--- /dev/null
+#ifndef _LTTNG_ABI_OLD_H
+#define _LTTNG_ABI_OLD_H
+
+/*
+ * lttng-abi-old.h
+ *
+ * LTTng old ABI header (without support for compat 32/64 bits)
+ *
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/fs.h>
+#include "lttng-abi.h"
+
+/*
+ * LTTng DebugFS ABI structures.
+ */
+#define LTTNG_KERNEL_OLD_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
+struct lttng_kernel_old_channel {
+ int overwrite; /* 1: overwrite, 0: discard */
+ uint64_t subbuf_size; /* in bytes */
+ uint64_t num_subbuf;
+ unsigned int switch_timer_interval; /* usecs */
+ unsigned int read_timer_interval; /* usecs */
+ enum lttng_kernel_output output; /* splice, mmap */
+ char padding[LTTNG_KERNEL_OLD_CHANNEL_PADDING];
+};
+
+struct lttng_kernel_old_kretprobe {
+ uint64_t addr;
+
+ uint64_t offset;
+ char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
+};
+
+/*
+ * Either addr is used, or symbol_name and offset.
+ */
+struct lttng_kernel_old_kprobe {
+ uint64_t addr;
+
+ uint64_t offset;
+ char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
+};
+
+struct lttng_kernel_old_function_tracer {
+ char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
+};
+
+/*
+ * For syscall tracing, name = '\0' means "enable all".
+ */
+#define LTTNG_KERNEL_OLD_EVENT_PADDING1 16
+#define LTTNG_KERNEL_OLD_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
+struct lttng_kernel_old_event {
+ char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
+ enum lttng_kernel_instrumentation instrumentation;
+ char padding[LTTNG_KERNEL_OLD_EVENT_PADDING1];
+
+ /* Per instrumentation type configuration */
+ union {
+ struct lttng_kernel_old_kretprobe kretprobe;
+ struct lttng_kernel_old_kprobe kprobe;
+ struct lttng_kernel_old_function_tracer ftrace;
+ char padding[LTTNG_KERNEL_OLD_EVENT_PADDING2];
+ } u;
+};
+
+struct lttng_kernel_old_tracer_version {
+ uint32_t major;
+ uint32_t minor;
+ uint32_t patchlevel;
+};
+
+struct lttng_kernel_old_calibrate {
+ enum lttng_kernel_calibrate_type type; /* type (input) */
+};
+
+struct lttng_kernel_old_perf_counter_ctx {
+ uint32_t type;
+ uint64_t config;
+ char name[LTTNG_KERNEL_SYM_NAME_LEN];
+};
+
+#define LTTNG_KERNEL_OLD_CONTEXT_PADDING1 16
+#define LTTNG_KERNEL_OLD_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
+struct lttng_kernel_old_context {
+ enum lttng_kernel_context_type ctx;
+ char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING1];
+
+ union {
+ struct lttng_kernel_old_perf_counter_ctx perf_counter;
+ char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING2];
+ } u;
+};
+
+/* LTTng file descriptor ioctl */
+#define LTTNG_KERNEL_OLD_SESSION _IO(0xF6, 0x40)
+#define LTTNG_KERNEL_OLD_TRACER_VERSION \
+ _IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
+#define LTTNG_KERNEL_OLD_TRACEPOINT_LIST _IO(0xF6, 0x42)
+#define LTTNG_KERNEL_OLD_WAIT_QUIESCENT _IO(0xF6, 0x43)
+#define LTTNG_KERNEL_OLD_CALIBRATE \
+ _IOWR(0xF6, 0x44, struct lttng_kernel_old_calibrate)
+
+/* Session FD ioctl */
