X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Flttng-ctl.cpp;h=c5d47ebdc53d66b2182a6656b2ecb955fdf91942;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hp=1743e7546c1071713aff10d9f10c73ad30ee955a;hpb=13dd7782d52be2dac47be5116c00d3a2ba0ad626;p=lttng-tools.git diff --git a/src/lib/lttng-ctl/lttng-ctl.cpp b/src/lib/lttng-ctl/lttng-ctl.cpp index 1743e7546..c5d47ebdc 100644 --- a/src/lib/lttng-ctl/lttng-ctl.cpp +++ b/src/lib/lttng-ctl/lttng-ctl.cpp @@ -18,38 +18,38 @@ #include #include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include #include -#include -#include -#include +#include +#include +#include #include #include -#include -#include -#include -#include +#include +#include +#include +#include -#include "lttng-ctl-helper.h" -#include +#include "lttng-ctl-helper.hpp" +#include #include -#include +#include #define COPY_DOMAIN_PACKED(dst, src) \ do { \ @@ -911,13 +911,21 @@ int lttng_stop_tracing_no_wait(const char *session_name) * Returns the size of the returned payload data or a negative error code. */ int lttng_add_context(struct lttng_handle *handle, - struct lttng_event_context *ctx, const char *event_name, + struct lttng_event_context *ctx, + const char *event_name __attribute__((unused)), const char *channel_name) { int ret; - size_t len = 0; - char *buf = NULL; - struct lttcomm_session_msg lsm; + struct lttcomm_session_msg lsm = { + .cmd_type = LTTNG_ADD_CONTEXT, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, + }; + struct lttng_payload payload; + + lttng_payload_init(&payload); /* Safety check. Both are mandatory. */ if (handle == NULL || ctx == NULL) { @@ -925,8 +933,11 @@ int lttng_add_context(struct lttng_handle *handle, goto end; } - memset(&lsm, 0, sizeof(lsm)); - lsm.cmd_type = LTTNG_ADD_CONTEXT; + ret = lttng_dynamic_buffer_set_size(&payload.buffer, sizeof(lsm)); + if (ret) { + ret = -LTTNG_ERR_NOMEM; + goto end; + } /* If no channel name, send empty string. */ ret = lttng_strncpy(lsm.u.context.channel_name, channel_name ?: "", @@ -944,55 +955,33 @@ int lttng_add_context(struct lttng_handle *handle, goto end; } - if (ctx->ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { - size_t provider_len, ctx_len; - const char *provider_name = ctx->u.app_ctx.provider_name; - const char *ctx_name = ctx->u.app_ctx.ctx_name; + ret = lttng_event_context_serialize(ctx, &payload); + if (ret) { + ret = -LTTNG_ERR_INVALID; + goto end; + } - if (!provider_name || !ctx_name) { - ret = -LTTNG_ERR_INVALID; - goto end; - } + lsm.u.context.length = payload.buffer.size - sizeof(lsm); - provider_len = strlen(provider_name); - if (provider_len == 0) { - ret = -LTTNG_ERR_INVALID; - goto end; - } - lsm.u.context.provider_name_len = provider_len; + /* Update message header. */ + memcpy(payload.buffer.data, &lsm, sizeof(lsm)); - ctx_len = strlen(ctx_name); - if (ctx_len == 0) { - ret = -LTTNG_ERR_INVALID; - goto end; - } - lsm.u.context.context_name_len = ctx_len; + { + struct lttng_payload reply; + struct lttng_payload_view payload_view = + lttng_payload_view_from_payload(&payload, 0, + -1); - len = provider_len + ctx_len; - buf = (char *) zmalloc(len); - if (!buf) { - ret = -LTTNG_ERR_NOMEM; + lttng_payload_init(&reply); + ret = lttng_ctl_ask_sessiond_payload(&payload_view, &reply); + lttng_payload_reset(&reply); + if (ret) { goto end; } - - memcpy(buf, provider_name, provider_len); - memcpy(buf + provider_len, ctx_name, ctx_len); - } - memcpy(&lsm.u.context.ctx, ctx, sizeof(struct lttng_event_context)); - - if (ctx->ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) { - /* - * Don't leak application addresses to the sessiond. - * This is only necessary when ctx is for an app ctx otherwise - * the values inside the union (type & config) are overwritten. - */ - lsm.u.context.ctx.u.app_ctx.provider_name = NULL; - lsm.u.context.ctx.u.app_ctx.ctx_name = NULL; } - ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(&lsm, buf, len, NULL); end: - free(buf); + lttng_payload_reset(&payload); return ret; } @@ -1101,11 +1090,18 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, const char *original_filter_expression, int exclusion_count, char **exclusion_list) { - struct lttcomm_session_msg lsm; + struct lttcomm_session_msg lsm = { + .cmd_type = LTTNG_ENABLE_EVENT, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, + }; struct lttng_payload payload; - int ret = 0, i; + int ret = 0; unsigned int free_filter_expression = 0; struct filter_parser_ctx *ctx = NULL; + size_t bytecode_len = 0; /* * We have either a filter or some exclusions, so we need to set up @@ -1135,36 +1131,12 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, goto error; } - memset(&lsm, 0, sizeof(lsm)); - - /* If no channel name, send empty string. */ - ret = lttng_strncpy(lsm.u.enable.channel_name, channel_name ?: "", - sizeof(lsm.u.enable.channel_name)); - if (ret) { - ret = -LTTNG_ERR_INVALID; - goto error; - } - - lsm.cmd_type = LTTNG_ENABLE_EVENT; if (ev->name[0] == '\0') { /* Enable all events. */ ret = lttng_strncpy(ev->name, "*", sizeof(ev->name)); LTTNG_ASSERT(ret == 0); } - COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - memcpy(&lsm.u.enable.event, ev, sizeof(lsm.u.enable.event)); - - ret = lttng_strncpy(lsm.session.name, handle->session_name, - sizeof(lsm.session.name)); - if (ret) { - ret = -LTTNG_ERR_INVALID; - goto error; - } - - lsm.u.enable.exclusion_count = exclusion_count; - lsm.u.enable.bytecode_len = 0; - /* Parse filter expression. */ if (filter_expression != NULL || handle->domain.type == LTTNG_DOMAIN_JUL || handle->domain.type == LTTNG_DOMAIN_LOG4J @@ -1174,7 +1146,7 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, handle->domain.type == LTTNG_DOMAIN_PYTHON) { char *agent_filter; - /* Setup JUL filter if needed. */ + /* Setup agent filter if needed. */ agent_filter = set_agent_filter(filter_expression, ev); if (!agent_filter) { if (!filter_expression) { @@ -1182,7 +1154,7 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, * No JUL and no filter, just skip * everything below. */ - goto ask_sessiond; + goto serialize; } } else { /* @@ -1195,95 +1167,57 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, } } + if (strnlen(filter_expression, LTTNG_FILTER_MAX_LEN) == + LTTNG_FILTER_MAX_LEN) { + ret = -LTTNG_ERR_FILTER_INVAL; + goto error; + } + ret = filter_parser_ctx_create_from_filter_expression(filter_expression, &ctx); if (ret) { - goto filter_error; + goto error; } - lsm.u.enable.bytecode_len = sizeof(ctx->bytecode->b) - + bytecode_get_len(&ctx->bytecode->b); - lsm.u.enable.expression_len = strlen(filter_expression) + 1; + bytecode_len = bytecode_get_len(&ctx->bytecode->b) + + sizeof(ctx->bytecode->b); + if (bytecode_len > LTTNG_FILTER_MAX_LEN) { + ret = -LTTNG_ERR_FILTER_INVAL; + goto error; + } } - ret = lttng_dynamic_buffer_set_capacity(&payload.buffer, - lsm.u.enable.bytecode_len + - lsm.u.enable.expression_len + - LTTNG_SYMBOL_NAME_LEN * - exclusion_count); +serialize: + ret = lttng_event_serialize(ev, exclusion_count, exclusion_list, + filter_expression, bytecode_len, + (ctx && bytecode_len) ? &ctx->bytecode->b : NULL, + &payload); if (ret) { - ret = -LTTNG_ERR_EXCLUSION_NOMEM; - goto mem_error; + ret = -LTTNG_ERR_INVALID; + goto error; } - /* Put exclusion names first in the data. */ - for (i = 0; i < exclusion_count; i++) { - size_t exclusion_len; - - exclusion_len = lttng_strnlen(exclusion_list[i], - LTTNG_SYMBOL_NAME_LEN); - if (exclusion_len == LTTNG_SYMBOL_NAME_LEN) { - /* Exclusion is not NULL-terminated. */ - ret = -LTTNG_ERR_INVALID; - goto mem_error; - } - - ret = lttng_dynamic_buffer_append(&payload.buffer, - exclusion_list[i], exclusion_len); - if (ret) { - goto mem_error; - } - - /* - * Padding the rest of the entry with zeros. Every exclusion - * entries take LTTNG_SYMBOL_NAME_LEN bytes in the buffer. - */ - ret = lttng_dynamic_buffer_set_size(&payload.buffer, - LTTNG_SYMBOL_NAME_LEN * (i + 1)); - if (ret) { - goto mem_error; - } + /* If no channel name, send empty string. */ + ret = lttng_strncpy(lsm.u.enable.channel_name, channel_name ?: "", + sizeof(lsm.u.enable.channel_name)); + if (ret) { + ret = -LTTNG_ERR_INVALID; + goto error; } - /* Add filter expression next. */ - if (filter_expression) { - ret = lttng_dynamic_buffer_append(&payload.buffer, - filter_expression, lsm.u.enable.expression_len); - if (ret) { - goto mem_error; - } - } - /* Add filter bytecode next. */ - if (ctx && lsm.u.enable.bytecode_len != 0) { - ret = lttng_dynamic_buffer_append(&payload.buffer, - &ctx->bytecode->b, lsm.u.enable.bytecode_len); - if (ret) { - goto mem_error; - } - } - if (ev->extended.ptr) { - struct lttng_event_extended *ev_ext = - (struct lttng_event_extended *) ev->extended.ptr; - - if (ev_ext->probe_location) { - /* - * lttng_userspace_probe_location_serialize returns the - * number of bytes that was appended to the buffer. - */ - ret = lttng_userspace_probe_location_serialize( - ev_ext->probe_location, &payload); - if (ret < 0) { - goto mem_error; - } + /* Domain */ + COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - /* - * Set the size of the userspace probe location element - * of the buffer so that the receiving side knows where - * to split it. - */ - lsm.u.enable.userspace_probe_location_len = ret; - } + /* Session name */ + ret = lttng_strncpy(lsm.session.name, handle->session_name, + sizeof(lsm.session.name)); + if (ret) { + ret = -LTTNG_ERR_INVALID; + goto error; } + /* Length of the serialized event. */ + lsm.u.enable.length = (uint32_t) payload.buffer.size; + { struct lttng_payload_view view = lttng_payload_view_from_payload( &payload, 0, -1); @@ -1291,7 +1225,7 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, int fd_to_send; if (fd_count < 0) { - goto mem_error; + goto error; } LTTNG_ASSERT(fd_count == 0 || fd_count == 1); @@ -1300,26 +1234,27 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle, lttng_payload_view_pop_fd_handle(&view); if (!h) { - goto mem_error; + goto error; } fd_to_send = fd_handle_get_fd(h); fd_handle_put(h); } + lsm.fd_count = fd_count; + ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, fd_count ? &fd_to_send : NULL, fd_count, view.buffer.size ? view.buffer.data : NULL, view.buffer.size, NULL, NULL, 0); } -mem_error: +error: if (filter_expression && ctx) { filter_bytecode_free(ctx); filter_ir_free(ctx); filter_parser_ctx_free(ctx); } -filter_error: if (free_filter_expression) { /* * The filter expression has been replaced and must be freed as @@ -1328,28 +1263,37 @@ filter_error: */ free(filter_expression); } -error: /* * Return directly to the caller and don't ask the sessiond since * something went wrong in the parsing of data above. */ lttng_payload_reset(&payload); return ret; - -ask_sessiond: - ret = lttng_ctl_ask_sessiond(&lsm, NULL); - return ret; } int lttng_disable_event_ext(struct lttng_handle *handle, struct lttng_event *ev, const char *channel_name, const char *original_filter_expression) { - struct lttcomm_session_msg lsm; - char *varlen_data; + struct lttcomm_session_msg lsm = { + .cmd_type = LTTNG_DISABLE_EVENT, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, + }; + struct lttng_payload payload; int ret = 0; unsigned int free_filter_expression = 0; struct filter_parser_ctx *ctx = NULL; + size_t bytecode_len = 0; + + /* + * We have either a filter or some exclusions, so we need to set up + * a variable-length payload from where to send the data. + */ + lttng_payload_init(&payload); + /* * Cast as non-const since we may replace the filter expression * by a dynamically allocated string. Otherwise, the original @@ -1372,48 +1316,7 @@ int lttng_disable_event_ext(struct lttng_handle *handle, goto error; } - memset(&lsm, 0, sizeof(lsm)); - - /* If no channel name, send empty string. */ - ret = lttng_strncpy(lsm.u.disable.channel_name, channel_name ?: "", - sizeof(lsm.u.disable.channel_name)); - if (ret) { - ret = -LTTNG_ERR_INVALID; - goto error; - } - - lsm.cmd_type = LTTNG_DISABLE_EVENT; - - COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - memcpy(&lsm.u.disable.event, ev, sizeof(lsm.u.disable.event)); - - ret = lttng_strncpy(lsm.session.name, handle->session_name, - sizeof(lsm.session.name)); - if (ret) { - ret = -LTTNG_ERR_INVALID; - goto error; - } - - lsm.u.disable.bytecode_len = 0; - - /* - * For the JUL domain, a filter is enforced except for the - * disable all event. This is done to avoid having the event in - * all sessions thus filtering by logger name. - */ - if (filter_expression == NULL && - (handle->domain.type != LTTNG_DOMAIN_JUL && - handle->domain.type != LTTNG_DOMAIN_LOG4J && - handle->domain.type != LTTNG_DOMAIN_PYTHON)) { - goto ask_sessiond; - } - - /* - * We have a filter, so we need to set up a variable-length - * memory block from where to send the data. - */ - - /* Parse filter expression */ + /* Parse filter expression. */ if (filter_expression != NULL || handle->domain.type == LTTNG_DOMAIN_JUL || handle->domain.type == LTTNG_DOMAIN_LOG4J || handle->domain.type == LTTNG_DOMAIN_PYTHON) { @@ -1422,7 +1325,7 @@ int lttng_disable_event_ext(struct lttng_handle *handle, handle->domain.type == LTTNG_DOMAIN_PYTHON) { char *agent_filter; - /* Setup JUL filter if needed. */ + /* Setup agent filter if needed. */ agent_filter = set_agent_filter(filter_expression, ev); if (!agent_filter) { if (!filter_expression) { @@ -1430,11 +1333,11 @@ int lttng_disable_event_ext(struct lttng_handle *handle, * No JUL and no filter, just skip * everything below. */ - goto ask_sessiond; + goto serialize; } } else { /* - * With a JUL filter, the original filter has + * With an agent filter, the original filter has * been added to it thus replace the filter * expression. */ @@ -1443,48 +1346,92 @@ int lttng_disable_event_ext(struct lttng_handle *handle, } } + if (strnlen(filter_expression, LTTNG_FILTER_MAX_LEN) == + LTTNG_FILTER_MAX_LEN) { + ret = -LTTNG_ERR_FILTER_INVAL; + goto error; + } + ret = filter_parser_ctx_create_from_filter_expression(filter_expression, &ctx); if (ret) { - goto filter_error; + goto error; } - lsm.u.enable.bytecode_len = sizeof(ctx->bytecode->b) - + bytecode_get_len(&ctx->bytecode->b); - lsm.u.enable.expression_len = strlen(filter_expression) + 1; + bytecode_len = bytecode_get_len(&ctx->bytecode->b) + + sizeof(ctx->bytecode->b); + if (bytecode_len > LTTNG_FILTER_MAX_LEN) { + ret = -LTTNG_ERR_FILTER_INVAL; + goto error; + } } - varlen_data = (char *) zmalloc(lsm.u.disable.bytecode_len - + lsm.u.disable.expression_len); - if (!varlen_data) { - ret = -LTTNG_ERR_EXCLUSION_NOMEM; - goto mem_error; +serialize: + ret = lttng_event_serialize(ev, 0, NULL, + filter_expression, bytecode_len, + (ctx && bytecode_len) ? &ctx->bytecode->b : NULL, + &payload); + if (ret) { + ret = -LTTNG_ERR_INVALID; + goto error; } - /* Add filter expression. */ - if (lsm.u.disable.expression_len != 0) { - memcpy(varlen_data, - filter_expression, - lsm.u.disable.expression_len); + /* If no channel name, send empty string. */ + ret = lttng_strncpy(lsm.u.disable.channel_name, channel_name ?: "", + sizeof(lsm.u.disable.channel_name)); + if (ret) { + ret = -LTTNG_ERR_INVALID; + goto error; } - /* Add filter bytecode next. */ - if (ctx && lsm.u.disable.bytecode_len != 0) { - memcpy(varlen_data - + lsm.u.disable.expression_len, - &ctx->bytecode->b, - lsm.u.disable.bytecode_len); + + /* Domain */ + COPY_DOMAIN_PACKED(lsm.domain, handle->domain); + + /* Session name */ + ret = lttng_strncpy(lsm.session.name, handle->session_name, + sizeof(lsm.session.name)); + if (ret) { + ret = -LTTNG_ERR_INVALID; + goto error; } - ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(&lsm, varlen_data, - lsm.u.disable.bytecode_len + lsm.u.disable.expression_len, NULL); - free(varlen_data); + /* Length of the serialized event. */ + lsm.u.disable.length = (uint32_t) payload.buffer.size; + + { + struct lttng_payload_view view = lttng_payload_view_from_payload( + &payload, 0, -1); + int fd_count = lttng_payload_view_get_fd_handle_count(&view); + int fd_to_send; + + if (fd_count < 0) { + goto error; + } + + LTTNG_ASSERT(fd_count == 0 || fd_count == 1); + if (fd_count == 1) { + struct fd_handle *h = + lttng_payload_view_pop_fd_handle(&view); + + if (!h) { + goto error; + } + + fd_to_send = fd_handle_get_fd(h); + fd_handle_put(h); + } + + ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, + fd_count ? &fd_to_send : NULL, fd_count, + view.buffer.size ? view.buffer.data : NULL, + view.buffer.size, NULL, NULL, 0); + } -mem_error: +error: if (filter_expression && ctx) { filter_bytecode_free(ctx); filter_ir_free(ctx); filter_parser_ctx_free(ctx); } -filter_error: if (free_filter_expression) { /* * The filter expression has been replaced and must be freed as @@ -1493,15 +1440,11 @@ filter_error: */ free(filter_expression); } -error: /* * Return directly to the caller and don't ask the sessiond since * something went wrong in the parsing of data above. */ - return ret; - -ask_sessiond: - ret = lttng_ctl_ask_sessiond(&lsm, NULL); + lttng_payload_reset(&payload); return ret; } @@ -1534,10 +1477,9 @@ end: struct lttng_channel *lttng_channel_create(struct lttng_domain *domain) { struct lttng_channel *channel = NULL; - struct lttng_channel_extended *extended = NULL; if (!domain) { - goto error; + goto end; } /* Validate domain. */ @@ -1548,36 +1490,26 @@ struct lttng_channel *lttng_channel_create(struct lttng_domain *domain) case LTTNG_BUFFER_PER_PID: break; default: - goto error; + goto end; } break; case LTTNG_DOMAIN_KERNEL: if (domain->buf_type != LTTNG_BUFFER_GLOBAL) { - goto error; + goto end; } break; default: - goto error; + goto end; } - channel = (lttng_channel *) zmalloc(sizeof(*channel)); + channel = lttng_channel_create_internal(); if (!channel) { - goto error; - } - - extended = (lttng_channel_extended *) zmalloc(sizeof(*extended)); - if (!extended) { - goto error; + goto end; } - channel->attr.extended.ptr = extended; - lttng_channel_set_default_attr(domain, &channel->attr); +end: return channel; -error: - free(channel); - free(extended); - return NULL; } void lttng_channel_destroy(struct lttng_channel *channel) @@ -1601,56 +1533,32 @@ int lttng_enable_channel(struct lttng_handle *handle, { enum lttng_error_code ret_code; int ret; + struct lttng_dynamic_buffer buffer; struct lttcomm_session_msg lsm; uint64_t total_buffer_size_needed_per_cpu = 0; + struct lttng_channel *channel = NULL; + + lttng_dynamic_buffer_init(&buffer); /* NULL arguments are forbidden. No default values. */ if (handle == NULL || in_chan == NULL) { - return -LTTNG_ERR_INVALID; - } - - memset(&lsm, 0, sizeof(lsm)); - memcpy(&lsm.u.channel.chan, in_chan, sizeof(lsm.u.channel.chan)); - lsm.u.channel.chan.attr.extended.ptr = NULL; - - if (!in_chan->attr.extended.ptr) { - struct lttng_channel *channel; - struct lttng_channel_extended *extended; - - channel = lttng_channel_create(&handle->domain); - if (!channel) { - return -LTTNG_ERR_NOMEM; - } - - /* - * Create a new channel in order to use default extended - * attribute values. - */ - extended = (struct lttng_channel_extended *) - channel->attr.extended.ptr; - memcpy(&lsm.u.channel.extended, extended, sizeof(*extended)); - lttng_channel_destroy(channel); - } else { - struct lttng_channel_extended *extended; - - extended = (struct lttng_channel_extended *) - in_chan->attr.extended.ptr; - memcpy(&lsm.u.channel.extended, extended, sizeof(*extended)); + ret = -LTTNG_ERR_INVALID; + goto end; } /* * Verify that the amount of memory required to create the requested * buffer is available on the system at the moment. */ - if (lsm.u.channel.chan.attr.num_subbuf > - UINT64_MAX / lsm.u.channel.chan.attr.subbuf_size) { + if (in_chan->attr.num_subbuf > + UINT64_MAX / in_chan->attr.subbuf_size) { /* Overflow */ ret = -LTTNG_ERR_OVERFLOW; goto end; } - total_buffer_size_needed_per_cpu = lsm.u.channel.chan.attr.num_subbuf * - lsm.u.channel.chan.attr.subbuf_size; + total_buffer_size_needed_per_cpu = + in_chan->attr.num_subbuf * in_chan->attr.subbuf_size; ret_code = check_enough_available_memory( total_buffer_size_needed_per_cpu); if (ret_code != LTTNG_OK) { @@ -1658,6 +1566,31 @@ int lttng_enable_channel(struct lttng_handle *handle, goto end; } + /* Copy the channel for easier manipulation. */ + channel = lttng_channel_copy(in_chan); + if (!channel) { + ret = -LTTNG_ERR_NOMEM; + goto end; + } + + /* Populate the channel extended attribute if necessary. */ + if (!channel->attr.extended.ptr) { + struct lttng_channel_extended *extended = + (struct lttng_channel_extended *) zmalloc( + sizeof(*extended)); + + if (!extended) { + ret = -LTTNG_ERR_NOMEM; + goto end; + } + lttng_channel_set_default_extended_attr( + &handle->domain, extended); + channel->attr.extended.ptr = extended; + } + + /* Prepare the payload */ + memset(&lsm, 0, sizeof(lsm)); + lsm.cmd_type = LTTNG_ENABLE_CHANNEL; COPY_DOMAIN_PACKED(lsm.domain, handle->domain); @@ -1668,8 +1601,19 @@ int lttng_enable_channel(struct lttng_handle *handle, goto end; } - ret = lttng_ctl_ask_sessiond(&lsm, NULL); + ret = lttng_channel_serialize(channel, &buffer); + if (ret) { + ret = -LTTNG_ERR_FATAL; + goto end; + } + + lsm.u.channel.length = buffer.size; + + ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header( + &lsm, buffer.data, buffer.size, NULL); end: + lttng_channel_destroy(channel); + lttng_dynamic_buffer_reset(&buffer); return ret; } @@ -1721,23 +1665,70 @@ end: int lttng_list_tracepoints(struct lttng_handle *handle, struct lttng_event **events) { - int ret; - struct lttcomm_session_msg lsm; + enum lttng_error_code ret_code; + int ret, total_payload_received; + char *reception_buffer = NULL; + struct lttcomm_session_msg lsm = { + .cmd_type = LTTNG_LIST_TRACEPOINTS, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, + }; + struct lttcomm_list_command_header *cmd_header = NULL; + size_t cmd_header_len; + unsigned int nb_events = 0; - if (handle == NULL) { - return -LTTNG_ERR_INVALID; - } + if (handle == NULL) { + ret = -LTTNG_ERR_INVALID; + goto