struct itimerval;
struct itimerspec;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
typedef __kernel_old_time_t time_t;
#endif
struct trace_syscall_entry {
void *event_func;
void *event_notifier_func;
- const struct lttng_event_desc *desc;
- const struct lttng_event_field *fields;
+ const struct lttng_kernel_event_desc *desc;
+ const struct lttng_kernel_event_field **fields;
unsigned int nrargs;
};
DECLARE_BITMAP(sc_compat_exit, NR_compat_syscalls);
};
-static void syscall_entry_event_unknown(struct lttng_event *event,
+static void syscall_entry_event_unknown(struct hlist_head *unknown_action_list_head,
struct pt_regs *regs, long id)
{
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+ struct lttng_kernel_event_common_private *event_priv;
lttng_syscall_get_arguments(current, regs, args);
- if (unlikely(in_compat_syscall()))
- __event_probe__compat_syscall_entry_unknown(event, id, args);
- else
- __event_probe__syscall_entry_unknown(event, id, args);
+ lttng_hlist_for_each_entry_rcu(event_priv, unknown_action_list_head, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ if (unlikely(in_compat_syscall()))
+ __event_probe__compat_syscall_entry_unknown(event_recorder, id, args);
+ else
+ __event_probe__syscall_entry_unknown(event_recorder, id, args);
+ }
}
static void syscall_entry_event_notifier_unknown(
struct pt_regs *regs, long id)
{
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- struct lttng_event_notifier *notifier;
+ struct lttng_kernel_event_common_private *event_priv;
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, unknown_dispatch_list_head, u.syscall.node) {
+ lttng_hlist_for_each_entry_rcu(event_priv, unknown_dispatch_list_head, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
if (unlikely(in_compat_syscall()))
- __event_notifier_probe__compat_syscall_entry_unknown(notifier, id, args);
+ __event_notifier_probe__compat_syscall_entry_unknown(event_notifier, id, args);
else
- __event_notifier_probe__syscall_entry_unknown(notifier, id, args);
+ __event_notifier_probe__syscall_entry_unknown(event_notifier, id, args);
}
}
struct pt_regs *regs, long id, long ret)
{
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- struct lttng_event_notifier *notifier;
+ struct lttng_kernel_event_common_private *event_priv;
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, unknown_dispatch_list_head, u.syscall.node) {
+ lttng_hlist_for_each_entry_rcu(event_priv, unknown_dispatch_list_head, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
if (unlikely(in_compat_syscall()))
- __event_notifier_probe__compat_syscall_exit_unknown(notifier, id, ret, args);
+ __event_notifier_probe__compat_syscall_exit_unknown(event_notifier, id, ret, args);
else
- __event_notifier_probe__syscall_exit_unknown(notifier, id, ret, args);
+ __event_notifier_probe__syscall_exit_unknown(event_notifier, id, ret, args);
}
}
static __always_inline
-void syscall_entry_call_func(void *func, unsigned int nrargs, void *data,
+void syscall_entry_call_func(struct hlist_head *action_list,
+ void *func, unsigned int nrargs,
struct pt_regs *regs)
{
+ struct lttng_kernel_event_common_private *event_priv;
+
switch (nrargs) {
case 0:
{
void (*fptr)(void *__data) = func;
- fptr(data);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder);
+ }
break;
}
case 1:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(data, args[0]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, args[0]);
+ }
break;
}
case 2:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(data, args[0], args[1]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, args[0], args[1]);
+ }
break;
}
case 3:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(data, args[0], args[1], args[2]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, args[0], args[1], args[2]);
+ }
break;
}
case 4:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(data, args[0], args[1], args[2], args[3]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, args[0], args[1], args[2], args[3]);
+ }
break;
}
case 5:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(data, args[0], args[1], args[2], args[3], args[4]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, args[0], args[1], args[2], args[3], args[4]);
+ }
break;
}
case 6:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(data, args[0], args[1], args[2],
- args[3], args[4], args[5]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, args[0], args[1], args[2],
+ args[3], args[4], args[5]);
+ }
break;
}
default:
void syscall_entry_event_notifier_call_func(struct hlist_head *dispatch_list,
void *func, unsigned int nrargs, struct pt_regs *regs)
{
- struct lttng_event_notifier *notifier;
+ struct lttng_kernel_event_common_private *event_priv;
switch (nrargs) {
case 0:
{
void (*fptr)(void *__data) = func;
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier);
+ }
break;
}
case 1:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, args[0]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, args[0]);
+ }
break;
}
case 2:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, args[0], args[1]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, args[0], args[1]);
+ }
break;
}
case 3:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, args[0], args[1], args[2]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, args[0], args[1], args[2]);
+ }
break;
}
case 4:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, args[0], args[1], args[2], args[3]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, args[0], args[1], args[2], args[3]);
+ }
break;
}
case 5:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, args[0], args[1], args[2], args[3], args[4]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, args[0], args[1], args[2], args[3], args[4]);
+ }
break;
}
case 6:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, args[0], args[1], args[2], args[3], args[4], args[5]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, args[0], args[1], args[2], args[3], args[4], args[5]);
+ }
break;
}
default:
