Improve the lttng list feature
authorDavid Goulet <david.goulet@polymtl.ca>
Wed, 3 Aug 2011 19:56:54 +0000 (15:56 -0400)
committerDavid Goulet <david.goulet@polymtl.ca>
Wed, 3 Aug 2011 20:02:07 +0000 (16:02 -0400)
Introduce three new functions to the public API which are
lttng_list_channels, lttng_list_events and lttng_list_domains.

Also add the lttng_list_kernel_events which list available tracing
events of the kernel.

Adds new options to the lttng list command for listing a lot more
details of a tracing session including channels, events and domains.

Also adds the enabled flag to the lttng_event and lttng_channel
structure.

Fix a bad pointer cast in list events.

Signed-off-by: David Goulet <david.goulet@polymtl.ca>
include/lttng/lttng.h
liblttngctl/liblttngctl.c
liblttsessiondcomm/liblttsessiondcomm.h
ltt-sessiond/kernel-ctl.c
ltt-sessiond/kernel-ctl.h
ltt-sessiond/main.c
lttng/commands/list.c

index 2cbb7f7ed38ddcda2f5efb0ac926d89b9e1f9863..bd8cf45a8414e0a450ccc01398804be76c89f6eb 100644 (file)
@@ -58,14 +58,6 @@ enum lttng_domain_type {
        LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN,
 };
 
        LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN,
 };
 
-struct lttng_domain {
-       enum lttng_domain_type type;
-       union {
-               pid_t pid;
-               char exec_name[NAME_MAX];
-       } attr;
-};
-
 /*
  * Instrumentation type of tracing event.
  */
 /*
  * Instrumentation type of tracing event.
  */
@@ -98,6 +90,14 @@ enum lttng_event_context_type {
        LTTNG_EVENT_CONTEXT_VPPID              = 9,
 };
 
        LTTNG_EVENT_CONTEXT_VPPID              = 9,
 };
 
+struct lttng_domain {
+       enum lttng_domain_type type;
+       union {
+               pid_t pid;
+               char exec_name[NAME_MAX];
+       } attr;
+};
+
 /* Perf counter attributes */
 struct lttng_event_perf_counter_ctx {
        uint32_t type;
 /* Perf counter attributes */
 struct lttng_event_perf_counter_ctx {
        uint32_t type;
@@ -138,6 +138,7 @@ struct lttng_event_function_attr {
 struct lttng_event {
        char name[LTTNG_SYMBOL_NAME_LEN];
        enum lttng_event_type type;
 struct lttng_event {
        char name[LTTNG_SYMBOL_NAME_LEN];
        enum lttng_event_type type;
+       uint32_t enabled;
        /* Per event type configuration */
        union {
                struct lttng_event_probe_attr probe;
        /* Per event type configuration */
        union {
                struct lttng_event_probe_attr probe;
@@ -162,6 +163,7 @@ struct lttng_channel_attr {
  */
 struct lttng_channel {
        char name[NAME_MAX];
  */
 struct lttng_channel {
        char name[NAME_MAX];
+       uint32_t enabled;
        struct lttng_channel_attr attr;
 };
 
        struct lttng_channel_attr attr;
 };
 
@@ -209,13 +211,44 @@ extern int lttng_create_session(const char *name, const char *path);
 extern int lttng_destroy_session(const char *name);
 
 /*
 extern int lttng_destroy_session(const char *name);
 
 /*
- * List tracing sessions.
+ * List all tracing sessions.
  *
  *
- * Return the size of the "lttng_session" array. Caller must free(3) the
- * returned data.
+ * Return the size of the "lttng_session" array. Caller must free(3).
  */
 extern int lttng_list_sessions(struct lttng_session **sessions);
 
  */
 extern int lttng_list_sessions(struct lttng_session **sessions);
 
+/*
+ * List registered domain(s) of the session.
+ *
+ * Return the size of the "lttng_domain" array. Caller must free(3).
+ */
+extern int lttng_list_domains(const char *session_name,
+               struct lttng_domain **domains);
+
+/*
+ * List channel(s) of a session.
+ *
+ * Return the size of the "lttng_channel" array. Caller must free(3).
+ */
+extern int lttng_list_channels(struct lttng_domain *domain,
+               const char *session_name, struct lttng_channel **channels);
+
+/*
+ * List event(s) of a session channel.
+ *
+ * Return the size of the "lttng_event" array. Caller must free(3).
+ */
+extern int lttng_list_events(struct lttng_domain *domain,
+               const char *session_name, const char *channel_name,
+               struct lttng_event **events);
+
+/*
+ * List available kernel tracing events
+ *
+ * Return the size of the "lttng_event" array. Caller must free(3).
+ */
+extern int lttng_list_kernel_events(struct lttng_event **events);
+
 /*
  * Check if a session daemon is alive.
  */
 /*
  * Check if a session daemon is alive.
  */
@@ -304,6 +337,6 @@ extern int lttng_disable_channel(struct lttng_domain *domain,
  *
  * Return the size of the allocated event list. Caller must free(3) the data.
  */
  *
  * Return the size of the allocated event list. Caller must free(3) the data.
  */
-extern int lttng_list_events(struct lttng_domain *domain, char **event_list);
+//extern int lttng_list_events(struct lttng_domain *domain, char **event_list);
 
 #endif /* _LTTNG_H */
 
 #endif /* _LTTNG_H */
index e0a81588281b1f1e82955627abe7eb22c7300331..0cc3268f78e4520bed4d9f5b70177772737c46be 100644 (file)
@@ -278,6 +278,26 @@ end:
        return ret;
 }
 
        return ret;
 }
 
+/*
+ * Copy domain to lttcomm_session_msg domain.
+ *
+ * Return -1 if the domain is unkown.
+ */
+static int copy_lttng_domain(struct lttng_domain *dom)
+{
+       switch (dom->type) {
+       case LTTNG_DOMAIN_KERNEL:
+       case LTTNG_DOMAIN_UST:
+       case LTTNG_DOMAIN_UST_EXEC_NAME:
+       case LTTNG_DOMAIN_UST_PID:
+       case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
+               memcpy(&lsm.domain, dom, sizeof(struct lttng_domain));
+               return 0;
+       default:
+               return -1;
+       }
+}
+
 /*
  *  Start tracing for all trace of the session.
  */
 /*
  *  Start tracing for all trace of the session.
  */
@@ -448,28 +468,18 @@ int lttng_disable_channel(struct lttng_domain *domain, const char *name)
 }
 
