* SOFTWARE.
*/
+#define BT_LOG_TAG "PLUGIN-TEXT-DMESG-SRC"
+#include "logging.h"
+
#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
#include <stdio.h>
#include <assert.h>
-#include <babeltrace/babeltrace-internal.h>
-#include <babeltrace/graph/component.h>
-#include <babeltrace/graph/clock-class-priority-map.h>
+#include <babeltrace/babeltrace.h>
+#include <babeltrace/values-internal.h>
+#include <babeltrace/compat/utc-internal.h>
+#include <babeltrace/compat/stdio-internal.h>
#include <glib.h>
+#define NSEC_PER_USEC 1000UL
+#define NSEC_PER_MSEC 1000000UL
+#define NSEC_PER_SEC 1000000000ULL
+#define USEC_PER_SEC 1000000UL
+
struct dmesg_component;
struct dmesg_notif_iter {
struct dmesg_component *dmesg_comp;
+ char *linebuf;
+ size_t linebuf_len;
FILE *fp;
};
struct dmesg_component {
struct {
GString *path;
- bool read_from_stdin;
+ bt_bool read_from_stdin;
} params;
- struct bt_ctf_packet *packet;
+ struct bt_ctf_trace *trace;
+ struct bt_ctf_stream_class *stream_class;
struct bt_ctf_event_class *event_class;
struct bt_ctf_stream *stream;
+ struct bt_ctf_packet *packet;
+ struct bt_ctf_clock_class *clock_class;
struct bt_clock_class_priority_map *cc_prio_map;
};
static
-int check_params(struct dmesg_component *dmesg_comp, struct bt_value *params)
+struct bt_ctf_field_type *create_packet_header_ft(void)
{
- struct bt_value *read_from_stdin;
- struct bt_value *path;
- const char *path_str;
+ struct bt_ctf_field_type *root_ft = NULL;
+ struct bt_ctf_field_type *ft = NULL;
+ int ret;
+
+ root_ft = bt_ctf_field_type_structure_create();
+ if (!root_ft) {
+ BT_LOGE_STR("Cannot create an empty structure field type object.");
+ goto error;
+ }
+
+ ft = bt_ctf_field_type_integer_create(32);
+ if (!ft) {
+ BT_LOGE_STR("Cannot create an integer field type object.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_structure_add_field(root_ft, ft, "magic");
+ if (ret) {
+ BT_LOGE("Cannot add `magic` field type to structure field type: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ BT_PUT(ft);
+ ft = bt_ctf_field_type_integer_create(8);
+ if (!ft) {
+ BT_LOGE_STR("Cannot create an integer field type object.");
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(root_ft);
+
+end:
+ bt_put(ft);
+ return root_ft;
+}
+
+static
+struct bt_ctf_field_type *create_packet_context_ft(void)
+{
+ struct bt_ctf_field_type *root_ft = NULL;
+ struct bt_ctf_field_type *ft = NULL;
+ int ret;
+
+ root_ft = bt_ctf_field_type_structure_create();
+ if (!root_ft) {
+ BT_LOGE_STR("Cannot create an empty structure field type object.");
+ goto error;
+ }
+
+ ft = bt_ctf_field_type_integer_create(64);
+ if (!ft) {
+ BT_LOGE_STR("Cannot create an integer field type object.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_structure_add_field(root_ft,
+ ft, "content_size");
+ if (ret) {
+ BT_LOGE("Cannot add `content_size` field type to structure field type: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ BT_PUT(ft);
+ ft = bt_ctf_field_type_integer_create(64);
+ if (!ft) {
+ BT_LOGE_STR("Cannot create an integer field type object.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_structure_add_field(root_ft,
+ ft, "packet_size");
+ if (ret) {
+ BT_LOGE("Cannot add `packet_size` field type to structure field type: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(root_ft);
+
+end:
+ bt_put(ft);
+ return root_ft;
+}
+
+static
+struct bt_ctf_field_type *create_event_header_ft(