void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id)
{
struct lttng_channel *chan = __data;
- struct lttng_event *event, *unknown_event;
+ struct hlist_head *action_list, *unknown_action_list;
const struct trace_syscall_entry *table, *entry;
size_t table_len;
struct lttng_syscall_filter *filter = chan->sc_filter;
if (id < 0 || id >= NR_compat_syscalls
- || (!READ_ONCE(chan->syscall_all) && !test_bit(id, filter->sc_compat_entry))) {
+ || (!READ_ONCE(chan->syscall_all_entry) && !test_bit(id, filter->sc_compat_entry))) {
/* System call filtered out. */
return;
}
table = compat_sc_table;
table_len = ARRAY_SIZE(compat_sc_table);
- unknown_event = chan->sc_compat_unknown;
+ unknown_action_list = &chan->sc_compat_unknown;
} else {
struct lttng_syscall_filter *filter = chan->sc_filter;
if (id < 0 || id >= NR_syscalls
- || (!READ_ONCE(chan->syscall_all) && !test_bit(id, filter->sc_entry))) {
+ || (!READ_ONCE(chan->syscall_all_entry) && !test_bit(id, filter->sc_entry))) {
/* System call filtered out. */
return;
}
table = sc_table;
table_len = ARRAY_SIZE(sc_table);
- unknown_event = chan->sc_unknown;
+ unknown_action_list = &chan->sc_unknown;
}
if (unlikely(id < 0 || id >= table_len)) {
- syscall_entry_event_unknown(unknown_event, regs, id);
+ syscall_entry_event_unknown(unknown_action_list, regs, id);
return;
}
- if (unlikely(in_compat_syscall()))
- event = chan->compat_sc_table[id];
- else
- event = chan->sc_table[id];
- if (unlikely(!event)) {
- syscall_entry_event_unknown(unknown_event, regs, id);
+
+ entry = &table[id];
+ if (!entry->event_func) {
+ syscall_entry_event_unknown(unknown_action_list, regs, id);
return;
}
- entry = &table[id];
- WARN_ON_ONCE(!entry->event_func);
- syscall_entry_call_func(entry->event_func, entry->nrargs, event, regs);
+
+ if (unlikely(in_compat_syscall())) {
+ action_list = &chan->compat_sc_table[id];
+ } else {
+ action_list = &chan->sc_table[id];
+ }
+ if (unlikely(hlist_empty(action_list)))
+ return;
+
+ syscall_entry_call_func(action_list, entry->event_func, entry->nrargs, regs);
}
void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs,
entry->event_notifier_func, entry->nrargs, regs);
}
-static void syscall_exit_event_unknown(struct lttng_event *event,
+static void syscall_exit_event_unknown(struct hlist_head *unknown_action_list_head,
struct pt_regs *regs, long id, long ret)
{
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
+ struct lttng_kernel_event_common_private *event_priv;
lttng_syscall_get_arguments(current, regs, args);
- if (unlikely(in_compat_syscall()))
- __event_probe__compat_syscall_exit_unknown(event, id, ret,
- args);
- else
- __event_probe__syscall_exit_unknown(event, id, ret, args);
+ lttng_hlist_for_each_entry_rcu(event_priv, unknown_action_list_head, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ if (unlikely(in_compat_syscall()))
+ __event_probe__compat_syscall_exit_unknown(event_recorder, id, ret,
+ args);
+ else
+ __event_probe__syscall_exit_unknown(event_recorder, id, ret, args);
+ }
}
-void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret)
+static __always_inline
+void syscall_exit_call_func(struct hlist_head *action_list,
+ void *func, unsigned int nrargs,
+ struct pt_regs *regs, long ret)
{
- struct lttng_channel *chan = __data;
- struct lttng_event *event, *unknown_event;
- const struct trace_syscall_entry *table, *entry;
- size_t table_len;
- long id;
-
- id = syscall_get_nr(current, regs);
- if (unlikely(in_compat_syscall())) {
- struct lttng_syscall_filter *filter = chan->sc_filter;
-
- if (id < 0 || id >= NR_compat_syscalls
- || (!READ_ONCE(chan->syscall_all) && !test_bit(id, filter->sc_compat_exit))) {
- /* System call filtered out. */
- return;
- }
- table = compat_sc_exit_table;
- table_len = ARRAY_SIZE(compat_sc_exit_table);
- unknown_event = chan->compat_sc_exit_unknown;
- } else {
- struct lttng_syscall_filter *filter = chan->sc_filter;
-
- if (id < 0 || id >= NR_syscalls
- || (!READ_ONCE(chan->syscall_all) && !test_bit(id, filter->sc_exit))) {
- /* System call filtered out. */
- return;
- }
- table = sc_exit_table;
- table_len = ARRAY_SIZE(sc_exit_table);
- unknown_event = chan->sc_exit_unknown;
- }
- if (unlikely(id < 0 || id >= table_len)) {
- syscall_exit_event_unknown(unknown_event, regs, id, ret);
- return;
- }
- if (unlikely(in_compat_syscall()))
- event = chan->compat_sc_exit_table[id];
- else
- event = chan->sc_exit_table[id];
- if (unlikely(!event)) {
- syscall_exit_event_unknown(unknown_event, regs, id, ret);
- return;
- }
- entry = &table[id];
- WARN_ON_ONCE(!entry->event_func);
+ struct lttng_kernel_event_common_private *event_priv;
- switch (entry->nrargs) {
+ switch (nrargs) {
case 0:
{
- void (*fptr)(void *__data, long ret) = entry->event_func;
+ void (*fptr)(void *__data, long ret) = func;
- fptr(event, ret);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret);
+ }
break;
}
case 1:
{
void (*fptr)(void *__data,
long ret,
- unsigned long arg0) = entry->event_func;
+ unsigned long arg0) = func;
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(event, ret, args[0]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret, args[0]);
+ }
break;
}
case 2:
void (*fptr)(void *__data,
long ret,
unsigned long arg0,
- unsigned long arg1) = entry->event_func;
+ unsigned long arg1) = func;
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(event, ret, args[0], args[1]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret, args[0], args[1]);
+ }
break;
}
case 3:
long ret,
unsigned long arg0,
unsigned long arg1,
- unsigned long arg2) = entry->event_func;
+ unsigned long arg2) = func;
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(event, ret, args[0], args[1], args[2]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret, args[0], args[1], args[2]);
+ }
break;
}
case 4:
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
- unsigned long arg3) = entry->event_func;
+ unsigned long arg3) = func;
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(event, ret, args[0], args[1], args[2], args[3]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret, args[0], args[1], args[2], args[3]);