 /*
 }
 
 /*
- * List all available events in the kernel.
+ * List all available kernel events.
  *
  * Return the size (bytes) of the list and set the event_list array.
  * On error, return negative value.
  */
  *
  * Return the size (bytes) of the list and set the event_list array.
  * On error, return negative value.
  */
-int lttng_list_events(struct lttng_domain *domain, char **event_list)
+int lttng_list_kernel_events(struct lttng_event **events)
 {
        int ret;
 
 {
        int ret;
 
-       switch (domain->type) {
-               case LTTNG_DOMAIN_KERNEL:
-                       ret = ask_sessiond(LTTNG_KERNEL_LIST_EVENTS, (void **) event_list);
-                       break;
-               case LTTNG_DOMAIN_UST:
-                       ret = LTTCOMM_NOT_IMPLEMENTED;
-                       break;
-               default:
-                       ret = LTTCOMM_UNKNOWN_DOMAIN;
-                       break;
-       };
+       ret = ask_sessiond(LTTNG_KERNEL_LIST_EVENTS, (void **) events);
 
 
-       return ret;
+       return ret / sizeof(struct lttng_event);
 }
 
 /*
 }
 
 /*
@@ -521,6 +531,68 @@ int lttng_list_sessions(struct lttng_session **sessions)
        return ret / sizeof(struct lttng_session);
 }
 
        return ret / sizeof(struct lttng_session);
 }
 
+/*
+ * List domain of a session.
+ */
+int lttng_list_domains(const char *session_name, struct lttng_domain **domains)
+{
+       int ret;
+
+       strncpy(lsm.session_name, session_name, NAME_MAX);
+       ret = ask_sessiond(LTTNG_LIST_DOMAINS, (void**) domains);
+       if (ret < 0) {
+               return ret;
+       }
+
+       return ret / sizeof(struct lttng_domain);
+}
+
+/*
+ * List channels of a session
+ */
+int lttng_list_channels(struct lttng_domain *domain,
+               const char *session_name, struct lttng_channel **channels)
+{
+       int ret;
+
+       strncpy(lsm.session_name, session_name, NAME_MAX);
+       ret = copy_lttng_domain(domain);
+       if (ret < 0) {
+               return -LTTCOMM_UNKNOWN_DOMAIN;
+       }
+
+       ret = ask_sessiond(LTTNG_LIST_CHANNELS, (void**) channels);
+       if (ret < 0) {
+               return ret;
+       }
+
+       return ret / sizeof(struct lttng_channel);
+}
+
+/*
+ * List events of a session channel.
+ */
+int lttng_list_events(struct lttng_domain *domain,
+               const char *session_name, const char *channel_name,
+               struct lttng_event **events)
+{
+       int ret;
+
+       strncpy(lsm.session_name, session_name, NAME_MAX);
+       strncpy(lsm.u.list.channel_name, channel_name, NAME_MAX);
+       ret = copy_lttng_domain(domain);
+       if (ret < 0) {
+               return -LTTCOMM_UNKNOWN_DOMAIN;
+       }
+
+       ret = ask_sessiond(LTTNG_LIST_EVENTS, (void**) events);
+       if (ret < 0) {
+               return ret;
+       }
+
+       return ret / sizeof(struct lttng_event);
+}
+
 /*
  * Set session name for the current lsm.
  */
 /*
  * Set session name for the current lsm.
  */
index ab9fd7b5a4ee3a578f3cc1e78f1282cd0156ec7f..b1e006a02bbb79a47e9cea43055582dcfe4ed98d 100644 (file)
@@ -53,10 +53,10 @@ enum lttcomm_sessiond_command {
        /* Session daemon context command */
        LTTNG_CREATE_SESSION,
        LTTNG_DESTROY_SESSION,
        /* Session daemon context command */
        LTTNG_CREATE_SESSION,
        LTTNG_DESTROY_SESSION,
-       LTTNG_LIST_SESSIONS,
-       LTTNG_LIST_TRACES,
+       LTTNG_LIST_CHANNELS,
+       LTTNG_LIST_DOMAINS,
        LTTNG_LIST_EVENTS,
        LTTNG_LIST_EVENTS,
-       LTTNG_LIST_TRACEABLE_APPS,
+       LTTNG_LIST_SESSIONS,
        LTTNG_START_TRACE,
        LTTNG_STOP_TRACE,
 };
        LTTNG_START_TRACE,
        LTTNG_STOP_TRACE,
 };
@@ -128,7 +128,7 @@ struct lttcomm_session_msg {
        u32 cmd_type;    /* enum lttcomm_sessiond_command */
        char session_name[NAME_MAX];
        char path[PATH_MAX];
        u32 cmd_type;    /* enum lttcomm_sessiond_command */
        char session_name[NAME_MAX];
        char path[PATH_MAX];
-       pid_t pid;
+       struct lttng_domain domain;
        union {
                struct {
                        char channel_name[NAME_MAX];
        union {
                struct {
                        char channel_name[NAME_MAX];
@@ -149,6 +149,10 @@ struct lttcomm_session_msg {
                        char event_name[NAME_MAX];
                        struct lttng_event_context ctx;
                } context;
                        char event_name[NAME_MAX];
                        struct lttng_event_context ctx;
                } context;
+               /* List */
+               struct {
+                       char channel_name[NAME_MAX];
+               } list;
        } u;
 };
 
        } u;
 };
 
index ef3afb714bf1bebe6b96376f484f15044f2e4555..09a3763eb835c30aaaa25fca4081f27d34aeb881 100644 (file)
@@ -545,18 +545,16 @@ error:
 }
 