+ struct bt_ctf_clock_class *clock_class)
+{
+ struct bt_ctf_field_type *root_ft = NULL;
+ struct bt_ctf_field_type *ft = NULL;
+ int ret;
+
+ root_ft = bt_ctf_field_type_structure_create();
+ if (!root_ft) {
+ BT_LOGE_STR("Cannot create an empty structure field type object.");
+ goto error;
+ }
+
+ ft = bt_ctf_field_type_integer_create(64);
+ if (!ft) {
+ BT_LOGE_STR("Cannot create an integer field type object.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_integer_set_mapped_clock_class(ft, clock_class);
+ if (ret) {
+ BT_LOGE("Cannot map integer field type to clock class: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_structure_add_field(root_ft,
+ ft, "timestamp");
+ if (ret) {
+ BT_LOGE("Cannot add `timestamp` field type to structure field type: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(root_ft);
+
+end:
+ bt_put(ft);
+ return root_ft;
+}
+
+static
+struct bt_ctf_field_type *create_event_payload_ft(void)
+{
+ struct bt_ctf_field_type *root_ft = NULL;
+ struct bt_ctf_field_type *ft = NULL;
+ int ret;
+
+ root_ft = bt_ctf_field_type_structure_create();
+ if (!root_ft) {
+ BT_LOGE_STR("Cannot create an empty structure field type object.");
+ goto error;
+ }
+
+ ft = bt_ctf_field_type_string_create();
+ if (!ft) {
+ BT_LOGE_STR("Cannot create a string field type object.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_structure_add_field(root_ft,
+ ft, "str");
+ if (ret) {
+ BT_LOGE("Cannot add `str` field type to structure field type: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(root_ft);
+
+end:
+ bt_put(ft);
+ return root_ft;
+}
+
+static
+struct bt_ctf_clock_class *create_clock_class(void)
+{
+ return bt_ctf_clock_class_create("the_clock", 1000000000);
+}
+
+static
+int create_meta(struct dmesg_component *dmesg_comp, bool has_ts)
+{
+ struct bt_ctf_field_type *ft = NULL;
+ const char *trace_name = NULL;
+ gchar *basename = NULL;
int ret = 0;
- if (!params || !bt_value_is_map(params)) {
- fprintf(stderr, "Expecting a map value as parameters.\n");
+ dmesg_comp->trace = bt_ctf_trace_create();
+ if (!dmesg_comp->trace) {
+ BT_LOGE_STR("Cannot create an empty trace object.");
+ goto error;
+ }
+
+ ft = create_packet_header_ft();
+ if (!ft) {
+ BT_LOGE_STR("Cannot create packet header field type.");
+ goto error;
+ }
+
+ ret = bt_ctf_trace_set_packet_header_type(dmesg_comp->trace, ft);
+ if (ret) {
+ BT_LOGE_STR("Cannot set trace's packet header field type.");
+ goto error;
+ }
+
+ if (dmesg_comp->params.read_from_stdin) {
+ trace_name = "STDIN";
+ } else {
+ basename = g_path_get_basename(dmesg_comp->params.path->str);
+ assert(basename);
+
+ if (strcmp(basename, G_DIR_SEPARATOR_S) != 0 &&
+ strcmp(basename, ".") != 0) {
+ trace_name = basename;
+ }
+ }
+
+ if (trace_name) {
+ ret = bt_ctf_trace_set_name(dmesg_comp->trace, trace_name);
+ if (ret) {
+ BT_LOGE("Cannot set trace's name: name=\"%s\"", trace_name);
+ goto error;
+ }
+ }
+
+ dmesg_comp->stream_class = bt_ctf_stream_class_create_empty(NULL);
+ if (!dmesg_comp->stream_class) {
+ BT_LOGE_STR("Cannot create an empty stream class object.");
+ goto error;
+ }
+
+ bt_put(ft);
+ ft = create_packet_context_ft();
+ if (!ft) {
+ BT_LOGE_STR("Cannot create packet context field type.");
+ goto error;
+ }
+
+ ret = bt_ctf_stream_class_set_packet_context_type(
+ dmesg_comp->stream_class, ft);
+ if (ret) {
+ BT_LOGE_STR("Cannot set stream class's packet context field type.");