+ }
break;
}
case 5:
unsigned long arg1,
unsigned long arg2,
unsigned long arg3,
- unsigned long arg4) = entry->event_func;
+ unsigned long arg4) = func;
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(event, ret, args[0], args[1], args[2], args[3], args[4]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret, args[0], args[1], args[2], args[3], args[4]);
+ }
break;
}
case 6:
unsigned long arg2,
unsigned long arg3,
unsigned long arg4,
- unsigned long arg5) = entry->event_func;
+ unsigned long arg5) = func;
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- fptr(event, ret, args[0], args[1], args[2],
- args[3], args[4], args[5]);
+ lttng_hlist_for_each_entry_rcu(event_priv, action_list, u.syscall.node) {
+ struct lttng_kernel_event_recorder_private *event_recorder_priv =
+ container_of(event_priv, struct lttng_kernel_event_recorder_private, parent);
+ struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
+
+ fptr(event_recorder, ret, args[0], args[1], args[2],
+ args[3], args[4], args[5]);
+ }
break;
}
default:
}
}
+void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret)
+{
+ struct lttng_channel *chan = __data;
+ struct hlist_head *action_list, *unknown_action_list;
+ const struct trace_syscall_entry *table, *entry;
+ size_t table_len;
+ long id;
+
+ id = syscall_get_nr(current, regs);
+
+ if (unlikely(in_compat_syscall())) {
+ struct lttng_syscall_filter *filter = chan->sc_filter;
+
+ if (id < 0 || id >= NR_compat_syscalls
+ || (!READ_ONCE(chan->syscall_all_exit) && !test_bit(id, filter->sc_compat_exit))) {
+ /* System call filtered out. */
+ return;
+ }
+ table = compat_sc_exit_table;
+ table_len = ARRAY_SIZE(compat_sc_exit_table);
+ unknown_action_list = &chan->compat_sc_exit_unknown;
+ } else {
+ struct lttng_syscall_filter *filter = chan->sc_filter;
+
+ if (id < 0 || id >= NR_syscalls
+ || (!READ_ONCE(chan->syscall_all_exit) && !test_bit(id, filter->sc_exit))) {
+ /* System call filtered out. */
+ return;
+ }
+ table = sc_exit_table;
+ table_len = ARRAY_SIZE(sc_exit_table);
+ unknown_action_list = &chan->sc_exit_unknown;
+ }
+ if (unlikely(id < 0 || id >= table_len)) {
+ syscall_exit_event_unknown(unknown_action_list, regs, id, ret);
+ return;
+ }
+
+ entry = &table[id];
+ if (!entry->event_func) {
+ syscall_exit_event_unknown(unknown_action_list, regs, id, ret);
+ return;
+ }
+
+ if (unlikely(in_compat_syscall())) {
+ action_list = &chan->compat_sc_exit_table[id];
+ } else {
+ action_list = &chan->sc_exit_table[id];
+ }
+ if (unlikely(hlist_empty(action_list)))
+ return;
+
+ syscall_exit_call_func(action_list, entry->event_func, entry->nrargs,
+ regs, ret);
+}
+
static __always_inline
void syscall_exit_event_notifier_call_func(struct hlist_head *dispatch_list,
void *func, unsigned int nrargs, struct pt_regs *regs, long ret)
{
- struct lttng_event_notifier *notifier;
+ struct lttng_kernel_event_common_private *event_priv;
switch (nrargs) {
case 0:
{
void (*fptr)(void *__data, long ret) = func;
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret);
+ }
break;
}
case 1:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret, args[0]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret, args[0]);
+ }
break;
}
case 2:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret, args[0], args[1]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret, args[0], args[1]);
+ }
break;
}
case 3:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret, args[0], args[1], args[2]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret, args[0], args[1], args[2]);
+ }
break;
}
case 4:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret, args[0], args[1], args[2], args[3]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret, args[0], args[1], args[2], args[3]);
+ }
break;
}
case 5:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret, args[0], args[1], args[2], args[3], args[4]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret, args[0], args[1], args[2], args[3], args[4]);
+ }
break;
}
case 6:
unsigned long args[LTTNG_SYSCALL_NR_ARGS];
lttng_syscall_get_arguments(current, regs, args);
- lttng_hlist_for_each_entry_rcu(notifier, dispatch_list, u.syscall.node)
- fptr(notifier, ret, args[0], args[1], args[2], args[3], args[4], args[5]);
+ lttng_hlist_for_each_entry_rcu(event_priv, dispatch_list, u.syscall.node) {
+ struct lttng_kernel_event_notifier_private *event_notifier_priv =
+ container_of(event_priv, struct lttng_kernel_event_notifier_private, parent);
+ struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+
+ fptr(event_notifier, ret, args[0], args[1], args[2], args[3], args[4], args[5]);
+ }
break;
}
default:
* Should be called with sessions lock held.
*/
static
-int fill_event_table(const struct trace_syscall_entry *table, size_t table_len,
- struct lttng_event **chan_table, struct lttng_channel *chan,
- void *filter, enum sc_type type)
+int lttng_create_syscall_event_if_missing(const struct trace_syscall_entry *table, size_t table_len,
+ struct hlist_head *chan_table, struct lttng_event_enabler *event_enabler,
+ enum sc_type type)
{
- const struct lttng_event_desc *desc;
+ struct lttng_channel *chan = event_enabler->chan;
+ struct lttng_session *session = chan->session;
unsigned int i;
- /* Allocate events for each syscall, insert into table */
+ /* Allocate events for each syscall matching enabler, insert into table */
for (i = 0; i < table_len; i++) {
- struct lttng_kernel_event ev;
- desc = table[i].desc;
+ const struct lttng_kernel_event_desc *desc = table[i].desc;
+ struct lttng_kernel_abi_event ev;
+ struct lttng_kernel_event_recorder_private *event_recorder_priv;
+ struct lttng_kernel_event_recorder *event_recorder;
+ struct hlist_head *head;
+ bool found = false;
if (!desc) {
/* Unknown syscall */
continue;
}
+ if (lttng_desc_match_enabler(desc,
+ lttng_event_enabler_as_enabler(event_enabler)) <= 0)
+ continue;
/*
- * Skip those already populated by previous failed
- * register for this channel.