 /*
 }
 
 /*
- *  kernel_list_events
- *
- *  Get the event list from the kernel tracer and return that list in the CTF
- *  format.
+ * Get the event list from the kernel tracer and return the number of elements.
  */
  */
-ssize_t kernel_list_events(int tracer_fd, char **list)
+ssize_t kernel_list_events(int tracer_fd, struct lttng_event **events)
 {
 {
-       int fd;
-       char *buf, *line = NULL;
-       size_t nb, nbmem, total = 0;
+       int fd, pos;
+       char *event;
+       size_t nbmem, count = 0;
        ssize_t size;
        FILE *fp;
        ssize_t size;
        FILE *fp;
+       struct lttng_event *elist;
 
        fd = kernctl_tracepoint_list(tracer_fd);
        if (fd < 0) {
 
        fd = kernctl_tracepoint_list(tracer_fd);
        if (fd < 0) {
@@ -575,29 +573,29 @@ ssize_t kernel_list_events(int tracer_fd, char **list)
         * See kernel-ctl.h for explanation of this value
         */
        nbmem = KERNEL_EVENT_LIST_SIZE;
         * See kernel-ctl.h for explanation of this value
         */
        nbmem = KERNEL_EVENT_LIST_SIZE;
-       buf = malloc(nbmem);
+       elist = malloc(sizeof(struct lttng_event) * nbmem);
 
 
-       while ((size = getline(&line, &nb, fp)) != -1) {
-               if (total + size > nbmem) {
+       while ((size = fscanf(fp, "event { name = %m[^;]; };%n\n", &event, &pos)) == 1) {
+               if (count > nbmem) {
                        DBG("Reallocating event list from %zd to %zd bytes", nbmem,
                        DBG("Reallocating event list from %zd to %zd bytes", nbmem,
-                                       total + size + KERNEL_EVENT_LIST_SIZE);
+                                       nbmem + KERNEL_EVENT_LIST_SIZE);
                        /* Adding the default size again */
                        /* Adding the default size again */
-                       nbmem = total + size + KERNEL_EVENT_LIST_SIZE;
-                       buf = realloc(buf, nbmem);
-                       if (buf == NULL) {
+                       nbmem += KERNEL_EVENT_LIST_SIZE;
+                       elist = realloc(elist, nbmem);
+                       if (elist == NULL) {
                                perror("realloc list events");
                                goto error;
                        }
                }
                                perror("realloc list events");
                                goto error;
                        }
                }
-               memcpy(buf + total, line, size);
-               total += size;
+               strncpy(elist[count].name, event, strlen(event));
+               count++;
        }
 
        }
 
-       *list = buf;
+       *events = elist;
 
 
-       DBG("Kernel list events done");
+       DBG("Kernel list events done (%ld events)", count);
 
 
-       return total;
+       return count;
 
 error:
        return -1;
 
 error:
        return -1;
index 5f3306bc126b2f431f178e8033a31d3c503c622d..22250417db7883b496efa8d9211525add09a642c 100644 (file)
@@ -49,7 +49,7 @@ int kernel_flush_buffer(struct ltt_kernel_channel *channel);
 int kernel_metadata_flush_buffer(int fd);
 int kernel_start_session(struct ltt_kernel_session *session);
 int kernel_stop_session(struct ltt_kernel_session *session);
 int kernel_metadata_flush_buffer(int fd);
 int kernel_start_session(struct ltt_kernel_session *session);
 int kernel_stop_session(struct ltt_kernel_session *session);
-ssize_t kernel_list_events(int tracer_fd, char **event_list);
+ssize_t kernel_list_events(int tracer_fd, struct lttng_event **event_list);
 void kernel_wait_quiescent(int fd);
 
 #endif /* _LTT_KERNEL_CTL_H */
 void kernel_wait_quiescent(int fd);
 
 #endif /* _LTT_KERNEL_CTL_H */
index e069c1316cd6607308a5bc89f0a508fc38ae2121..fc1ef92248289dbf7a9f7a573ce24740a6acf129 100644 (file)
@@ -416,7 +416,7 @@ static int setup_lttng_msg(struct command_ctx *cmd_ctx, size_t size)
 
        /* Copy common data */
        cmd_ctx->llm->cmd_type = cmd_ctx->lsm->cmd_type;
 
        /* Copy common data */
        cmd_ctx->llm->cmd_type = cmd_ctx->lsm->cmd_type;
-       cmd_ctx->llm->pid = cmd_ctx->lsm->pid;
+       cmd_ctx->llm->pid = cmd_ctx->lsm->domain.attr.pid;
 
        cmd_ctx->llm->data_size = size;
        cmd_ctx->lttng_msg_size = sizeof(struct lttcomm_lttng_msg) + buf_size;
 
        cmd_ctx->llm->data_size = size;
        cmd_ctx->lttng_msg_size = sizeof(struct lttcomm_lttng_msg) + buf_size;
@@ -1124,7 +1124,7 @@ static struct lttng_channel *init_default_channel(char *name)
        }
 
        if (snprintf(chan->name, NAME_MAX, "%s", name) < 0) {
        }
 
        if (snprintf(chan->name, NAME_MAX, "%s", name) < 0) {
-               perror("snprintf defautl channel name");
+               perror("snprintf channel name");
                return NULL;
        }
 
                return NULL;
        }
 
@@ -1190,6 +1190,68 @@ static void list_lttng_sessions(struct lttng_session *sessions)
        }
 }
 