+ goto error;
+ }
+
+ dmesg_comp->cc_prio_map = bt_clock_class_priority_map_create();
+ if (!dmesg_comp->cc_prio_map) {
+ BT_LOGE_STR("Cannot create empty clock class priority map.");
+ goto error;
+ }
+
+ if (has_ts) {
+ dmesg_comp->clock_class = create_clock_class();
+ if (!dmesg_comp->clock_class) {
+ BT_LOGE_STR("Cannot create clock class.");
+ goto error;
+ }
+
+ ret = bt_ctf_trace_add_clock_class(dmesg_comp->trace,
+ dmesg_comp->clock_class);
+ if (ret) {
+ BT_LOGE_STR("Cannot add clock class to trace.");
+ goto error;
+ }
+
+ ret = bt_clock_class_priority_map_add_clock_class(
+ dmesg_comp->cc_prio_map, dmesg_comp->clock_class, 0);
+ if (ret) {
+ BT_LOGE_STR("Cannot add clock class to clock class priority map.");
+ goto error;
+ }
+
+ bt_put(ft);
+ ft = create_event_header_ft(dmesg_comp->clock_class);
+ if (!ft) {
+ BT_LOGE_STR("Cannot create event header field type.");
+ goto error;
+ }
+
+ ret = bt_ctf_stream_class_set_event_header_type(
+ dmesg_comp->stream_class, ft);
+ if (ret) {
+ BT_LOGE_STR("Cannot set stream class's event header field type.");
+ goto error;
+ }
+ }
+
+ dmesg_comp->event_class = bt_ctf_event_class_create("string");
+ if (!dmesg_comp->event_class) {
+ BT_LOGE_STR("Cannot create an empty event class object.");
+ goto error;
+ }
+
+ bt_put(ft);
+ ft = create_event_payload_ft();
+ if (!ft) {
+ BT_LOGE_STR("Cannot create event payload field type.");
goto error;
}
+ ret = bt_ctf_event_class_set_payload_type(dmesg_comp->event_class, ft);
+ if (ret) {
+ BT_LOGE_STR("Cannot set event class's event payload field type.");
+ goto error;
+ }
+
+ ret = bt_ctf_stream_class_add_event_class(dmesg_comp->stream_class,
+ dmesg_comp->event_class);
+ if (ret) {
+ BT_LOGE("Cannot add event class to stream class: ret=%d", ret);
+ goto error;
+ }
+
+ ret = bt_ctf_trace_add_stream_class(dmesg_comp->trace,
+ dmesg_comp->stream_class);
+ if (ret) {
+ BT_LOGE("Cannot add event class to stream class: ret=%d", ret);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ bt_put(ft);
+
+ if (basename) {
+ g_free(basename);
+ }
+
+ return ret;
+}
+
+static
+int handle_params(struct dmesg_component *dmesg_comp, struct bt_value *params)
+{
+ struct bt_value *read_from_stdin = NULL;
+ struct bt_value *path = NULL;
+ const char *path_str;
+ int ret = 0;
+
read_from_stdin = bt_value_map_get(params, "read-from-stdin");
if (read_from_stdin) {
if (!bt_value_is_bool(read_from_stdin)) {
- fprintf(stderr, "Expecting a boolean value for `read-from-stdin` parameter.\n");
+ BT_LOGE("Expecting a boolean value for the `read-from-stdin` parameter: "
+ "type=%s",
+ bt_value_type_string(
+ bt_value_get_type(read_from_stdin)));
goto error;
}
path = bt_value_map_get(params, "path");
if (path) {
if (dmesg_comp->params.read_from_stdin) {
- fprintf(stderr, "Cannot specify both `read-from-stdin` and `path` parameters.\n");
+ BT_LOGE_STR("Cannot specify both `read-from-stdin` and `path` parameters.");
goto error;
}
if (!bt_value_is_string(path)) {
- fprintf(stderr, "Expecting a string value for `path` parameter.\n");
+ BT_LOGE("Expecting a string value for the `path` parameter: "
+ "type=%s",
+ bt_value_type_string(
+ bt_value_get_type(path)));
goto error;
}
- ret = bt_value_bool_get(path, &path_str);
+ ret = bt_value_string_get(path, &path_str);
assert(ret == 0);
g_string_assign(dmesg_comp->params.path, path_str);
} else {
if (!dmesg_comp->params.read_from_stdin) {
