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Cleanup: initialize kernel ioctl ABI structures to 0
[lttng-tools.git]
/
src
/
common
/
kernel-ctl
/
kernel-ctl.c
diff --git
a/src/common/kernel-ctl/kernel-ctl.c
b/src/common/kernel-ctl/kernel-ctl.c
index 82d766e1c1e70b53f0b0e3ec354bd7ab93da621b..610a3c53b4cce80dec3fa3896eb3b5b7dd313b5b 100644
(file)
--- a/
src/common/kernel-ctl/kernel-ctl.c
+++ b/
src/common/kernel-ctl/kernel-ctl.c
@@
-1,6
+1,7
@@
/*
* Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
/*
* Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2 only,
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2 only,
@@
-22,10
+23,18
@@
#include <string.h>
#include <common/align.h>
#include <errno.h>
#include <string.h>
#include <common/align.h>
#include <errno.h>
+#include <stdarg.h>
+#include <assert.h>
#include "kernel-ctl.h"
#include "kernel-ioctl.h"
#include "kernel-ctl.h"
#include "kernel-ioctl.h"
+#define LTTNG_IOCTL(fildes, request, ...) ({ \
+ int ret = ioctl(fildes, request, ##__VA_ARGS__);\
+ assert(ret <= 0); \
+ ret ? -errno : 0; \
+})
+
/*
* This flag indicates which version of the kernel ABI to use. The old
* ABI (namespace _old) does not support a 32-bit user-space when the
/*
* This flag indicates which version of the kernel ABI to use. The old
* ABI (namespace _old) does not support a 32-bit user-space when the
@@
-75,10
+84,12
@@
int kernctl_create_session(int fd)
/* open the metadata global channel */
int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
{
/* open the metadata global channel */
int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
{
- struct lttng_kernel_old_channel old_channel;
struct lttng_kernel_channel channel;
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_channel channel;
if (lttng_kernel_use_old_abi) {
+ struct lttng_kernel_old_channel old_channel;
+
+ memset(&old_channel, 0, sizeof(old_channel));
old_channel.overwrite = chops->overwrite;
old_channel.subbuf_size = chops->subbuf_size;
old_channel.num_subbuf = chops->num_subbuf;
old_channel.overwrite = chops->overwrite;
old_channel.subbuf_size = chops->subbuf_size;
old_channel.num_subbuf = chops->num_subbuf;
@@
-96,6
+107,7
@@
int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
return ioctl(fd, LTTNG_KERNEL_OLD_METADATA, &old_channel);
}
return ioctl(fd, LTTNG_KERNEL_OLD_METADATA, &old_channel);
}
+ memset(&channel, 0, sizeof(channel));
channel.overwrite = chops->overwrite;
channel.subbuf_size = chops->subbuf_size;
channel.num_subbuf = chops->num_subbuf;
channel.overwrite = chops->overwrite;
channel.subbuf_size = chops->subbuf_size;
channel.num_subbuf = chops->num_subbuf;
@@
-161,7
+173,7
@@
int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits)
}
kmask_len.len = 0;
}
kmask_len.len = 0;
- ret =
ioctl
(fd, LTTNG_KERNEL_SYSCALL_MASK, &kmask_len);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_SYSCALL_MASK, &kmask_len);
if (ret) {
goto end;
}
if (ret) {
goto end;
}
@@
-175,7
+187,7
@@
int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits)
}
kmask->len = kmask_len.len;
}
kmask->len = kmask_len.len;
- ret =
ioctl
(fd, LTTNG_KERNEL_SYSCALL_MASK, kmask);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_SYSCALL_MASK, kmask);
if (ret) {
goto end;
}
if (ret) {
goto end;
}
@@
-196,12
+208,12
@@
end:
int kernctl_track_pid(int fd, int pid)
{
int kernctl_track_pid(int fd, int pid)
{
- return
ioctl
(fd, LTTNG_KERNEL_SESSION_TRACK_PID, pid);
+ return
LTTNG_IOCTL
(fd, LTTNG_KERNEL_SESSION_TRACK_PID, pid);
}
