#include <lttng/ust-abi.h>
#include <lttng/ust-events.h>
#include <sys/mman.h>
+#include <byteswap.h>
#include <usterr-signal-safe.h>
#include <ust-comm.h>
}
}
break;
+ case LTTNG_UST_OBJECT_TYPE_EVENT:
+ case LTTNG_UST_OBJECT_TYPE_CONTEXT:
+ break;
default:
assert(0);
}
event_data = zmalloc(sizeof(*event_data));
if (!event_data)
return -ENOMEM;
+ event_data->type = LTTNG_UST_OBJECT_TYPE_EVENT;
memset(&lum, 0, sizeof(lum));
lum.handle = channel_data->handle;
lum.cmd = LTTNG_UST_EVENT;
context_data = zmalloc(sizeof(*context_data));
if (!context_data)
return -ENOMEM;
+ context_data->type = LTTNG_UST_OBJECT_TYPE_CONTEXT;
memset(&lum, 0, sizeof(lum));
lum.handle = obj_data->handle;
lum.cmd = LTTNG_UST_CONTEXT;
free(context_data);
return ret;
}
- context_data->handle = lur.ret_val;
- DBG("received context handle %u", context_data->handle);
+ context_data->handle = -1;
+ DBG("Context created successfully");
*_context_data = context_data;
return ret;
}
transport = lttng_transport_find(transport_name);
if (!transport) {
DBG("LTTng transport %s not found\n",
- transport_name);
+ transport_name);
return NULL;
}
return NULL;
chan->chan = transport->ops.channel_create(transport_name, NULL,
- attr->subbuf_size, attr->num_subbuf,
+ attr->subbuf_size, attr->num_subbuf,
attr->switch_timer_interval,
- attr->read_timer_interval,
+ attr->read_timer_interval,
attr->uuid);
if (!chan->chan) {
goto chan_error;
if (chan->backend.config.output != RING_BUFFER_MMAP)
return -EINVAL;
sb_bindex = subbuffer_id_get_index(&chan->backend.config,
- buf->backend.buf_rsb.id);
+ buf->backend.buf_rsb.id);
*off = shmp(consumer_chan->chan->handle,
shmp_index(consumer_chan->chan->handle, buf->backend.array, sb_bindex)->shmp)->mmap_offset;
return 0;
consumer_chan->chan->handle);
}
+/*
+ * Returns 0 on success, negative error value on error.
+ */
+int ustctl_recv_reg_msg(int sock,
+ enum ustctl_socket_type *type,
+ uint32_t *major,
+ uint32_t *minor,
+ uint32_t *pid,
+ uint32_t *ppid,
+ uint32_t *uid,
+ uint32_t *gid,
+ uint32_t *bits_per_long,
+ uint32_t *uint8_t_alignment,
+ uint32_t *uint16_t_alignment,
+ uint32_t *uint32_t_alignment,
+ uint32_t *uint64_t_alignment,
+ uint32_t *long_alignment,
+ int *byte_order,
+ char *name)
+{
+ ssize_t len;
+ struct ustctl_reg_msg reg_msg;
+
+ len = ustcomm_recv_unix_sock(sock, ®_msg, sizeof(reg_msg));
+ if (len > 0 && len != sizeof(reg_msg))
+ return -EIO;
+ if (len == 0)
+ return -EPIPE;
+ if (len < 0)
+ return len;
+
+ if (reg_msg.magic == LTTNG_UST_COMM_MAGIC) {
+ *byte_order = BYTE_ORDER == BIG_ENDIAN ?
+ BIG_ENDIAN : LITTLE_ENDIAN;
+ } else if (reg_msg.magic == bswap_32(LTTNG_UST_COMM_MAGIC)) {
+ *byte_order = BYTE_ORDER == BIG_ENDIAN ?