- fprintf(stderr, "Expecting `path` parameter or `read-from-stdin` parameter set to true.\n");
+ BT_LOGE_STR("Expecting `path` parameter or true `read-from-stdin` parameter.");
goto error;
}
}
}
static
-int create_stream()
+struct bt_ctf_field *create_packet_header_field(struct bt_ctf_field_type *ft)
+{
+ struct bt_ctf_field *ph = NULL;
+ struct bt_ctf_field *magic = NULL;
+ int ret;
+
+ ph = bt_ctf_field_create(ft);
+ if (!ph) {
+ BT_LOGE_STR("Cannot create field object.");
+ goto error;
+ }
+
+ magic = bt_ctf_field_structure_get_field_by_name(ph, "magic");
+ if (!magic) {
+ BT_LOGE_STR("Cannot get `magic` field from structure field.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_unsigned_integer_set_value(magic, 0xc1fc1fc1);
+ if (ret) {
+ BT_LOGE_STR("Cannot set integer field's value.");
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(ph);
+
+end:
+ bt_put(magic);
+ return ph;
+}
+
+static
+struct bt_ctf_field *create_packet_context_field(struct bt_ctf_field_type *ft)
+{
+ struct bt_ctf_field *pc = NULL;
+ struct bt_ctf_field *field = NULL;
+ int ret;
+
+ pc = bt_ctf_field_create(ft);
+ if (!pc) {
+ BT_LOGE_STR("Cannot create field object.");
+ goto error;
+ }
+
+ field = bt_ctf_field_structure_get_field_by_name(pc, "content_size");
+ if (!field) {
+ BT_LOGE_STR("Cannot get `content_size` field from structure field.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_unsigned_integer_set_value(field, 0);
+ if (ret) {
+ BT_LOGE_STR("Cannot set integer field's value.");
+ goto error;
+ }
+
+ bt_put(field);
+ field = bt_ctf_field_structure_get_field_by_name(pc, "packet_size");
+ if (!field) {
+ BT_LOGE_STR("Cannot get `packet_size` field from structure field.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_unsigned_integer_set_value(field, 0);
+ if (ret) {
+ BT_LOGE_STR("Cannot set integer field's value.");
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(pc);
+
+end:
+ bt_put(field);
+ return pc;
+}
+
+static
+int create_packet_and_stream(struct dmesg_component *dmesg_comp)
+{
+ int ret = 0;
+ struct bt_ctf_field_type *ft = NULL;
+ struct bt_ctf_field *field = NULL;
+
+ dmesg_comp->stream = bt_ctf_stream_create(dmesg_comp->stream_class,
+ NULL);
+ if (!dmesg_comp->stream) {
+ BT_LOGE_STR("Cannot create stream object.");
+ goto error;
+ }
+
+ dmesg_comp->packet = bt_ctf_packet_create(dmesg_comp->stream);
+ if (!dmesg_comp->packet) {
+ BT_LOGE_STR("Cannot create packet object.");
+ goto error;
+ }
+
+ ft = bt_ctf_trace_get_packet_header_type(dmesg_comp->trace);
+ assert(ft);
+ field = create_packet_header_field(ft);
+ if (!field) {
+ BT_LOGE_STR("Cannot create packet header field.");
+ goto error;
+ }
+
+ ret = bt_ctf_packet_set_header(dmesg_comp->packet, field);
+ if (ret) {
+ BT_LOGE_STR("Cannot set packet's header field.");
+ goto error;
+ }
+
+ bt_put(ft);
+ bt_put(field);
+ ft = bt_ctf_stream_class_get_packet_context_type(
+ dmesg_comp->stream_class);
+ assert(ft);
+ field = create_packet_context_field(ft);
+ if (!field) {
+ BT_LOGE_STR("Cannot create packet context field.");
+ goto error;
+ }
+
+ ret = bt_ctf_packet_set_context(dmesg_comp->packet, field);
+ if (ret) {
+ BT_LOGE_STR("Cannot set packet's context field.");
+ goto error;
+ }
+
+ ret = bt_ctf_trace_set_is_static(dmesg_comp->trace);
+ if (ret) {
+ BT_LOGE_STR("Cannot make trace static.");
+ goto error;
+ }
+
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ bt_put(field);
