/*
- * Copyright (C) 2007-2013 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** Define an osl table description for a blob table. */
#define DEFINE_BLOB_TABLE_DESC(table_name) \
- struct osl_table_description table_name ## _table_desc = { \
+ static struct osl_table_description table_name ## _table_desc = { \
.name = #table_name, \
.num_columns = NUM_BLOB_COLUMNS, \
.flags = OSL_LARGE_TABLE, \
ret2 = para_printf(&rmbd.pb, "no matches, nothing removed\n");
else {
ret2 = para_printf(&rmbd.pb, "removed %d blobs\n", pmd.num_matches);
- afs_event(BLOB_RENAME, NULL, table);
+ afs_event(BLOB_REMOVE, NULL, table);
}
out:
if (ret2 >= 0 && rmbd.pb.offset)
afs_cb_result_handler, cc);
}
-static void com_addblob_callback(struct osl_table *table, __a_unused int fd,
+static void com_addblob_callback(struct osl_table *table, int fd,
const struct osl_object *query)
{
struct osl_object objs[NUM_BLOB_COLUMNS];
- char *name = query->data;
- size_t name_len = strlen(name) + 1;
+ char *name = query->data, *msg;
+ size_t name_len = strlen(name) + 1, msg_len;
uint32_t id;
unsigned num_rows;
int ret;
if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
goto out;
if (ret >= 0) { /* we already have a blob with this name */
+ ret = osl(osl_get_object(table, row, BLOBCOL_ID, &obj));
+ if (ret < 0)
+ goto out;
+ id = *(uint32_t *)obj.data;
obj.data = name + name_len;
obj.size = query->size - name_len;
ret = osl(osl_update_object(table, row, BLOBCOL_DEF, &obj));
afs_event(BLOB_ADD, NULL, table);
out:
if (ret < 0)
- PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+ msg_len = xasprintf(&msg, "could not add %s: %s\n", name,
+ para_strerror(-ret));
+ else
+ msg_len = xasprintf(&msg, "added %s as id %u\n", name, id);
+ pass_buffer_as_shm(fd, SBD_OUTPUT, msg, msg_len);
+ free(msg);
}
-/*
- * write input from fd to dynamically allocated buffer,
- * but maximal max_size byte.
- */
-static int fd2buf(struct stream_cipher_context *scc, unsigned max_size, struct osl_object *obj)
+/* Write input from fd to dynamically allocated buffer, but maximal 10M. */
+static int fd2buf(struct stream_cipher_context *scc, struct osl_object *obj)
{
- const size_t chunk_size = 1024;
- size_t size = 2048, received = 0;
+ size_t max_size = 10 * 1024 * 1024;
int ret;
- char *buf = para_malloc(size);
+ struct iovec iov;
- for (;;) {
- ret = sc_recv_bin_buffer(scc, buf + received, chunk_size);
- if (ret <= 0)
- break;
- received += ret;
- if (received + chunk_size >= size) {
- size *= 2;
- ret = -E_INPUT_TOO_LARGE;
- if (size > max_size)
- break;
- buf = para_realloc(buf, size);
- }
+ obj->data = NULL;
+ obj->size = 0;
+again:
+ do {
+ ret = recv_sb(scc, SBD_BLOB_DATA, max_size, &iov);
+ } while (ret == 0);
+
+ if (ret < 0) {
+ free(obj->data);
+ obj->data = NULL;
+ obj->size = 0;
+ return ret;
}
- obj->data = buf;
- obj->size = received;
- if (ret < 0)
- free(buf);
- return ret;
+ if (iov.iov_len == 0) /* end of blob */
+ return 1;
+ if (!obj->data) {
+ obj->data = iov.iov_base;
+ obj->size = iov.iov_len;
+ } else {
+ obj->data = para_realloc(obj->data, obj->size + iov.iov_len);
+ memcpy(obj->data + obj->size, iov.iov_base, iov.iov_len);
+ obj->size += iov.iov_len;
+ free(iov.iov_base);
+ max_size -= iov.iov_len;
+ }
+ goto again;
+ return 1;
}
/*
* Read data from a file descriptor, and send it to the afs process.
*
- * \param scc crypt context containing the file descriptor to read data from.
+ * \param cc Contains the file descriptor to read data from.
* \param arg_obj Pointer to the arguments to \a f.
* \param f The callback function.
- * \param max_len Don't read more than that many bytes from stdin.
* \param result_handler See \ref send_callback_request.
* \param private_result_data See \ref send_callback_request.