+ LITTLE_ENDIAN : BIG_ENDIAN;
+ } else {
+ return -LTTNG_UST_ERR_INVAL_MAGIC;
+ }
+ switch (reg_msg.socket_type) {
+ case 0: *type = USTCTL_SOCKET_CMD;
+ break;
+ case 1: *type = USTCTL_SOCKET_NOTIFY;
+ break;
+ default:
+ return -LTTNG_UST_ERR_INVAL_SOCKET_TYPE;
+ }
+ *major = reg_msg.major;
+ *minor = reg_msg.minor;
+ *pid = reg_msg.pid;
+ *ppid = reg_msg.ppid;
+ *uid = reg_msg.uid;
+ *gid = reg_msg.gid;
+ *bits_per_long = reg_msg.bits_per_long;
+ *uint8_t_alignment = reg_msg.uint8_t_alignment;
+ *uint16_t_alignment = reg_msg.uint16_t_alignment;
+ *uint32_t_alignment = reg_msg.uint32_t_alignment;
+ *uint64_t_alignment = reg_msg.uint64_t_alignment;
+ *long_alignment = reg_msg.long_alignment;
+ memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN);
+ if (reg_msg.major != LTTNG_UST_ABI_MAJOR_VERSION) {
+ return -LTTNG_UST_ERR_UNSUP_MAJOR;
+ }
+
+ return 0;
+}
+
+int ustctl_recv_notify(int sock, enum ustctl_notify_cmd *notify_cmd)
+{
+ struct ustcomm_notify_hdr header;
+ ssize_t len;
+
+ len = ustcomm_recv_unix_sock(sock, &header, sizeof(header));
+ if (len > 0 && len != sizeof(header))
+ return -EIO;
+ if (len == 0)
+ return -EPIPE;
+ if (len < 0)
+ return len;
+ switch (header.notify_cmd) {
+ case 0:
+ *notify_cmd = USTCTL_NOTIFY_CMD_EVENT;
+ break;
+ case 1:
+ *notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * Returns 0 on success, negative error value on error.
+ */
+int ustctl_recv_register_event(int sock,
+ int *session_objd,
+ int *channel_objd,
+ char *event_name,
+ int *loglevel,
+ char **signature,
+ size_t *nr_fields,
+ struct ustctl_field **fields,
+ char **model_emf_uri)
+{
+ ssize_t len;
+ struct ustcomm_notify_event_msg msg;
+ size_t signature_len, fields_len, model_emf_uri_len;
+ char *a_sign = NULL, *a_model_emf_uri = NULL;
+ struct ustctl_field *a_fields = NULL;
+
+ len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg));
+ if (len > 0 && len != sizeof(msg))
+ return -EIO;
+ if (len == 0)
+ return -EPIPE;
+ if (len < 0)
+ return len;
+
+ *session_objd = msg.session_objd;
+ *channel_objd = msg.channel_objd;
+ strncpy(event_name, msg.event_name, LTTNG_UST_SYM_NAME_LEN);
+ event_name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ *loglevel = msg.loglevel;
+ signature_len = msg.signature_len;
+ fields_len = msg.fields_len;
+
+ if (fields_len % sizeof(*a_fields) != 0) {
+ return -EINVAL;
+ }
+
+ model_emf_uri_len = msg.model_emf_uri_len;
+
+ /* recv signature. contains at least \0. */
+ a_sign = zmalloc(signature_len);
+ if (!a_sign)
+ return -ENOMEM;
+ len = ustcomm_recv_unix_sock(sock, a_sign, signature_len);
+ if (len > 0 && len != signature_len) {
+ len = -EIO;
+ goto signature_error;
+ }
+ if (len == 0) {
+ len = -EPIPE;
+ goto signature_error;
+ }
+ if (len < 0) {
+ goto signature_error;
+ }
+ /* Enforce end of string */
+ signature[signature_len - 1] = '\0';
+
+ /* recv fields */
+ if (fields_len) {
+ a_fields = zmalloc(fields_len);
+ if (!a_fields) {
+ len = -ENOMEM;
+ goto signature_error;
+ }
+ len = ustcomm_recv_unix_sock(sock, a_fields, fields_len);
+ if (len > 0 && len != fields_len) {
+ len = -EIO;
+ goto fields_error;
+ }
+ if (len == 0) {
+ len = -EPIPE;
+ goto fields_error;
+ }
+ if (len < 0) {
+ goto fields_error;
+ }
+ }
+
+ if (model_emf_uri_len) {
+ /* recv model_emf_uri_len */
+ a_model_emf_uri = zmalloc(model_emf_uri_len);
+ if (!a_model_emf_uri) {
+ len = -ENOMEM;
+ goto fields_error;
+ }
+ len = ustcomm_recv_unix_sock(sock, a_model_emf_uri,
+ model_emf_uri_len);
+ if (len > 0 && len != model_emf_uri_len) {
+ len = -EIO;
+ goto model_error;
+ }
+ if (len == 0) {
+ len = -EPIPE;
+ goto model_error;
+ }
+ if (len < 0) {
+ goto model_error;
+ }
+ /* Enforce end of string */
+ a_model_emf_uri[model_emf_uri_len - 1] = '\0';
+ }
+
+ *signature = a_sign;
+ *nr_fields = fields_len / sizeof(*a_fields);
+ *fields = a_fields;
+ *model_emf_uri = a_model_emf_uri;
+
+ return 0;
+
+model_error:
+ free(a_model_emf_uri);
+fields_error:
+ free(a_fields);
+signature_error:
+ free(a_sign);
+ return len;
+}
+
+/*
+ * Returns 0 on success, negative error value on error.