+ * Check if already created.
*/
- if (chan_table[i])
+ head = utils_borrow_hash_table_bucket(
+ session->events_ht.table, LTTNG_EVENT_HT_SIZE,
+ desc->event_name);
+ lttng_hlist_for_each_entry(event_recorder_priv, head, hlist) {
+ if (event_recorder_priv->parent.desc == desc
+ && event_recorder_priv->pub->chan == event_enabler->chan)
+ found = true;
+ }
+ if (found)
continue;
+
+ /* We need to create an event for this syscall/enabler. */
memset(&ev, 0, sizeof(ev));
switch (type) {
case SC_TYPE_ENTRY:
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
break;
case SC_TYPE_EXIT:
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
break;
case SC_TYPE_COMPAT_ENTRY:
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
break;
case SC_TYPE_COMPAT_EXIT:
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
break;
}
- strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN - 1);
- ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- ev.instrumentation = LTTNG_KERNEL_SYSCALL;
- chan_table[i] = _lttng_event_create(chan, &ev, filter,
- desc, ev.instrumentation);
- WARN_ON_ONCE(!chan_table[i]);
- if (IS_ERR(chan_table[i])) {
+ strncpy(ev.name, desc->event_name, LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1);
+ ev.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
+ ev.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
+ event_recorder = _lttng_kernel_event_recorder_create(chan, &ev, desc, ev.instrumentation);
+ WARN_ON_ONCE(!event_recorder);
+ if (IS_ERR(event_recorder)) {
/*
* If something goes wrong in event registration
* after the first one, we have no choice but to
* leave the previous events in there, until
* deleted by session teardown.
*/
- return PTR_ERR(chan_table[i]);
+ return PTR_ERR(event_recorder);
}
+ hlist_add_head(&event_recorder->priv->parent.u.syscall.node, &chan_table[i]);
}
return 0;
}
/*
* Should be called with sessions lock held.
*/
-int lttng_syscalls_register_event(struct lttng_channel *chan, void *filter)
+int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler)
{
- struct lttng_kernel_event ev;
+ struct lttng_channel *chan = event_enabler->chan;
+ struct lttng_kernel_abi_event ev;
int ret;
wrapper_vmalloc_sync_mappings();
if (!chan->sc_table) {
/* create syscall table mapping syscall to events */
- chan->sc_table = kzalloc(sizeof(struct lttng_event *)
+ chan->sc_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *)
* ARRAY_SIZE(sc_table), GFP_KERNEL);
if (!chan->sc_table)
return -ENOMEM;
}
if (!chan->sc_exit_table) {
/* create syscall table mapping syscall to events */
- chan->sc_exit_table = kzalloc(sizeof(struct lttng_event *)
+ chan->sc_exit_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *)
* ARRAY_SIZE(sc_exit_table), GFP_KERNEL);
if (!chan->sc_exit_table)
return -ENOMEM;
#ifdef CONFIG_COMPAT
if (!chan->compat_sc_table) {
/* create syscall table mapping compat syscall to events */
- chan->compat_sc_table = kzalloc(sizeof(struct lttng_event *)
+ chan->compat_sc_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *)
* ARRAY_SIZE(compat_sc_table), GFP_KERNEL);
if (!chan->compat_sc_table)
return -ENOMEM;
if (!chan->compat_sc_exit_table) {
/* create syscall table mapping compat syscall to events */
- chan->compat_sc_exit_table = kzalloc(sizeof(struct lttng_event *)
+ chan->compat_sc_exit_table = kzalloc(sizeof(struct lttng_kernel_event_recorder *)
* ARRAY_SIZE(compat_sc_exit_table), GFP_KERNEL);
if (!chan->compat_sc_exit_table)
return -ENOMEM;
}
#endif
- if (!chan->sc_unknown) {
- const struct lttng_event_desc *desc =
+ if (hlist_empty(&chan->sc_unknown)) {
+ const struct lttng_kernel_event_desc *desc =
&__event_desc___syscall_entry_unknown;
+ struct lttng_kernel_event_recorder *event_recorder;
memset(&ev, 0, sizeof(ev));
- strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN);
- ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- ev.instrumentation = LTTNG_KERNEL_SYSCALL;
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
- chan->sc_unknown = _lttng_event_create(chan, &ev, filter,
- desc,
- ev.instrumentation);
- WARN_ON_ONCE(!chan->sc_unknown);
- if (IS_ERR(chan->sc_unknown)) {
- return PTR_ERR(chan->sc_unknown);
+ strncpy(ev.name, desc->event_name, LTTNG_KERNEL_ABI_SYM_NAME_LEN);
+ ev.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
+ ev.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
+ event_recorder = _lttng_kernel_event_recorder_create(chan, &ev, desc,
+ ev.instrumentation);
+ WARN_ON_ONCE(!event_recorder);
+ if (IS_ERR(event_recorder)) {
+ return PTR_ERR(event_recorder);
}
+ hlist_add_head(&event_recorder->priv->parent.u.syscall.node, &chan->sc_unknown);
}
- if (!chan->sc_compat_unknown) {
- const struct lttng_event_desc *desc =
+ if (hlist_empty(&chan->sc_compat_unknown)) {
+ const struct lttng_kernel_event_desc *desc =
&__event_desc___compat_syscall_entry_unknown;