+#define LTTNG_KERNEL_OLD_METADATA \
+ _IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
+#define LTTNG_KERNEL_OLD_CHANNEL \
+ _IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
+#define LTTNG_KERNEL_OLD_SESSION_START _IO(0xF6, 0x52)
+#define LTTNG_KERNEL_OLD_SESSION_STOP _IO(0xF6, 0x53)
+
+/* Channel FD ioctl */
+#define LTTNG_KERNEL_OLD_STREAM _IO(0xF6, 0x60)
+#define LTTNG_KERNEL_OLD_EVENT \
+ _IOW(0xF6, 0x61, struct lttng_kernel_old_event)
+
+/* Event and Channel FD ioctl */
+#define LTTNG_KERNEL_OLD_CONTEXT \
+ _IOW(0xF6, 0x70, struct lttng_kernel_old_context)
+
+/* Event, Channel and Session ioctl */
+#define LTTNG_KERNEL_OLD_ENABLE _IO(0xF6, 0x80)
+#define LTTNG_KERNEL_OLD_DISABLE _IO(0xF6, 0x81)
+
+#endif /* _LTTNG_ABI_OLD_H */
#include "wrapper/ringbuffer/vfs.h"
#include "wrapper/poll.h"
#include "lttng-abi.h"
+#include "lttng-abi-old.h"
#include "lttng-events.h"
#include "lttng-tracer.h"
}
static
-long lttng_abi_tracer_version(struct file *file,
- struct lttng_kernel_tracer_version __user *uversion_param)
+void lttng_abi_tracer_version(struct lttng_kernel_tracer_version *v)
{
- struct lttng_kernel_tracer_version v;
-
- v.major = LTTNG_MODULES_MAJOR_VERSION;
- v.minor = LTTNG_MODULES_MINOR_VERSION;
- v.patchlevel = LTTNG_MODULES_PATCHLEVEL_VERSION;
-
- if (copy_to_user(uversion_param, &v, sizeof(v)))
- return -EFAULT;
- return 0;
+ v->major = LTTNG_MODULES_MAJOR_VERSION;
+ v->minor = LTTNG_MODULES_MINOR_VERSION;
+ v->patchlevel = LTTNG_MODULES_PATCHLEVEL_VERSION;
}
static
long lttng_abi_add_context(struct file *file,
- struct lttng_kernel_context __user *ucontext_param,
+ struct lttng_kernel_context *context_param,
struct lttng_ctx **ctx, struct lttng_session *session)
{
- struct lttng_kernel_context context_param;
if (session->been_active)
return -EPERM;
- if (copy_from_user(&context_param, ucontext_param, sizeof(context_param)))
- return -EFAULT;
-
- switch (context_param.ctx) {
+ switch (context_param->ctx) {
case LTTNG_KERNEL_CONTEXT_PID:
return lttng_add_pid_to_ctx(ctx);
case LTTNG_KERNEL_CONTEXT_PRIO:
case LTTNG_KERNEL_CONTEXT_VPPID:
return lttng_add_vppid_to_ctx(ctx);
case LTTNG_KERNEL_CONTEXT_PERF_COUNTER:
- context_param.u.perf_counter.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- return lttng_add_perf_counter_to_ctx(context_param.u.perf_counter.type,
- context_param.u.perf_counter.config,
- context_param.u.perf_counter.name,
+ context_param->u.perf_counter.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+ return lttng_add_perf_counter_to_ctx(context_param->u.perf_counter.type,
+ context_param->u.perf_counter.config,
+ context_param->u.perf_counter.name,
ctx);
case LTTNG_KERNEL_CONTEXT_PROCNAME:
return lttng_add_procname_to_ctx(ctx);
long lttng_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
+ case LTTNG_KERNEL_OLD_SESSION:
case LTTNG_KERNEL_SESSION:
return lttng_abi_create_session();
+ case LTTNG_KERNEL_OLD_TRACER_VERSION:
+ {
+ struct lttng_kernel_tracer_version v;
+ struct lttng_kernel_old_tracer_version oldv;