*
- * This function is used by commands that wish to let para_server store
- * arbitrary data specified by the user (for instance the add_blob family of
- * commands). First, at most \a max_len bytes are read and decrypted from the
- * file descriptor given by \a scc. The result is concatenated with the buffer
- * given by \a arg_obj, and the combined buffer is made available to the afs
- * process via the callback method. See \ref send_callback_request for details.
+ * This function is used by the addblob commands that instruct para_server to
+ * store arbitrary data in a blob table. Input data is read and decrypted from
+ * the file descriptor given by \a cc. This data is concatenated with the
+ * buffer given by \a arg_obj, and the combined buffer is made available to the
+ * afs process via the callback method. See \ref send_callback_request for
+ * details.
*
* \return Negative on errors, the return value of the underlying call to
* send_callback_request() otherwise.
*/
static int stdin_command(struct command_context *cc, struct osl_object *arg_obj,
- callback_function *f, unsigned max_len,
- callback_result_handler *result_handler,
+ callback_function *f, callback_result_handler *result_handler,
void *private_result_data)
{
struct osl_object query, stdin_obj;
int ret;
- if (cc->use_sideband)
- ret = send_sb(&cc->scc, NULL, 0, SBD_AWAITING_DATA, false);
- else
- ret = sc_send_buffer(&cc->scc, AWAITING_DATA_MSG);
+ ret = send_sb(&cc->scc, NULL, 0, SBD_AWAITING_DATA, false);
if (ret < 0)
return ret;
- ret = fd2buf(&cc->scc, max_len, &stdin_obj);
+ ret = fd2buf(&cc->scc, &stdin_obj);
if (ret < 0)
return ret;
query.size = arg_obj->size + stdin_obj.size;
query.data = para_malloc(query.size);
memcpy(query.data, arg_obj->data, arg_obj->size);
- memcpy((char *)query.data + arg_obj->size, stdin_obj.data, stdin_obj.size);
+ if (stdin_obj.size > 0)
+ memcpy((char *)query.data + arg_obj->size, stdin_obj.data,
+ stdin_obj.size);
free(stdin_obj.data);
ret = send_callback_request(f, &query, result_handler, private_result_data);
free(query.data);
return -E_BLOB_SYNTAX;
arg_obj.size = strlen(cc->argv[1]) + 1;
arg_obj.data = (char *)cc->argv[1];
- return stdin_command(cc, &arg_obj, f, 10 * 1024 * 1024, NULL, NULL);
+ return stdin_command(cc, &arg_obj, f, afs_cb_result_handler, cc);
}
-/* FIXME: Print output to client, not to log file */
-static void com_mvblob_callback(struct osl_table *table, __a_unused int fd,
+static void com_mvblob_callback(struct osl_table *table, int fd,
const struct osl_object *query)
{
char *src = (char *) query->data;
struct osl_object obj = {.data = src, .size = strlen(src) + 1};
char *dest = src + obj.size;
struct osl_row *row;
+ struct para_buffer pb = {
+ .max_size = shm_get_shmmax(),
+ .private_data = &fd,
+ .max_size_handler = afs_max_size_handler
+ };
int ret = osl(osl_get_row(table, BLOBCOL_NAME, &obj, &row));
- if (ret < 0)
+ if (ret < 0) {
+ para_printf(&pb, "could not locate %s: %s\n", src,
+ para_strerror(-ret));
goto out;
+ }
obj.data = dest;
obj.size = strlen(dest) + 1;
ret = osl(osl_update_object(table, row, BLOBCOL_NAME, &obj));
- if (ret < 0)
+ if (ret < 0) {
+ para_printf(&pb, "failed to update object %s: %s\n", dest,
+ para_strerror(-ret));
goto out;
+ }
afs_event(BLOB_RENAME, NULL, table);
out:
- if (ret < 0)
- PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+ if (pb.offset)
+ pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
+ free(pb.buf);
}
static int com_mvblob(callback_function *f, struct command_context *cc)
{
+ int ret;
+
if (cc->argc != 3)
return -E_MOOD_SYNTAX;
- return send_option_arg_callback_request(NULL, cc->argc - 1,
- cc->argv + 1, f, NULL, NULL);
+ ret = send_option_arg_callback_request(NULL, cc->argc - 1,
+ cc->argv + 1, f, afs_cb_result_handler, cc);
+ if (ret < 0)
+ send_strerror(cc, -ret);
+ return ret;
}
#define DEFINE_BLOB_COMMAND(cmd_name, table_name, cmd_prefix) \
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