+ bt_put(ft);
+ return ret;
+}
+
+static
+int try_create_meta_stream_packet(struct dmesg_component *dmesg_comp,
+ bool has_ts)
+{
+ int ret = 0;
+
+ if (dmesg_comp->trace) {
+ /* Already created */
+ goto end;
+ }
+
+ ret = create_meta(dmesg_comp, has_ts);
+ if (ret) {
+ BT_LOGE("Cannot create metadata objects: dmesg-comp-addr=%p",
+ dmesg_comp);
+ goto error;
+ }
+
+ ret = create_packet_and_stream(dmesg_comp);
+ if (ret) {
+ BT_LOGE("Cannot create packet and stream objects: "
+ "dmesg-comp-addr=%p", dmesg_comp);
+ goto error;
+ }
+
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ return ret;
+}
static
void destroy_dmesg_component(struct dmesg_component *dmesg_comp)
}
bt_put(dmesg_comp->packet);
+ bt_put(dmesg_comp->trace);
+ bt_put(dmesg_comp->stream_class);
bt_put(dmesg_comp->event_class);
bt_put(dmesg_comp->stream);
+ bt_put(dmesg_comp->clock_class);
bt_put(dmesg_comp->cc_prio_map);
g_free(dmesg_comp);
}
+static
+enum bt_component_status create_port(struct bt_private_component *priv_comp)
+{
+ return bt_private_component_source_add_output_private_port(priv_comp,
+ "out", NULL, NULL);
+}
+
BT_HIDDEN
enum bt_component_status dmesg_init(struct bt_private_component *priv_comp,
struct bt_value *params, void *init_method_data)
enum bt_component_status status = BT_COMPONENT_STATUS_OK;
if (!dmesg_comp) {
+ BT_LOGE_STR("Failed to allocate one dmesg component structure.");
goto error;
}
dmesg_comp->params.path = g_string_new(NULL);
if (!dmesg_comp->params.path) {
+ BT_LOGE_STR("Failed to allocate a GString.");
goto error;
}
- ret = check_params(dmesg_comp, params);
+ ret = handle_params(dmesg_comp, params);
if (ret) {
+ BT_LOGE("Invalid parameters: comp-addr=%p", priv_comp);
goto error;
}
+ if (!dmesg_comp->params.read_from_stdin &&
+ !g_file_test(dmesg_comp->params.path->str,
+ G_FILE_TEST_IS_REGULAR)) {
+ BT_LOGE("Input path is not a regular file: "
+ "comp-addr=%p, path=\"%s\"", priv_comp,
+ dmesg_comp->params.path->str);
+ goto error;
+ }
+ status = create_port(priv_comp);
+ if (status != BT_COMPONENT_STATUS_OK) {
+ goto error;
+ }
+ (void) bt_private_component_set_user_data(priv_comp, dmesg_comp);
goto end;
error:
destroy_dmesg_component(dmesg_comp);
- status = BT_COMPONENT_STATUS_ERROR;
+ (void) bt_private_component_set_user_data(priv_comp, NULL);
+
+ if (status >= 0) {
+ status = BT_COMPONENT_STATUS_ERROR;
+ }
end:
return status;
BT_HIDDEN
void dmesg_finalize(struct bt_private_component *priv_comp)
{
+ void *data = bt_private_component_get_user_data(priv_comp);
+
+ destroy_dmesg_component(data);
+}
+
+static
+int create_event_header_from_line(
+ struct dmesg_component *dmesg_comp,
+ const char *line, const char **new_start,
+ struct bt_ctf_field **user_field,
+ struct bt_ctf_clock_value **user_clock_value)
+{
+ bool has_timestamp = false;
+ unsigned long sec, usec, msec;
+ unsigned int year, mon, mday, hour, min;
+ uint64_t ts = 0;
+ struct bt_ctf_clock_value *clock_value = NULL;
+ struct bt_ctf_field_type *ft = NULL;
+ struct bt_ctf_field *eh_field = NULL;
+ struct bt_ctf_field *ts_field = NULL;
+ int ret = 0;
+
+ assert(user_clock_value);
+ assert(user_field);
+ *new_start = line;
+
+ /* Extract time from input line */
+ if (sscanf(line, "[%lu.%lu] ", &sec, &usec) == 2) {
+ ts = (uint64_t) sec * USEC_PER_SEC + (uint64_t) usec;
+
+ /*
+ * The clock class we use has a 1 GHz frequency: convert
+ * from µs to ns.
