*/
#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
#include <common/sessiond-comm/sessiond-comm.h>
#include "channel.h"
+#include "lttng-sessiond.h"
#include "kernel.h"
#include "ust-ctl.h"
#include "utils.h"
chan->attr.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
chan->attr.switch_timer_interval = DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER;
chan->attr.read_timer_interval = DEFAULT_KERNEL_CHANNEL_READ_TIMER;
+ chan->attr.live_timer_interval = DEFAULT_KERNEL_CHANNEL_LIVE_TIMER;
break;
case LTTNG_DOMAIN_UST:
switch (type) {
DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER;
chan->attr.read_timer_interval =
DEFAULT_UST_UID_CHANNEL_READ_TIMER;
+ chan->attr.live_timer_interval =
+ DEFAULT_UST_UID_CHANNEL_LIVE_TIMER;
break;
case LTTNG_BUFFER_PER_PID:
default:
DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER;
chan->attr.read_timer_interval =
DEFAULT_UST_PID_CHANNEL_READ_TIMER;
+ chan->attr.live_timer_interval =
+ DEFAULT_UST_UID_CHANNEL_LIVE_TIMER;
break;
}
break;
attr = defattr;
}
+ if (ksession->snapshot_mode) {
+ /* Force channel attribute for snapshot mode. */
+ attr->attr.overwrite = 1;
+ attr->attr.output = LTTNG_EVENT_MMAP;
+ }
+
/* Channel not found, creating it */
ret = kernel_create_channel(ksession, attr);
if (ret < 0) {
attr = defattr;
}
+ if (usess->snapshot_mode) {
+ /* Force channel attribute for snapshot mode. */
+ attr->attr.overwrite = 1;
+ attr->attr.output = LTTNG_EVENT_MMAP;
+ }
+
/*
* Validate UST buffer size and number of buffers: must both be power of 2
* and nonzero. We validate right here for UST, because applications will
goto error;
}
+ /*
+ * Invalid subbuffer size if it's lower then the page size.
+ */
+ if (attr->attr.subbuf_size < page_size) {
+ ret = LTTNG_ERR_INVALID;
+ goto error;
+ }
+
if (!attr->attr.num_subbuf ||
(attr->attr.num_subbuf & (attr->attr.num_subbuf - 1))) {
ret = LTTNG_ERR_INVALID;
/* Validate buffer type. */
switch (type) {
case LTTNG_BUFFER_PER_PID:
- if (attr->attr.subbuf_size <
- default_get_ust_pid_channel_subbuf_size()) {
- ret = LTTNG_ERR_INVALID;
- goto error;
- }
break;
case LTTNG_BUFFER_PER_UID:
- if (attr->attr.subbuf_size <
- default_get_ust_uid_channel_subbuf_size()) {
- ret = LTTNG_ERR_INVALID;
- goto error;
- }
break;
default:
ret = LTTNG_ERR_BUFFER_NOT_SUPPORTED;
/* Adding the channel to the channel hash table. */
rcu_read_lock();
- lttng_ht_add_unique_str(usess->domain_global.channels, &uchan->node);
+ if (strncmp(uchan->name, DEFAULT_METADATA_NAME,
+ sizeof(uchan->name))) {
+ lttng_ht_add_unique_str(usess->domain_global.channels, &uchan->node);
+ } else {
+ /*
+ * Copy channel attribute to session if this is metadata so if NO
+ * application exists we can access that data in the shadow copy during
+ * the global update of newly registered application.
+ */
+ memcpy(&usess->metadata_attr, &uchan->attr,
+ sizeof(usess->metadata_attr));
+ }
rcu_read_unlock();
DBG2("Channel %s created successfully", uchan->name);