        }
 }
 
+/*
+ * Fill lttng_channel array of all channels.
+ */
+static void list_lttng_channels(struct ltt_session *session,
+               struct lttng_channel *channels)
+{
+       int i = 0;
+       struct ltt_kernel_channel *kchan;
+
+       DBG("Listing channels for session %s", session->name);
+
+       /* Kernel channels */
+       if (session->kernel_session != NULL) {
+               cds_list_for_each_entry(kchan, &session->kernel_session->channel_list.head, list) {
+                       /* Copy lttng_channel struct to array */
+                       memcpy(&channels[i], kchan->channel, sizeof(struct lttng_channel));
+                       channels[i].enabled = kchan->enabled;
+                       i++;
+               }
+       }
+
+       /* TODO: Missing UST listing */
+}
+
+/*
+ * Fill lttng_event array of all events in the channel.
+ */
+static void list_lttng_events(struct ltt_kernel_channel *kchan,
+               struct lttng_event *events)
+{
+       /*
+        * TODO: This is ONLY kernel. Need UST support.
+        */
+       int i = 0;
+       struct ltt_kernel_event *event;
+
+       DBG("Listing events for channel %s", kchan->channel->name);
+
+       /* Kernel channels */
+       cds_list_for_each_entry(event, &kchan->events_list.head , list) {
+               strncpy(events[i].name, event->event->name, LTTNG_SYMBOL_NAME_LEN);
+               events[i].enabled = event->enabled;
+               switch (event->event->instrumentation) {
+                       case LTTNG_KERNEL_TRACEPOINT:
+                               events[i].type = LTTNG_EVENT_TRACEPOINT;
+                               break;
+                       case LTTNG_KERNEL_KPROBE:
+                       case LTTNG_KERNEL_KRETPROBE:
+                               events[i].type = LTTNG_EVENT_PROBE;
+                               memcpy(&events[i].attr.probe, &event->event->u.kprobe,
+                                               sizeof(struct lttng_kernel_kprobe));
+                               break;
+                       case LTTNG_KERNEL_FUNCTION:
+                               events[i].type = LTTNG_EVENT_FUNCTION;
+                               memcpy(&events[i].attr.ftrace, &event->event->u.ftrace,
+                                               sizeof(struct lttng_kernel_function));
+                               break;
+               }
+               i++;
+       }
+}
+
 /*
  * Process the command requested by the lttng client within the command
  * context structure. This function make sure that the return structure (llm)
 /*
  * Process the command requested by the lttng client within the command
  * context structure. This function make sure that the return structure (llm)
@@ -1207,9 +1269,7 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
        switch (cmd_ctx->lsm->cmd_type) {
        case LTTNG_CREATE_SESSION:
        case LTTNG_LIST_SESSIONS:
        switch (cmd_ctx->lsm->cmd_type) {
        case LTTNG_CREATE_SESSION:
        case LTTNG_LIST_SESSIONS:
-       case LTTNG_LIST_EVENTS:
        case LTTNG_KERNEL_LIST_EVENTS:
        case LTTNG_KERNEL_LIST_EVENTS:
-       case LTTNG_LIST_TRACEABLE_APPS:
                break;
        default:
                DBG("Getting session %s by name", cmd_ctx->lsm->session_name);
                break;
        default:
                DBG("Getting session %s by name", cmd_ctx->lsm->session_name);
@@ -1570,11 +1630,11 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
        }
        case LTTNG_KERNEL_ENABLE_ALL_EVENT:
        {
        }
        case LTTNG_KERNEL_ENABLE_ALL_EVENT:
        {
-               int pos, size;
-               char *event_list, *event, *ptr, *channel_name;
+               int size, i;
+               char *channel_name;
                struct ltt_kernel_channel *kchan;
                struct ltt_kernel_event *ev;
                struct ltt_kernel_channel *kchan;
                struct ltt_kernel_event *ev;
-               struct lttng_event ev_attr;
+               struct lttng_event *event_list;
                struct lttng_channel *chan;
 
                /* Setup lttng message with no payload */
                struct lttng_channel *chan;
 
                /* Setup lttng message with no payload */
@@ -1624,23 +1684,17 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                        goto error;
                }
 
                        goto error;
                }
 
-               ptr = event_list;
-               while ((size = sscanf(ptr, "event { name = %m[^;]; };%n\n", &event, &pos)) == 1) {
-                       ev = get_kernel_event_by_name(event, kchan);
+               for (i = 0; i < size; i++) {
+                       ev = get_kernel_event_by_name(event_list[i].name, kchan);
                        if (ev == NULL) {
                        if (ev == NULL) {
-                               strncpy(ev_attr.name, event, LTTNG_SYM_NAME_LEN);
                                /* Default event type for enable all */
                                /* Default event type for enable all */
-                               ev_attr.type = LTTNG_EVENT_TRACEPOINT;
+                               event_list[i].type = LTTNG_EVENT_TRACEPOINT;
                                /* Enable each single tracepoint event */
                                /* Enable each single tracepoint event */
-                               ret = kernel_create_event(&ev_attr, kchan);
+                               ret = kernel_create_event(&event_list[i], kchan);
                                if (ret < 0) {
                                        /* Ignore error here and continue */
                                }
                        }
                                if (ret < 0) {
                                        /* Ignore error here and continue */
                                }
                        }
-
-                       /* Move pointer to the next line */
-                       ptr += pos + 1;
-                       free(event);
                }
 
                free(event_list);
                }
 
                free(event_list);
@@ -1652,12 +1706,12 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
        }
        case LTTNG_KERNEL_LIST_EVENTS:
        {
        }
        case LTTNG_KERNEL_LIST_EVENTS:
        {
-               char *event_list;
+               struct lttng_event *events;
                ssize_t size = 0;
 
                DBG("Listing kernel events");
 
                ssize_t size = 0;
 
                DBG("Listing kernel events");
 
-               size = kernel_list_events(kernel_tracer_fd, &event_list);
+               size = kernel_list_events(kernel_tracer_fd, &events);
                if (size < 0) {
                        ret = LTTCOMM_KERN_LIST_FAIL;
                        goto error;
                if (size < 0) {
                        ret = LTTCOMM_KERN_LIST_FAIL;
                        goto error;
@@ -1667,15 +1721,16 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                 * Setup lttng message with payload size set to the event list size in
                 * bytes and then copy list into the llm payload.
                 */
                 * Setup lttng message with payload size set to the event list size in
                 * bytes and then copy list into the llm payload.
                 */
-               ret = setup_lttng_msg(cmd_ctx, size);
+               ret = setup_lttng_msg(cmd_ctx, sizeof(struct lttng_event) * size);
                if (ret < 0) {
                        goto setup_error;
                }
 
                /* Copy event list into message payload */
                if (ret < 0) {
                        goto setup_error;
                }
 
                /* Copy event list into message payload */
-               memcpy(cmd_ctx->llm->payload, event_list, size);
+               memcpy(cmd_ctx->llm->payload, events,
+                               sizeof(struct lttng_event) * size);
 
