build: ensure compiler flags are properly detected
[samba.git] / source3 / modules / vfs_onefs.c
1 /*
2  * Unix SMB/CIFS implementation.
3  * Support for OneFS
4  *
5  * Copyright (C) Tim Prouty, 2008
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #include "includes.h"
22 #include "onefs.h"
23 #include "onefs_config.h"
24
25 #undef DBGC_CLASS
26 #define DBGC_CLASS DBGC_VFS
27
28 static int onefs_connect(struct vfs_handle_struct *handle, const char *service,
29                          const char *user)
30 {
31         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
32
33         if (ret < 0) {
34                 return ret;
35         }
36
37         ret = onefs_load_config(handle->conn);
38         if (ret) {
39                 SMB_VFS_NEXT_DISCONNECT(handle);
40                 DEBUG(3, ("Load config failed: %s\n", strerror(errno)));
41                 return ret;
42         }
43
44         return 0;
45 }
46
47 static int onefs_mkdir(vfs_handle_struct *handle, const char *path,
48                        mode_t mode)
49 {
50         /* SMB_VFS_MKDIR should never be called in vfs_onefs */
51         SMB_ASSERT(false);
52         return SMB_VFS_NEXT_MKDIR(handle, path, mode);
53 }
54
55 static int onefs_open(vfs_handle_struct *handle,
56                       struct smb_filename *smb_fname,
57                       files_struct *fsp, int flags, mode_t mode)
58 {
59         /* SMB_VFS_OPEN should never be called in vfs_onefs */
60         SMB_ASSERT(false);
61         return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
62 }
63
64 static ssize_t onefs_sendfile(vfs_handle_struct *handle, int tofd,
65                               files_struct *fromfsp, const DATA_BLOB *header,
66                               SMB_OFF_T offset, size_t count)
67 {
68         ssize_t result;
69
70         START_PROFILE_BYTES(syscall_sendfile, count);
71         result = onefs_sys_sendfile(handle->conn, tofd, fromfsp->fh->fd,
72                                     header, offset, count);
73         END_PROFILE(syscall_sendfile);
74         return result;
75 }
76
77 static ssize_t onefs_recvfile(vfs_handle_struct *handle, int fromfd,
78                               files_struct *tofsp, SMB_OFF_T offset,
79                               size_t count)
80 {
81         ssize_t result;
82
83         START_PROFILE_BYTES(syscall_recvfile, count);
84         result = onefs_sys_recvfile(fromfd, tofsp->fh->fd, offset, count);
85         END_PROFILE(syscall_recvfile);
86         return result;
87 }
88
89 static uint64_t onefs_get_alloc_size(struct vfs_handle_struct *handle,
90                                      files_struct *fsp,
91                                      const SMB_STRUCT_STAT *sbuf)
92 {
93         uint64_t result;
94
95         START_PROFILE(syscall_get_alloc_size);
96
97         if(S_ISDIR(sbuf->st_ex_mode)) {
98                 result = 0;
99                 goto out;
100         }
101
102         /* Just use the file size since st_blocks is unreliable on OneFS. */
103         result = get_file_size_stat(sbuf);
104
105         if (fsp && fsp->initial_allocation_size)
106                 result = MAX(result,fsp->initial_allocation_size);
107
108         result = smb_roundup(handle->conn, result);
109
110  out:
111         END_PROFILE(syscall_get_alloc_size);
112         return result;
113 }
114
115 static struct file_id onefs_file_id_create(struct vfs_handle_struct *handle,
116                                            const SMB_STRUCT_STAT *sbuf)
117 {
118         struct file_id key;
119
120         /* the ZERO_STRUCT ensures padding doesn't break using the key as a
121          * blob */
122         ZERO_STRUCT(key);
123
124         key.devid = sbuf->st_ex_dev;
125         key.inode = sbuf->st_ex_ino;
126         key.extid = sbuf->vfs_private;
127
128         return key;
129 }
130
131 static int onefs_statvfs(vfs_handle_struct *handle, const char *path,
132                          vfs_statvfs_struct *statbuf)
133 {
134         struct statvfs statvfs_buf;
135         int result;
136
137         DEBUG(5, ("Calling SMB_STAT_VFS \n"));
138         result = statvfs(path, &statvfs_buf);
139         ZERO_STRUCTP(statbuf);
140
141         if (!result) {
142                 statbuf->OptimalTransferSize = statvfs_buf.f_iosize;
143                 statbuf->BlockSize = statvfs_buf.f_bsize;
144                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
145                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
146                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
147                 statbuf->TotalFileNodes = statvfs_buf.f_files;
148                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
149                 statbuf->FsIdentifier =
150                     (((uint64_t)statvfs_buf.f_fsid.val[0]<<32) &
151                         0xffffffff00000000LL) |
152                     (uint64_t)statvfs_buf.f_fsid.val[1];
153         }
154         return result;
155 }
156
157 static int onefs_get_real_filename(vfs_handle_struct *handle, const char *path,
158                                    const char *name, TALLOC_CTX *mem_ctx,
159                                    char **found_name)
160 {
161         struct stat sb;
162         struct connection_struct *conn = handle->conn;