end; + } - memset(&lsm, 0, sizeof(lsm)); - lsm.cmd_type = LTTNG_LIST_TRACEPOINTS; - COPY_DOMAIN_PACKED(lsm.domain, handle->domain); + COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - ret = lttng_ctl_ask_sessiond(&lsm, (void **) events); - if (ret < 0) { - return ret; + ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, NULL, 0, NULL, 0, + (void **) &reception_buffer, (void **) &cmd_header, + &cmd_header_len); + if (ret < 0) { + goto end; + } + + total_payload_received = ret; + + if (!cmd_header) { + ret = -LTTNG_ERR_UNK; + goto end; + } + + if (cmd_header->count > INT_MAX) { + ret = -LTTNG_ERR_OVERFLOW; + goto end; + } + + nb_events = (unsigned int) cmd_header->count; + + { + struct lttng_buffer_view events_view = + lttng_buffer_view_init(reception_buffer, 0, + total_payload_received); + struct lttng_payload_view events_payload_view = + lttng_payload_view_from_buffer_view( + &events_view, 0, -1); + + ret_code = lttng_events_create_and_flatten_from_payload( + &events_payload_view, nb_events, events); + if (ret_code != LTTNG_OK) { + ret = -ret_code; + goto end; + } } - return ret / sizeof(struct lttng_event); + ret = (int) nb_events; + +end: + free(cmd_header); + free(reception_buffer); + return ret; } /* @@ -1749,23 +1740,74 @@ int lttng_list_tracepoints(struct lttng_handle *handle, int lttng_list_tracepoint_fields(struct lttng_handle *handle, struct lttng_event_field **fields) { + enum lttng_error_code ret_code; int ret; struct lttcomm_session_msg lsm; + const struct lttcomm_list_command_header *cmd_header = NULL; + unsigned int nb_event_fields = 0; + struct lttng_payload reply; if (handle == NULL) { - return -LTTNG_ERR_INVALID; + ret = -LTTNG_ERR_INVALID; + goto end; } + lttng_payload_init(&reply); + memset(&lsm, 0, sizeof(lsm)); lsm.cmd_type = LTTNG_LIST_TRACEPOINT_FIELDS; COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - ret = lttng_ctl_ask_sessiond(&lsm, (void **) fields); - if (ret < 0) { - return ret; + { + lttng_payload_view message_view = + lttng_payload_view_init_from_buffer( + (const char *) &lsm, 0, + sizeof(lsm)); + + ret = lttng_ctl_ask_sessiond_payload(&message_view, &reply); + if (ret < 0) { + goto end; + } + } + + { + const lttng_buffer_view cmd_header_view = + lttng_buffer_view_from_dynamic_buffer( + &reply.buffer, 0, sizeof(*cmd_header)); + + if (!lttng_buffer_view_is_valid(&cmd_header_view)) { + ret = -LTTNG_ERR_INVALID_PROTOCOL; + goto end; + } + + cmd_header = (struct lttcomm_list_command_header *) + cmd_header_view.data; + } + + if (cmd_header->count > INT_MAX) { + ret = -LTTNG_ERR_OVERFLOW; + goto end; + } + + nb_event_fields = cmd_header->count; + + { + lttng_payload_view reply_view = + lttng_payload_view_from_payload(&reply, + sizeof(*cmd_header), -1); + + ret_code = lttng_event_fields_create_and_flatten_from_payload( + &reply_view, nb_event_fields, fields); + if (ret_code != LTTNG_OK) { + ret = -ret_code; + goto end; + } } - return ret / sizeof(struct lttng_event_field); + ret = nb_event_fields; + +end: + return ret; } /* @@ -1777,24 +1819,65 @@ int lttng_list_tracepoint_fields(struct lttng_handle *handle, */ int lttng_list_syscalls(struct lttng_event **events) { - int ret; - struct lttcomm_session_msg lsm; - - if (!events) { - return -LTTNG_ERR_INVALID; - } - - memset(&lsm, 0, sizeof(lsm)); - lsm.cmd_type = LTTNG_LIST_SYSCALLS; - /* Force kernel domain for system calls. */ - lsm.domain.type = LTTNG_DOMAIN_KERNEL; - - ret = lttng_ctl_ask_sessiond(&lsm, (void **) events); - if (ret < 0) { - return ret; - } + enum lttng_error_code ret_code; + int ret, total_payload_received; + char *reception_buffer = NULL; + struct lttcomm_session_msg lsm = {}; + struct lttcomm_list_command_header *cmd_header = NULL; + size_t cmd_header_len; + uint32_t nb_events = 0; + + if (!events) { + ret = -LTTNG_ERR_INVALID; + goto end; + } + + lsm.cmd_type = LTTNG_LIST_SYSCALLS; + /* Force kernel domain for system calls. */ + lsm.domain.type = LTTNG_DOMAIN_KERNEL; + + ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, NULL, 0, NULL, 0, + (void **) &reception_buffer, (void **) &cmd_header, + &cmd_header_len); + if (ret < 0) { + goto end; + } + total_payload_received = ret; + + if (!cmd_header) { + ret = -LTTNG_ERR_UNK; + goto end; + } + + if (cmd_header->count > INT_MAX) { + ret = -LTTNG_ERR_OVERFLOW; + goto end; + } + + nb_events = (unsigned int) cmd_header->count; + + { + const struct lttng_buffer_view events_view = + lttng_buffer_view_init(reception_buffer, 0, + total_payload_received); + struct lttng_payload_view events_payload_view = + lttng_payload_view_from_buffer_view( + &events_view, 0, -1); + + ret_code = lttng_events_create_and_flatten_from_payload( + &events_payload_view, nb_events, events); + if (ret_code != LTTNG_OK) { + ret = -ret_code; + goto end; + } + } + + ret = (int) nb_events; - return ret / sizeof(struct lttng_event); +end: + free(reception_buffer); + free(cmd_header); + return ret; } /* @@ -1816,6 +1899,10 @@ enum lttng_error_code lttng_create_session_ext( enum lttng_error_code ret_code; struct lttcomm_session_msg lsm = { .cmd_type = LTTNG_CREATE_SESSION_EXT, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, }; void *reply = NULL; struct lttng_buffer_view reply_view; @@ -2271,12 +2358,14 @@ error: int lttng_list_channels(struct lttng_handle *handle, struct lttng_channel **channels) { - int ret; - size_t channel_count, i; - const size_t channel_size = sizeof(struct lttng_channel) + - sizeof(struct lttng_channel_extended); + int