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;
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 = ctf_get_pos_addr(pos);
memcpy(destaddr, string_definition->value, len);
end:
if (!ctf_move_pos(pos, len * CHAR_BIT))
return -EFAULT;
return 0;
}
int ctf_sequence_write(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
struct definition_sequence *sequence_definition =
container_of(definition, struct definition_sequence, p);
struct declaration_sequence *sequence_declaration =
sequence_definition->declaration;
struct bt_declaration *elem = sequence_declaration->elem;
struct ctf_stream_pos *pos = ctf_pos(ppos);
if (elem->id == CTF_TYPE_INTEGER) {
struct declaration_integer *integer_declaration =
container_of(elem, struct declaration_integer, p);
if (integer_declaration->encoding == CTF_STRING_UTF8
|| integer_declaration->encoding == CTF_STRING_ASCII) {
if (integer_declaration->len == CHAR_BIT
&& integer_declaration->p.alignment == CHAR_BIT) {
uint64_t len = bt_sequence_len(sequence_definition);
if (!ctf_align_pos(pos, integer_declaration->p.alignment))
return -EFAULT;
if (!ctf_pos_access_ok(pos, len * CHAR_BIT))
return -EFAULT;
memcpy((char *) ctf_get_pos_addr(pos),
sequence_definition->string->str, (size_t)len);
if (!ctf_move_pos(pos, len * CHAR_BIT))
return -EFAULT;
return 0;
}
}
}
return bt_sequence_rw(ppos, definition);
}
int ctf_struct_rw(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
struct bt_declaration *declaration = definition->declaration;
struct ctf_stream_pos *pos = ctf_pos(ppos);
ctf_align_pos(pos, declaration->alignment);
return bt_struct_rw(ppos, definition);
}
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;
ssize_t max_len_bits;
char *srcaddr;
if (!ctf_align_pos(pos, string_declaration->p.alignment))
return -EFAULT;
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 = bt_strnlen(srcaddr, (size_t) max_len_bits / CHAR_BIT) + 1;
/* Truncated string, unexpected. Trace probably corrupted. */
if (srcaddr[len - 1] != '\0')
return -EFAULT;
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;
}
