {
127 return gpfs_getacl_fn(pathname
, flags
, acl
);
130 int smbd_gpfs_putacl(char *pathname
, int flags
, void *acl
)
132 if (gpfs_putacl_fn
== NULL
) {
137 return gpfs_putacl_fn(pathname
, flags
, acl
);
140 int smbd_gpfs_ftruncate(int fd
, gpfs_off64_t length
)
142 if (!gpfs_do_ftruncate
|| (gpfs_ftruncate_fn
== NULL
)) {
147 return gpfs_ftruncate_fn(fd
, length
);
150 int smbd_gpfs_get_realfilename_path(char *pathname
, char *filenamep
,
153 if ((!gpfs_getrealfilename
)
154 || (gpfs_get_realfilename_path_fn
== NULL
)) {
159 return gpfs_get_realfilename_path_fn(pathname
, filenamep
, buflen
);
162 int get_gpfs_winattrs(char *pathname
,struct gpfs_winattr
*attrs
)
165 if ((!gpfs_winattr
) || (gpfs_get_winattrs_path_fn
== NULL
)) {
169 DEBUG(10, ("gpfs_get_winattrs_path:open call %s\n",pathname
));
170 return gpfs_get_winattrs_path_fn(pathname
, attrs
);
173 int smbd_fget_gpfs_winattrs(int fd
, struct gpfs_winattr
*attrs
)
176 if ((!gpfs_winattr
) || (gpfs_get_winattrs_fn
== NULL
)) {
180 DEBUG(10, ("gpfs_get_winattrs_path:open call %d\n", fd
));
181 return gpfs_get_winattrs_fn(fd
, attrs
);
184 int set_gpfs_winattrs(char *pathname
,int flags
,struct gpfs_winattr
*attrs
)
186 if ((!gpfs_winattr
) || (gpfs_set_winattrs_path_fn
== NULL
)) {
191 DEBUG(10, ("gpfs_set_winattrs_path:open call %s\n",pathname
));
192 return gpfs_set_winattrs_path_fn(pathname
,flags
, attrs
);
195 void smbd_gpfs_lib_init()
197 if (gpfs_lib_init_fn
) {
198 int rc
= gpfs_lib_init_fn(0);
199 DEBUG(10, ("gpfs_lib_init() finished with rc %d "
200 "and errno %d\n", rc
, errno
));
202 DEBUG(10, ("libgpfs lacks gpfs_lib_init\n"));
206 static bool init_gpfs_function_lib(void *plibhandle_pointer
,
208 void *pfn_pointer
, const char *fn_name
)
210 bool did_open_here
= false;
211 void **libhandle_pointer
= (void **)plibhandle_pointer
;
212 void **fn_pointer
= (void **)pfn_pointer
;
214 DEBUG(10, ("trying to load name %s from %s\n",
217 if (*libhandle_pointer
== NULL
) {
218 *libhandle_pointer
= dlopen(libname
, RTLD_LAZY
);
219 did_open_here
= true;
221 if (*libhandle_pointer
== NULL
) {
222 DEBUG(10, ("Could not open lib %s\n", libname
));
226 *fn_pointer
= dlsym(*libhandle_pointer
, fn_name
);
227 if (*fn_pointer
== NULL
) {
228 DEBUG(10, ("Did not find symbol %s in lib %s\n",
231 dlclose(*libhandle_pointer
);
232 *libhandle_pointer
= NULL
;
240 static bool init_gpfs_function(void *fn_pointer
, const char *fn_name
)
242 static void *libgpfs_handle
= NULL
;
243 static void *libgpfs_gpl_handle
= NULL
;
245 if (init_gpfs_function_lib(&libgpfs_handle
, "libgpfs.so",
246 fn_pointer
, fn_name
)) {
249 if (init_gpfs_function_lib(&libgpfs_gpl_handle
, "libgpfs_gpl.so",
250 fn_pointer
, fn_name
)) {
258 init_gpfs_function(&gpfs_set_share_fn
, "gpfs_set_share");
259 init_gpfs_function(&gpfs_set_lease_fn
, "gpfs_set_lease");
260 init_gpfs_function(&gpfs_getacl_fn
, "gpfs_getacl");
261 init_gpfs_function(&gpfs_putacl_fn
, "gpfs_putacl");
262 init_gpfs_function(&gpfs_get_realfilename_path_fn
,
263 "gpfs_get_realfilename_path");
264 init_gpfs_function(&gpfs_get_winattrs_path_fn
,"gpfs_get_winattrs_path");
265 init_gpfs_function(&gpfs_set_winattrs_path_fn
,"gpfs_set_winattrs_path");
266 init_gpfs_function(&gpfs_get_winattrs_fn
,"gpfs_get_winattrs");
267 init_gpfs_function(&gpfs_ftruncate_fn
, "gpfs_ftruncate");
268 init_gpfs_function(&gpfs_lib_init_fn
,"gpfs_lib_init");
270 gpfs_getrealfilename
= lp_parm_bool(-1, "gpfs", "getrealfilename",
272 gpfs_winattr
= lp_parm_bool(-1, "gpfs", "winattr", False
);
273 gpfs_do_ftruncate
= lp_parm_bool(-1, "gpfs", "ftruncate", True
);
280 int set_gpfs_lease(int snum
, int leasetype
)
282 DEBUG(0, ("'VFS module smbgpfs loaded, without gpfs support compiled\n"));
284 /* We need to indicate that no GPFS is around by returning ENOSYS, so
285 * that the normal linux kernel oplock code is called. */
290 bool set_gpfs_sharemode(files_struct
*fsp
, uint32 access_mask
,
293 DEBUG(0, ("VFS module - smbgpfs.so loaded, without gpfs support compiled\n"));
294 /* Don't disturb but complain */
298 int smbd_gpfs_getacl(char *pathname
, int flags
, void *acl
)
304 int smbd_gpfs_putacl(char *pathname
, int flags
, void *acl
)
310 int smbd_gpfs_get_realfilename_path(char *pathname
, char *fileamep
,
317 int set_gpfs_winattrs(char *pathname
,int flags
,struct gpfs_winattr
*attrs
)
323 int get_gpfs_winattrs(char *pathname
,struct gpfs_winattr
*attrs
)
329 void smbd_gpfs_lib_init()
339 #endif /* HAVE_GPFS */