+ */
+ ts *= NSEC_PER_USEC;
+ has_timestamp = true;
+ } 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 = true;
+ }
+
+ if (has_timestamp) {
+ /* Set new start for the message portion of the line */
+ *new_start = strchr(line, ']');
+ assert(*new_start);
+ (*new_start)++;
+
+ if ((*new_start)[0] == ' ') {
+ (*new_start)++;
+ }
+ }
+
+ /*
+ * At this point, we know if the stream class's event header
+ * field type should have a timestamp or not, so we can lazily
+ * create the metadata, stream, and packet objects.
+ */
+ ret = try_create_meta_stream_packet(dmesg_comp, has_timestamp);
+ if (ret) {
+ /* try_create_meta_stream_packet() logs errors */
+ goto error;
+ }
+
+ if (dmesg_comp->clock_class) {
+ clock_value = bt_ctf_clock_value_create(dmesg_comp->clock_class,
+ ts);
+ if (!clock_value) {
+ BT_LOGE_STR("Cannot create clock value object.");
+ goto error;
+ }
+
+ ft = bt_ctf_stream_class_get_event_header_type(
+ dmesg_comp->stream_class);
+ assert(ft);
+ eh_field = bt_ctf_field_create(ft);
+ if (!eh_field) {
+ BT_LOGE_STR("Cannot create event header field object.");
+ goto error;
+ }
+
+ ts_field = bt_ctf_field_structure_get_field_by_name(eh_field,
+ "timestamp");
+ if (!ts_field) {
+ BT_LOGE_STR("Cannot get `timestamp` field from structure field.");
+ goto error;
+ }
+
+ ret = bt_ctf_field_unsigned_integer_set_value(ts_field, ts);
+ if (ret) {
+ BT_LOGE_STR("Cannot set integer field's value.");
+ goto error;
+ }
+
+ *user_clock_value = clock_value;
+ clock_value = NULL;
+ *user_field = eh_field;
+ eh_field = NULL;
+ }
+
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ bt_put(ft);
+ bt_put(ts_field);
+ bt_put(clock_value);
+ bt_put(eh_field);
+ return ret;
+}
+
+static
+int create_event_payload_from_line(
+ struct dmesg_component *dmesg_comp,
+ const char *line, struct bt_ctf_field **user_field)
+{
+ struct bt_ctf_field_type *ft = NULL;
+ struct bt_ctf_field *ep_field = NULL;
+ struct bt_ctf_field *str_field = NULL;
+ size_t len;
+ int ret;
+
+ assert(user_field);
+ ft = bt_ctf_event_class_get_payload_type(dmesg_comp->event_class);
+ assert(ft);
+ ep_field = bt_ctf_field_create(ft);
+ if (!ep_field) {
+ BT_LOGE_STR("Cannot create event payload field object.");
+ goto error;
+ }
+
+ str_field = bt_ctf_field_structure_get_field_by_name(ep_field, "str");
+ if (!str_field) {
+ BT_LOGE_STR("Cannot get `timestamp` field from structure field.");
+ goto error;
+ }
+
+ len = strlen(line);
+ if (line[len - 1] == '\n') {
+ /* Do not include the newline character in the payload */
+ len--;
+ }
+
+ ret = bt_ctf_field_string_append_len(str_field, line, len);
+ if (ret) {
+ BT_LOGE("Cannot append value to string field object: "
+ "len=%zu", len);
+ goto error;
+ }
+
+ *user_field = ep_field;
+ ep_field = NULL;
