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"
24 #include "libcli/security/security.h"
25 #include "gpfs_fcntl.h"
29 static int (*gpfs_set_share_fn)(int fd, unsigned int allow, unsigned int deny);
30 static int (*gpfs_set_lease_fn)(int fd, unsigned int leaseType);
31 static int (*gpfs_getacl_fn)(char *pathname, int flags, void *acl);
32 static int (*gpfs_putacl_fn)(char *pathname, int flags, void *acl);
33 static int (*gpfs_get_realfilename_path_fn)(char *pathname, char *filenamep,
35 static int (*gpfs_set_winattrs_path_fn)(char *pathname, int flags, struct gpfs_winattr *attrs);
36 static int (*gpfs_get_winattrs_path_fn)(char *pathname, struct gpfs_winattr *attrs);
37 static int (*gpfs_get_winattrs_fn)(int fd, struct gpfs_winattr *attrs);
38 static int (*gpfs_prealloc_fn)(int fd, gpfs_off64_t startOffset, gpfs_off64_t bytesToPrealloc);
39 static int (*gpfs_ftruncate_fn)(int fd, gpfs_off64_t length);
40 static int (*gpfs_lib_init_fn)(int flags);
41 static int (*gpfs_quotactl_fn)(char *pathname, int cmd, int id, void *bufferP);
42 static int (*gpfs_fcntl_fn)(gpfs_file_t fileDesc, void *fcntlArgP);
43 static int (*gpfs_getfilesetid_fn)(char *pathname, char *name, int *idP);
45 bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
48 unsigned int allow = GPFS_SHARE_NONE;
49 unsigned int deny = GPFS_DENY_NONE;
52 if (gpfs_set_share_fn == NULL) {
56 if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
57 /* No real file, don't disturb */
61 allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
62 DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
63 allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
66 if (allow == GPFS_SHARE_NONE) {
67 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
70 deny |= (share_access & FILE_SHARE_WRITE) ?
72 deny |= (share_access & (FILE_SHARE_READ)) ?
75 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
76 access_mask, allow, share_access, deny));
78 result = gpfs_set_share_fn(fsp->fh->fd, allow, deny);
80 if (errno == ENOSYS) {
81 DEBUG(5, ("VFS module vfs_gpfs loaded, but no gpfs "
82 "support has been compiled into Samba. Allowing access\n"));
85 DEBUG(10, ("gpfs_set_share failed: %s\n",
93 int set_gpfs_lease(int fd, int leasetype)
95 int gpfs_type = GPFS_LEASE_NONE;
97 if (gpfs_set_lease_fn == NULL) {
102 if (leasetype == F_RDLCK) {
103 gpfs_type = GPFS_LEASE_READ;
105 if (leasetype == F_WRLCK) {
106 gpfs_type = GPFS_LEASE_WRITE;
109 /* we unconditionally set CAP_LEASE, rather than looking for
110 -1/EACCES as there is a bug in some versions of
111 libgpfs_gpl.so which results in a leaked fd on /dev/ss0
112 each time we try this with the wrong capabilities set
114 linux_set_lease_capability();
115 return gpfs_set_lease_fn(fd, gpfs_type);
118 int smbd_gpfs_getacl(char *pathname, int flags, void *acl)
120 if (gpfs_getacl_fn == NULL) {
125 return gpfs_getacl_fn(pathname, flags, acl);
128 int smbd_gpfs_putacl(char *pathname, int flags, void *acl)
130 if (gpfs_putacl_fn == NULL) {
135 return gpfs_putacl_fn(pathname, flags, acl);
138 int smbd_gpfs_ftruncate(int fd, gpfs_off64_t length)
140 if (gpfs_ftruncate_fn == NULL) {
145 return gpfs_ftruncate_fn(fd, length);
148 int smbd_gpfs_get_realfilename_path(char *pathname, char *filenamep,
151 if (gpfs_get_realfilename_path_fn == NULL) {
156 return gpfs_get_realfilename_path_fn(pathname, filenamep, buflen);
159 int get_gpfs_winattrs(char *pathname,struct gpfs_winattr *attrs)
162 if (gpfs_get_winattrs_path_fn == NULL) {
166 DEBUG(10, ("gpfs_get_winattrs_path:open call %s\n",pathname));
167 return gpfs_get_winattrs_path_fn(pathname, attrs);
170 int smbd_fget_gpfs_winattrs(int fd, struct gpfs_winattr *attrs)
173 if (gpfs_get_winattrs_fn == NULL) {
177 DEBUG(10, ("gpfs_get_winattrs_path:open call %d\n", fd));
