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/>.
24 #include "libcli/security/security.h"
28 static bool gpfs_getrealfilename;
29 static bool gpfs_winattr;
30 static bool gpfs_do_ftruncate;
32 static int (*gpfs_set_share_fn)(int fd, unsigned int allow, unsigned int deny);
33 static int (*gpfs_set_lease_fn)(int fd, unsigned int leaseType);
34 static int (*gpfs_getacl_fn)(char *pathname, int flags, void *acl);
35 static int (*gpfs_putacl_fn)(char *pathname, int flags, void *acl);
36 static int (*gpfs_get_realfilename_path_fn)(char *pathname, char *filenamep,
38 static int (*gpfs_set_winattrs_path_fn)(char *pathname, int flags, struct gpfs_winattr *attrs);
39 static int (*gpfs_get_winattrs_path_fn)(char *pathname, struct gpfs_winattr *attrs);
40 static int (*gpfs_get_winattrs_fn)(int fd, struct gpfs_winattr *attrs);
41 static int (*gpfs_ftruncate_fn)(int fd, gpfs_off64_t length);
43 bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
46 unsigned int allow = GPFS_SHARE_NONE;
47 unsigned int deny = GPFS_DENY_NONE;
50 if (gpfs_set_share_fn == NULL) {
54 if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
55 /* No real file, don't disturb */
59 allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
60 DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
61 allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
64 if (allow == GPFS_SHARE_NONE) {
65 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
68 deny |= (share_access & FILE_SHARE_WRITE) ?
70 deny |= (share_access & (FILE_SHARE_READ)) ?
73 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
74 access_mask, allow, share_access, deny));
76 result = gpfs_set_share_fn(fsp->fh->fd, allow, deny);
78 if (errno == ENOSYS) {
79 DEBUG(5, ("VFS module vfs_gpfs loaded, but no gpfs "
80 "support has been compiled into Samba. Allowing access\n"));
83 DEBUG(10, ("gpfs_set_share failed: %s\n",
91 int set_gpfs_lease(int fd, int leasetype)
93 int gpfs_type = GPFS_LEASE_NONE;
95 if (gpfs_set_lease_fn == NULL) {
100 if (leasetype == F_RDLCK) {
101 gpfs_type = GPFS_LEASE_READ;
103 if (leasetype == F_WRLCK) {
104 gpfs_type = GPFS_LEASE_WRITE;
107 /* we unconditionally set CAP_LEASE, rather than looking for
108 -1/EACCES as there is a bug in some versions of
109 libgpfs_gpl.so which results in a leaked fd on /dev/ss0
110 each time we try this with the wrong capabilities set
112 linux_set_lease_capability();
113 return gpfs_set_lease_fn(fd, gpfs_type);
116 int smbd_gpfs_getacl(char *pathname, int flags, void *acl)
118 if (gpfs_getacl_fn == NULL) {
123 return gpfs_getacl_fn(pathname, flags, acl);
126 int smbd_gpfs_putacl(char *pathname, int flags, void *acl)
128 if (gpfs_putacl_fn == NULL) {
133 return gpfs_putacl_fn(pathname, flags, acl);
136 int smbd_gpfs_ftruncate(int fd, gpfs_off64_t length)
138 if (!gpfs_do_ftruncate || (gpfs_ftruncate_fn == NULL)) {
143 return gpfs_ftruncate_fn(fd, length);
146 int smbd_gpfs_get_realfilename_path(char *pathname, char *filenamep,
149 if ((!gpfs_getrealfilename)
150 || (gpfs_get_realfilename_path_fn == NULL)) {
155 return gpfs_get_realfilename_path_fn(pathname, filenamep, buflen);
158 int get_gpfs_winattrs(char *pathname,struct gpfs_winattr *attrs)
161 if ((!gpfs_winattr) || (gpfs_get_winattrs_path_fn == NULL)) {