+ struct lttng_kernel_event_recorder *event_recorder;
memset(&ev, 0, sizeof(ev));
- strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN);
- ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- ev.instrumentation = LTTNG_KERNEL_SYSCALL;
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
- chan->sc_compat_unknown = _lttng_event_create(chan, &ev, filter,
- desc,
- ev.instrumentation);
- WARN_ON_ONCE(!chan->sc_unknown);
- if (IS_ERR(chan->sc_compat_unknown)) {
- return PTR_ERR(chan->sc_compat_unknown);
+ strncpy(ev.name, desc->event_name, LTTNG_KERNEL_ABI_SYM_NAME_LEN);
+ ev.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
+ ev.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
+ event_recorder = _lttng_kernel_event_recorder_create(chan, &ev, desc,
+ ev.instrumentation);
+ WARN_ON_ONCE(!event_recorder);
+ if (IS_ERR(event_recorder)) {
+ return PTR_ERR(event_recorder);
}
+ hlist_add_head(&event_recorder->priv->parent.u.syscall.node, &chan->sc_compat_unknown);
}
- if (!chan->compat_sc_exit_unknown) {
- const struct lttng_event_desc *desc =
+ if (hlist_empty(&chan->compat_sc_exit_unknown)) {
+ const struct lttng_kernel_event_desc *desc =
&__event_desc___compat_syscall_exit_unknown;
+ struct lttng_kernel_event_recorder *event_recorder;
memset(&ev, 0, sizeof(ev));
- strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN);
- ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- ev.instrumentation = LTTNG_KERNEL_SYSCALL;
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
- chan->compat_sc_exit_unknown = _lttng_event_create(chan, &ev,
- filter, desc,
- ev.instrumentation);
- WARN_ON_ONCE(!chan->compat_sc_exit_unknown);
- if (IS_ERR(chan->compat_sc_exit_unknown)) {
- return PTR_ERR(chan->compat_sc_exit_unknown);
+ strncpy(ev.name, desc->event_name, LTTNG_KERNEL_ABI_SYM_NAME_LEN);
+ ev.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
+ ev.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
+ event_recorder = _lttng_kernel_event_recorder_create(chan, &ev, desc,
+ ev.instrumentation);
+ WARN_ON_ONCE(!event_recorder);
+ if (IS_ERR(event_recorder)) {
+ return PTR_ERR(event_recorder);
}
+ hlist_add_head(&event_recorder->priv->parent.u.syscall.node, &chan->compat_sc_exit_unknown);
}
- if (!chan->sc_exit_unknown) {
- const struct lttng_event_desc *desc =
+ if (hlist_empty(&chan->sc_exit_unknown)) {
+ const struct lttng_kernel_event_desc *desc =
&__event_desc___syscall_exit_unknown;
+ struct lttng_kernel_event_recorder *event_recorder;
memset(&ev, 0, sizeof(ev));
- strncpy(ev.name, desc->name, LTTNG_KERNEL_SYM_NAME_LEN);
- ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- ev.instrumentation = LTTNG_KERNEL_SYSCALL;
- ev.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- ev.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
- chan->sc_exit_unknown = _lttng_event_create(chan, &ev, filter,
- desc, ev.instrumentation);
- WARN_ON_ONCE(!chan->sc_exit_unknown);
- if (IS_ERR(chan->sc_exit_unknown)) {
- return PTR_ERR(chan->sc_exit_unknown);
+ strncpy(ev.name, desc->event_name, LTTNG_KERNEL_ABI_SYM_NAME_LEN);
+ ev.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
+ ev.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
+ ev.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ ev.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
+ event_recorder = _lttng_kernel_event_recorder_create(chan, &ev, desc,
+ ev.instrumentation);
+ WARN_ON_ONCE(!event_recorder);
+ if (IS_ERR(event_recorder)) {
+ return PTR_ERR(event_recorder);
}
+ hlist_add_head(&event_recorder->priv->parent.u.syscall.node, &chan->sc_exit_unknown);
}
- ret = fill_event_table(sc_table, ARRAY_SIZE(sc_table),
- chan->sc_table, chan, filter, SC_TYPE_ENTRY);
+ ret = lttng_create_syscall_event_if_missing(sc_table, ARRAY_SIZE(sc_table),
+ chan->sc_table, event_enabler, SC_TYPE_ENTRY);
if (ret)
return ret;
- ret = fill_event_table(sc_exit_table, ARRAY_SIZE(sc_exit_table),
- chan->sc_exit_table, chan, filter, SC_TYPE_EXIT);
+ ret = lttng_create_syscall_event_if_missing(sc_exit_table, ARRAY_SIZE(sc_exit_table),
+ chan->sc_exit_table, event_enabler, SC_TYPE_EXIT);
if (ret)
return ret;
#ifdef CONFIG_COMPAT
- ret = fill_event_table(compat_sc_table, ARRAY_SIZE(compat_sc_table),
- chan->compat_sc_table, chan, filter,
- SC_TYPE_COMPAT_ENTRY);
+ ret = lttng_create_syscall_event_if_missing(compat_sc_table, ARRAY_SIZE(compat_sc_table),
+ chan->compat_sc_table, event_enabler, SC_TYPE_COMPAT_ENTRY);
if (ret)
return ret;
- ret = fill_event_table(compat_sc_exit_table, ARRAY_SIZE(compat_sc_exit_table),
- chan->compat_sc_exit_table, chan, filter,
- SC_TYPE_COMPAT_EXIT);
+ ret = lttng_create_syscall_event_if_missing(compat_sc_exit_table, ARRAY_SIZE(compat_sc_exit_table),
+ chan->compat_sc_exit_table, event_enabler, SC_TYPE_COMPAT_EXIT);
if (ret)
return ret;
#endif
* Should be called with sessions lock held.
