*
* Strings read/write functions.
*
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
*/
+#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/ctf/types.h>
#include <limits.h> /* C99 limits */
#include <string.h>
-void ctf_string_copy(struct stream_pos *dest, struct stream_pos *src,
- const struct type_string *string_type)
+int ctf_string_read(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
+ struct definition_string *string_definition =
+ container_of(definition, struct definition_string, p);
+ const struct declaration_string *string_declaration =
+ string_definition->declaration;
+ struct ctf_stream_pos *pos = ctf_pos(ppos);
size_t len;
- char *destaddr, *srcaddr;
+ ssize_t max_len_bits;
+ char *srcaddr;
- align_pos(src, string_type->p.alignment);
- srcaddr = get_pos_addr(src);
- len = strlen(srcaddr) + 1;
- if (dest->dummy)
- goto end;
- align_pos(dest, string_type->p.alignment);
- destaddr = get_pos_addr(dest);
- strcpy(destaddr, srcaddr);
-end:
- move_pos(dest, len);
- move_pos(src, len);
-}
+ if (!ctf_align_pos(pos, string_declaration->p.alignment))
+ return -EFAULT;
-void ctf_string_read(char **dest, struct stream_pos *src,
- const struct type_string *string_type)
-{
- size_t len;
- char *srcaddr;
+ srcaddr = ctf_get_pos_addr(pos);
+ if (pos->offset == EOF)
+ return -EFAULT;
+ /* Not counting \0. Counting in bits. */
+ max_len_bits = pos->packet_size - pos->offset - CHAR_BIT;
+ if (max_len_bits < 0)
+ return -EFAULT;
+ /* Add \0, counting in bytes. */
+ len = strnlen(srcaddr, (size_t) max_len_bits / CHAR_BIT) + 1;
+ /* Truncated string, unexpected. Trace probably corrupted. */
+ if (srcaddr[len - 1] != '\0')
+ return -EFAULT;
- align_pos(src, string_type->p.alignment);
- srcaddr = get_pos_addr(src);
- len = strlen(srcaddr) + 1;
- *dest = g_realloc(*dest, len);
- strcpy(*dest, srcaddr);
- move_pos(src, len);
+ if (string_definition->alloc_len < len) {
+ string_definition->value =
+ g_realloc(string_definition->value, len);
+ string_definition->alloc_len = len;
+ }
+ printf_debug("CTF string read %s\n", srcaddr);
+ memcpy(string_definition->value, srcaddr, len);
+ string_definition->len = len;
+ if (!ctf_move_pos(pos, len * CHAR_BIT))
+ return -EFAULT;
+ return 0;
}
-void ctf_string_write(struct stream_pos *dest, const char *src,
- const struct type_string *string_type)
+int ctf_string_write(struct bt_stream_pos *ppos,
+ struct bt_definition *definition)
{
+ struct definition_string *string_definition =
+ container_of(definition, struct definition_string, p);
+ const struct declaration_string *string_declaration =
+ string_definition->declaration;
+ struct ctf_stream_pos *pos = ctf_pos(ppos);
size_t len;
char *destaddr;
- align_pos(dest, string_type->p.alignment);
- len = strlen(src) + 1;
- if (dest->dummy)
+ if (!ctf_align_pos(pos, string_declaration->p.alignment))
+ return -EFAULT;
+ assert(string_definition->value != NULL);
+ len = string_definition->len;
+
+ if (!ctf_pos_access_ok(pos, len))
+ return -EFAULT;
+
+ if (pos->dummy)
goto end;
- destaddr = get_pos_addr(dest);
- strcpy(destaddr, src);
+ destaddr = ctf_get_pos_addr(pos);
+ memcpy(destaddr, string_definition->value, len);
end:
- move_pos(dest, len);
-}
-
-void ctf_string_free_temp(char *string)
-{
- g_free(string);
+ if (!ctf_move_pos(pos, len * CHAR_BIT))
+ return -EFAULT;
+ return 0;
}