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| Rev 2678 | Rev 2679 | ||
|---|---|---|---|
| Line 152... | Line 152... | ||
| 152 | */ |
152 | */ |
| 153 | (void) ipc_data_write_finalize(callid, buf, size); |
153 | (void) ipc_data_write_finalize(callid, buf, size); |
| 154 | 154 | ||
| 155 | /* |
155 | /* |
| 156 | * Lookup the root node of the filesystem being mounted. |
156 | * Lookup the root node of the filesystem being mounted. |
| 157 | * In this case, we don't need to take the unlink_futex as the root node |
157 | * In this case, we don't need to take the namespace_futex as the root |
| 158 | * cannot be removed. However, we do take a reference to it so that |
158 | * node cannot be removed. However, we do take a reference to it so |
| 159 | * we can track how many times it has been mounted. |
159 | * that we can track how many times it has been mounted. |
| 160 | */ |
160 | */ |
| 161 | int rc; |
161 | int rc; |
| 162 | vfs_triplet_t mounted_root; |
162 | vfs_triplet_t mounted_root; |
| 163 | rc = lookup_root(fs_handle, dev_handle, &mounted_root); |
163 | rc = lookup_root(fs_handle, dev_handle, &mounted_root); |
| 164 | if (rc != EOK) { |
164 | if (rc != EOK) { |
| Line 180... | Line 180... | ||
| 180 | futex_down(&rootfs_futex); |
180 | futex_down(&rootfs_futex); |
| 181 | if (rootfs.fs_handle) { |
181 | if (rootfs.fs_handle) { |
| 182 | /* |
182 | /* |
| 183 | * We already have the root FS. |
183 | * We already have the root FS. |
| 184 | */ |
184 | */ |
| 185 | futex_down(&unlink_futex); |
185 | futex_down(&namespace_futex); |
| 186 | rc = vfs_lookup_internal(buf, size, &mp, NULL); |
186 | rc = vfs_lookup_internal(buf, size, &mp, NULL); |
| 187 | if (rc != EOK) { |
187 | if (rc != EOK) { |
| 188 | /* |
188 | /* |
| 189 | * The lookup failed for some reason. |
189 | * The lookup failed for some reason. |
| 190 | */ |
190 | */ |
| 191 | futex_up(&unlink_futex); |
191 | futex_up(&namespace_futex); |
| 192 | futex_up(&rootfs_futex); |
192 | futex_up(&rootfs_futex); |
| 193 | vfs_node_put(mr_node); /* failed -> drop reference */ |
193 | vfs_node_put(mr_node); /* failed -> drop reference */ |
| 194 | free(buf); |
194 | free(buf); |
| 195 | ipc_answer_0(rid, rc); |
195 | ipc_answer_0(rid, rc); |
| 196 | return; |
196 | return; |
| 197 | } |
197 | } |
| 198 | mp_node = vfs_node_get(&mp); |
198 | mp_node = vfs_node_get(&mp); |
| 199 | if (!mp_node) { |
199 | if (!mp_node) { |
| 200 | futex_up(&unlink_futex); |
200 | futex_up(&namespace_futex); |
| 201 | futex_up(&rootfs_futex); |
201 | futex_up(&rootfs_futex); |
| 202 | vfs_node_put(mr_node); /* failed -> drop reference */ |
202 | vfs_node_put(mr_node); /* failed -> drop reference */ |
| 203 | free(buf); |
203 | free(buf); |
| 204 | ipc_answer_0(rid, ENOMEM); |
204 | ipc_answer_0(rid, ENOMEM); |
| 205 | return; |
205 | return; |
| Line 207... | Line 207... | ||
| 207 | /* |
207 | /* |
| 208 | * Now we hold a reference to mp_node. |
208 | * Now we hold a reference to mp_node. |
| 209 | * It will be dropped upon the corresponding VFS_UNMOUNT. |
209 | * It will be dropped upon the corresponding VFS_UNMOUNT. |
| 210 | * This prevents the mount point from being deleted. |
210 | * This prevents the mount point from being deleted. |
| 211 | */ |
211 | */ |
| 212 | futex_up(&unlink_futex); |
212 | futex_up(&namespace_futex); |
| 213 | } else { |
213 | } else { |
| 214 | /* |
214 | /* |
| 215 | * We still don't have the root file system mounted. |
215 | * We still don't have the root file system mounted. |
| 216 | */ |
216 | */ |
| 217 | if ((size == 1) && (buf[0] == '/')) { |
217 | if ((size == 1) && (buf[0] == '/')) { |