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;
}
int ctf_sequence_read(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;
g_string_assign(sequence_definition->string, "");
g_string_insert_len(sequence_definition->string,
(gssize)0, (const gchar *)ctf_get_pos_addr(pos),
(gssize)len);
if (!ctf_move_pos(pos, len * CHAR_BIT))
return -EFAULT;
return 0;
}
}
}
return bt_sequence_rw(ppos, definition);
}
static
void write_event_header(struct ctf_stream_pos *pos, char *line,
char **tline, size_t len, size_t *tlen,
uint64_t *ts)
{
if (!s_timestamp)
return;
/* Only need to be executed on first pass (dummy) */
if (pos->dummy) {
int has_timestamp = 0;
unsigned long sec, usec, msec;
unsigned int year, mon, mday, hour, min;
/* Extract time from input line */
if (sscanf(line, "[%lu.%lu] ", &sec, &usec) == 2) {
*ts = (uint64_t) sec * USEC_PER_SEC + (uint64_t) usec;
/*
* Default CTF clock has 1GHz frequency. Convert
* from usec to nsec.
*/
*ts *= NSEC_PER_USEC;
has_timestamp = 1;
} else if (sscanf(line, "[%u-%u-%u %u:%u:%lu.%lu] ",
&year, &mon, &mday, &hour, &min,
&sec, &msec) == 7) {
time_t ep_sec;
struct tm ti;
memset(&ti, 0, sizeof(ti));
ti.tm_year = year - 1900; /* from 1900 */
ti.tm_mon = mon - 1; /* 0 to 11 */
ti.tm_mday = mday;
ti.tm_hour = hour;
ti.tm_min = min;
ti.tm_sec = sec;
ep_sec = bt_timegm(&ti);
if (ep_sec != (time_t) -1) {
*ts = (uint64_t) ep_sec * NSEC_PER_SEC
+ (uint64_t) msec * NSEC_PER_MSEC;
}
has_timestamp = 1;
}
if (has_timestamp) {
*tline = strchr(line, ']');
assert(*tline);
(*tline)++;
if ((*tline)[0] == ' ') {
(*tline)++;
}
*tlen = len + line - *tline;
}
}
/* timestamp */
if (!ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT))
goto error;
if (!pos->dummy)
*(uint64_t *) ctf_get_pos_addr(pos) = *ts;
if (!ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT))
goto error;
return;
error:
fprintf(stderr, "[error] Out of packet bounds when writing event header\n");
abort();
}