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"
25 #include "libcli/security/security.h"
26 #include "gpfs_fcntl.h"
30 static int (*gpfs_set_share_fn)(int fd, unsigned int allow, unsigned int deny);
31 static int (*gpfs_set_lease_fn)(int fd, unsigned int leaseType);
32 static int (*gpfs_getacl_fn)(char *pathname, int flags, void *acl);
33 static int (*gpfs_putacl_fn)(char *pathname, int flags, void *acl);
34 static int (*gpfs_get_realfilename_path_fn)(char *pathname, char *filenamep,
36 static int (*gpfs_set_winattrs_path_fn)(char *pathname, int flags, struct gpfs_winattr *attrs);
37 static int (*gpfs_get_winattrs_path_fn)(char *pathname, struct gpfs_winattr *attrs);
38 static int (*gpfs_get_winattrs_fn)(int fd, struct gpfs_winattr *attrs);
39 static int (*gpfs_prealloc_fn)(int fd, gpfs_off64_t startOffset, gpfs_off64_t bytesToPrealloc);
40 static int (*gpfs_ftruncate_fn)(int fd, gpfs_off64_t length);
41 static int (*gpfs_lib_init_fn)(int flags);
42 static int (*gpfs_set_times_path_fn)(char *pathname, int flags,
43 gpfs_timestruc_t times[4]);
44 static int (*gpfs_quotactl_fn)(char *pathname, int cmd, int id, void *bufferP);
45 static int (*gpfs_fcntl_fn)(gpfs_file_t fileDesc, void *fcntlArgP);
46 static int (*gpfs_getfilesetid_fn)(char *pathname, char *name, int *idP);
48 bool set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
51 unsigned int allow = GPFS_SHARE_NONE;
52 unsigned int deny = GPFS_DENY_NONE;
55 if (gpfs_set_share_fn == NULL) {
59 if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
60 /* No real file, don't disturb */
64 allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
65 DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
66 allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
69 if (allow == GPFS_SHARE_NONE) {
70 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
73 deny |= (share_access & FILE_SHARE_WRITE) ?
75 deny |= (share_access & (FILE_SHARE_READ)) ?
78 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
79 access_mask, allow, share_access, deny));
81 result = gpfs_set_share_fn(fsp->fh->fd, allow, deny);
83 if (errno == ENOSYS) {
84 DEBUG(5, ("VFS module vfs_gpfs loaded, but no gpfs "
85 "support has been compiled into Samba. Allowing access\n"));
88 DEBUG(10, ("gpfs_set_share failed: %s\n",
96 int set_gpfs_lease(int fd, int leasetype)
98 int gpfs_type = GPFS_LEASE_NONE;
100 if (gpfs_set_lease_fn == NULL) {
105 if (leasetype == F_RDLCK) {
106 gpfs_type = GPFS_LEASE_READ;
108 if (leasetype == F_WRLCK) {
109 gpfs_type = GPFS_LEASE_WRITE;
112 /* we unconditionally set CAP_LEASE, rather than looking for
113 -1/EACCES as there is a bug in some versions of
114 libgpfs_gpl.so which results in a leaked fd on /dev/ss0
115 each time we try this with the wrong capabilities set
117 linux_set_lease_capability();
118 return gpfs_set_lease_fn(fd, gpfs_type);
121 int smbd_gpfs_getacl(char *pathname, int flags, void *acl)
