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/>.
26 static void *libgpfs_handle = NULL;
27 static BOOL gpfs_share_modes;
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);
35 BOOL set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
38 unsigned int allow = GPFS_SHARE_NONE;
39 unsigned int deny = GPFS_DENY_NONE;
42 if (!gpfs_share_modes) {
46 if (gpfs_set_share_fn == NULL) {
50 if ((fsp == NULL) || (fsp->fh == NULL) || (fsp->fh->fd < 0)) {
51 /* No real file, don't disturb */
55 allow |= (access_mask & (FILE_WRITE_DATA|FILE_APPEND_DATA|
56 DELETE_ACCESS)) ? GPFS_SHARE_WRITE : 0;
57 allow |= (access_mask & (FILE_READ_DATA|FILE_EXECUTE)) ?
60 if (allow == GPFS_SHARE_NONE) {
61 DEBUG(10, ("special case am=no_access:%x\n",access_mask));
64 deny |= (share_access & FILE_SHARE_WRITE) ?
66 deny |= (share_access & (FILE_SHARE_READ)) ?
69 DEBUG(10, ("am=%x, allow=%d, sa=%x, deny=%d\n",
70 access_mask, allow, share_access, deny));
72 result = gpfs_set_share_fn(fsp->fh->fd, allow, deny);
74 if (errno == ENOSYS) {
75 DEBUG(5, ("VFS module vfs_gpfs loaded, but no gpfs "
76 "support has been compiled into Samba. Allowing access\n"));
79 DEBUG(10, ("gpfs_set_share failed: %s\n",
87 int set_gpfs_lease(int fd, int leasetype)
89 int gpfs_type = GPFS_LEASE_NONE;
91 if (!gpfs_share_modes) {
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;
106 return gpfs_set_lease_fn(fd, gpfs_type);
109 int smbd_gpfs_getacl(char *pathname, int flags, void *acl)
111 if (gpfs_getacl_fn == NULL) {
116 return gpfs_getacl_fn(pathname, flags, acl);
119 int smbd_gpfs_putacl(char *pathname, int flags, void *acl)
121 if (gpfs_putacl_fn == NULL) {
126 return gpfs_putacl_fn(pathname, flags, acl);
131 if (libgpfs_handle != NULL) {
135 libgpfs_handle = sys_dlopen("libgpfs_gpl.so", RTLD_LAZY);
137 if (libgpfs_handle == NULL) {
138 DEBUG(10, ("sys_dlopen for libgpfs_gpl failed: %s\n",
143 DEBUG(10, ("libgpfs_gpl.so loaded\n"));
145 gpfs_set_share_fn = sys_dlsym(libgpfs_handle, "gpfs_set_share");
146 if (gpfs_set_share_fn == NULL) {
147 DEBUG(3, ("libgpfs_gpl.so does not contain the symbol "
148 "'gpfs_set_share'\n"));
152 gpfs_set_lease_fn = sys_dlsym(libgpfs_handle, "gpfs_set_lease");
153 if (gpfs_set_lease_fn == NULL) {
154 DEBUG(3, ("libgpfs_gpl.so does not contain the symbol "
155 "'gpfs_set_lease'\n"));
156 sys_dlclose(libgpfs_handle);
161 gpfs_getacl_fn = sys_dlsym(libgpfs_handle, "gpfs_getacl");
162 if (gpfs_getacl_fn == NULL) {
163 DEBUG(3, ("libgpfs_gpl.so does not contain the symbol "
168 gpfs_putacl_fn = sys_dlsym(libgpfs_handle, "gpfs_putacl");
169 if (gpfs_putacl_fn == NULL) {
170 DEBUG(3, ("libgpfs_gpl.so does not contain the symbol "
175 if (lp_parm_bool(-1, "gpfs", "sharemodes", True)) {
176 gpfs_share_modes = True;
178 gpfs_share_modes = False;
184 sys_dlclose(libgpfs_handle);
185 /* leave libgpfs_handle != NULL around, no point
187 gpfs_set_share_fn = NULL;
188 gpfs_set_lease_fn = NULL;
189 gpfs_getacl_fn = NULL;
190 gpfs_putacl_fn = NULL;
195 int set_gpfs_lease(int snum, int leasetype)
197 DEBUG(0, ("'VFS module smbgpfs loaded, without gpfs support compiled\n"));
199 /* We need to indicate that no GPFS is around by returning ENOSYS, so
200 * that the normal linux kernel oplock code is called. */
205 BOOL set_gpfs_sharemode(files_struct *fsp, uint32 access_mask,
208 DEBUG(0, ("VFS module - smbgpfs.so loaded, without gpfs support compiled\n"));
209 /* Don't disturb but complain */
213 int smbd_gpfs_getacl(char *pathname, int flags, void *acl)
219 int smbd_gpfs_putacl(char *pathname, int flags, void *acl)
230 #endif /* HAVE_GPFS */