+ */
+int ustctl_reply_register_event(int sock,
+ uint32_t id,
+ int ret_code)
+{
+ ssize_t len;
+ struct {
+ struct ustcomm_notify_hdr header;
+ struct ustcomm_notify_event_reply r;
+ } reply;
+
+ memset(&reply, 0, sizeof(reply));
+ reply.header.notify_cmd = USTCTL_NOTIFY_CMD_EVENT;
+ reply.r.ret_code = ret_code;
+ reply.r.event_id = id;
+ len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply));
+ if (len > 0 && len != sizeof(reply))
+ return -EIO;
+ if (len < 0)
+ return len;
+ return 0;
+}
+
+/*
+ * Returns 0 on success, negative UST or system error value on error.
+ */
+int ustctl_recv_register_channel(int sock,
+ int *session_objd, /* session descriptor (output) */
+ int *channel_objd, /* channel descriptor (output) */
+ size_t *nr_fields,
+ struct ustctl_field **fields)
+{
+ ssize_t len;
+ struct ustcomm_notify_channel_msg msg;
+ size_t fields_len;
+ struct ustctl_field *a_fields;
+
+ len = ustcomm_recv_unix_sock(sock, &msg, sizeof(msg));
+ if (len > 0 && len != sizeof(msg))
+ return -EIO;
+ if (len == 0)
+ return -EPIPE;
+ if (len < 0)
+ return len;
+
+ *session_objd = msg.session_objd;
+ *channel_objd = msg.channel_objd;
+ fields_len = msg.ctx_fields_len;
+
+ if (fields_len % sizeof(*a_fields) != 0) {
+ return -EINVAL;
+ }
+
+ /* recv fields */
+ if (fields_len) {
+ a_fields = zmalloc(fields_len);
+ if (!a_fields) {
+ len = -ENOMEM;
+ goto alloc_error;
+ }
+ len = ustcomm_recv_unix_sock(sock, a_fields, fields_len);
+ if (len > 0 && len != fields_len) {
+ len = -EIO;
+ goto fields_error;
+ }
+ if (len == 0) {
+ len = -EPIPE;
+ goto fields_error;
+ }
+ if (len < 0) {
+ goto fields_error;
+ }
+ *fields = a_fields;
+ } else {
+ *fields = NULL;
+ }
+ *nr_fields = fields_len / sizeof(*a_fields);
+ return 0;
+
+fields_error:
+ free(a_fields);
+alloc_error:
+ return len;
+}
+
+/*
+ * Returns 0 on success, negative error value on error.
+ */
+int ustctl_reply_register_channel(int sock,
+ uint32_t chan_id,
+ enum ustctl_channel_header header_type,
+ int ret_code)
+{
+ ssize_t len;
+ struct {
+ struct ustcomm_notify_hdr header;
+ struct ustcomm_notify_channel_reply r;
+ } reply;
+
+ memset(&reply, 0, sizeof(reply));
+ reply.header.notify_cmd = USTCTL_NOTIFY_CMD_CHANNEL;
+ reply.r.ret_code = ret_code;
+ reply.r.chan_id = chan_id;
+ switch (header_type) {
+ case USTCTL_CHANNEL_HEADER_COMPACT:
+ reply.r.header_type = 1;
+ break;
+ case USTCTL_CHANNEL_HEADER_LARGE:
+ reply.r.header_type = 2;
+ break;
+ default:
+ reply.r.header_type = 0;
+ break;
+ }
+ len = ustcomm_send_unix_sock(sock, &reply, sizeof(reply));
+ if (len > 0 && len != sizeof(reply))
+ return -EIO;
+ if (len < 0)
+ return len;
+ return 0;
+}
+
static __attribute__((constructor))
void ustctl_init(void)
{
projects / lttng-ust.git / blobdiff