int kernctl_untrack_pid(int fd, int pid)
{
}
int kernctl_untrack_pid(int fd, int pid)
{
- return
ioctl
(fd, LTTNG_KERNEL_SESSION_UNTRACK_PID, pid);
+ return
LTTNG_IOCTL
(fd, LTTNG_KERNEL_SESSION_UNTRACK_PID, pid);
}
int kernctl_list_tracker_pids(int fd)
}
int kernctl_list_tracker_pids(int fd)
@@
-209,6
+221,11
@@
int kernctl_list_tracker_pids(int fd)
return ioctl(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS);
}
return ioctl(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS);
}
+int kernctl_session_metadata_regenerate(int fd)
+{
+ return LTTNG_IOCTL(fd, LTTNG_KERNEL_SESSION_METADATA_REGEN);
+}
+
int kernctl_create_stream(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_STREAM,
int kernctl_create_stream(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_STREAM,
@@
-220,6
+237,7
@@
int kernctl_create_event(int fd, struct lttng_kernel_event *ev)
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_event old_event;
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_event old_event;
+ memset(&old_event, 0, sizeof(old_event));
memcpy(old_event.name, ev->name, sizeof(old_event.name));
old_event.instrumentation = ev->instrumentation;
switch (ev->instrumentation) {
memcpy(old_event.name, ev->name, sizeof(old_event.name));
old_event.instrumentation = ev->instrumentation;
switch (ev->instrumentation) {
@@
-256,6
+274,7
@@
int kernctl_add_context(int fd, struct lttng_kernel_context *ctx)
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_context old_ctx;
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_context old_ctx;
+ memset(&old_ctx, 0, sizeof(old_ctx));
old_ctx.ctx = ctx->ctx;
/* only type that uses the union */
if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) {
old_ctx.ctx = ctx->ctx;
/* only type that uses the union */
if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) {
@@
-267,20
+286,20
@@
int kernctl_add_context(int fd, struct lttng_kernel_context *ctx)
ctx->u.perf_counter.name,
sizeof(old_ctx.u.perf_counter.name));
}
ctx->u.perf_counter.name,
sizeof(old_ctx.u.perf_counter.name));
}
- return
ioctl
(fd, LTTNG_KERNEL_OLD_CONTEXT, &old_ctx);
+ return
LTTNG_IOCTL
(fd, LTTNG_KERNEL_OLD_CONTEXT, &old_ctx);
}
}
- return
ioctl
(fd, LTTNG_KERNEL_CONTEXT, ctx);
+ return
LTTNG_IOCTL
(fd, LTTNG_KERNEL_CONTEXT, ctx);
}
}
-/* Enable event, channel and session
ioctl
*/
+/* Enable event, channel and session
LTTNG_IOCTL
*/
int kernctl_enable(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_ENABLE,
LTTNG_KERNEL_ENABLE);
}
int kernctl_enable(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_ENABLE,
LTTNG_KERNEL_ENABLE);
}
-/* Disable event, channel and session
ioctl
*/
+/* Disable event, channel and session
LTTNG_IOCTL
*/
int kernctl_disable(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_DISABLE,
int kernctl_disable(int fd)
{
return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_DISABLE,
@@
-313,7
+332,7
@@
int kernctl_filter(int fd, struct lttng_filter_bytecode *filter)
kb->reloc_offset = filter->reloc_table_offset;
kb->seqnum = filter->seqnum;
memcpy(kb->data, filter->data, len);
kb->reloc_offset = filter->reloc_table_offset;
kb->seqnum = filter->seqnum;
memcpy(kb->data, filter->data, len);
- ret =
ioctl
(fd, LTTNG_KERNEL_FILTER, kb);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_FILTER, kb);
free(kb);
return ret;
}
free(kb);
return ret;
}
@@
-334,7
+353,7
@@
int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v)
int ret;
if (lttng_kernel_use_old_abi == -1) {
int ret;