 
-               free(event_list);
+               free(events);
 
                ret = LTTCOMM_OK;
                break;
 
                ret = LTTCOMM_OK;
                break;
@@ -1844,92 +1899,124 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                break;
        }
        /*
                break;
        }
        /*
-       case LTTNG_LIST_TRACES:
+       case UST_CREATE_TRACE:
        {
        {
-               unsigned int trace_count;
+               ret = setup_lttng_msg(cmd_ctx, 0);
+               if (ret < 0) {
+                       goto setup_error;
+               }
 
 
-               trace_count = get_trace_count_per_session(cmd_ctx->session);
-               if (trace_count == 0) {
-                       ret = LTTCOMM_NO_TRACE;
+               ret = ust_create_trace(cmd_ctx);
+               if (ret < 0) {
                        goto error;
                }
                        goto error;
                }
-
-               ret = setup_lttng_msg(cmd_ctx, sizeof(struct lttng_trace) * trace_count);
+               break;
+       }
+       case UST_START_TRACE:
+       {
+               ret = setup_lttng_msg(cmd_ctx, 0);
                if (ret < 0) {
                        goto setup_error;
                }
 
                if (ret < 0) {
                        goto setup_error;
                }
 
-               get_traces_per_session(cmd_ctx->session,
-                               (struct lttng_trace *)(cmd_ctx->llm->payload));
-
-               ret = LTTCOMM_OK;
+               ret = ust_start_trace(cmd_ctx);
+               if (ret < 0) {
+                       goto setup_error;
+               }
                break;
        }
                break;
        }
-       */
-       /*
-       case UST_CREATE_TRACE:
+       case UST_STOP_TRACE:
        {
                ret = setup_lttng_msg(cmd_ctx, 0);
                if (ret < 0) {
                        goto setup_error;
                }
 
        {
                ret = setup_lttng_msg(cmd_ctx, 0);
                if (ret < 0) {
                        goto setup_error;
                }
 
-               ret = ust_create_trace(cmd_ctx);
+               ret = ust_stop_trace(cmd_ctx);
                if (ret < 0) {
                if (ret < 0) {
-                       goto error;
+                       goto setup_error;
                }
                break;
        }
        */
                }
                break;
        }
        */
-       case LTTNG_LIST_TRACEABLE_APPS:
+       case LTTNG_LIST_DOMAINS:
        {
        {
-               unsigned int app_count;
+               size_t nb_dom;
 
 
-               app_count = get_app_count();
-               DBG("Traceable application count : %d", app_count);
-               if (app_count == 0) {
-                       ret = LTTCOMM_NO_APPS;
-                       goto error;
+               if (cmd_ctx->session->kernel_session != NULL) {
+                       nb_dom++;
                }
 
                }
 
-               ret = setup_lttng_msg(cmd_ctx, sizeof(pid_t) * app_count);
+               nb_dom += cmd_ctx->session->ust_trace_count;
+
+               ret = setup_lttng_msg(cmd_ctx, sizeof(struct lttng_domain) * nb_dom);
                if (ret < 0) {
                        goto setup_error;
                }
 
                if (ret < 0) {
                        goto setup_error;
                }
 
-               get_app_list_pids((pid_t *)(cmd_ctx->llm->payload));
+               ((struct lttng_domain *)(cmd_ctx->llm->payload))[0].type =
+                       LTTNG_DOMAIN_KERNEL;
 
 
+               /* TODO: User-space tracer domain support */
                ret = LTTCOMM_OK;
                break;
        }
                ret = LTTCOMM_OK;
                break;
        }
-       /*
-       case UST_START_TRACE:
+       case LTTNG_LIST_CHANNELS:
        {
        {
-               ret = setup_lttng_msg(cmd_ctx, 0);
-               if (ret < 0) {
-                       goto setup_error;
+               /*
+                * TODO: Only kernel channels are listed here. UST listing
+                * is needed on lttng-ust 2.0 release.
+                */
+               size_t nb_chan = 0;
+               if (cmd_ctx->session->kernel_session != NULL) {
+                       nb_chan += cmd_ctx->session->kernel_session->channel_count;
                }
 
                }
 
-               ret = ust_start_trace(cmd_ctx);
+               ret = setup_lttng_msg(cmd_ctx,
+                               sizeof(struct lttng_channel) * nb_chan);
                if (ret < 0) {
                        goto setup_error;
                }
                if (ret < 0) {
                        goto setup_error;
                }
+
+               list_lttng_channels(cmd_ctx->session,
+                               (struct lttng_channel *)(cmd_ctx->llm->payload));
+
+               ret = LTTCOMM_OK;
                break;
        }
                break;
        }
-       case UST_STOP_TRACE:
+       case LTTNG_LIST_EVENTS:
        {
        {
-               ret = setup_lttng_msg(cmd_ctx, 0);
-               if (ret < 0) {
-                       goto setup_error;
+               /*
+                * TODO: Only kernel events are listed here. UST listing
+                * is needed on lttng-ust 2.0 release.
+                */
+               size_t nb_event = 0;
+               struct ltt_kernel_channel *kchan = NULL;
+
+               if (cmd_ctx->session->kernel_session != NULL) {
+                       kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.list.channel_name,
+                                       cmd_ctx->session->kernel_session);
+                       if (kchan == NULL) {
+                               ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
+                               goto error;
+                       }
+                       nb_event += kchan->event_count;
                }
 
                }
 
-               ret = ust_stop_trace(cmd_ctx);
+               ret = setup_lttng_msg(cmd_ctx,
+                               sizeof(struct lttng_event) * nb_event);
                if (ret < 0) {
                        goto setup_error;
                }
                if (ret < 0) {
                        goto setup_error;
                }
+
+               DBG("Listing events (%ld events)", nb_event);
+
+               list_lttng_events(kchan,
+                               (struct lttng_event *)(cmd_ctx->llm->payload));
+
+               ret = LTTCOMM_OK;
                break;
        }
                break;
        }
-       */
        case LTTNG_LIST_SESSIONS:
        {
                lock_session_list();
        case LTTNG_LIST_SESSIONS:
        {
                lock_session_list();
index 0b4afa308047b3ce951b27c2519494b61f1bf269..bce40ff6c91596cb1c209003a06ef0bf339696c3 100644 (file)
@@ -17,6 +17,7 @@
  */
 