123 if (gpfs_getacl_fn == NULL) {
128 return gpfs_getacl_fn(pathname, flags, acl);
131 int smbd_gpfs_putacl(char *pathname, int flags, void *acl)
133 if (gpfs_putacl_fn == NULL) {
138 return gpfs_putacl_fn(pathname, flags, acl);
141 int smbd_gpfs_ftruncate(int fd, gpfs_off64_t length)
143 if (gpfs_ftruncate_fn == NULL) {
148 return gpfs_ftruncate_fn(fd, length);
151 int smbd_gpfs_get_realfilename_path(char *pathname, char *filenamep,
154 if (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)
164 if (gpfs_get_winattrs_path_fn == NULL) {
168 DEBUG(10, ("gpfs_get_winattrs_path:open call %s\n",pathname));
169 return gpfs_get_winattrs_path_fn(pathname, attrs);
172 int smbd_fget_gpfs_winattrs(int fd, struct gpfs_winattr *attrs)
174 if (gpfs_get_winattrs_fn == NULL) {
178 DEBUG(10, ("gpfs_get_winattrs:open call %d\n", fd));
179 return gpfs_get_winattrs_fn(fd, attrs);
182 int smbd_gpfs_prealloc(int fd, gpfs_off64_t start, gpfs_off64_t bytes)
184 if (gpfs_prealloc_fn == NULL) {
189 return gpfs_prealloc_fn(fd, start, bytes);
192 int set_gpfs_winattrs(char *pathname,int flags,struct gpfs_winattr *attrs)
194 if (gpfs_set_winattrs_path_fn == NULL) {
199 DEBUG(10, ("gpfs_set_winattrs_path:open call %s\n",pathname));
200 return gpfs_set_winattrs_path_fn(pathname,flags, attrs);
203 int get_gpfs_quota(const char *pathname, int type, int id,
204 struct gpfs_quotaInfo *qi)
208 if (!gpfs_quotactl_fn) {
214 ret = gpfs_quotactl_fn(discard_const_p(char, pathname),
215 GPFS_QCMD(Q_GETQUOTA, type), id, qi);
218 if (errno == GPFS_E_NO_QUOTA_INST) {
219 DEBUG(10, ("Quotas disabled on GPFS filesystem.\n"));
221 DEBUG(0, ("Get quota failed, type %d, id, %d, "
222 "errno %d.\n", type, id, errno));
228 DEBUG(10, ("quota type %d, id %d, blk u:%lld h:%lld s:%lld gt:%u\n",
229 type, id, qi->blockUsage, qi->blockHardLimit,
230 qi->blockSoftLimit, qi->blockGraceTime));
235 int get_gpfs_fset_id(const char *pathname, int *fset_id)
237 int err, fd, errno_fcntl;
240 gpfsFcntlHeader_t hdr;
241 gpfsGetFilesetName_t fsn;
244 if (!gpfs_fcntl_fn || !gpfs_getfilesetid_fn) {
249 arg.hdr.totalLength = sizeof(arg);
250 arg.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
251 arg.hdr.fcntlReserved = 0;
252 arg.fsn.structLen = sizeof(arg.fsn);
253 arg.fsn.structType = GPFS_FCNTL_GET_FILESETNAME;
255 fd = open(pathname, O_RDONLY);
257 DEBUG(1, ("Could not open %s: %s\n",
258 pathname, strerror(errno)));
262 err = gpfs_fcntl_fn(fd, &arg);
268 DEBUG(1, ("GPFS_FCNTL_GET_FILESETNAME for %s failed: %s\n",
269 pathname, strerror(errno)));
273 err = gpfs_getfilesetid_fn(discard_const_p(char, pathname),
274 arg.fsn.buffer, fset_id);
276 DEBUG(1, ("gpfs_getfilesetid for %s failed: %s\n",
277 pathname, strerror(errno)));
282 void smbd_gpfs_lib_init()
284 if (gpfs_lib_init_fn) {
285 int rc = gpfs_lib_init_fn(0);
286 DEBUG(10, ("gpfs_lib_init() finished with rc %d "
287 "and errno %d\n", rc, errno));