163         struct stat_extra se;
164         int result;
165         char *unmangled_name = NULL;
166         char *full_name = NULL;
167
168         /* First demangle the name if necessary. */
169         if (!conn->case_sensitive && mangle_is_mangled(name, conn->params) &&
170             mangle_lookup_name_from_8_3(mem_ctx, name, &unmangled_name,
171                                         conn->params)) {
172                 /* Name is now unmangled. */
173                 name = unmangled_name;
174         }
175
176         /* Do the case insensitive stat. */
177         ZERO_STRUCT(se);
178         se.se_version = ESTAT_CURRENT_VERSION;
179         se.se_flags = ESTAT_CASE_INSENSITIVE | ESTAT_SYMLINK_NOFOLLOW;
180
181         if (*path != '\0') {
182                 if (!(full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name))) {
183                         errno = ENOMEM;
184                         DEBUG(2, ("talloc_asprintf failed\n"));
185                         result = -1;
186                         goto done;
187                 }
188         }
189
190         if ((result = estat(full_name ? full_name : name, &sb, &se)) != 0) {
191                 DEBUG(2, ("error calling estat: %s\n", strerror(errno)));
192                 goto done;
193         }
194
195         *found_name = talloc_strdup(mem_ctx, se.se_realname);
196         if (*found_name == NULL) {
197                 errno = ENOMEM;
198                 result = -1;
199                 goto done;
200         }
201
202 done:
203         TALLOC_FREE(full_name);
204         TALLOC_FREE(unmangled_name);
205         return result;
206 }
207
208 static int onefs_ntimes(vfs_handle_struct *handle,
209                         const struct smb_filename *smb_fname,
210                         struct smb_file_time *ft)
211 {
212         int flags = 0;
213         struct timespec times[3];
214
215         if (!null_timespec(ft->atime)) {
216                 flags |= VT_ATIME;
217                 times[0] = ft->atime;
218                 DEBUG(6,("**** onefs_ntimes: actime: %s.%d\n",
219                         time_to_asc(convert_timespec_to_time_t(ft->atime)),
220                         ft->atime.tv_nsec));
221         }
222
223         if (!null_timespec(ft->mtime)) {
224                 flags |= VT_MTIME;
225                 times[1] = ft->mtime;
226                 DEBUG(6,("**** onefs_ntimes: modtime: %s.%d\n",
227                         time_to_asc(convert_timespec_to_time_t(ft->mtime)),
228                         ft->mtime.tv_nsec));
229         }
230
231         if (!null_timespec(ft->create_time)) {
232                 flags |= VT_BTIME;
233                 times[2] = ft->create_time;
234                 DEBUG(6,("**** onefs_ntimes: createtime: %s.%d\n",
235                    time_to_asc(convert_timespec_to_time_t(ft->create_time)),
236                    ft->create_time.tv_nsec));
237         }
238
239         return onefs_vtimes_streams(handle, smb_fname, flags, times);
240 }
241
242 static uint32_t onefs_fs_capabilities(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res)
243 {
244         uint32_t result = 0;
245
246         if (!lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
247                 PARM_IGNORE_STREAMS, PARM_IGNORE_STREAMS_DEFAULT)) {
248                 result |= FILE_NAMED_STREAMS;
249         }
250
251         result |= SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
252         *p_ts_res = TIMESTAMP_SET_MSEC;
253         return result;
254 }
255
256 static struct vfs_fn_pointers onefs_fns = {
257         .connect_fn = onefs_connect,
258         .fs_capabilities = onefs_fs_capabilities,
259         .opendir = onefs_opendir,
260         .readdir = onefs_readdir,
261         .seekdir = onefs_seekdir,
262         .telldir = onefs_telldir,
263         .rewind_dir = onefs_rewinddir,
264         .mkdir = onefs_mkdir,
265         .closedir = onefs_closedir,
266         .init_search_op = onefs_init_search_op,
267         .open = onefs_open,
268         .create_file = onefs_create_file,
269         .close_fn = onefs_close,
270         .sendfile = onefs_sendfile,
271         .recvfile = onefs_recvfile,
272         .rename = onefs_rename,
273         .stat = onefs_stat,
274         .fstat = onefs_fstat,
275         .lstat = onefs_lstat,
276         .get_alloc_size = onefs_get_alloc_size,
277         .unlink = onefs_unlink,
278         .ntimes = onefs_ntimes,
279         .file_id_create = onefs_file_id_create,
280         .streaminfo = onefs_streaminfo,
281         .brl_lock_windows = onefs_brl_lock_windows,
282         .brl_unlock_windows = onefs_brl_unlock_windows,
283         .brl_cancel_windows = onefs_brl_cancel_windows,
284         .strict_lock = onefs_strict_lock,
285         .strict_unlock = onefs_strict_unlock,
286         .notify_watch = onefs_notify_watch,
287         .fget_nt_acl = onefs_fget_nt_acl,
288         .get_nt_acl = onefs_get_nt_acl,
289         .fset_nt_acl = onefs_fset_nt_acl,
290         .statvfs = onefs_statvfs,
291         .get_real_filename = onefs_get_real_filename,
292 };
293
294 NTSTATUS vfs_onefs_init(void)
295 {
296         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "onefs",
297                                 &onefs_fns);
298 }