 #define _GNU_SOURCE
  */
 
 #define _GNU_SOURCE
+#include <inttypes.h>
 #include <popt.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <popt.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "../cmd.h"
 
 static int opt_pid;
 #include "../cmd.h"
 
 static int opt_pid;
-static int opt_channels;
+static int opt_userspace;
+static int opt_kernel;
+static char *opt_channel;
+static int opt_domain;
+
+const char *indent4 = "    ";
+const char *indent6 = "      ";
+const char *indent8 = "        ";
 
 enum {
        OPT_HELP = 1,
 
 enum {
        OPT_HELP = 1,
-       OPT_EVENTS,
-       OPT_KERNEL,
-       OPT_APPS,
-       OPT_SESSIONS,
-       OPT_CHANNEL,
 };
 
 static struct poptOption long_options[] = {
        /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
        {"help",      'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
 };
 
 static struct poptOption long_options[] = {
        /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
        {"help",      'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
-       {"events",    'e', POPT_ARG_NONE, 0, OPT_EVENTS, 0, 0},
-       {"kernel",    'k', POPT_ARG_NONE, 0, OPT_KERNEL, 0, 0},
-       {"pid",       'p', POPT_ARG_INT,  &opt_pid, 0, 0, 0},
-       {"apps",      'a', POPT_ARG_NONE, 0, OPT_APPS, 0, 0},
-       {"session",   's', POPT_ARG_NONE, 0, OPT_SESSIONS, 0, 0},
-       {"channel",   'c', POPT_ARG_VAL,  &opt_channels, 1, 0, 0},
+       {"kernel",    'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
+       {"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
+       {"pid",       'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
+       {"channel",   'c', POPT_ARG_STRING, &opt_channel, 0, 0, 0},
+       {"domain",    'd', POPT_ARG_VAL, &opt_domain, 1, 0, 0},
        {0, 0, 0, 0, 0, 0, 0}
 };
 
        {0, 0, 0, 0, 0, 0, 0}
 };
 
@@ -53,26 +55,31 @@ static struct poptOption long_options[] = {
  */
 static void usage(FILE *ofp)
 {
  */
 static void usage(FILE *ofp)
 {
-       fprintf(ofp, "usage: lttng list [options] [<executable>]\n");
+       fprintf(ofp, "usage: lttng list [[-k] [-u] [-p PID] [SESSION [<options>]]]\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "With no arguments, list available tracing session(s)\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "With -k alone, list available kernel events\n");
+       fprintf(ofp, "With -u alone, list available userspace events\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "  -h, --help              Show this help\n");
+       fprintf(ofp, "  -k, --kernel            Select kernel domain\n");
+       fprintf(ofp, "  -u, --userspace         Select user-space domain.\n");
+       fprintf(ofp, "  -p, --pid PID           List user-space events by PID\n");
        fprintf(ofp, "\n");
        fprintf(ofp, "\n");
-       fprintf(ofp, "  -h, --help         Show this help\n");
-       fprintf(ofp, "  -e, --events       List all available instrumentation\n");
-       fprintf(ofp, "  -k, --kernel       List kernel instrumentation\n");
-       fprintf(ofp, "  -p, --pid PID      List user-space instrumentation by PID\n");
-       fprintf(ofp, "  -a, --apps         List traceable user-space applications/pids\n");
-       fprintf(ofp, "  -s, --sessions     List tracing session\n");
+       fprintf(ofp, "Options:\n");
+       fprintf(ofp, "  -c, --channel NAME      List details of a channel\n");
+       fprintf(ofp, "  -d, --domain            List available domain(s)\n");
        fprintf(ofp, "\n");
 }
 
 /*
        fprintf(ofp, "\n");
 }
 
 /*
- *  get_cmdline_by_pid
+ * Get command line from /proc for a specific pid.
  *
  *
- *  Get command line from /proc for a specific pid.
- *
- *  On success, return an allocated string pointer pointing to the proc
- *  cmdline.
- *  On error, return NULL.
+ * On success, return an allocated string pointer to the proc cmdline.
+ * On error, return NULL.
  */
  */
+#ifdef DISABLE
 static char *get_cmdline_by_pid(pid_t pid)
 {
        int ret;
 static char *get_cmdline_by_pid(pid_t pid)
 {
        int ret;
@@ -97,36 +104,28 @@ static char *get_cmdline_by_pid(pid_t pid)
 end:
        return cmdline;
 }
 end:
        return cmdline;
 }
+#endif /* DISABLE */
 
 /*
 
 /*
- *  list_kernel
- *
- *  Ask for all trace events in the kernel and pretty print them.
+ * Ask for all trace events in the kernel and pretty print them.
  */
  */
-static int list_kernel(void)
+static int list_kernel_events(void)
 {
 {
-       int ret, pos, size;
-       char *event_list, *event, *ptr;
-       struct lttng_domain dom;
+       int i, size;
+       struct lttng_event *event_list;
 
        DBG("Getting all tracing events");
 
 
        DBG("Getting all tracing events");
 
-       dom.type = LTTNG_DOMAIN_KERNEL;
-
-       ret = lttng_list_events(&dom, &event_list);
-       if (ret < 0) {
-               ERR("Unable to list kernel instrumentation");
-               return ret;
+       size = lttng_list_kernel_events(&event_list);
+       if (size < 0) {
+               ERR("Unable to list kernel events");
+               return size;
        }
 
        }
 
-       MSG("Kernel tracepoints:\n-------------");
+       MSG("Kernel events:\n-------------");
 
 
-       ptr = event_list;
-       while ((size = sscanf(ptr, "event { name = %m[^;]; };%n\n", &event, &pos)) == 1) {
-               MSG("    - %s", event);
-               /* Move pointer to the next line */
-               ptr += pos + 1;
-               free(event);
+       for (i = 0; i < size; i++) {
+               MSG("  %s", event_list[i].name);
        }
 
        free(event_list);
        }
 
        free(event_list);
@@ -135,114 +134,248 @@ static int list_kernel(void)
 }
 
 /*
 }
 
 /*
- *  list_sessions
- *
- *  Get the list of available sessions from the session daemon and print it to
- *  user.
+ * List events of channel of session and domain.
  */
  */
-static int list_sessions(void)
+static int list_events(struct lttng_domain *dom,
+               const char *session_name, const char *channel_name)
 {
        int ret, count, i;
 {
        int ret, count, i;
-       struct lttng_session *sessions;
+       struct lttng_event *events = NULL;
 
