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/>.
27 static bool gpfs_getrealfilename
;
28 static bool gpfs_winattr
;
29 static bool gpfs_do_ftruncate
;
31 static int (*gpfs_set_share_fn
)(int fd
, unsigned int allow
, unsigned int deny
);
32 static int (*gpfs_set_lease_fn
)(int fd
, unsigned int leaseType
);
33 static int (*gpfs_getacl_fn
)(char *pathname
, int flags
, void *acl
);
34 static int (*gpfs_putacl_fn
)(char *pathname
, int flags
, void *acl
);
35 static int (*gpfs_get_realfilename_path_fn
)(char *pathname
, char *filenamep
,
37 static int (*gpfs_set_winattrs_path_fn
)(char *pathname
, int flags
, struct gpfs_winattr
*attrs
);
38 static int (*gpfs_get_winattrs_path_fn
)(char *pathname
, struct gpfs_winattr
*attrs
);
39 static int (*gpfs_get_winattrs_fn
)(int fd
, struct gpfs_winattr
*attrs
);
40 static int (*gpfs_ftruncate_fn
)(int fd
, gpfs_off64_t length
);
42 bool set_gpfs_sharemode(files_struct
*fsp
, uint32 access_mask
,
45 unsigned int allow
= GPFS_SHARE_NONE
;
46 unsigned int deny
= GPFS_DENY_NONE
;
49 if (gpfs_set_share_fn
== NULL
) {
53 if ((fsp
== NULL
) || (fsp
->fh
== NULL
) || (fsp
->fh
->fd
< 0)) {
54 /* No real file, don't disturb */
58 allow
|= (access_mask
& (FILE_WRITE_DATA
|FILE_APPEND_DATA
|
59 DELETE_ACCESS
)) ? GPFS_SHARE_WRITE
: 0;
60 allow
|= (access_mask
& (FILE_READ_DATA
|FILE_EXECUTE
)) ?
63 if (allow
== GPFS_SHARE_NONE
) {
64 DEBUG(10, ("special case am=no_access:%x\n",access_mask
));
67 deny
|= (share_access
& FILE_SHARE_WRITE
) ?
69 deny
|= (share_access
& (FILE_SHARE_READ
)) ?
72 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
73 access_mask
, allow
, share_access
, deny
));
75 result
= gpfs_set_share_fn(fsp
->fh
->fd
, allow
, deny
);
77 if (errno
== ENOSYS
) {
78 DEBUG(5, ("VFS module vfs_gpfs loaded, but no gpfs "
79 "support has been compiled into Samba. Allowing access\n"));
82 DEBUG(10, ("gpfs_set_share failed: %s\n",
90 int set_gpfs_lease(int fd
, int leasetype
)
92 int gpfs_type
= GPFS_LEASE_NONE
;
94 if (gpfs_set_lease_fn
== NULL
) {
99 if (leasetype
== F_RDLCK
) {
100 gpfs_type
= GPFS_LEASE_READ
;
102 if (leasetype
== F_WRLCK
) {
103 gpfs_type
= GPFS_LEASE_WRITE
;
106 /* we unconditionally set CAP_LEASE, rather than looking for
107 -1/EACCES as there is a bug in some versions of
108 libgpfs_gpl.so which results in a leaked fd on /dev/ss0
109 each time we try this with the wrong capabilities set
111 linux_set_lease_capability();
112 return gpfs_set_lease_fn(fd
, gpfs_type
);
115 int smbd_gpfs_getacl(char *pathname
, int flags
, void *acl
)
117 if (gpfs_getacl_fn
== NULL
) {
122 return gpfs_getacl_fn(pathname
, flags
, acl
);
125 int smbd_gpfs_putacl(char *pathname
, int flags
, void *acl
)
127 if (gpfs_putacl_fn
== NULL
) {
132 return gpfs_putacl_fn(pathname
, flags
, acl
);
135 int smbd_gpfs_ftruncate(int fd
, gpfs_off64_t length
)
137 if (!gpfs_do_ftruncate
|| (gpfs_ftruncate_fn
== NULL
)) {
142 return gpfs_ftruncate_fn(fd
, length
);
145 int smbd_gpfs_get_realfilename_path(char *pathname
, char *filenamep
,
148 if ((!gpfs_getrealfilename
)
149 || (gpfs_get_realfilename_path_fn
== NULL
)) {
154 return gpfs_get_realfilename_path_fn(pathname
, filenamep
, buflen
);
157 int get_gpfs_winattrs(char *pathname
,struct gpfs_winattr
*attrs
)
160 if ((!gpfs_winattr
) || (gpfs_get_winattrs_path_fn
== NULL
)) {
