-/*
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
* lttng-syscalls.c
*
* LTTng syscall probes.
*
* 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/module.h>
#include <linux/stringify.h>
#include <linux/file.h>
#include <linux/anon_inodes.h>
+#include <linux/fcntl.h>
#include <asm/ptrace.h>
#include <asm/syscall.h>
-#include "lib/bitfield.h"
-#include "wrapper/tracepoint.h"
-#include "wrapper/file.h"
-#include "lttng-events.h"
+#include <lttng/bitfield.h>
+#include <wrapper/tracepoint.h>
+#include <wrapper/file.h>
+#include <wrapper/rcu.h>
+#include <wrapper/syscall.h>
+#include <lttng/events.h>
#ifndef CONFIG_COMPAT
# ifndef is_compat_task
# endif
#endif
+/* in_compat_syscall appears in kernel 4.6. */
+#ifndef in_compat_syscall
+ #define in_compat_syscall() is_compat_task()
+#endif
+
enum sc_type {
SC_TYPE_ENTRY,
SC_TYPE_EXIT,
struct old_utsname;
struct sel_arg_struct;
struct mmap_arg_struct;
+struct file_handle;
+struct user_msghdr;
+
+/*
+ * Forward declaration for kernels >= 5.6
+ */
+struct timex;
+struct timeval;
+struct itimerval;
+struct itimerspec;
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+typedef __kernel_old_time_t time_t;
+#endif
#ifdef IA32_NR_syscalls
#define NR_compat_syscalls IA32_NR_syscalls
#define LTTNG_PACKAGE_BUILD
#define CREATE_TRACE_POINTS
#define TP_MODULE_NOINIT
-#define TRACE_INCLUDE_PATH ../instrumentation/syscalls/headers
+#define TRACE_INCLUDE_PATH instrumentation/syscalls/headers
#define PARAMS(args...) args
/* Handle unknown syscalls */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM syscalls_unknown
-#include "instrumentation/syscalls/headers/syscalls_unknown.h"
+#include <instrumentation/syscalls/headers/syscalls_unknown.h>
#undef TRACE_SYSTEM
#define SC_ENTER
/* Hijack probe callback for system call enter */
#undef TP_PROBE_CB
#define TP_PROBE_CB(_template) &syscall_entry_probe
-#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _struct, _assign, _printk) \
+#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \
LTTNG_TRACEPOINT_EVENT(syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code, _struct, _assign, _printk) \
+ PARAMS(_fields))
+#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \
LTTNG_TRACEPOINT_EVENT_CODE(syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_locvar), PARAMS(_code), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _struct, _assign, _printk) \
- LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_entry_##_name, PARAMS(_struct), PARAMS(_assign), \
- PARAMS(_printk))
+ PARAMS(_locvar), PARAMS(_code_pre), \
+ PARAMS(_fields), PARAMS(_code_post))
+#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_entry_##_name, PARAMS(_fields))
#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_entry_##_template, syscall_entry_##_name)
+/* Enumerations only defined at first inclusion. */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) \
+ LTTNG_TRACEPOINT_ENUM(_name, PARAMS(_values))
#undef TRACE_SYSTEM
#define TRACE_SYSTEM syscall_entry_integers
#define TRACE_INCLUDE_FILE syscalls_integers
-#include "instrumentation/syscalls/headers/syscalls_integers.h"
+#include <instrumentation/syscalls/headers/syscalls_integers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
#define TRACE_SYSTEM syscall_entry_pointers
#define TRACE_INCLUDE_FILE syscalls_pointers
-#include "instrumentation/syscalls/headers/syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/syscalls_pointers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
#undef SC_LTTNG_TRACEPOINT_EVENT_CODE
#undef SC_LTTNG_TRACEPOINT_EVENT
#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
/* Hijack probe callback for compat system call enter */
#define TP_PROBE_CB(_template) &syscall_entry_probe
-#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _struct, _assign, _printk) \
+#define LTTNG_SC_COMPAT
+#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \
LTTNG_TRACEPOINT_EVENT(compat_syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_struct), PARAMS(_assign), \
- PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code, _struct, _assign, _printk) \
+ PARAMS(_fields))
+#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \
LTTNG_TRACEPOINT_EVENT_CODE(compat_syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_locvar), PARAMS(_code), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _struct, _assign, _printk) \
- LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(compat_syscall_entry_##_name, PARAMS(_struct), \
- PARAMS(_assign), PARAMS(_printk))
+ PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post))
+#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(compat_syscall_entry_##_name, PARAMS(_fields))
#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(compat_syscall_entry_##_template, \
compat_syscall_entry_##_name)
+/* Enumerations only defined at inital inclusion (not here). */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values)
#define TRACE_SYSTEM compat_syscall_entry_integers
#define TRACE_INCLUDE_FILE compat_syscalls_integers
-#include "instrumentation/syscalls/headers/compat_syscalls_integers.h"
+#include <instrumentation/syscalls/headers/compat_syscalls_integers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
#define TRACE_SYSTEM compat_syscall_entry_pointers
#define TRACE_INCLUDE_FILE compat_syscalls_pointers
-#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/compat_syscalls_pointers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
#undef SC_LTTNG_TRACEPOINT_EVENT_CODE
#undef SC_LTTNG_TRACEPOINT_EVENT
#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
#undef TP_PROBE_CB
#undef _TRACE_SYSCALLS_INTEGERS_H
#undef _TRACE_SYSCALLS_POINTERS_H
+#undef LTTNG_SC_COMPAT
#undef SC_ENTER
/* Hijack probe callback for system call exit */
#define TP_PROBE_CB(_template) &syscall_exit_probe
-#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _struct, _assign, _printk) \
+#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \
LTTNG_TRACEPOINT_EVENT(syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code, _struct, _assign, _printk) \
+ PARAMS(_fields))
+#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \
LTTNG_TRACEPOINT_EVENT_CODE(syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_locvar), PARAMS(_code), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _struct, _assign, _printk) \
- LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_exit_##_name, PARAMS(_struct), \
- PARAMS(_assign), PARAMS(_printk))
+ PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post))
+#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_exit_##_name, PARAMS(_fields))
#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_exit_##_template, \
syscall_exit_##_name)
+/* Enumerations only defined at inital inclusion (not here). */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values)
#define TRACE_SYSTEM syscall_exit_integers
#define TRACE_INCLUDE_FILE syscalls_integers
-#include "instrumentation/syscalls/headers/syscalls_integers.h"
+#include <instrumentation/syscalls/headers/syscalls_integers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
#define TRACE_SYSTEM syscall_exit_pointers
#define TRACE_INCLUDE_FILE syscalls_pointers
-#include "instrumentation/syscalls/headers/syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/syscalls_pointers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
#undef SC_LTTNG_TRACEPOINT_EVENT_CODE
#undef SC_LTTNG_TRACEPOINT_EVENT
#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
/* Hijack probe callback for compat system call exit */
#define TP_PROBE_CB(_template) &syscall_exit_probe
-#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _struct, _assign, _printk) \
+#define LTTNG_SC_COMPAT
+#define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \
LTTNG_TRACEPOINT_EVENT(compat_syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code, _struct, _assign, _printk) \
+ PARAMS(_fields))
+#define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \
LTTNG_TRACEPOINT_EVENT_CODE(compat_syscall_exit_##_name, PARAMS(_proto), PARAMS(_args), \
- PARAMS(_locvar), PARAMS(_code), \
- PARAMS(_struct), PARAMS(_assign), PARAMS(_printk))
-#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _struct, _assign, _printk) \
- LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(compat_syscall_exit_##_name, PARAMS(_struct), \