+ struct lttng_kernel_old_tracer_version *uversion =
+ (struct lttng_kernel_old_tracer_version __user *) arg;
+
+ lttng_abi_tracer_version(&v);
+ oldv.major = v.major;
+ oldv.minor = v.minor;
+ oldv.patchlevel = v.patchlevel;
+
+ if (copy_to_user(uversion, &oldv, sizeof(oldv)))
+ return -EFAULT;
+ return 0;
+ }
case LTTNG_KERNEL_TRACER_VERSION:
- return lttng_abi_tracer_version(file,
- (struct lttng_kernel_tracer_version __user *) arg);
+ {
+ struct lttng_kernel_tracer_version version;
+ struct lttng_kernel_tracer_version *uversion =
+ (struct lttng_kernel_tracer_version __user *) arg;
+
+ lttng_abi_tracer_version(&version);
+
+ if (copy_to_user(uversion, &version, sizeof(version)))
+ return -EFAULT;
+ return 0;
+ }
+ case LTTNG_KERNEL_OLD_TRACEPOINT_LIST:
case LTTNG_KERNEL_TRACEPOINT_LIST:
return lttng_abi_tracepoint_list();
+ case LTTNG_KERNEL_OLD_WAIT_QUIESCENT:
case LTTNG_KERNEL_WAIT_QUIESCENT:
synchronize_trace();
return 0;
+ case LTTNG_KERNEL_OLD_CALIBRATE:
+ {
+ struct lttng_kernel_old_calibrate __user *ucalibrate =
+ (struct lttng_kernel_old_calibrate __user *) arg;
+ struct lttng_kernel_old_calibrate old_calibrate;
+ struct lttng_kernel_calibrate calibrate;
+ int ret;
+
+ if (copy_from_user(&old_calibrate, ucalibrate, sizeof(old_calibrate)))
+ return -EFAULT;
+ calibrate.type = old_calibrate.type;
+ ret = lttng_calibrate(&calibrate);
+ if (copy_to_user(ucalibrate, &old_calibrate, sizeof(old_calibrate)))
+ return -EFAULT;
+ return ret;
+ }
case LTTNG_KERNEL_CALIBRATE:
{
struct lttng_kernel_calibrate __user *ucalibrate =
static
int lttng_abi_create_channel(struct file *session_file,
- struct lttng_kernel_channel __user *uchan_param,
+ struct lttng_kernel_channel *chan_param,
enum channel_type channel_type)
{
struct lttng_session *session = session_file->private_data;
const char *transport_name;
struct lttng_channel *chan;
struct file *chan_file;
- struct lttng_kernel_channel chan_param;
int chan_fd;
int ret = 0;
- if (copy_from_user(&chan_param, uchan_param, sizeof(chan_param)))
- return -EFAULT;
chan_fd = get_unused_fd();
if (chan_fd < 0) {
ret = chan_fd;
}
switch (channel_type) {
case PER_CPU_CHANNEL:
- if (chan_param.output == LTTNG_KERNEL_SPLICE) {
- transport_name = chan_param.overwrite ?
+ if (chan_param->output == LTTNG_KERNEL_SPLICE) {
+ transport_name = chan_param->overwrite ?
"relay-overwrite" : "relay-discard";
- } else if (chan_param.output == LTTNG_KERNEL_MMAP) {
- transport_name = chan_param.overwrite ?
+ } else if (chan_param->output == LTTNG_KERNEL_MMAP) {
+ transport_name = chan_param->overwrite ?
"relay-overwrite-mmap" : "relay-discard-mmap";
} else {
return -EINVAL;
}
break;
case METADATA_CHANNEL:
- if (chan_param.output == LTTNG_KERNEL_SPLICE)
+ if (chan_param->output == LTTNG_KERNEL_SPLICE)
transport_name = "relay-metadata";
- else if (chan_param.output == LTTNG_KERNEL_MMAP)
+ else if (chan_param->output == LTTNG_KERNEL_MMAP)
transport_name = "relay-metadata-mmap";
else
return -EINVAL;
* invariant for the rest of the session.