if (lttng_kernel_use_old_abi == -1) {
- ret =
ioctl
(fd, LTTNG_KERNEL_TRACER_VERSION, v);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_TRACER_VERSION, v);
if (!ret) {
lttng_kernel_use_old_abi = 0;
goto end;
if (!ret) {
lttng_kernel_use_old_abi = 0;
goto end;
@@
-344,7
+363,7
@@
int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v)
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_tracer_version old_v;
if (lttng_kernel_use_old_abi) {
struct lttng_kernel_old_tracer_version old_v;
- ret =
ioctl
(fd, LTTNG_KERNEL_OLD_TRACER_VERSION, &old_v);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_OLD_TRACER_VERSION, &old_v);
if (ret) {
goto end;
}
if (ret) {
goto end;
}
@@
-352,7
+371,7
@@
int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v)
v->minor = old_v.minor;
v->patchlevel = old_v.patchlevel;
} else {
v->minor = old_v.minor;
v->patchlevel = old_v.patchlevel;
} else {
- ret =
ioctl
(fd, LTTNG_KERNEL_TRACER_VERSION, v);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_TRACER_VERSION, v);
}
end:
}
end:
@@
-362,7
+381,7
@@
end:
int kernctl_tracer_abi_version(int fd,
struct lttng_kernel_tracer_abi_version *v)
{
int kernctl_tracer_abi_version(int fd,
struct lttng_kernel_tracer_abi_version *v)
{
- return
ioctl
(fd, LTTNG_KERNEL_TRACER_ABI_VERSION, v);
+ return
LTTNG_IOCTL
(fd, LTTNG_KERNEL_TRACER_ABI_VERSION, v);
}
int kernctl_wait_quiescent(int fd)
}
int kernctl_wait_quiescent(int fd)
@@
-376,7
+395,7
@@
int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate)
int ret;
if (lttng_kernel_use_old_abi == -1) {
int ret;
if (lttng_kernel_use_old_abi == -1) {
- ret =
ioctl
(fd, LTTNG_KERNEL_CALIBRATE, calibrate);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_CALIBRATE, calibrate);
if (!ret) {
lttng_kernel_use_old_abi = 0;
goto end;
if (!ret) {
lttng_kernel_use_old_abi = 0;
goto end;
@@
-387,13
+406,14
@@
int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate)
struct lttng_kernel_old_calibrate old_calibrate;
old_calibrate.type = calibrate->type;
struct lttng_kernel_old_calibrate old_calibrate;
old_calibrate.type = calibrate->type;
- ret = ioctl(fd, LTTNG_KERNEL_OLD_CALIBRATE, &old_calibrate);
+ ret = LTTNG_IOCTL(fd, LTTNG_KERNEL_OLD_CALIBRATE,
+ &old_calibrate);
if (ret) {
goto end;
}
calibrate->type = old_calibrate.type;
} else {
if (ret) {
goto end;
}
calibrate->type = old_calibrate.type;
} else {
- ret =
ioctl
(fd, LTTNG_KERNEL_CALIBRATE, calibrate);
+ ret =
LTTNG_IOCTL
(fd, LTTNG_KERNEL_CALIBRATE, calibrate);
}
end:
}
end:
@@
-403,7
+423,13
@@
end:
int kernctl_buffer_flush(int fd)
{
int kernctl_buffer_flush(int fd)
{
- return ioctl(fd, RING_BUFFER_FLUSH);
+ return LTTNG_IOCTL(fd, RING_BUFFER_FLUSH);
+}
+
+/* returns the version of the metadata. */
+int kernctl_get_metadata_version(int fd, uint64_t *version)
+{
+ return LTTNG_IOCTL(fd, RING_BUFFER_GET_METADATA_VERSION, version);
}
}
@@
-414,13
+440,13
@@
int kernctl_buffer_flush(int fd)
/* returns the length to mmap. */
int kernctl_get_mmap_len(int fd, unsigned long *len)
{
/* returns the length to mmap. */
int kernctl_get_mmap_len(int fd, unsigned long *len)
{
- return
ioctl
(fd, RING_BUFFER_GET_MMAP_LEN, len);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_MMAP_LEN, len);
}
/* returns the maximum size for sub-buffers. */
int kernctl_get_max_subbuf_size(int fd, unsigned long *len)
{
}
/* returns the maximum size for sub-buffers. */
int kernctl_get_max_subbuf_size(int fd, unsigned long *len)
{
- return
ioctl
(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len);