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ bt_put(ft);
+ bt_put(ep_field);
+ bt_put(str_field);
+ return ret;
+}
+
+static
+struct bt_notification *create_notif_from_line(
+ struct dmesg_component *dmesg_comp, const char *line)
+{
+ struct bt_ctf_field *eh_field = NULL;
+ struct bt_ctf_field *ep_field = NULL;
+ struct bt_ctf_clock_value *clock_value = NULL;
+ struct bt_ctf_event *event = NULL;
+ struct bt_notification *notif = NULL;
+ const char *new_start;
+ int ret;
+
+ ret = create_event_header_from_line(dmesg_comp, line, &new_start,
+ &eh_field, &clock_value);
+ if (ret) {
+ BT_LOGE("Cannot create event header field from line: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ ret = create_event_payload_from_line(dmesg_comp, new_start,
+ &ep_field);
+ if (ret) {
+ BT_LOGE("Cannot create event payload field from line: "
+ "ret=%d", ret);
+ goto error;
+ }
+
+ assert(ep_field);
+ event = bt_ctf_event_create(dmesg_comp->event_class);
+ if (!event) {
+ BT_LOGE_STR("Cannot create event object.");
+ goto error;
+ }
+
+ ret = bt_ctf_event_set_packet(event, dmesg_comp->packet);
+ if (ret) {
+ BT_LOGE_STR("Cannot set event's packet.");
+ goto error;
+ }
+
+ if (eh_field) {
+ ret = bt_ctf_event_set_header(event, eh_field);
+ if (ret) {
+ BT_LOGE_STR("Cannot set event's header field.");
+ goto error;
+ }
+ }
+
+ ret = bt_ctf_event_set_event_payload(event, ep_field);
+ if (ret) {
+ BT_LOGE_STR("Cannot set event's payload field.");
+ goto error;
+ }
+
+ if (clock_value) {
+ ret = bt_ctf_event_set_clock_value(event, clock_value);
+ if (ret) {
+ BT_LOGE_STR("Cannot set event's clock value.");
+ goto error;
+ }
+ }
+
+ notif = bt_notification_event_create(event, dmesg_comp->cc_prio_map);
+ if (!notif) {
+ BT_LOGE_STR("Cannot create event notification.");
+ goto error;
+ }
+
+ goto end;
+
+error:
+ BT_PUT(notif);
+
+end:
+ bt_put(eh_field);
+ bt_put(ep_field);
+ bt_put(clock_value);
+ bt_put(event);
+ return notif;
+}
+
+static
+void destroy_dmesg_notif_iter(struct dmesg_notif_iter *dmesg_notif_iter)
+{
+ if (!dmesg_notif_iter) {
+ return;
+ }
+
+ if (dmesg_notif_iter->fp && dmesg_notif_iter->fp != stdin) {
+ if (fclose(dmesg_notif_iter->fp)) {
+ BT_LOGE_ERRNO("Cannot close input file", ".");
+ }
+ }
+ free(dmesg_notif_iter->linebuf);
+ g_free(dmesg_notif_iter);
}
BT_HIDDEN
struct bt_private_notification_iterator *priv_notif_iter,
struct bt_private_port *priv_port)
{
+ struct bt_private_component *priv_comp = NULL;
+ struct dmesg_component *dmesg_comp;
+ struct dmesg_notif_iter *dmesg_notif_iter =
+ g_new0(struct dmesg_notif_iter, 1);
+ enum bt_notification_iterator_status status =
+ BT_NOTIFICATION_ITERATOR_STATUS_OK;
+
+ if (!dmesg_notif_iter) {
+ BT_LOGE_STR("Failed to allocate on dmesg notification iterator structure.");
+ goto error;
+ }