*/
chan = lttng_channel_create(session, transport_name, NULL,
- chan_param.subbuf_size,
- chan_param.num_subbuf,
- chan_param.switch_timer_interval,
- chan_param.read_timer_interval);
+ chan_param->subbuf_size,
+ chan_param->num_subbuf,
+ chan_param->switch_timer_interval,
+ chan_param->read_timer_interval);
if (!chan) {
ret = -EINVAL;
goto chan_error;
struct lttng_session *session = file->private_data;
switch (cmd) {
+ case LTTNG_KERNEL_OLD_CHANNEL:
+ {
+ struct lttng_kernel_channel chan_param;
+ struct lttng_kernel_old_channel old_chan_param;
+
+ if (copy_from_user(&old_chan_param,
+ (struct lttng_kernel_old_channel __user *) arg,
+ sizeof(struct lttng_kernel_old_channel)))
+ return -EFAULT;
+ chan_param.overwrite = old_chan_param.overwrite;
+ chan_param.subbuf_size = old_chan_param.subbuf_size;
+ chan_param.num_subbuf = old_chan_param.num_subbuf;
+ chan_param.switch_timer_interval = old_chan_param.switch_timer_interval;
+ chan_param.read_timer_interval = old_chan_param.read_timer_interval;
+ chan_param.output = old_chan_param.output;
+
+ return lttng_abi_create_channel(file, &chan_param,
+ PER_CPU_CHANNEL);
+ }
case LTTNG_KERNEL_CHANNEL:
- return lttng_abi_create_channel(file,
+ {
+ struct lttng_kernel_channel chan_param;
+
+ if (copy_from_user(&chan_param,
(struct lttng_kernel_channel __user *) arg,
+ sizeof(struct lttng_kernel_channel)))
+ return -EFAULT;
+ return lttng_abi_create_channel(file, &chan_param,
PER_CPU_CHANNEL);
+ }
+ case LTTNG_KERNEL_OLD_SESSION_START:
+ case LTTNG_KERNEL_OLD_ENABLE:
case LTTNG_KERNEL_SESSION_START:
case LTTNG_KERNEL_ENABLE:
return lttng_session_enable(session);
+ case LTTNG_KERNEL_OLD_SESSION_STOP:
+ case LTTNG_KERNEL_OLD_DISABLE:
case LTTNG_KERNEL_SESSION_STOP:
case LTTNG_KERNEL_DISABLE:
return lttng_session_disable(session);
+ case LTTNG_KERNEL_OLD_METADATA:
+ {
+ struct lttng_kernel_channel chan_param;
+ struct lttng_kernel_old_channel old_chan_param;
+
+ if (copy_from_user(&old_chan_param,
+ (struct lttng_kernel_old_channel __user *) arg,
+ sizeof(struct lttng_kernel_old_channel)))
+ return -EFAULT;
+ chan_param.overwrite = old_chan_param.overwrite;
+ chan_param.subbuf_size = old_chan_param.subbuf_size;
+ chan_param.num_subbuf = old_chan_param.num_subbuf;
+ chan_param.switch_timer_interval = old_chan_param.switch_timer_interval;
+ chan_param.read_timer_interval = old_chan_param.read_timer_interval;
+ chan_param.output = old_chan_param.output;
+
+ return lttng_abi_create_channel(file, &chan_param,
+ METADATA_CHANNEL);
+ }
case LTTNG_KERNEL_METADATA:
- return lttng_abi_create_channel(file,
- (struct lttng_kernel_channel __user *) arg,
+ {
+ struct lttng_kernel_channel chan_param;
+
+ if (copy_from_user(&chan_param,
+ (struct lttng_kernel_channel __user *) arg,
+ sizeof(struct lttng_kernel_channel)))
+ return -EFAULT;
+ return lttng_abi_create_channel(file, &chan_param,
METADATA_CHANNEL);
+ }
default:
return -ENOIOCTLCMD;
}
static
int lttng_abi_create_event(struct file *channel_file,
- struct lttng_kernel_event __user *uevent_param)
+ struct lttng_kernel_event *event_param)
{
struct lttng_channel *channel = channel_file->private_data;
struct lttng_event *event;
- struct lttng_kernel_event event_param;
int event_fd, ret;
struct file *event_file;
- if (copy_from_user(&event_param, uevent_param, sizeof(event_param)))
- return -EFAULT;
- event_param.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- switch (event_param.instrumentation) {
+ event_param->name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+ switch (event_param->instrumentation) {
case LTTNG_KERNEL_KRETPROBE:
- event_param.u.kretprobe.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+ event_param->u.kretprobe.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
break;
case LTTNG_KERNEL_KPROBE:
- event_param.u.kprobe.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+ event_param->u.kprobe.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
break;
case LTTNG_KERNEL_FUNCTION:
- event_param.u.ftrace.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+ event_param->u.ftrace.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
break;
default:
break;
}
- switch (event_param.instrumentation) {
+ switch (event_param->instrumentation) {
default:
event_fd = get_unused_fd();
if (event_fd < 0) {
* We tolerate no failure path after event creation. It
* will stay invariant for the rest of the session.
*/
- event = lttng_event_create(channel, &event_param, NULL, NULL);
+ event = lttng_event_create(channel, event_param, NULL, NULL);
if (!event) {
ret = -EINVAL;
goto event_error;
/*
* Only all-syscall tracing supported for now.