}
/*
}
/*
@@
-431,32
+457,32
@@
int kernctl_get_max_subbuf_size(int fd, unsigned long *len)
/* returns the offset of the subbuffer belonging to the mmap reader. */
int kernctl_get_mmap_read_offset(int fd, unsigned long *off)
{
/* returns the offset of the subbuffer belonging to the mmap reader. */
int kernctl_get_mmap_read_offset(int fd, unsigned long *off)
{
- return
ioctl
(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off);
}
/* returns the size of the current sub-buffer, without padding (for mmap). */
int kernctl_get_subbuf_size(int fd, unsigned long *len)
{
}
/* returns the size of the current sub-buffer, without padding (for mmap). */
int kernctl_get_subbuf_size(int fd, unsigned long *len)
{
- return
ioctl
(fd, RING_BUFFER_GET_SUBBUF_SIZE, len);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_SUBBUF_SIZE, len);
}
/* returns the size of the current sub-buffer, without padding (for mmap). */
int kernctl_get_padded_subbuf_size(int fd, unsigned long *len)
{
}
/* returns the size of the current sub-buffer, without padding (for mmap). */
int kernctl_get_padded_subbuf_size(int fd, unsigned long *len)
{
- return
ioctl
(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len);
}
/* Get exclusive read access to the next sub-buffer that can be read. */
int kernctl_get_next_subbuf(int fd)
{
}
/* Get exclusive read access to the next sub-buffer that can be read. */
int kernctl_get_next_subbuf(int fd)
{
- return
ioctl
(fd, RING_BUFFER_GET_NEXT_SUBBUF);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_NEXT_SUBBUF);
}
/* Release exclusive sub-buffer access, move consumer forward. */
int kernctl_put_next_subbuf(int fd)
{
}
/* Release exclusive sub-buffer access, move consumer forward. */
int kernctl_put_next_subbuf(int fd)
{
- return
ioctl
(fd, RING_BUFFER_PUT_NEXT_SUBBUF);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_PUT_NEXT_SUBBUF);
}
/* snapshot */
}
/* snapshot */
@@
-464,77
+490,87
@@
int kernctl_put_next_subbuf(int fd)
/* Get a snapshot of the current ring buffer producer and consumer positions */
int kernctl_snapshot(int fd)
{
/* Get a snapshot of the current ring buffer producer and consumer positions */
int kernctl_snapshot(int fd)
{
- return
ioctl
(fd, RING_BUFFER_SNAPSHOT);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_SNAPSHOT);
}
/* Get the consumer position (iteration start) */
int kernctl_snapshot_get_consumed(int fd, unsigned long *pos)
{
}
/* Get the consumer position (iteration start) */
int kernctl_snapshot_get_consumed(int fd, unsigned long *pos)
{
- return
ioctl
(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos);
}
/* Get the producer position (iteration end) */
int kernctl_snapshot_get_produced(int fd, unsigned long *pos)
{
}
/* Get the producer position (iteration end) */
int kernctl_snapshot_get_produced(int fd, unsigned long *pos)
{
- return
ioctl
(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos);
}
/* Get exclusive read access to the specified sub-buffer position */
int kernctl_get_subbuf(int fd, unsigned long *len)
{
}
/* Get exclusive read access to the specified sub-buffer position */
int kernctl_get_subbuf(int fd, unsigned long *len)
{
- return
ioctl
(fd, RING_BUFFER_GET_SUBBUF, len);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_GET_SUBBUF, len);
}
/* Release exclusive sub-buffer access */
int kernctl_put_subbuf(int fd)
{
}
/* Release exclusive sub-buffer access */
int kernctl_put_subbuf(int fd)
{
- return
ioctl
(fd, RING_BUFFER_PUT_SUBBUF);
+ return