*/
int lttng_syscalls_register_event_notifier(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- void *filter)
+ struct lttng_event_notifier_enabler *event_notifier_enabler)
{
struct lttng_event_notifier_group *group = event_notifier_enabler->group;
unsigned int i;
struct lttng_event_notifier_enabler *event_notifier_enabler,
enum sc_type type)
{
- struct lttng_event_notifier *notifier;
- const struct lttng_event_desc *desc;
+ struct lttng_kernel_event_notifier_private *event_notifier_priv;
+ struct lttng_kernel_event_notifier *event_notifier;
+ const struct lttng_kernel_event_desc *desc;
struct lttng_event_notifier_group *group = event_notifier_enabler->group;
- struct lttng_kernel_event_notifier event_notifier_param;
+ struct lttng_kernel_abi_event_notifier event_notifier_param;
uint64_t user_token = event_notifier_enabler->base.user_token;
+ uint64_t error_counter_index = event_notifier_enabler->error_counter_index;
struct lttng_enabler *base_enabler = lttng_event_notifier_enabler_as_enabler(
event_notifier_enabler);
struct hlist_head *unknown_dispatch_list;
int ret = 0;
bool found = false;
- enum lttng_kernel_syscall_abi abi;
- enum lttng_kernel_syscall_entryexit entryexit;
+ enum lttng_kernel_abi_syscall_abi abi;
+ enum lttng_kernel_abi_syscall_entryexit entryexit;
struct hlist_head *head;
switch (type) {
case SC_TYPE_ENTRY:
desc = &__event_desc___syscall_entry_unknown;
unknown_dispatch_list = &group->event_notifier_unknown_syscall_dispatch;
- entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
+ entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
break;
case SC_TYPE_EXIT:
desc = &__event_desc___syscall_exit_unknown;
unknown_dispatch_list = &group->event_notifier_exit_unknown_syscall_dispatch;
- entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
+ entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
break;
case SC_TYPE_COMPAT_ENTRY:
desc = &__event_desc___compat_syscall_entry_unknown;
unknown_dispatch_list = &group->event_notifier_compat_unknown_syscall_dispatch;
- entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
+ entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
break;
case SC_TYPE_COMPAT_EXIT:
desc = &__event_desc___compat_syscall_exit_unknown;
unknown_dispatch_list = &group->event_notifier_exit_compat_unknown_syscall_dispatch;
- entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
+ entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
break;
default:
BUG_ON(1);
* Check if already created.
*/
head = utils_borrow_hash_table_bucket(group->event_notifiers_ht.table,
- LTTNG_EVENT_NOTIFIER_HT_SIZE, desc->name);
- lttng_hlist_for_each_entry(notifier, head, hlist) {
- if (notifier->desc == desc &&
- notifier->user_token == base_enabler->user_token)
+ LTTNG_EVENT_NOTIFIER_HT_SIZE, desc->event_name);
+ lttng_hlist_for_each_entry(event_notifier_priv, head, hlist) {
+ if (event_notifier_priv->parent.desc == desc &&
+ event_notifier_priv->parent.user_token == base_enabler->user_token)
found = true;
}
if (found)
goto end;
memset(&event_notifier_param, 0, sizeof(event_notifier_param));
- strncat(event_notifier_param.event.name, desc->name,
- LTTNG_KERNEL_SYM_NAME_LEN - strlen(event_notifier_param.event.name) - 1);
+ strncat(event_notifier_param.event.name, desc->event_name,
+ LTTNG_KERNEL_ABI_SYM_NAME_LEN - strlen(event_notifier_param.event.name) - 1);
- event_notifier_param.event.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+ event_notifier_param.event.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
- event_notifier_param.event.instrumentation = LTTNG_KERNEL_SYSCALL;
+ event_notifier_param.event.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
event_notifier_param.event.u.syscall.abi = abi;
event_notifier_param.event.u.syscall.entryexit = entryexit;
- notifier = _lttng_event_notifier_create(desc, user_token,
- group, &event_notifier_param, NULL,
+ event_notifier = _lttng_event_notifier_create(desc, user_token,
+ error_counter_index, group, &event_notifier_param,
event_notifier_param.event.instrumentation);
- if (IS_ERR(notifier)) {
+ if (IS_ERR(event_notifier)) {
printk(KERN_INFO "Unable to create unknown notifier %s\n",
- desc->name);
+ desc->event_name);
ret = -ENOMEM;
goto end;
}
- hlist_add_head_rcu(¬ifier->u.syscall.node, unknown_dispatch_list);
+ hlist_add_head_rcu(&event_notifier->priv->parent.u.syscall.node, unknown_dispatch_list);
end:
return ret;
static int create_matching_event_notifiers(
struct lttng_event_notifier_enabler *event_notifier_enabler,
- void *filter, const struct trace_syscall_entry *table,
+ const struct trace_syscall_entry *table,
size_t table_len, enum sc_type type)
{
struct lttng_event_notifier_group *group = event_notifier_enabler->group;
- const struct lttng_event_desc *desc;
+ const struct lttng_kernel_event_desc *desc;
uint64_t user_token = event_notifier_enabler->base.user_token;
+ uint64_t error_counter_index = event_notifier_enabler->error_counter_index;
unsigned int i;
int ret = 0;
/* iterate over all syscall and create event_notifier that match */
for (i = 0; i < table_len; i++) {
- struct lttng_event_notifier *event_notifier;
- struct lttng_kernel_event_notifier event_notifier_param;
+ struct lttng_kernel_event_notifier_private *event_notifier_priv;
+ struct lttng_kernel_event_notifier *event_notifier;
+ struct lttng_kernel_abi_event_notifier event_notifier_param;
struct hlist_head *head;
int found = 0;
* Check if already created.
