bsd/hfs/hfs_cprotect.c

32 #include <sys/xattr.h>
124  * Read xattr data off the cnode. Then, if conditions permit,
558 	/* prepare to write the xattr out */
668  * - write out the xattr if it hasn't already been saved
794 	/* write out the xattr if it's new */
924 		panic("Content Protection: cp_xattr called with xattr == NULL");
989  * Stores new xattr data on the cnode.
1153 	struct cp_root_xattr xattr;
1157 	err = cp_getrootxattr (hfsmp, &xattr);
1160 		hfsmp->hfs_running_cp_major_vers = xattr.major_version;
1215  * Initializes a new cprotect entry with xattr data from the cnode.
1238 			struct cp_xattr_v4 *xattr = NULL;
1239 			MALLOC (xattr, struct cp_xattr_v4*, sizeof(struct cp_xattr_v4), M_TEMP, M_WAITOK);
1240 			if (xattr == NULL) {
1244 			bzero(xattr, sizeof (struct cp_xattr_v4));
1245 			attrsize = sizeof(*xattr);
1247 			uio_addiov(auio, CAST_USER_ADDR_T(xattr), attrsize);
1252 				FREE (xattr, M_TEMP);
1257 			xattr->xattr_major_version = OSSwapLittleToHostInt16(xattr->xattr_major_version);
1258 			xattr->xattr_minor_version = OSSwapLittleToHostInt16(xattr->xattr_minor_version);
1259 			xattr->key_size = OSSwapLittleToHostInt32(xattr->key_size);
1260 			xattr->flags = OSSwapLittleToHostInt32(xattr->flags);
1261 			xattr->persistent_class = OSSwapLittleToHostInt32(xattr->persistent_class);
1263 			if (xattr->xattr_major_version != hfsmp->hfs_running_cp_major_vers ) {
1264 				printf("hfs: cp_getxattr: bad xattr version %d expecting %d\n",
1265 					xattr->xattr_major_version, hfsmp->hfs_running_cp_major_vers);
1267 				FREE (xattr, M_TEMP);
1276 			if (xattr->key_size > CP_MAX_WRAPPEDKEYSIZE) {
1278 				FREE (xattr, M_TEMP);
1283 			/* set up entry with information from xattr */
1284 			entry = cp_entry_alloc(xattr->key_size);
1286 				FREE (xattr, M_TEMP);
1291 			entry->cp_pclass = xattr->persistent_class;
1292 			if (xattr->xattr_major_version >= CP_NEW_MAJOR_VERS) {
1295 			bcopy(xattr->persistent_key, entry->cp_persistent_key, xattr->key_size);
1297 			FREE (xattr, M_TEMP);
1302 			struct cp_xattr_v2 *xattr = NULL;
1303 			MALLOC (xattr, struct cp_xattr_v2*, sizeof(struct cp_xattr_v2), M_TEMP, M_WAITOK);
1304 			if (xattr == NULL) {
1308 			bzero (xattr, sizeof (struct cp_xattr_v2));
1309 			attrsize = sizeof(*xattr);
1311 			uio_addiov(auio, CAST_USER_ADDR_T(xattr), attrsize);
1316 				FREE (xattr, M_TEMP);
1321 			xattr->xattr_major_version = OSSwapLittleToHostInt16(xattr->xattr_major_version);
1322 			xattr->xattr_minor_version = OSSwapLittleToHostInt16(xattr->xattr_minor_version);
1323 			xattr->key_size = OSSwapLittleToHostInt32(xattr->key_size);
1324 			xattr->flags = OSSwapLittleToHostInt32(xattr->flags);
1325 			xattr->persistent_class = OSSwapLittleToHostInt32(xattr->persistent_class);
1327 			if (xattr->xattr_major_version != hfsmp->hfs_running_cp_major_vers) {
1328 				printf("hfs: cp_getxattr: bad xattr version %d expecting %d\n",
1329 					xattr->xattr_major_version, hfsmp->hfs_running_cp_major_vers);
1331 				FREE (xattr, M_TEMP);
1340 			if (xattr->key_size > CP_V2_WRAPPEDKEYSIZE) {
1342 				FREE (xattr, M_TEMP);
1345 			/* set up entry with information from xattr */
1346 			entry = cp_entry_alloc(xattr->key_size);
1348 				FREE (xattr, M_TEMP);
1352 			entry->cp_pclass = xattr->persistent_class;
1353 			bcopy(xattr->persistent_key, entry->cp_persistent_key, xattr->key_size);
1354 			FREE (xattr, M_TEMP);