LTTNG_IOCTL
(fd, RING_BUFFER_PUT_SUBBUF);
}
/* Returns the timestamp begin of the current sub-buffer. */
int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin)
{
}
/* Returns the timestamp begin of the current sub-buffer. */
int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin)
{
- return ioctl(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN, timestamp_begin);
+ return LTTNG_IOCTL(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN,
+ timestamp_begin);
}
/* Returns the timestamp end of the current sub-buffer. */
int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end)
{
}
/* Returns the timestamp end of the current sub-buffer. */
int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end)
{
- return ioctl(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_END, timestamp_end);
+ return LTTNG_IOCTL(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_END,
+ timestamp_end);
}
/* Returns the number of discarded events in the current sub-buffer. */
int kernctl_get_events_discarded(int fd, uint64_t *events_discarded)
{
}
/* Returns the number of discarded events in the current sub-buffer. */
int kernctl_get_events_discarded(int fd, uint64_t *events_discarded)
{
- return ioctl(fd, LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED, events_discarded);
+ return LTTNG_IOCTL(fd, LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED,
+ events_discarded);
}
/* Returns the content size in the current sub-buffer. */
int kernctl_get_content_size(int fd, uint64_t *content_size)
{
}
/* Returns the content size in the current sub-buffer. */
int kernctl_get_content_size(int fd, uint64_t *content_size)
{
- return ioctl(fd, LTTNG_RING_BUFFER_GET_CONTENT_SIZE, content_size);
+ return LTTNG_IOCTL(fd, LTTNG_RING_BUFFER_GET_CONTENT_SIZE,
+ content_size);
}
/* Returns the packet size in the current sub-buffer. */
int kernctl_get_packet_size(int fd, uint64_t *packet_size)
{
}
/* Returns the packet size in the current sub-buffer. */
int kernctl_get_packet_size(int fd, uint64_t *packet_size)
{
- return
ioctl
(fd, LTTNG_RING_BUFFER_GET_PACKET_SIZE, packet_size);
+ return
LTTNG_IOCTL
(fd, LTTNG_RING_BUFFER_GET_PACKET_SIZE, packet_size);
}
/* Returns the stream id of the current sub-buffer. */
int kernctl_get_stream_id(int fd, uint64_t *stream_id)
{
}
/* Returns the stream id of the current sub-buffer. */
int kernctl_get_stream_id(int fd, uint64_t *stream_id)
{
- return
ioctl
(fd, LTTNG_RING_BUFFER_GET_STREAM_ID, stream_id);
+ return
LTTNG_IOCTL
(fd, LTTNG_RING_BUFFER_GET_STREAM_ID, stream_id);
}
/* Returns the current timestamp. */
int kernctl_get_current_timestamp(int fd, uint64_t *ts)
{
}
/* Returns the current timestamp. */
int kernctl_get_current_timestamp(int fd, uint64_t *ts)
{
- return
ioctl
(fd, LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP, ts);
+ return
LTTNG_IOCTL
(fd, LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP, ts);
}
/* Returns the packet sequence number of the current sub-buffer. */
int kernctl_get_sequence_number(int fd, uint64_t *seq)
{
}
/* Returns the packet sequence number of the current sub-buffer. */
int kernctl_get_sequence_number(int fd, uint64_t *seq)
{
- return ioctl(fd, LTTNG_RING_BUFFER_GET_SEQ_NUM, seq);
+ return LTTNG_IOCTL(fd, LTTNG_RING_BUFFER_GET_SEQ_NUM, seq);
+}
+
+/* Returns the stream instance id. */
+int kernctl_get_instance_id(int fd, uint64_t *id)
+{
+ return LTTNG_IOCTL(fd, LTTNG_RING_BUFFER_INSTANCE_ID, id);
}
}
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