*/
head = utils_borrow_hash_table_bucket(group->event_notifiers_ht.table,
- LTTNG_EVENT_NOTIFIER_HT_SIZE, desc->name);
- lttng_hlist_for_each_entry(event_notifier, head, hlist) {
- if (event_notifier->desc == desc
- && event_notifier->user_token == event_notifier_enabler->base.user_token)
+ LTTNG_EVENT_NOTIFIER_HT_SIZE, desc->event_name);
+ lttng_hlist_for_each_entry(event_notifier_priv, head, hlist) {
+ if (event_notifier_priv->parent.desc == desc
+ && event_notifier_priv->parent.user_token == event_notifier_enabler->base.user_token)
found = 1;
}
if (found)
memset(&event_notifier_param, 0, sizeof(event_notifier_param));
switch (type) {
case SC_TYPE_ENTRY:
- event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
+ event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
break;
case SC_TYPE_EXIT:
- event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_NATIVE;
+ event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_NATIVE;
break;
case SC_TYPE_COMPAT_ENTRY:
- event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_ENTRY;
- event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
+ event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_ENTRY;
+ event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
break;
case SC_TYPE_COMPAT_EXIT:
- event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_SYSCALL_EXIT;
- event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_SYSCALL_ABI_COMPAT;
+ event_notifier_param.event.u.syscall.entryexit = LTTNG_KERNEL_ABI_SYSCALL_EXIT;
+ event_notifier_param.event.u.syscall.abi = LTTNG_KERNEL_ABI_SYSCALL_ABI_COMPAT;
break;
}
- strncat(event_notifier_param.event.name, desc->name,
- LTTNG_KERNEL_SYM_NAME_LEN - strlen(event_notifier_param.event.name) - 1);
- event_notifier_param.event.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- event_notifier_param.event.instrumentation = LTTNG_KERNEL_SYSCALL;
+ strncat(event_notifier_param.event.name, desc->event_name,
+ LTTNG_KERNEL_ABI_SYM_NAME_LEN - strlen(event_notifier_param.event.name) - 1);
+ event_notifier_param.event.name[LTTNG_KERNEL_ABI_SYM_NAME_LEN - 1] = '\0';
+ event_notifier_param.event.instrumentation = LTTNG_KERNEL_ABI_SYSCALL;
- event_notifier = _lttng_event_notifier_create(desc, user_token, group,
- &event_notifier_param, filter,
+ event_notifier = _lttng_event_notifier_create(desc, user_token,
+ error_counter_index, group, &event_notifier_param,
event_notifier_param.event.instrumentation);
if (IS_ERR(event_notifier)) {
printk(KERN_INFO "Unable to create event_notifier %s\n",
- desc->name);
+ desc->event_name);
ret = -ENOMEM;
goto end;
}
- event_notifier->u.syscall.syscall_id = i;
+ event_notifier->priv->parent.u.syscall.syscall_id = i;
}
end:
}
-int lttng_syscals_create_matching_event_notifiers(
- struct lttng_event_notifier_enabler *event_notifier_enabler,
- void *filter)
+int lttng_syscalls_create_matching_event_notifiers(
+ struct lttng_event_notifier_enabler *event_notifier_enabler)
{
int ret;
struct lttng_enabler *base_enabler =
lttng_event_notifier_enabler_as_enabler(event_notifier_enabler);
- enum lttng_kernel_syscall_entryexit entryexit =
+ enum lttng_kernel_abi_syscall_entryexit entryexit =
base_enabler->event_param.u.syscall.entryexit;
- if (entryexit == LTTNG_KERNEL_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_SYSCALL_ENTRYEXIT) {
+ if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT) {
ret = create_matching_event_notifiers(event_notifier_enabler,
- filter, sc_table, ARRAY_SIZE(sc_table), SC_TYPE_ENTRY);
+ sc_table, ARRAY_SIZE(sc_table), SC_TYPE_ENTRY);
if (ret)
goto end;
ret = create_matching_event_notifiers(event_notifier_enabler,
- filter, compat_sc_table, ARRAY_SIZE(compat_sc_table),
+ compat_sc_table, ARRAY_SIZE(compat_sc_table),
SC_TYPE_COMPAT_ENTRY);
if (ret)
goto end;
goto end;
}
- if (entryexit == LTTNG_KERNEL_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_SYSCALL_ENTRYEXIT) {
+ if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT) {
ret = create_matching_event_notifiers(event_notifier_enabler,
- filter, sc_exit_table, ARRAY_SIZE(sc_exit_table),
+ sc_exit_table, ARRAY_SIZE(sc_exit_table),
SC_TYPE_EXIT);
if (ret)
goto end;
goto end;
ret = create_matching_event_notifiers(event_notifier_enabler,
- filter, compat_sc_exit_table, ARRAY_SIZE(compat_sc_exit_table),
+ compat_sc_exit_table, ARRAY_SIZE(compat_sc_exit_table),
SC_TYPE_COMPAT_EXIT);
if (ret)
goto end;
/*
* Unregister the syscall event_notifier probes from the callsites.
*/
-int lttng_syscalls_unregister_event_notifier(
+int lttng_syscalls_unregister_event_notifier_group(
struct lttng_event_notifier_group *event_notifier_group)
{
int ret;
return 0;
}
-int lttng_syscalls_unregister_event(struct lttng_channel *chan)
+int lttng_syscalls_unregister_channel(struct lttng_channel *chan)
{
int ret;
entry = &sc_table[i];
if (!entry->desc)
continue;
- it_name = entry->desc->name;
+ it_name = entry->desc->event_name;
it_name += strlen(SYSCALL_ENTRY_STR);
if (!strcmp(syscall_name, it_name)) {
syscall_nr = i;
entry = &compat_sc_table[i];
if (!entry->desc)
continue;
- it_name = entry->desc->name;
+ it_name = entry->desc->event_name;
it_name += strlen(COMPAT_SYSCALL_ENTRY_STR);
if (!strcmp(syscall_name, it_name)) {
syscall_nr = i;
}
int lttng_syscall_filter_enable_event_notifier(