ret, total_payload_received; struct lttcomm_session_msg lsm; - char *extended_at; + char *reception_buffer = NULL; + size_t cmd_header_len = 0; + struct lttcomm_list_command_header *cmd_header = NULL; + struct lttng_dynamic_buffer tmp_buffer; + + lttng_dynamic_buffer_init(&tmp_buffer); if (handle == NULL) { ret = -LTTNG_ERR_INVALID; @@ -2294,31 +2383,48 @@ int lttng_list_channels(struct lttng_handle *handle, COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - ret = lttng_ctl_ask_sessiond(&lsm, (void**) channels); + ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, NULL, 0, NULL, 0, + (void **) &reception_buffer, (void **) &cmd_header, + &cmd_header_len); if (ret < 0) { goto end; } - if (ret % channel_size) { - ret = -LTTNG_ERR_UNK; - free(*channels); - *channels = NULL; + total_payload_received = ret; + + if (cmd_header_len != sizeof(*cmd_header)) { + ret = -LTTNG_ERR_FATAL; goto end; } - channel_count = (size_t) ret / channel_size; - /* Set extended info pointers */ - extended_at = ((char *) *channels) + - channel_count * sizeof(struct lttng_channel); - for (i = 0; i < channel_count; i++) { - struct lttng_channel *chan = &(*channels)[i]; + if (!cmd_header) { + ret = LTTNG_ERR_UNK; + goto end; + } - chan->attr.extended.ptr = extended_at; - extended_at += sizeof(struct lttng_channel_extended); + if (cmd_header->count > INT_MAX) { + ret = -LTTNG_ERR_OVERFLOW; + goto end; } - ret = (int) channel_count; + { + enum lttng_error_code ret_code; + const struct lttng_buffer_view events_view = + lttng_buffer_view_init(reception_buffer, 0, + total_payload_received); + + ret_code = lttng_channels_create_and_flatten_from_buffer( + &events_view, cmd_header->count, channels); + if (ret_code != LTTNG_OK) { + ret = -ret_code; + goto end; + } + } + + ret = (int) cmd_header->count; end: + free(cmd_header); + free(reception_buffer); return ret; } @@ -2333,30 +2439,21 @@ int lttng_list_events(struct lttng_handle *handle, { int ret; struct lttcomm_session_msg lsm = {}; - const struct lttcomm_event_command_header *cmd_header = NULL; - uint32_t nb_events, i; - const char *comm_ext_at; - struct lttng_dynamic_buffer listing; - size_t storage_req; - struct lttng_payload payload; - struct lttng_payload payload_copy; + struct lttng_payload reply; struct lttng_payload_view lsm_view = lttng_payload_view_init_from_buffer( (const char *) &lsm, 0, sizeof(lsm)); - struct lttng_buffer_view cmd_header_view; - struct lttng_buffer_view cmd_payload_view; - struct lttng_buffer_view flat_events_view; - struct lttng_buffer_view ext_view; + unsigned int nb_events = 0; - /* Safety check. An handle and channel name are mandatory */ + lttng_payload_init(&reply); + + /* Safety check. An handle and channel name are mandatory. */ if (handle == NULL || channel_name == NULL) { ret = -LTTNG_ERR_INVALID; goto end; } - lttng_payload_init(&payload); - lttng_payload_init(&payload_copy); - + /* Initialize command parameters. */ lsm.cmd_type = LTTNG_LIST_EVENTS; ret = lttng_strncpy(lsm.session.name, handle->session_name, sizeof(lsm.session.name)); @@ -2374,275 +2471,52 @@ int lttng_list_events(struct lttng_handle *handle, COPY_DOMAIN_PACKED(lsm.domain, handle->domain); - ret = lttng_ctl_ask_sessiond_payload(&lsm_view, &payload); + /* Execute command against the session daemon. */ + ret = lttng_ctl_ask_sessiond_payload(&lsm_view, &reply); if (ret < 0) { goto end; } - /* - * A copy of the payload is performed since it will be - * consumed twice. Consuming the same payload twice is invalid since - * it will cause any received file descriptor to become "shared" - * between different instances of the resulting objects. - */ - ret = lttng_payload_copy(&payload, &payload_copy); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto end; - } - - cmd_header_view = lttng_buffer_view_from_dynamic_buffer( - &payload.buffer, 0, sizeof(*cmd_header)); - if (!lttng_buffer_view_is_valid(&cmd_header_view)) { - ret = -LTTNG_ERR_INVALID_PROTOCOL; - goto end; - } - - cmd_header = (typeof(cmd_header)) cmd_header_view.data; - - /* Set number of events and free command header */ - nb_events = cmd_header->nb_events; - if (nb_events > INT_MAX) { - ret = -LTTNG_ERR_OVERFLOW; - goto end; - } - - cmd_payload_view = lttng_buffer_view_from_dynamic_buffer( - &payload.buffer, sizeof(*cmd_header), -1); - - /* - * The buffer that is returned must contain a "flat" version of - * the events that are returned. In other words, all pointers - * within an lttng_event must point to a location within the returned - * buffer so that the user may free everything by simply calling free() - * on the returned buffer. This is needed in order to maintain API - * compatibility. - * - * A first pass is performed to compute the size of the buffer that - * must be allocated. A second pass is then performed to setup - * the returned events so that their members always point within the - * buffer. - * - * The layout of the returned buffer is as follows: - * - struct lttng_event[nb_events], - * - nb_events times the following: - * - struct lttng_event_extended, - * - flattened version of userspace_probe_location - * - filter_expression - * - exclusions - * - padding to align to 64-bits - */ - ext_view = lttng_buffer_view_from_view(&cmd_payload_view, - nb_events * sizeof(struct lttng_event), -1); - comm_ext_at = ext_view.data; - storage_req = nb_events * sizeof(struct lttng_event); { - struct lttng_payload_view payload_view = - lttng_payload_view_from_payload(&payload, 0, -1); - - for (i = 0; i < nb_events; i++) { - const struct lttcomm_event_extended_header *ext_comm = - (struct lttcomm_event_extended_header *) - comm_ext_at; - int probe_storage_req = 0; - - comm_ext_at += sizeof(*ext_comm); - comm_ext_at += ext_comm->filter_len; - comm_ext_at += ext_comm->nb_exclusions * - LTTNG_SYMBOL_NAME_LEN; - - if (ext_comm->userspace_probe_location_len) { - struct lttng_userspace_probe_location - *probe_location = NULL; - struct lttng_payload_view probe_location_view = lttng_payload_view_from_view( - &payload_view, - (const char *) comm_ext_at - - payload_view.buffer.data, - ext_comm->userspace_probe_location_len); - - if (!lttng_payload_view_is_valid(&probe_location_view)) { - ret = -LTTNG_ERR_PROBE_LOCATION_INVAL; - goto end; - } - - /* - * Create a temporary userspace probe location - * to determine the size needed by a "flattened" - * version of that same probe location. - */ - ret = lttng_userspace_probe_location_create_from_payload( - &probe_location_view, - &probe_location); - if (ret < 0) { - ret = -LTTNG_ERR_PROBE_LOCATION_INVAL; - goto end; - } + const struct lttcomm_list_command_header *cmd_reply_header = + NULL; + const lttng_payload_view cmd_reply_header_view = + lttng_payload_view_from_payload(&reply, 0, + sizeof(*cmd_reply_header)); - ret = lttng_userspace_probe_location_flatten( - probe_location, NULL); - lttng_userspace_probe_location_destroy( - probe_location); - if (ret < 0) { - ret = -LTTNG_ERR_PROBE_LOCATION_INVAL; - goto end; - } - - probe_storage_req = ret; - comm_ext_at += ext_comm->userspace_probe_location_len; - } - - storage_req += sizeof(struct lttng_event_extended); - storage_req += ext_comm->filter_len; - storage_req += ext_comm->nb_exclusions * - LTTNG_SYMBOL_NAME_LEN; - /* Padding to ensure the flat probe is aligned. */ - storage_req = lttng_align_ceil(storage_req, sizeof(uint64_t)); - storage_req += probe_storage_req; + if (!lttng_payload_view_is_valid(&cmd_reply_header_view)) { + ret = -LTTNG_ERR_INVALID_PROTOCOL; + goto end; } - } - lttng_dynamic_buffer_init(&listing); - /* - * We must ensure that "listing" is never resized so as to preserve - * the validity of the flattened objects. - */ - ret = lttng_dynamic_buffer_set_capacity(&listing, storage_req); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto end; - } + cmd_reply_header = (const struct lttcomm_list_command_header *) + cmd_reply_header_view.buffer + .data; + if (cmd_reply_header->count > INT_MAX) { + ret = -LTTNG_ERR_OVERFLOW; + goto end; + } - cmd_payload_view = lttng_buffer_view_from_dynamic_buffer( - &payload_copy.buffer, sizeof(*cmd_header), -1); - flat_events_view = lttng_buffer_view_from_view(&cmd_payload_view, 0, - nb_events * sizeof(struct lttng_event)); - ret = lttng_dynamic_buffer_append_view(&listing, &flat_events_view); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto free_dynamic_buffer; + nb_events = (unsigned int) cmd_reply_header->count; } - ext_view = lttng_buffer_view_from_view(&cmd_payload_view, - nb_events * sizeof(struct lttng_event), -1); - comm_ext_at = ext_view.data; - { - struct lttng_payload_view payload_copy_view = - lttng_payload_view_from_payload( - &payload_copy, 0, -1); - - for (i = 0; i < nb_events; i++) { - struct lttng_event *event = (typeof(event))( - listing.data + - (sizeof(struct lttng_event) * i)); - const struct lttcomm_event_extended_header *ext_comm = - (typeof(ext_comm)) comm_ext_at; - struct lttng_event_extended *event_extended = - (typeof(event_extended))(listing.data + - listing.size); - - /* Insert struct lttng_event_extended. */ - ret = lttng_dynamic_buffer_set_size(&listing, - listing.size + sizeof(*event_extended)); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto free_dynamic_buffer; - } - event->extended.ptr = event_extended; - - comm_ext_at += sizeof(*ext_comm); - - /* Insert filter expression. */ - if (ext_comm->filter_len) { - event_extended->filter_expression = - listing.data + listing.size; - ret = lttng_dynamic_buffer_append(&listing, - comm_ext_at, - ext_comm->filter_len); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto free_dynamic_buffer; - } - comm_ext_at += ext_comm->filter_len; - } - - /* Insert exclusions. */ - if (ext_comm->nb_exclusions) { - event_extended->exclusions.count = - ext_comm->nb_exclusions; - event_extended->exclusions.strings = - listing.data + listing.size; - - ret = lttng_dynamic_buffer_append(&listing, - comm_ext_at, - ext_comm->nb_exclusions * - LTTNG_SYMBOL_NAME_LEN); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto free_dynamic_buffer; - } - comm_ext_at += ext_comm->nb_exclusions * - LTTNG_SYMBOL_NAME_LEN; - } - - /* Insert padding to align to 64-bits. */ - ret = lttng_dynamic_buffer_set_size(&listing, - lttng_align_ceil(listing.size, - sizeof(uint64_t))); - if (ret) { - ret = -LTTNG_ERR_NOMEM; - goto free_dynamic_buffer; - } - - /* Insert flattened userspace probe location. */ - if (ext_comm->userspace_probe_location_len) { - struct lttng_userspace_probe_location - *probe_location = NULL; - struct lttng_payload_view probe_location_view = lttng_payload_view_from_view( - &payload_copy_view, - (const char *) comm_ext_at - - payload_copy_view.buffer.data, - ext_comm->userspace_probe_location_len); - - if (!lttng_payload_view_is_valid(&probe_location_view)) { - ret = -LTTNG_ERR_PROBE_LOCATION_INVAL; - goto free_dynamic_buffer; - } - - ret = lttng_userspace_probe_location_create_from_payload( - &probe_location_view, - &probe_location); - if (ret < 0) { - ret = -LTTNG_ERR_PROBE_LOCATION_INVAL; - goto free_dynamic_buffer; - } - - event_extended->probe_location = (struct lttng_userspace_probe_location - *) (listing.data + - listing.size); - ret = lttng_userspace_probe_location_flatten( - probe_location, &listing); - lttng_userspace_probe_location_destroy( - probe_location); - if (ret < 0) { - ret = -LTTNG_ERR_PROBE_LOCATION_INVAL; - goto free_dynamic_buffer; - } - - comm_ext_at += ext_comm->userspace_probe_location_len; - } + enum lttng_error_code ret_code; + lttng_payload_view cmd_reply_payload = lttng_payload_view_from_payload( + &reply, + sizeof(struct lttcomm_list_command_header), -1); + + ret_code = lttng_events_create_and_flatten_from_payload( + &cmd_reply_payload, nb_events, events); + if (ret_code != LTTNG_OK) { + ret = -((int) ret_code); + goto end; } } - /* Don't reset listing buffer as we return its content. */ - *events = (struct lttng_event *) listing.data; - lttng_dynamic_buffer_init(&listing); ret = (int) nb_events; -free_dynamic_buffer: - lttng_dynamic_buffer_reset(&listing); end: - lttng_payload_reset(&payload); - lttng_payload_reset(&payload_copy); + lttng_payload_reset(&reply); return ret; } @@ -2675,8 +2549,8 @@ end: return ret; } -int lttng_calibrate(struct lttng_handle *handle, - struct lttng_calibrate *calibrate) +int lttng_calibrate(struct lttng_handle *handle __attribute__((unused)), + struct lttng_calibrate *calibrate __attribute__((unused))) { /* * This command was removed in LTTng 2.9. @@ -2698,6 +2572,7 @@ void lttng_channel_set_default_attr(struct lttng_domain *domain, return; } + /* Save the pointer for later use */ extended = (struct lttng_channel_extended *) attr->extended.ptr; memset(attr, 0, sizeof(struct lttng_channel_attr)); @@ -2714,12 +2589,6 @@ void lttng_channel_set_default_attr(struct lttng_domain *domain, attr->subbuf_size = default_get_kernel_channel_subbuf_size(); attr->num_subbuf = DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM; attr->output = DEFAULT_KERNEL_CHANNEL_OUTPUT; - if (extended) { - extended->monitor_timer_interval = - DEFAULT_KERNEL_CHANNEL_MONITOR_TIMER; - extended->blocking_timeout = - DEFAULT_KERNEL_CHANNEL_BLOCKING_TIMEOUT; - } break; case LTTNG_DOMAIN_UST: switch (domain->buf_type) { @@ -2731,12 +2600,6 @@ void lttng_channel_set_default_attr(struct lttng_domain *domain, DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER; attr->read_timer_interval = DEFAULT_UST_UID_CHANNEL_READ_TIMER; - if (extended) { - extended->monitor_timer_interval = - DEFAULT_UST_UID_CHANNEL_MONITOR_TIMER; - extended->blocking_timeout = - DEFAULT_UST_UID_CHANNEL_BLOCKING_TIMEOUT; - } break; case LTTNG_BUFFER_PER_PID: default: @@ -2747,12 +2610,6 @@ void lttng_channel_set_default_attr(struct lttng_domain *domain, DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER; attr->read_timer_interval = DEFAULT_UST_PID_CHANNEL_READ_TIMER; - if (extended) { - extended->monitor_timer_interval = - DEFAULT_UST_PID_CHANNEL_MONITOR_TIMER; - extended->blocking_timeout = - DEFAULT_UST_PID_CHANNEL_BLOCKING_TIMEOUT; - } break; } default: @@ -2760,6 +2617,11 @@ void lttng_channel_set_default_attr(struct lttng_domain *domain, break; } + if (extended) { + lttng_channel_set_default_extended_attr(domain, extended); + } + + /* Reassign the extended pointer. */ attr->extended.ptr = extended; } @@ -2994,7 +2856,7 @@ error: */ extern "C" LTTNG_EXPORT int lttng_enable_consumer(struct lttng_handle *handle); -int lttng_enable_consumer(struct lttng_handle *handle) +int lttng_enable_consumer(struct lttng_handle *handle __attribute__((unused))) { return -ENOSYS; } @@ -3004,7 +2866,7 @@ int lttng_enable_consumer(struct lttng_handle *handle) */ extern "C" LTTNG_EXPORT int lttng_disable_consumer(struct lttng_handle *handle); -int lttng_disable_consumer(struct lttng_handle *handle) +int lttng_disable_consumer(struct lttng_handle *handle __attribute__((unused))) { return -ENOSYS; } @@ -3015,8 +2877,9 @@ int lttng_disable_consumer(struct lttng_handle *handle) extern "C" LTTNG_EXPORT int _lttng_create_session_ext(const char *name, const char *url, const char *datetime); -int _lttng_create_session_ext(const char *name, const char *url, - const char *datetime) +int _lttng_create_session_ext(const char *name __attribute__((unused)), + const char *url __attribute__((unused)), + const char *datetime __attribute__((unused))) { return -ENOSYS; } @@ -3148,6 +3011,10 @@ int _lttng_register_trigger(struct lttng_trigger *trigger, const char *name, int ret; struct lttcomm_session_msg lsm = { .cmd_type = LTTNG_REGISTER_TRIGGER, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, }; lsm.u.trigger.is_trigger_anonymous = !name && !generate_name; struct lttcomm_session_msg *message_lsm; @@ -3320,6 +3187,10 @@ enum lttng_error_code lttng_error_query_execute( enum lttng_error_code ret_code; struct lttcomm_session_msg lsm = { .cmd_type = LTTNG_EXECUTE_ERROR_QUERY, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, }; struct lttng_payload message; struct lttng_payload reply; @@ -3504,7 +3375,13 @@ enum lttng_error_code lttng_list_triggers(struct lttng_triggers **triggers) { int ret; enum lttng_error_code ret_code = LTTNG_OK; - struct lttcomm_session_msg lsm = { .cmd_type = LTTNG_LIST_TRIGGERS }; + struct lttcomm_session_msg lsm = { + .cmd_type = LTTNG_LIST_TRIGGERS, + .session = {}, + .domain = {}, + .u = {}, + .fd_count = 0, + }; struct lttng_triggers *local_triggers = NULL; struct lttng_payload reply; struct lttng_payload_view lsm_view =