 
-       count = lttng_list_sessions(&sessions);
-       DBG("Session count %d", count);
+       count = lttng_list_events(dom, session_name, channel_name, &events);
        if (count < 0) {
                ret = count;
                goto error;
        }
 
        if (count < 0) {
                ret = count;
                goto error;
        }
 
-       MSG("Available sessions:");
+       MSG("\n%sEvents:", indent4);
+       if (count == 0) {
+               MSG("%sNone", indent6);
+               goto end;
+       }
+
        for (i = 0; i < count; i++) {
        for (i = 0; i < count; i++) {
-               MSG("    %d) %s (%s)", i+1, sessions[i].name, sessions[i].path);
+               switch (events[i].type) {
+                       case LTTNG_EVENT_TRACEPOINT:
+                               MSG("%s%s (type: tracepoint) [enabled: %d]", indent6,
+                                               events[i].name, events[i].enabled);
+                               break;
+                       case LTTNG_EVENT_PROBE:
+                               MSG("%s%s (type: probe) [enabled: %d]", indent6,
+                                               events[i].name, events[i].enabled);
+                               if (events[i].attr.probe.addr != 0) {
+                                       MSG("%saddr: 0x%" PRIx64, indent8, events[i].attr.probe.addr);
+                               } else {
+                                       MSG("%soffset: 0x%" PRIx64, indent8, events[i].attr.probe.offset);
+                                       MSG("%ssymbol: %s", indent8, events[i].attr.probe.symbol_name);
+                               }
+                               break;
+                       case LTTNG_EVENT_FUNCTION:
+                       case LTTNG_EVENT_FUNCTION_ENTRY:
+                               MSG("%s%s (type: function) [enabled: %d]", indent6,
+                                               events[i].name, events[i].enabled);
+                               MSG("%ssymbol: \"%s\"", indent8, events[i].attr.ftrace.symbol_name);
+                               break;
+               }
        }
 
        }
 
-       free(sessions);
+       MSG("");
 
 
-       return CMD_SUCCESS;
+end:
+       if (events) {
+               free(events);
+       }
+       ret = CMD_SUCCESS;
 
 error:
        return ret;
 }
 
 /*
 
 error:
        return ret;
 }
 
 /*
- *  list_apps
+ * Pretty print channel
+ */
+static void print_channel(struct lttng_channel *channel)
+{
+       MSG("- %s (enabled: %d):\n", channel->name, channel->enabled);
+
+       MSG("%sAttributes:", indent4);
+       MSG("%soverwrite mode: %d", indent6, channel->attr.overwrite);
+       MSG("%ssubbufers size: %" PRIu64, indent6, channel->attr.subbuf_size);
+       MSG("%snumber of subbufers: %" PRIu64, indent6, channel->attr.num_subbuf);
+       MSG("%sswitch timer interval: %u", indent6, channel->attr.switch_timer_interval);
+       MSG("%sread timer interval: %u", indent6, channel->attr.read_timer_interval);
+       switch (channel->attr.output) {
+               case LTTNG_EVENT_SPLICE:
+                       MSG("%soutput: splice()", indent6);
+                       break;
+               case LTTNG_EVENT_MMAP:
+                       MSG("%soutput: mmap()", indent6);
+                       break;
+       }
+}
+
+/*
+ * List channel(s) of session and domain.
  *
  *
- *  Get the UST traceable pid list and print them to the user.
+ * If channel_name is NULL, all channels are listed.
  */
  */
-static int list_apps(void)
+static int list_channels(struct lttng_domain *dom,
+               const char *session_name, const char *channel_name)
 {
 {
-       int i, ret, count;
-       pid_t *pids;
-       char *cmdline;
+       int count, i, ret = CMD_SUCCESS;
+       unsigned int chan_found = 0;
+       struct lttng_channel *channels = NULL;
 
 
-       count = -1;
-       //count = lttng_ust_list_traceable_apps(&pids);
+       DBG("Listing channel(s) (%s)", channel_name);
+
+       count = lttng_list_channels(dom, session_name, &channels);
        if (count < 0) {
                ret = count;
                goto error;
        if (count < 0) {
                ret = count;
                goto error;
+       } else if (count == 0) {
+               MSG("No channel found");
+               goto end;
        }
 
        }
 
-       MSG("LTTng UST traceable application [name (pid)]:");
-       for (i=0; i < count; i++) {
-               cmdline = get_cmdline_by_pid(pids[i]);
-               if (cmdline == NULL) {
-                       MSG("\t(not running) (%d)", pids[i]);
-                       continue;
+       if (channel_name == NULL) {
+               MSG("Channels:\n-------------");
+       }
+
+       for (i = 0; i < count; i++) {
+               if (channel_name != NULL) {
+                       if (strncmp(channels[i].name, channel_name, NAME_MAX) == 0) {
+                               chan_found = 1;
+                       } else {
+                               continue;
+                       }
+               }
+               print_channel(&channels[i]);
+
+               /* Listing events per channel */
+               ret = list_events(dom, session_name, channels[i].name);
+               if (ret < 0) {
+                       MSG("%s", lttng_get_readable_code(ret));
+               }
+
+               if (chan_found) {
+                       break;
                }
                }
-               MSG("\t%s (%d)", cmdline, pids[i]);
-               free(cmdline);
        }
 
        }
 
-       /* Allocated by lttng_ust_list_apps() */
-       free(pids);
+       if (!chan_found && channel_name != NULL) {
+               MSG("Channel %s not found", channel_name);
+       }
 