289 DEBUG(10, ("libgpfs lacks gpfs_lib_init\n"));
293 static void timespec_to_gpfs_time(struct timespec ts, gpfs_timestruc_t *gt,
296 if (!null_timespec(ts)) {
298 gt[idx].tv_sec = ts.tv_sec;
299 gt[idx].tv_nsec = ts.tv_nsec;
300 DEBUG(10, ("Setting GPFS time %d, flags 0x%x\n", idx, *flags));
304 int smbd_gpfs_set_times_path(char *path, struct smb_file_time *ft)
306 gpfs_timestruc_t gpfs_times[4];
310 if (!gpfs_set_times_path_fn) {
315 ZERO_ARRAY(gpfs_times);
316 timespec_to_gpfs_time(ft->atime, gpfs_times, 0, &flags);
317 timespec_to_gpfs_time(ft->mtime, gpfs_times, 1, &flags);
318 /* No good mapping from LastChangeTime to ctime, not storing */
319 timespec_to_gpfs_time(ft->create_time, gpfs_times, 3, &flags);
322 DEBUG(10, ("nothing to do, return to avoid EINVAL\n"));
326 rc = gpfs_set_times_path_fn(path, flags, gpfs_times);
329 DEBUG(1,("gpfs_set_times() returned with error %s\n",
336 static bool init_gpfs_function_lib(void *plibhandle_pointer,
338 void *pfn_pointer, const char *fn_name)
340 bool did_open_here = false;
341 void **libhandle_pointer = (void **)plibhandle_pointer;
342 void **fn_pointer = (void **)pfn_pointer;
344 DEBUG(10, ("trying to load name %s from %s\n",
347 if (*libhandle_pointer == NULL) {
348 *libhandle_pointer = dlopen(libname, RTLD_LAZY);
349 did_open_here = true;
351 if (*libhandle_pointer == NULL) {
352 DEBUG(10, ("Could not open lib %s\n", libname));
356 *fn_pointer = dlsym(*libhandle_pointer, fn_name);
357 if (*fn_pointer == NULL) {
358 DEBUG(10, ("Did not find symbol %s in lib %s\n",
361 dlclose(*libhandle_pointer);
362 *libhandle_pointer = NULL;
370 static bool init_gpfs_function(void *fn_pointer, const char *fn_name)
372 static void *libgpfs_handle = NULL;
373 static void *libgpfs_gpl_handle = NULL;
375 if (init_gpfs_function_lib(&libgpfs_handle, "libgpfs.so",
376 fn_pointer, fn_name)) {
379 if (init_gpfs_function_lib(&libgpfs_gpl_handle, "libgpfs_gpl.so",
380 fn_pointer, fn_name)) {
388 init_gpfs_function(&gpfs_set_share_fn, "gpfs_set_share");
389 init_gpfs_function(&gpfs_set_lease_fn, "gpfs_set_lease");
390 init_gpfs_function(&gpfs_getacl_fn, "gpfs_getacl");
391 init_gpfs_function(&gpfs_putacl_fn, "gpfs_putacl");
392 init_gpfs_function(&gpfs_get_realfilename_path_fn,
393 "gpfs_get_realfilename_path");
394 init_gpfs_function(&gpfs_get_winattrs_path_fn,"gpfs_get_winattrs_path");
395 init_gpfs_function(&gpfs_set_winattrs_path_fn,"gpfs_set_winattrs_path");
396 init_gpfs_function(&gpfs_get_winattrs_fn,"gpfs_get_winattrs");
397 init_gpfs_function(&gpfs_prealloc_fn, "gpfs_prealloc");
398 init_gpfs_function(&gpfs_ftruncate_fn, "gpfs_ftruncate");
399 init_gpfs_function(&gpfs_lib_init_fn,"gpfs_lib_init");
400 init_gpfs_function(&gpfs_set_times_path_fn, "gpfs_set_times_path");
401 init_gpfs_function(&gpfs_quotactl_fn, "gpfs_quotactl");
402 init_gpfs_function(&gpfs_fcntl_fn, "gpfs_fcntl");
403 init_gpfs_function(&gpfs_getfilesetid_fn, "gpfs_getfilesetid");