+
+ priv_comp = bt_private_notification_iterator_get_private_component(
+ priv_notif_iter);
+ assert(priv_comp);
+ dmesg_comp = bt_private_component_get_user_data(priv_comp);
+ assert(dmesg_comp);
+ dmesg_notif_iter->dmesg_comp = dmesg_comp;
+ if (dmesg_comp->params.read_from_stdin) {
+ dmesg_notif_iter->fp = stdin;
+ } else {
+ dmesg_notif_iter->fp = fopen(dmesg_comp->params.path->str, "r");
+ if (!dmesg_notif_iter->fp) {
+ BT_LOGE_ERRNO("Cannot open input file in read mode", ": path=\"%s\"",
+ dmesg_comp->params.path->str);
+ goto error;
+ }
+ }
+
+ (void) bt_private_notification_iterator_set_user_data(priv_notif_iter,
+ dmesg_notif_iter);
+ goto end;
+
+error:
+ destroy_dmesg_notif_iter(dmesg_notif_iter);
+ (void) bt_private_notification_iterator_set_user_data(priv_notif_iter,
+ NULL);
+ if (status >= 0) {
+ status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
+ }
+
+end:
+ bt_put(priv_comp);
+ return status;
}
BT_HIDDEN
-void dmesg_iterator_finalize(
+void dmesg_notif_iter_finalize(
struct bt_private_notification_iterator *priv_notif_iter)
{
-
+ destroy_dmesg_notif_iter(bt_private_notification_iterator_get_user_data(
+ priv_notif_iter));
}
BT_HIDDEN
struct bt_notification_iterator_next_return dmesg_notif_iter_next(
struct bt_private_notification_iterator *priv_notif_iter)
{
+ ssize_t len;
+ struct dmesg_notif_iter *dmesg_notif_iter =
+ bt_private_notification_iterator_get_user_data(
+ priv_notif_iter);
+ struct dmesg_component *dmesg_comp;
+ struct bt_notification_iterator_next_return next_ret = {
+ .status = BT_NOTIFICATION_ITERATOR_STATUS_OK,
+ .notification = NULL
+ };
+ assert(dmesg_notif_iter);
+ dmesg_comp = dmesg_notif_iter->dmesg_comp;
+ assert(dmesg_comp);
+
+ while (true) {
+ const char *ch;
+ bool only_spaces = true;
+
+ len = bt_getline(&dmesg_notif_iter->linebuf,
+ &dmesg_notif_iter->linebuf_len, dmesg_notif_iter->fp);
+ if (len < 0) {
+ if (errno == EINVAL) {
+ next_ret.status =
+ BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
+ } else if (errno == ENOMEM) {
+ next_ret.status =
+ BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+ } else {
+ next_ret.status =
+ BT_NOTIFICATION_ITERATOR_STATUS_END;
+ }
+
+ goto end;
+ }
+
+ assert(dmesg_notif_iter->linebuf);
+
+ /* Ignore empty lines, once trimmed */
+ for (ch = dmesg_notif_iter->linebuf; *ch != '\0'; ch++) {
+ if (!isspace(*ch)) {
+ only_spaces = false;
+ break;
+ }
+ }
+
+ if (!only_spaces) {
+ break;
+ }
+ }
+
+ next_ret.notification = create_notif_from_line(dmesg_comp,
+ dmesg_notif_iter->linebuf);
+ if (!next_ret.notification) {
+ BT_LOGE("Cannot create event notification from line: "
+ "dmesg-comp-addr=%p, line=\"%s\"", dmesg_comp,
+ dmesg_notif_iter->linebuf);
+ }
+
+end:
+ return next_ret;
}
projects / babeltrace.git / commitdiff