*/
- if (event_param.name[0] != '\0')
+ if (event_param->name[0] != '\0')
return -EINVAL;
ret = lttng_syscalls_register(channel, NULL);
if (ret)
struct lttng_channel *channel = file->private_data;
switch (cmd) {
+ case LTTNG_KERNEL_OLD_STREAM:
case LTTNG_KERNEL_STREAM:
return lttng_abi_open_stream(file);
+ case LTTNG_KERNEL_OLD_EVENT:
+ {
+ struct lttng_kernel_event *uevent_param;
+ struct lttng_kernel_old_event *old_uevent_param;
+ int ret;
+
+ uevent_param = kmalloc(sizeof(struct lttng_kernel_event),
+ GFP_KERNEL);
+ if (!uevent_param) {
+ ret = -ENOMEM;
+ goto old_event_end;
+ }
+ old_uevent_param = kmalloc(
+ sizeof(struct lttng_kernel_old_event),
+ GFP_KERNEL);
+ if (!old_uevent_param) {
+ ret = -ENOMEM;
+ goto old_event_error_free_param;
+ }
+ if (copy_from_user(old_uevent_param,
+ (struct lttng_kernel_old_event __user *) arg,
+ sizeof(struct lttng_kernel_old_event))) {
+ ret = -EFAULT;
+ goto old_event_error_free_old_param;
+ }
+
+ memcpy(uevent_param->name, old_uevent_param->name,
+ sizeof(uevent_param->name));
+ uevent_param->instrumentation =
+ old_uevent_param->instrumentation;
+
+ switch (old_uevent_param->instrumentation) {
+ case LTTNG_KERNEL_KPROBE:
+ uevent_param->u.kprobe.addr =
+ old_uevent_param->u.kprobe.addr;
+ uevent_param->u.kprobe.offset =
+ old_uevent_param->u.kprobe.offset;
+ memcpy(uevent_param->u.kprobe.symbol_name,
+ old_uevent_param->u.kprobe.symbol_name,
+ sizeof(uevent_param->u.kprobe.symbol_name));
+ break;
+ case LTTNG_KERNEL_KRETPROBE:
+ uevent_param->u.kretprobe.addr =
+ old_uevent_param->u.kretprobe.addr;
+ uevent_param->u.kretprobe.offset =
+ old_uevent_param->u.kretprobe.offset;
+ memcpy(uevent_param->u.kretprobe.symbol_name,
+ old_uevent_param->u.kretprobe.symbol_name,
+ sizeof(uevent_param->u.kretprobe.symbol_name));
+ break;
+ case LTTNG_KERNEL_FUNCTION:
+ memcpy(uevent_param->u.ftrace.symbol_name,
+ old_uevent_param->u.ftrace.symbol_name,
+ sizeof(uevent_param->u.ftrace.symbol_name));
+ break;
+ default:
+ break;
+ }
+ ret = lttng_abi_create_event(file, uevent_param);
+
+old_event_error_free_old_param:
+ kfree(old_uevent_param);
+old_event_error_free_param:
+ kfree(uevent_param);
+old_event_end:
+ return ret;
+ }
case LTTNG_KERNEL_EVENT:
- return lttng_abi_create_event(file, (struct lttng_kernel_event __user *) arg);
+ {
+ struct lttng_kernel_event uevent_param;
+
+ if (copy_from_user(&uevent_param,
+ (struct lttng_kernel_event __user *) arg,
+ sizeof(uevent_param)))
+ return -EFAULT;
+ return lttng_abi_create_event(file, &uevent_param);
+ }
+ case LTTNG_KERNEL_OLD_CONTEXT:
+ {
+ struct lttng_kernel_context *ucontext_param;
+ struct lttng_kernel_old_context *old_ucontext_param;
+ int ret;
+
+ ucontext_param = kmalloc(sizeof(struct lttng_kernel_context),
+ GFP_KERNEL);
+ if (!ucontext_param) {
+ ret = -ENOMEM;
+ goto old_ctx_end;
+ }
+ old_ucontext_param = kmalloc(sizeof(struct lttng_kernel_old_context),
+ GFP_KERNEL);
+ if (!old_ucontext_param) {
+ ret = -ENOMEM;
+ goto old_ctx_error_free_param;
+ }
+
+ if (copy_from_user(old_ucontext_param,
+ (struct lttng_kernel_old_context __user *) arg,
+ sizeof(struct lttng_kernel_old_context))) {
+ ret = -EFAULT;
+ goto old_ctx_error_free_old_param;
+ }
+ ucontext_param->ctx = old_ucontext_param->ctx;
+ memcpy(ucontext_param->padding, old_ucontext_param->padding,
+ sizeof(ucontext_param->padding));
+ /* only type that uses the union */
+ if (old_ucontext_param->ctx == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) {
+ ucontext_param->u.perf_counter.type =