178 return gpfs_get_winattrs_fn(fd, attrs);
181 int smbd_gpfs_prealloc(int fd, gpfs_off64_t start, gpfs_off64_t bytes)
183 if (gpfs_prealloc_fn == NULL) {
188 return gpfs_prealloc_fn(fd, start, bytes);
191 int set_gpfs_winattrs(char *pathname,int flags,struct gpfs_winattr *attrs)
193 if (gpfs_set_winattrs_path_fn == NULL) {
198 DEBUG(10, ("gpfs_set_winattrs_path:open call %s\n",pathname));
199 return gpfs_set_winattrs_path_fn(pathname,flags, attrs);
202 int get_gpfs_quota(const char *pathname, int type, int id,
203 struct gpfs_quotaInfo *qi)
207 if (!gpfs_quotactl_fn) {
213 ret = gpfs_quotactl_fn(discard_const_p(char, pathname),
214 GPFS_QCMD(Q_GETQUOTA, type), id, qi);
217 if (errno == GPFS_E_NO_QUOTA_INST) {
218 DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
220 DEBUG(0, ("Get quota failed, type %d, id, %d, "
221 "errno %d.\n", type, id, errno));
227 DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
228 type, id, qi->blockUsage, qi->blockHardLimit,
229 qi->blockSoftLimit, qi->blockGraceTime));
234 int get_gpfs_fset_id(const char *pathname, int *fset_id)
236 int err, fd, errno_fcntl;
239 gpfsFcntlHeader_t hdr;
240 gpfsGetFilesetName_t fsn;
243 if (!gpfs_fcntl_fn || !gpfs_getfilesetid_fn) {
248 arg.hdr.totalLength = sizeof(arg);
249 arg.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
250 arg.hdr.fcntlReserved = 0;
251 arg.fsn.structLen = sizeof(arg.fsn);
252 arg.fsn.structType = GPFS_FCNTL_GET_FILESETNAME;
254 fd = open(pathname, O_RDONLY);
258 err = gpfs_fcntl_fn(fd, &arg);
267 return gpfs_getfilesetid_fn(discard_const_p(char, pathname),
268 arg.fsn.buffer, fset_id);
271 void smbd_gpfs_lib_init()
273 if (gpfs_lib_init_fn) {
274 int rc = gpfs_lib_init_fn(0);
275 DEBUG(10, ("gpfs_lib_init() finished with rc %d "
276 "and errno %d\n", rc, errno));
278 DEBUG(10, ("libgpfs lacks gpfs_lib_init\n"));
282 static bool init_gpfs_function_lib(void *plibhandle_pointer,
284 void *pfn_pointer, const char *fn_name)
286 bool did_open_here = false;
287 void **libhandle_pointer = (void **)plibhandle_pointer;
288 void **fn_pointer = (void **)pfn_pointer;
290 DEBUG(10, ("trying to load name %s from %s\n",
293 if (*libhandle_pointer == NULL) {
294 *libhandle_pointer = dlopen(libname, RTLD_LAZY);
295 did_open_here = true;
297 if (*libhandle_pointer == NULL) {
298 DEBUG(10, ("Could not open lib %s\n", libname));
302 *fn_pointer = dlsym(*libhandle_pointer, fn_name);
303 if (*fn_pointer == NULL) {
304 DEBUG(10, ("Did not find symbol %s in lib %s\n",
307 dlclose(*libhandle_pointer);
308 *libhandle_pointer = NULL;
316 static bool init_gpfs_function(void *fn_pointer, const char *fn_name)
318 static void *libgpfs_handle = NULL;
319 static void *libgpfs_gpl_handle = NULL;
321 if (init_gpfs_function_lib(&libgpfs_handle, "libgpfs.so",
322 fn_pointer, fn_name)) {
325 if (init_gpfs_function_lib(&libgpfs_gpl_handle, "libgpfs_gpl.so",
326 fn_pointer, fn_name)) {
334 init_gpfs_function(&gpfs_set_share_fn, "gpfs_set_share");
335 init_gpfs_function(&gpfs_set_lease_fn, "gpfs_set_lease");
336 init_gpfs_function(&gpfs_getacl_fn, "gpfs_getacl");
337 init_gpfs_function(&gpfs_putacl_fn, "gpfs_putacl");
338 init_gpfs_function(&gpfs_get_realfilename_path_fn,
339 "gpfs_get_realfilename_path");
340 init_gpfs_function(&gpfs_get_winattrs_path_fn,"gpfs_get_winattrs_path");
341 init_gpfs_function(&gpfs_set_winattrs_path_fn,"gpfs_set_winattrs_path");
342 init_gpfs_function(&gpfs_get_winattrs_fn,"gpfs_get_winattrs");
343 init_gpfs_function(&gpfs_prealloc_fn, "gpfs_prealloc");
344 init_gpfs_function(&gpfs_ftruncate_fn, "gpfs_ftruncate");
345 init_gpfs_function(&gpfs_lib_init_fn,"gpfs_lib_init");
346 init_gpfs_function(&gpfs_quotactl_fn, "gpfs_quotactl");
347 init_gpfs_function(&gpfs_fcntl_fn, "gpfs_fcntl");
348 init_gpfs_function(&gpfs_getfilesetid_fn, "gpfs_getfilesetid");