Commit | Line | Data |
---|---|---|
8f4e91de SW |
1 | #include <linux/in.h> |
2 | ||
8f4e91de | 3 | #include "super.h" |
3d14c5d2 YS |
4 | #include "mds_client.h" |
5 | #include <linux/ceph/ceph_debug.h> | |
6 | ||
7 | #include "ioctl.h" | |
8f4e91de SW |
8 | |
9 | ||
10 | /* | |
11 | * ioctls | |
12 | */ | |
13 | ||
14 | /* | |
15 | * get and set the file layout | |
16 | */ | |
17 | static long ceph_ioctl_get_layout(struct file *file, void __user *arg) | |
18 | { | |
496ad9aa | 19 | struct ceph_inode_info *ci = ceph_inode(file_inode(file)); |
8f4e91de SW |
20 | struct ceph_ioctl_layout l; |
21 | int err; | |
22 | ||
496ad9aa | 23 | err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT); |
8f4e91de SW |
24 | if (!err) { |
25 | l.stripe_unit = ceph_file_layout_su(ci->i_layout); | |
26 | l.stripe_count = ceph_file_layout_stripe_count(ci->i_layout); | |
27 | l.object_size = ceph_file_layout_object_size(ci->i_layout); | |
28 | l.data_pool = le32_to_cpu(ci->i_layout.fl_pg_pool); | |
3469ac1a | 29 | l.preferred_osd = (s32)-1; |
8f4e91de SW |
30 | if (copy_to_user(arg, &l, sizeof(l))) |
31 | return -EFAULT; | |
32 | } | |
33 | ||
34 | return err; | |
35 | } | |
36 | ||
e49bf4c5 SW |
37 | static long __validate_layout(struct ceph_mds_client *mdsc, |
38 | struct ceph_ioctl_layout *l) | |
39 | { | |
40 | int i, err; | |
41 | ||
e49bf4c5 SW |
42 | /* validate striping parameters */ |
43 | if ((l->object_size & ~PAGE_MASK) || | |
44 | (l->stripe_unit & ~PAGE_MASK) || | |
45f2e081 SW |
45 | (l->stripe_unit != 0 && |
46 | ((unsigned)l->object_size % (unsigned)l->stripe_unit))) | |
e49bf4c5 SW |
47 | return -EINVAL; |
48 | ||
49 | /* make sure it's a valid data pool */ | |
50 | mutex_lock(&mdsc->mutex); | |
51 | err = -EINVAL; | |
52 | for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++) | |
53 | if (mdsc->mdsmap->m_data_pg_pools[i] == l->data_pool) { | |
54 | err = 0; | |
55 | break; | |
56 | } | |
57 | mutex_unlock(&mdsc->mutex); | |
58 | if (err) | |
59 | return err; | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
8f4e91de SW |
64 | static long ceph_ioctl_set_layout(struct file *file, void __user *arg) |
65 | { | |
496ad9aa | 66 | struct inode *inode = file_inode(file); |
5f21c96d | 67 | struct inode *parent_inode; |
3d14c5d2 | 68 | struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
8f4e91de SW |
69 | struct ceph_mds_request *req; |
70 | struct ceph_ioctl_layout l; | |
496ad9aa | 71 | struct ceph_inode_info *ci = ceph_inode(file_inode(file)); |
a35eca95 | 72 | struct ceph_ioctl_layout nl; |
e49bf4c5 | 73 | int err; |
8f4e91de | 74 | |
8f4e91de SW |
75 | if (copy_from_user(&l, arg, sizeof(l))) |
76 | return -EFAULT; | |
77 | ||
a35eca95 | 78 | /* validate changed params against current layout */ |
496ad9aa | 79 | err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT); |
702aeb1f | 80 | if (err) |
a35eca95 GF |
81 | return err; |
82 | ||
702aeb1f | 83 | memset(&nl, 0, sizeof(nl)); |
a35eca95 GF |
84 | if (l.stripe_count) |
85 | nl.stripe_count = l.stripe_count; | |
702aeb1f SW |
86 | else |
87 | nl.stripe_count = ceph_file_layout_stripe_count(ci->i_layout); | |
a35eca95 GF |
88 | if (l.stripe_unit) |
89 | nl.stripe_unit = l.stripe_unit; | |
702aeb1f SW |
90 | else |
91 | nl.stripe_unit = ceph_file_layout_su(ci->i_layout); | |
a35eca95 GF |
92 | if (l.object_size) |
93 | nl.object_size = l.object_size; | |
702aeb1f SW |
94 | else |
95 | nl.object_size = ceph_file_layout_object_size(ci->i_layout); | |
a35eca95 GF |
96 | if (l.data_pool) |
97 | nl.data_pool = l.data_pool; | |
702aeb1f SW |
98 | else |
99 | nl.data_pool = ceph_file_layout_pg_pool(ci->i_layout); | |