+ old_ucontext_param->u.perf_counter.type;
+ ucontext_param->u.perf_counter.config =
+ old_ucontext_param->u.perf_counter.config;
+ memcpy(ucontext_param->u.perf_counter.name,
+ old_ucontext_param->u.perf_counter.name,
+ sizeof(ucontext_param->u.perf_counter.name));
+ }
+
+ ret = lttng_abi_add_context(file,
+ ucontext_param,
+ &channel->ctx, channel->session);
+
+old_ctx_error_free_old_param:
+ kfree(old_ucontext_param);
+old_ctx_error_free_param:
+ kfree(ucontext_param);
+old_ctx_end:
+ return ret;
+ }
case LTTNG_KERNEL_CONTEXT:
- return lttng_abi_add_context(file,
+ {
+ struct lttng_kernel_context ucontext_param;
+
+ if (copy_from_user(&ucontext_param,
(struct lttng_kernel_context __user *) arg,
+ sizeof(ucontext_param)))
+ return -EFAULT;
+ return lttng_abi_add_context(file,
+ &ucontext_param,
&channel->ctx, channel->session);
+ }
+ case LTTNG_KERNEL_OLD_ENABLE:
case LTTNG_KERNEL_ENABLE:
return lttng_channel_enable(channel);
+ case LTTNG_KERNEL_OLD_DISABLE:
case LTTNG_KERNEL_DISABLE:
return lttng_channel_disable(channel);
default:
return -ENOIOCTLCMD;
}
+
}
/**
long lttng_metadata_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
+ case LTTNG_KERNEL_OLD_STREAM:
case LTTNG_KERNEL_STREAM:
return lttng_abi_open_stream(file);
default:
struct lttng_event *event = file->private_data;
switch (cmd) {
+ case LTTNG_KERNEL_OLD_CONTEXT:
+ {
+ struct lttng_kernel_context *ucontext_param;
+ struct lttng_kernel_old_context *old_ucontext_param;
+ int ret;
+
+ ucontext_param = kmalloc(sizeof(struct lttng_kernel_context),
+ GFP_KERNEL);
+ if (!ucontext_param) {
+ ret = -ENOMEM;
+ goto old_ctx_end;
+ }
+ old_ucontext_param = kmalloc(sizeof(struct lttng_kernel_old_context),
+ GFP_KERNEL);
+ if (!old_ucontext_param) {
+ ret = -ENOMEM;
+ goto old_ctx_error_free_param;
+ }
+
+ if (copy_from_user(old_ucontext_param,
+ (struct lttng_kernel_old_context __user *) arg,
+ sizeof(struct lttng_kernel_old_context))) {
+ ret = -EFAULT;
+ goto old_ctx_error_free_old_param;
+ }
+ ucontext_param->ctx = old_ucontext_param->ctx;
+ memcpy(ucontext_param->padding, old_ucontext_param->padding,
+ sizeof(ucontext_param->padding));
+ /* only type that uses the union */
+ if (old_ucontext_param->ctx == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) {
+ ucontext_param->u.perf_counter.type =
+ old_ucontext_param->u.perf_counter.type;
+ ucontext_param->u.perf_counter.config =
+ old_ucontext_param->u.perf_counter.config;
+ memcpy(ucontext_param->u.perf_counter.name,
+ old_ucontext_param->u.perf_counter.name,
+ sizeof(ucontext_param->u.perf_counter.name));
+ }
+
+ ret = lttng_abi_add_context(file,
+ ucontext_param,
+ &event->ctx, event->chan->session);
+
+old_ctx_error_free_old_param:
+ kfree(old_ucontext_param);
+old_ctx_error_free_param:
+ kfree(ucontext_param);
+old_ctx_end:
+ return ret;
+ }
case LTTNG_KERNEL_CONTEXT:
+ {
+ struct lttng_kernel_context ucontext_param;
+
+ if (copy_from_user(&ucontext_param,
+ (struct lttng_kernel_context __user *) arg,
+ sizeof(ucontext_param)))
+ return -EFAULT;
return lttng_abi_add_context(file,
- (struct lttng_kernel_context __user *) arg,
+ &ucontext_param,
&event->ctx, event->chan->session);
+ }
+ case LTTNG_KERNEL_OLD_ENABLE:
case LTTNG_KERNEL_ENABLE:
return lttng_event_enable(event);
+ case LTTNG_KERNEL_OLD_DISABLE:
case LTTNG_KERNEL_DISABLE:
return lttng_event_disable(event);
default:
*/
#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_channel {
- int overwrite; /* 1: overwrite, 0: discard */
uint64_t subbuf_size; /* in bytes */