165 DEBUG(10, ("gpfs_get_winattrs_path:open call %s\n",pathname));
166 return gpfs_get_winattrs_path_fn(pathname, attrs);
169 int smbd_fget_gpfs_winattrs(int fd, struct gpfs_winattr *attrs)
172 if ((!gpfs_winattr) || (gpfs_get_winattrs_fn == NULL)) {
176 DEBUG(10, ("gpfs_get_winattrs_path:open call %d\n", fd));
177 return gpfs_get_winattrs_fn(fd, attrs);
180 int set_gpfs_winattrs(char *pathname,int flags,struct gpfs_winattr *attrs)
182 if ((!gpfs_winattr) || (gpfs_set_winattrs_path_fn == NULL)) {
187 DEBUG(10, ("gpfs_set_winattrs_path:open call %s\n",pathname));
188 return gpfs_set_winattrs_path_fn(pathname,flags, attrs);
191 static bool init_gpfs_function_lib(void *plibhandle_pointer,
193 void *pfn_pointer, const char *fn_name)
195 bool did_open_here = false;
196 void **libhandle_pointer = (void **)plibhandle_pointer;
197 void **fn_pointer = (void **)pfn_pointer;
199 DEBUG(10, ("trying to load name %s from %s\n",
202 if (*libhandle_pointer == NULL) {
203 *libhandle_pointer = dlopen(libname, RTLD_LAZY);
204 did_open_here = true;
206 if (*libhandle_pointer == NULL) {
207 DEBUG(10, ("Could not open lib %s\n", libname));
211 *fn_pointer = dlsym(*libhandle_pointer, fn_name);
212 if (*fn_pointer == NULL) {
213 DEBUG(10, ("Did not find symbol %s in lib %s\n",
216 dlclose(*libhandle_pointer);
217 *libhandle_pointer = NULL;
225 static bool init_gpfs_function(void *fn_pointer, const char *fn_name)
227 static void *libgpfs_handle = NULL;
228 static void *libgpfs_gpl_handle = NULL;
230 if (init_gpfs_function_lib(&libgpfs_handle, "libgpfs.so",
231 fn_pointer, fn_name)) {
234 if (init_gpfs_function_lib(&libgpfs_gpl_handle, "libgpfs_gpl.so",
235 fn_pointer, fn_name)) {
243 init_gpfs_function(&gpfs_set_share_fn, "gpfs_set_share");
244 init_gpfs_function(&gpfs_set_lease_fn, "gpfs_set_lease");
245 init_gpfs_function(&gpfs_getacl_fn, "gpfs_getacl");
246 init_gpfs_function(&gpfs_putacl_fn, "gpfs_putacl");
247 init_gpfs_function(&gpfs_get_realfilename_path_fn,
248 "gpfs_get_realfilename_path");
249 init_gpfs_function(&gpfs_get_winattrs_path_fn,"gpfs_get_winattrs_path");
250 init_gpfs_function(&gpfs_set_winattrs_path_fn,"gpfs_set_winattrs_path");
251 init_gpfs_function(&gpfs_get_winattrs_fn,"gpfs_get_winattrs");
252 init_gpfs_function(&gpfs_ftruncate_fn, "gpfs_ftruncate");
254 gpfs_getrealfilename = lp_parm_bool(-1, "gpfs", "getrealfilename",
256 gpfs_winattr = lp_parm_bool(-1, "gpfs", "winattr", False);
257 gpfs_do_ftruncate = lp_parm_bool(-1, "gpfs", "ftruncate", True);
264 int set_gpfs_lease(int snum, int leasetype)
266 DEBUG(0, ("'VFS module smbgpfs loaded, without gpfs support compiled\n"));
268 /* We need to indicate that no GPFS is around by returning ENOSYS, so
269 * that the normal linux kernel oplock code is called. */
274 bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
277 DEBUG(0, ("VFS module - smbgpfs.so loaded, without gpfs support compiled\n"));
278 /* Don't disturb but complain */
282 int smbd_gpfs_getacl(char *pathname, int flags, void *acl)
288 int smbd_gpfs_putacl(char *pathname, int flags, void *acl)
294 int smbd_gpfs_get_realfilename_path(char *pathname, char *fileamep,
301 int set_gpfs_winattrs(char *pathname,int flags,struct gpfs_winattr *attrs)
307 int get_gpfs_winattrs(char *pathname,struct gpfs_winattr *attrs)
318 #endif /* HAVE_GPFS */