100 | ||
101 | /* this is obsolete, and always -1 */ | |
102 | nl.preferred_osd = le64_to_cpu(-1); | |
a35eca95 | 103 | |
e49bf4c5 SW |
104 | err = __validate_layout(mdsc, &nl); |
105 | if (err) | |
106 | return err; | |
8f4e91de SW |
107 | |
108 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT, | |
109 | USE_AUTH_MDS); | |
110 | if (IS_ERR(req)) | |
111 | return PTR_ERR(req); | |
70b666c3 SW |
112 | req->r_inode = inode; |
113 | ihold(inode); | |
8f4e91de SW |
114 | req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL; |
115 | ||
116 | req->r_args.setlayout.layout.fl_stripe_unit = | |
117 | cpu_to_le32(l.stripe_unit); | |
118 | req->r_args.setlayout.layout.fl_stripe_count = | |
119 | cpu_to_le32(l.stripe_count); | |
120 | req->r_args.setlayout.layout.fl_object_size = | |
121 | cpu_to_le32(l.object_size); | |
122 | req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool); | |
8f4e91de | 123 | |
5f21c96d | 124 | parent_inode = ceph_get_dentry_parent_inode(file->f_dentry); |
8f4e91de | 125 | err = ceph_mdsc_do_request(mdsc, parent_inode, req); |
5f21c96d | 126 | iput(parent_inode); |
8f4e91de SW |
127 | ceph_mdsc_put_request(req); |
128 | return err; | |
129 | } | |
130 | ||
571dba52 GF |
131 | /* |
132 | * Set a layout policy on a directory inode. All items in the tree | |
133 | * rooted at this inode will inherit this layout on creation, | |
134 | * (It doesn't apply retroactively ) | |
135 | * unless a subdirectory has its own layout policy. | |
136 | */ | |
137 | static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) | |
138 | { | |
496ad9aa | 139 | struct inode *inode = file_inode(file); |
571dba52 GF |
140 | struct ceph_mds_request *req; |
141 | struct ceph_ioctl_layout l; | |
e49bf4c5 | 142 | int err; |
571dba52 GF |
143 | struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
144 | ||
145 | /* copy and validate */ | |
146 | if (copy_from_user(&l, arg, sizeof(l))) | |
147 | return -EFAULT; | |
148 | ||
e49bf4c5 SW |
149 | err = __validate_layout(mdsc, &l); |
150 | if (err) | |
151 | return err; | |
571dba52 GF |
152 | |
153 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT, | |
154 | USE_AUTH_MDS); | |
155 | ||
156 | if (IS_ERR(req)) | |
157 | return PTR_ERR(req); | |
70b666c3 SW |
158 | req->r_inode = inode; |
159 | ihold(inode); | |
571dba52 GF |
160 | |
161 | req->r_args.setlayout.layout.fl_stripe_unit = | |
162 | cpu_to_le32(l.stripe_unit); | |
163 | req->r_args.setlayout.layout.fl_stripe_count = | |
164 | cpu_to_le32(l.stripe_count); | |
165 | req->r_args.setlayout.layout.fl_object_size = | |
166 | cpu_to_le32(l.object_size); | |
167 | req->r_args.setlayout.layout.fl_pg_pool = | |
168 | cpu_to_le32(l.data_pool); | |
571dba52 GF |
169 | |
170 | err = ceph_mdsc_do_request(mdsc, inode, req); | |
171 | ceph_mdsc_put_request(req); | |
172 | return err; | |
173 | } | |
174 | ||
8f4e91de SW |
175 | /* |
176 | * Return object name, size/offset information, and location (OSD | |
177 | * number, network address) for a given file offset. | |
178 | */ | |
179 | static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) | |
180 | { | |
181 | struct ceph_ioctl_dataloc dl; | |
496ad9aa | 182 | struct inode *inode = file_inode(file); |
8f4e91de | 183 | struct ceph_inode_info *ci = ceph_inode(inode); |
3d14c5d2 YS |
184 | struct ceph_osd_client *osdc = |
185 | &ceph_sb_to_client(inode->i_sb)->client->osdc; | |
8f4e91de SW |
186 | u64 len = 1, olen; |
187 | u64 tmp; | |
51042122 | 188 | struct ceph_pg pgid; |
457712a0 | 189 | int r; |
8f4e91de SW |
190 | |
191 | /* copy and validate */ | |
192 | if (copy_from_user(&dl, arg, sizeof(dl))) | |