164 DEBUG(10, ("gpfs_get_winattrs_path:open call %s\n",pathname
));
165 return gpfs_get_winattrs_path_fn(pathname
, attrs
);
168 int smbd_fget_gpfs_winattrs(int fd
, struct gpfs_winattr
*attrs
)
171 if ((!gpfs_winattr
) || (gpfs_get_winattrs_fn
== NULL
)) {
175 DEBUG(10, ("gpfs_get_winattrs_path:open call %d\n", fd
));
176 return gpfs_get_winattrs_fn(fd
, attrs
);
179 int set_gpfs_winattrs(char *pathname
,int flags
,struct gpfs_winattr
*attrs
)
181 if ((!gpfs_winattr
) || (gpfs_set_winattrs_path_fn
== NULL
)) {
186 DEBUG(10, ("gpfs_set_winattrs_path:open call %s\n",pathname
));
187 return gpfs_set_winattrs_path_fn(pathname
,flags
, attrs
);
190 static bool init_gpfs_function_lib(void *plibhandle_pointer
,
192 void *pfn_pointer
, const char *fn_name
)
194 bool did_open_here
= false;
195 void **libhandle_pointer
= (void **)plibhandle_pointer
;
196 void **fn_pointer
= (void **)pfn_pointer
;
198 DEBUG(10, ("trying to load name %s from %s\n",
201 if (*libhandle_pointer
== NULL
) {
202 *libhandle_pointer
= dlopen(libname
, RTLD_LAZY
);
203 did_open_here
= true;
205 if (*libhandle_pointer
== NULL
) {
206 DEBUG(10, ("Could not open lib %s\n", libname
));
210 *fn_pointer
= dlsym(*libhandle_pointer
, fn_name
);
211 if (*fn_pointer
== NULL
) {
212 DEBUG(10, ("Did not find symbol %s in lib %s\n",
215 dlclose(*libhandle_pointer
);
216 *libhandle_pointer
= NULL
;
224 static bool init_gpfs_function(void *fn_pointer
, const char *fn_name
)
226 static void *libgpfs_handle
= NULL
;
227 static void *libgpfs_gpl_handle
= NULL
;
229 if (init_gpfs_function_lib(&libgpfs_handle
, "libgpfs.so",
230 fn_pointer
, fn_name
)) {
233 if (init_gpfs_function_lib(&libgpfs_gpl_handle
, "libgpfs_gpl.so",
234 fn_pointer
, fn_name
)) {
242 init_gpfs_function(&gpfs_set_share_fn
, "gpfs_set_share");
243 init_gpfs_function(&gpfs_set_lease_fn
, "gpfs_set_lease");
244 init_gpfs_function(&gpfs_getacl_fn
, "gpfs_getacl");
245 init_gpfs_function(&gpfs_putacl_fn
, "gpfs_putacl");
246 init_gpfs_function(&gpfs_get_realfilename_path_fn
,
247 "gpfs_get_realfilename_path");
248 init_gpfs_function(&gpfs_get_winattrs_path_fn
,"gpfs_get_winattrs_path");
249 init_gpfs_function(&gpfs_set_winattrs_path_fn
,"gpfs_set_winattrs_path");
250 init_gpfs_function(&gpfs_get_winattrs_fn
,"gpfs_get_winattrs");
251 init_gpfs_function(&gpfs_ftruncate_fn
, "gpfs_ftruncate");
253 gpfs_getrealfilename
= lp_parm_bool(-1, "gpfs", "getrealfilename",
255 gpfs_winattr
= lp_parm_bool(-1, "gpfs", "winattr", False
);
256 gpfs_do_ftruncate
= lp_parm_bool(-1, "gpfs", "ftruncate", True
);
263 int set_gpfs_lease(int snum
, int leasetype
)
265 DEBUG(0, ("'VFS module smbgpfs loaded, without gpfs support compiled\n"));
267 /* We need to indicate that no GPFS is around by returning ENOSYS, so
268 * that the normal linux kernel oplock code is called. */
273 bool set_gpfs_sharemode(files_struct
*fsp
, uint32 access_mask
,
276 DEBUG(0, ("VFS module - smbgpfs.so loaded, without gpfs support compiled\n"));
277 /* Don't disturb but complain */
281 int smbd_gpfs_getacl(char *pathname
, int flags
, void *acl
)
287 int smbd_gpfs_putacl(char *pathname
, int flags
, void *acl
)
293 int smbd_gpfs_get_realfilename_path(char *pathname
, char *fileamep
,
300 int set_gpfs_winattrs(char *pathname
,int flags
,struct gpfs_winattr
*attrs
)
306 int get_gpfs_winattrs(char *pathname
,struct gpfs_winattr
*attrs
)
317 #endif /* HAVE_GPFS */