- PARAMS(_assign), PARAMS(_printk))
+ PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post))
+#define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \
+ LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(compat_syscall_exit_##_name, PARAMS(_fields))
#define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \
LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(compat_syscall_exit_##_template, \
compat_syscall_exit_##_name)
+/* Enumerations only defined at inital inclusion (not here). */
+#define SC_LTTNG_TRACEPOINT_ENUM(_name, _values)
#define TRACE_SYSTEM compat_syscall_exit_integers
#define TRACE_INCLUDE_FILE compat_syscalls_integers
-#include "instrumentation/syscalls/headers/compat_syscalls_integers.h"
+#include <instrumentation/syscalls/headers/compat_syscalls_integers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
#define TRACE_SYSTEM compat_syscall_exit_pointers
#define TRACE_INCLUDE_FILE compat_syscalls_pointers
-#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/compat_syscalls_pointers.h>
#undef TRACE_INCLUDE_FILE
#undef TRACE_SYSTEM
+#undef SC_LTTNG_TRACEPOINT_ENUM
#undef SC_LTTNG_TRACEPOINT_EVENT_CODE
#undef SC_LTTNG_TRACEPOINT_EVENT
#undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS
#undef TP_PROBE_CB
#undef _TRACE_SYSCALLS_INTEGERS_H
#undef _TRACE_SYSCALLS_POINTERS_H
+#undef LTTNG_SC_COMPAT
#undef SC_EXIT
/* Syscall enter tracing table */
static const struct trace_syscall_entry sc_table[] = {
-#include "instrumentation/syscalls/headers/syscalls_integers.h"
-#include "instrumentation/syscalls/headers/syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/syscalls_integers.h>
+#include <instrumentation/syscalls/headers/syscalls_pointers.h>
};
#undef TRACE_SYSCALL_TABLE
/* Compat syscall enter table */
const struct trace_syscall_entry compat_sc_table[] = {
-#include "instrumentation/syscalls/headers/compat_syscalls_integers.h"
-#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/compat_syscalls_integers.h>
+#include <instrumentation/syscalls/headers/compat_syscalls_pointers.h>
};
#undef SC_ENTER
/* Syscall exit table */
static const struct trace_syscall_entry sc_exit_table[] = {
-#include "instrumentation/syscalls/headers/syscalls_integers.h"
-#include "instrumentation/syscalls/headers/syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/syscalls_integers.h>
+#include <instrumentation/syscalls/headers/syscalls_pointers.h>
};
#undef TRACE_SYSCALL_TABLE
/* Compat syscall exit table */
const struct trace_syscall_entry compat_sc_exit_table[] = {
-#include "instrumentation/syscalls/headers/compat_syscalls_integers.h"
-#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
+#include <instrumentation/syscalls/headers/compat_syscalls_integers.h>
+#include <instrumentation/syscalls/headers/compat_syscalls_pointers.h>
};
#undef SC_EXIT
static void syscall_entry_unknown(struct lttng_event *event,
struct pt_regs *regs, unsigned int id)
{
- unsigned long args[UNKNOWN_SYSCALL_NRARGS];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
- if (unlikely(is_compat_task()))
+ 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);
const struct trace_syscall_entry *table, *entry;
size_t table_len;
- if (unlikely(is_compat_task())) {
+ if (unlikely(in_compat_syscall())) {
struct lttng_syscall_filter *filter;
- filter = rcu_dereference(chan->sc_filter);
+ filter = lttng_rcu_dereference(chan->sc_filter);
if (filter) {
if (id < 0 || id >= NR_compat_syscalls
|| !test_bit(id, filter->sc_compat)) {
} else {
struct lttng_syscall_filter *filter;
- filter = rcu_dereference(chan->sc_filter);
+ filter = lttng_rcu_dereference(chan->sc_filter);
if (filter) {
if (id < 0 || id >= NR_syscalls
|| !test_bit(id, filter->sc)) {
syscall_entry_unknown(unknown_event, regs, id);
return;
}
- if (unlikely(is_compat_task()))
+ if (unlikely(in_compat_syscall()))
event = chan->compat_sc_table[id];
else
event = chan->sc_table[id];
case 1:
{
void (*fptr)(void *__data, unsigned long arg0) = entry->func;
- unsigned long args[1];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, args[0]);
break;
}
void (*fptr)(void *__data,
unsigned long arg0,