193 | return -EFAULT; | |
194 | ||
195 | down_read(&osdc->map_sem); | |
e8afad65 | 196 | r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len, |
457712a0 SW |
197 | &dl.object_no, &dl.object_offset, |
198 | &olen); | |
494ddd11 | 199 | if (r < 0) { |
200 | up_read(&osdc->map_sem); | |
457712a0 | 201 | return -EIO; |
494ddd11 | 202 | } |
8f4e91de SW |
203 | dl.file_offset -= dl.object_offset; |
204 | dl.object_size = ceph_file_layout_object_size(ci->i_layout); | |
205 | dl.block_size = ceph_file_layout_su(ci->i_layout); | |
206 | ||
207 | /* block_offset = object_offset % block_size */ | |
208 | tmp = dl.object_offset; | |
209 | dl.block_offset = do_div(tmp, dl.block_size); | |
210 | ||
211 | snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx", | |
212 | ceph_ino(inode), dl.object_no); | |
41766f87 | 213 | |
2fbcbff1 | 214 | r = ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap, |
215 | ceph_file_layout_pg_pool(ci->i_layout)); | |
216 | if (r < 0) { | |
217 | up_read(&osdc->map_sem); | |
218 | return r; | |
219 | } | |
8f4e91de | 220 | |
8f4e91de SW |
221 | dl.osd = ceph_calc_pg_primary(osdc->osdmap, pgid); |
222 | if (dl.osd >= 0) { | |
223 | struct ceph_entity_addr *a = | |
224 | ceph_osd_addr(osdc->osdmap, dl.osd); | |
225 | if (a) | |
226 | memcpy(&dl.osd_addr, &a->in_addr, sizeof(dl.osd_addr)); | |
227 | } else { | |
228 | memset(&dl.osd_addr, 0, sizeof(dl.osd_addr)); | |
229 | } | |
230 | up_read(&osdc->map_sem); | |
231 | ||
232 | /* send result back to user */ | |
233 | if (copy_to_user(arg, &dl, sizeof(dl))) | |
234 | return -EFAULT; | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
8c6e9229 SW |
239 | static long ceph_ioctl_lazyio(struct file *file) |
240 | { | |
241 | struct ceph_file_info *fi = file->private_data; | |
496ad9aa | 242 | struct inode *inode = file_inode(file); |
8c6e9229 SW |
243 | struct ceph_inode_info *ci = ceph_inode(inode); |
244 | ||
245 | if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) { | |
be655596 | 246 | spin_lock(&ci->i_ceph_lock); |
8c6e9229 SW |
247 | ci->i_nr_by_mode[fi->fmode]--; |
248 | fi->fmode |= CEPH_FILE_MODE_LAZY; | |
249 | ci->i_nr_by_mode[fi->fmode]++; | |
be655596 | 250 | spin_unlock(&ci->i_ceph_lock); |
8c6e9229 SW |
251 | dout("ioctl_layzio: file %p marked lazy\n", file); |
252 | ||
253 | ceph_check_caps(ci, 0, NULL); | |
254 | } else { | |
255 | dout("ioctl_layzio: file %p already lazy\n", file); | |
256 | } | |
257 | return 0; | |
258 | } | |
259 | ||
4918b6d1 SW |
260 | static long ceph_ioctl_syncio(struct file *file) |
261 | { | |
262 | struct ceph_file_info *fi = file->private_data; | |
263 | ||
264 | fi->flags |= CEPH_F_SYNC; | |
265 | return 0; | |
266 | } | |
267 | ||
8f4e91de SW |
268 | long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
269 | { | |
270 | dout("ioctl file %p cmd %u arg %lu\n", file, cmd, arg); | |
271 | switch (cmd) { | |
272 | case CEPH_IOC_GET_LAYOUT: | |
273 | return ceph_ioctl_get_layout(file, (void __user *)arg); | |
274 | ||
275 | case CEPH_IOC_SET_LAYOUT: | |
276 | return ceph_ioctl_set_layout(file, (void __user *)arg); | |
277 | ||
571dba52 GF |
278 | case CEPH_IOC_SET_LAYOUT_POLICY: |
279 | return ceph_ioctl_set_layout_policy(file, (void __user *)arg); | |
280 | ||
8f4e91de SW |
281 | case CEPH_IOC_GET_DATALOC: |
282 | return ceph_ioctl_get_dataloc(file, (void __user *)arg); | |
8c6e9229 SW |
283 | |
284 | case CEPH_IOC_LAZYIO: | |
285 | return ceph_ioctl_lazyio(file); | |
4918b6d1 SW |
286 | |
287 | case CEPH_IOC_SYNCIO: | |
288 | return ceph_ioctl_syncio(file); | |
8f4e91de | 289 | } |
571dba52 | 290 | |
8f4e91de SW |
291 | return -ENOTTY; |
292 | } |