- struct lttng_event_notifier *notifier)
+ struct lttng_kernel_event_notifier *event_notifier)
{
- struct lttng_event_notifier_group *group = notifier->group;
- unsigned int syscall_id = notifier->u.syscall.syscall_id;
+ struct lttng_event_notifier_group *group = event_notifier->priv->group;
+ unsigned int syscall_id = event_notifier->priv->parent.u.syscall.syscall_id;
struct hlist_head *dispatch_list;
int ret = 0;
- WARN_ON_ONCE(notifier->instrumentation != LTTNG_KERNEL_SYSCALL);
+ WARN_ON_ONCE(event_notifier->priv->parent.instrumentation != LTTNG_KERNEL_ABI_SYSCALL);
ret = lttng_syscall_filter_enable(group->sc_filter,
- notifier->desc->name, notifier->u.syscall.abi,
- notifier->u.syscall.entryexit);
+ event_notifier->priv->parent.desc->event_name,
+ event_notifier->priv->parent.u.syscall.abi,
+ event_notifier->priv->parent.u.syscall.entryexit);
if (ret) {
goto end;
}
- switch (notifier->u.syscall.entryexit) {
+ switch (event_notifier->priv->parent.u.syscall.entryexit) {
case LTTNG_SYSCALL_ENTRY:
- switch (notifier->u.syscall.abi) {
+ switch (event_notifier->priv->parent.u.syscall.abi) {
case LTTNG_SYSCALL_ABI_NATIVE:
dispatch_list = &group->event_notifier_syscall_dispatch[syscall_id];
break;
case LTTNG_SYSCALL_ABI_COMPAT:
dispatch_list = &group->event_notifier_compat_syscall_dispatch[syscall_id];
break;
+ default:
+ ret = -EINVAL;
+ goto end;
}
break;
case LTTNG_SYSCALL_EXIT:
- switch (notifier->u.syscall.abi) {
+ switch (event_notifier->priv->parent.u.syscall.abi) {
case LTTNG_SYSCALL_ABI_NATIVE:
dispatch_list = &group->event_notifier_exit_syscall_dispatch[syscall_id];
break;
case LTTNG_SYSCALL_ABI_COMPAT:
dispatch_list = &group->event_notifier_exit_compat_syscall_dispatch[syscall_id];
break;
+ default:
+ ret = -EINVAL;
+ goto end;
}
break;
+ default:
+ ret = -EINVAL;
+ goto end;
}
- hlist_add_head_rcu(¬ifier->u.syscall.node, dispatch_list);
+ hlist_add_head_rcu(&event_notifier->priv->parent.u.syscall.node, dispatch_list);
end:
return ret ;
int lttng_syscall_filter_enable_event(
struct lttng_channel *channel,
- struct lttng_event *event)
+ struct lttng_kernel_event_recorder *event_recorder)
{
- WARN_ON_ONCE(event->instrumentation != LTTNG_KERNEL_SYSCALL);
+ WARN_ON_ONCE(event_recorder->priv->parent.instrumentation != LTTNG_KERNEL_ABI_SYSCALL);
return lttng_syscall_filter_enable(channel->sc_filter,
- event->desc->name, event->u.syscall.abi,
- event->u.syscall.entryexit);
+ event_recorder->priv->parent.desc->event_name,
+ event_recorder->priv->parent.u.syscall.abi,
+ event_recorder->priv->parent.u.syscall.entryexit);
}
static
}
int lttng_syscall_filter_disable_event_notifier(
- struct lttng_event_notifier *notifier)
+ struct lttng_kernel_event_notifier *event_notifier)
{
- struct lttng_event_notifier_group *group = notifier->group;
+ struct lttng_event_notifier_group *group = event_notifier->priv->group;
int ret;
- WARN_ON_ONCE(notifier->instrumentation != LTTNG_KERNEL_SYSCALL);
+ WARN_ON_ONCE(event_notifier->priv->parent.instrumentation != LTTNG_KERNEL_ABI_SYSCALL);
ret = lttng_syscall_filter_disable(group->sc_filter,
- notifier->desc->name, notifier->u.syscall.abi,
- notifier->u.syscall.entryexit);
+ event_notifier->priv->parent.desc->event_name,
+ event_notifier->priv->parent.u.syscall.abi,
+ event_notifier->priv->parent.u.syscall.entryexit);
WARN_ON_ONCE(ret != 0);
- hlist_del_rcu(¬ifier->u.syscall.node);
+ hlist_del_rcu(&event_notifier->priv->parent.u.syscall.node);
return 0;
}
int lttng_syscall_filter_disable_event(
struct lttng_channel *channel,
- struct lttng_event *event)
+ struct lttng_kernel_event_recorder *event_recorder)
{
return lttng_syscall_filter_disable(channel->sc_filter,
- event->desc->name, event->u.syscall.abi,
- event->u.syscall.entryexit);
+ event_recorder->priv->parent.desc->event_name,
+ event_recorder->priv->parent.u.syscall.abi,
+ event_recorder->priv->parent.u.syscall.entryexit);
}
static
return 0;
if (table == sc_table) {
index = entry - table;
- name = &entry->desc->name[strlen(SYSCALL_ENTRY_STR)];
+ name = &entry->desc->event_name[strlen(SYSCALL_ENTRY_STR)];
} else {
index = (entry - table) + ARRAY_SIZE(sc_table);
- name = &entry->desc->name[strlen(COMPAT_SYSCALL_ENTRY_STR)];
+ name = &entry->desc->event_name[strlen(COMPAT_SYSCALL_ENTRY_STR)];
}
seq_printf(m, "syscall { index = %lu; name = %s; bitness = %u; };\n",
index, name, bitness);
* A syscall is enabled if it is traced for either entry or exit.
*/
long lttng_channel_syscall_mask(struct lttng_channel *channel,
- struct lttng_kernel_syscall_mask __user *usyscall_mask)
+ struct lttng_kernel_abi_syscall_mask __user *usyscall_mask)
{
uint32_t len, sc_tables_len, bitmask_len;
int ret = 0, bit;
char state;
if (channel->sc_table) {
- if (!READ_ONCE(channel->syscall_all) && filter)
+ if (!(READ_ONCE(channel->syscall_all_entry)
+ || READ_ONCE(channel->syscall_all_exit)) && filter)
state = test_bit(bit, filter->sc_entry)
|| test_bit(bit, filter->sc_exit);
else
char state;
if (channel->compat_sc_table) {
- if (!READ_ONCE(channel->syscall_all) && filter)
+ if (!(READ_ONCE(channel->syscall_all_entry)
+ || READ_ONCE(channel->syscall_all_exit)) && filter)
state = test_bit(bit - ARRAY_SIZE(sc_table),
filter->sc_compat_entry)
|| test_bit(bit - ARRAY_SIZE(sc_table),
projects / lttng-modules.git / blobdiff