uint64_t num_subbuf;
unsigned int switch_timer_interval; /* usecs */
unsigned int read_timer_interval; /* usecs */
enum lttng_kernel_output output; /* splice, mmap */
+ int overwrite; /* 1: overwrite, 0: discard */
char padding[LTTNG_KERNEL_CHANNEL_PADDING];
-};
+}__attribute__((packed));
struct lttng_kernel_kretprobe {
uint64_t addr;
uint64_t offset;
char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
-};
+}__attribute__((packed));
/*
* Either addr is used, or symbol_name and offset.
uint64_t offset;
char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
-};
+}__attribute__((packed));
struct lttng_kernel_function_tracer {
char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
-};
+}__attribute__((packed));
/*
* For syscall tracing, name = '\0' means "enable all".
struct lttng_kernel_function_tracer ftrace;
char padding[LTTNG_KERNEL_EVENT_PADDING2];
} u;
-};
+}__attribute__((packed));
struct lttng_kernel_tracer_version {
uint32_t major;
uint32_t minor;
uint32_t patchlevel;
-};
+}__attribute__((packed));
enum lttng_kernel_calibrate_type {
LTTNG_KERNEL_CALIBRATE_KRETPROBE,
struct lttng_kernel_calibrate {
enum lttng_kernel_calibrate_type type; /* type (input) */
-};
+}__attribute__((packed));
enum lttng_kernel_context_type {
LTTNG_KERNEL_CONTEXT_PID = 0,
uint32_t type;
uint64_t config;
char name[LTTNG_KERNEL_SYM_NAME_LEN];
-};
+}__attribute__((packed));
#define LTTNG_KERNEL_CONTEXT_PADDING1 16
#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_perf_counter_ctx perf_counter;
char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
} u;
-};
+}__attribute__((packed));
/* LTTng file descriptor ioctl */
-#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
+#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
#define LTTNG_KERNEL_TRACER_VERSION \
- _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
-#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
-#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43)
+ _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
+#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
+#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
#define LTTNG_KERNEL_CALIBRATE \
- _IOWR(0xF6, 0x44, struct lttng_kernel_calibrate)
+ _IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
/* Session FD ioctl */
#define LTTNG_KERNEL_METADATA \
- _IOW(0xF6, 0x50, struct lttng_kernel_channel)
+ _IOW(0xF6, 0x54, struct lttng_kernel_channel)
#define LTTNG_KERNEL_CHANNEL \
- _IOW(0xF6, 0x51, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
-#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
+ _IOW(0xF6, 0x55, struct lttng_kernel_channel)
+#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
+#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
/* Channel FD ioctl */
-#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60)
+#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
#define LTTNG_KERNEL_EVENT \
- _IOW(0xF6, 0x61, struct lttng_kernel_event)
+ _IOW(0xF6, 0x63, struct lttng_kernel_event)
/* Event and Channel FD ioctl */
#define LTTNG_KERNEL_CONTEXT \
- _IOW(0xF6, 0x70, struct lttng_kernel_context)
+ _IOW(0xF6, 0x71, struct lttng_kernel_context)
/* Event, Channel and Session ioctl */
-#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x80)
-#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x81)
+#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
+#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
#endif /* _LTTNG_ABI_H */
projects / lttng-modules.git / commitdiff