 
-       return CMD_SUCCESS;
+end:
+       free(channels);
+       ret = CMD_SUCCESS;
 
 error:
        return ret;
 }
 
 /*
 
 error:
        return ret;
 }
 
 /*
- *  list_pid
+ * List available tracing session. List only basic information.
  *
  *
- *  List all instrumentation for a specific pid
+ * If session_name is NULL, all sessions are listed.
  */
  */
-/*
-static int list_pid(int pid)
+static int list_sessions(const char *session_name)
 {
 {
-       int ret;
+       int ret, count, i;
+       unsigned int session_found = 0;
+       struct lttng_session *sessions;
+
+       count = lttng_list_sessions(&sessions);
+       DBG("Session count %d", count);
+       if (count < 0) {
+               ret = count;
+               goto error;
+       }
+
+       if (session_name == NULL) {
+               MSG("Available tracing sessions:");
+       }
+
+       for (i = 0; i < count; i++) {
+               if (session_name != NULL) {
+                       if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) {
+                               session_found = 1;
+                               MSG("Tracing session %s:", session_name);
+                               MSG("%sTrace path: %s\n", indent4, sessions[i].path);
+                               break;
+                       }
+               }
+
+               MSG("  %d) %s (%s)", i + 1, sessions[i].name, sessions[i].path);
+
+               if (session_found) {
+                       break;
+               }
+       }
+
+       free(sessions);
+
+       if (!session_found && session_name != NULL) {
+               MSG("Session %s not found", session_name);
+       }
+
+       if (session_name == NULL) {
+               MSG("\nUse lttng list -s <session_name> for a detail listing");
+       }
 
        return CMD_SUCCESS;
 
 error:
        return ret;
 }
 
        return CMD_SUCCESS;
 
 error:
        return ret;
 }
-*/
 
 /*
 
 /*
- *  list_executable
- *
- *  List all instrumentation for an executable on the system
+ * List available domain(s) for a session.
  */
  */
-/*
-static int list_executable(char *name)
+static int list_domains(const char *session_name)
 {
 {
+       int i, count, ret = CMD_SUCCESS;
+       struct lttng_domain *domains = NULL;
+
+       MSG("Domains:\n-------------");
+
+       count = lttng_list_domains(session_name, &domains);
+       if (count < 0) {
+               ret = count;
+               goto error;
+       } else if (count == 0) {
+               MSG("  None");
+               goto end;
+       }
+
+       for (i = 0; i < count; i++) {
+               switch (domains[i].type) {
+               case LTTNG_DOMAIN_KERNEL:
+                       MSG("  - Kernel");
+               default:
+                       break;
+               }
+       }
+
+end:
+       free(domains);
+
+error:
+       return ret;
 }
 }
-*/
 
 /*
 
 /*
- *  cmd_list
- *
- *  The 'list <options>' first level command
+ * The 'list <options>' first level command
  */
 int cmd_list(int argc, const char **argv)
 {
  */
 int cmd_list(int argc, const char **argv)
 {
-       int opt, ret = CMD_SUCCESS;
-       const char *command_name;
+       int opt, i, ret = CMD_SUCCESS;
+       const char *session_name;
        static poptContext pc;
        static poptContext pc;
+       struct lttng_domain domain;
+       struct lttng_domain *domains = NULL;
 
 
-       if (argc < 2) {
+       if (argc < 1) {
                usage(stderr);
                goto end;
        }
                usage(stderr);
                goto end;
        }
@@ -255,18 +388,6 @@ int cmd_list(int argc, const char **argv)
                case OPT_HELP:
                        usage(stderr);
                        goto end;
                case OPT_HELP:
                        usage(stderr);
                        goto end;
-               case OPT_EVENTS:
-                       ret = CMD_NOT_IMPLEMENTED;
-                       goto end;
-               case OPT_APPS:
-                       ret = list_apps();
-                       break;
-               case OPT_KERNEL:
-                       ret = list_kernel();
-                       break;
-               case OPT_SESSIONS:
-                       ret = list_sessions();
-                       break;
                default:
                        usage(stderr);
                        ret = CMD_UNDEFINED;
                default:
                        usage(stderr);
                        ret = CMD_UNDEFINED;
@@ -274,17 +395,76 @@ int cmd_list(int argc, const char **argv)
                }
        }
 
                }
        }
 
-       if (opt_pid != 0) {
-               //ret = list_pid(pid);
-               ret = CMD_NOT_IMPLEMENTED;
+       if (opt_userspace || opt_pid != 0) {
+               MSG("*** Userspace tracing not implemented ***\n");
        }
 
        }
 
-       command_name = poptGetArg(pc);
-       if (command_name != NULL) {
-               // ret = list_executable(command_name);
-               ret = CMD_NOT_IMPLEMENTED;
+       /* Get session name (trailing argument) */
+       session_name = poptGetArg(pc);
+       DBG("Session name: %s", session_name);
+
+       if (session_name == NULL) {
+               if (opt_kernel) {
+                       ret = list_kernel_events();
+                       if (ret < 0) {
+                               goto end;
+                       }
+               } else {
+                       ret = list_sessions(NULL);
+                       if (ret < 0) {
+                               goto end;
+                       }
+               }
+       } else {
+               /* List session attributes */
+               ret = list_sessions(session_name);
+               if (ret < 0) {
+                       goto end;
+               }
+
+               /* Domain listing */
+               if (opt_domain) {
+                       ret = list_domains(session_name);
+                       goto end;
+               }
+
+               if (opt_kernel) {
+                       domain.type = LTTNG_DOMAIN_KERNEL;
+                       /* Channel listing */
+                       ret = list_channels(&domain, session_name, opt_channel);
+                       if (ret < 0) {
+                               goto end;
+                       }
+               } else if (opt_userspace) {
+                       /* TODO: Userspace domain */
+               } else {
+                       /* We want all domain(s) */
+                       ret = lttng_list_domains(session_name, &domains);
+                       if (ret < 0) {
+                               goto end;
+                       }
+
+                       for (i = 0; i < ret; i++) {
+                               switch (domains[i].type) {
+                               case LTTNG_DOMAIN_KERNEL:
+                                       MSG("=== Domain: Kernel ===\n");
+                                       break;
+                               default:
+                                       MSG("=== Domain: Unimplemented ===\n");
+                                       break;
+                               }
+
+                               ret = list_channels(&domains[i], session_name, opt_channel);
+                               if (ret < 0) {
+                                       goto end;
+                               }
+                       }
+               }
        }
 
 end:
        }
 
 end:
+       if (domains) {
+               free(domains);
+       }
        return ret;
 }
        return ret;
 }
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