unsigned long arg1) = entry->func;
- unsigned long args[2];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, args[0], args[1]);
break;
}
unsigned long arg0,
unsigned long arg1,
unsigned long arg2) = entry->func;
- unsigned long args[3];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, args[0], args[1], args[2]);
break;
}
unsigned long arg1,
unsigned long arg2,
unsigned long arg3) = entry->func;
- unsigned long args[4];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, args[0], args[1], args[2], args[3]);
break;
}
unsigned long arg2,
unsigned long arg3,
unsigned long arg4) = entry->func;
- unsigned long args[5];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, args[0], args[1], args[2], args[3], args[4]);
break;
}
unsigned long arg3,
unsigned long arg4,
unsigned long arg5) = entry->func;
- unsigned long args[6];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, args[0], args[1], args[2],
args[3], args[4], args[5]);
break;
static void syscall_exit_unknown(struct lttng_event *event,
struct pt_regs *regs, int id, long ret)
{
- unsigned long args[UNKNOWN_SYSCALL_NRARGS];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
- if (unlikely(is_compat_task()))
+ lttng_syscall_get_arguments(current, regs, args);
+ if (unlikely(in_compat_syscall()))
__event_probe__compat_syscall_exit_unknown(event, id, ret,
args);
else
long id;
id = syscall_get_nr(current, regs);
- if (unlikely(is_compat_task())) {
+ if (unlikely(in_compat_syscall())) {
struct lttng_syscall_filter *filter;
- filter = rcu_dereference(chan->sc_filter);
+ filter = lttng_rcu_dereference(chan->sc_filter);
if (filter) {
if (id < 0 || id >= NR_compat_syscalls
|| !test_bit(id, filter->sc_compat)) {
} else {
struct lttng_syscall_filter *filter;
- filter = rcu_dereference(chan->sc_filter);
+ filter = lttng_rcu_dereference(chan->sc_filter);
if (filter) {
if (id < 0 || id >= NR_syscalls
|| !test_bit(id, filter->sc)) {
syscall_exit_unknown(unknown_event, regs, id, ret);
return;
}
- if (unlikely(is_compat_task()))
+ if (unlikely(in_compat_syscall()))
event = chan->compat_sc_exit_table[id];
else
event = chan->sc_exit_table[id];
void (*fptr)(void *__data,
long ret,
unsigned long arg0) = entry->func;
- unsigned long args[1];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, ret, args[0]);
break;
}
long ret,
unsigned long arg0,
unsigned long arg1) = entry->func;
- unsigned long args[2];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, ret, args[0], args[1]);
break;
}
unsigned long arg0,
unsigned long arg1,
unsigned long arg2) = entry->func;
- unsigned long args[3];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, ret, args[0], args[1], args[2]);
break;
}
unsigned long arg1,
unsigned long arg2,
unsigned long arg3) = entry->func;
- unsigned long args[4];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, ret, args[0], args[1], args[2], args[3]);
break;
}
unsigned long arg2,
unsigned long arg3,
unsigned long arg4) = entry->func;
- unsigned long args[5];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, ret, args[0], args[1], args[2], args[3], args[4]);
break;
}
unsigned long arg3,
unsigned long arg4,
unsigned long arg5) = entry->func;
- unsigned long args[6];
+ unsigned long args[LTTNG_SYSCALL_NR_ARGS];
- syscall_get_arguments(current, regs, 0, entry->nrargs, args);
+ lttng_syscall_get_arguments(current, regs, args);
fptr(event, ret, args[0], args[1], args[2],
args[3], args[4], args[5]);
break;
}
}
-/* noinline to diminish caller stack size */
+/*
+ * noinline to diminish caller stack size.
+ * Should be called with sessions lock held.
+ */
static
int fill_table(const struct trace_syscall_entry *table, size_t table_len,
struct lttng_event **chan_table, struct lttng_channel *chan,
strncat(ev.name, desc->name,
LTTNG_KERNEL_SYM_NAME_LEN - strlen(ev.name) - 1);
ev.name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
- ev.instrumentation = LTTNG_KERNEL_NOOP;
- chan_table[i] = lttng_event_create(chan, &ev, filter,
- desc);
+ 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])) {
/*
return 0;
}
+/*
+ * Should be called with sessions lock held.
+ */
int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
{
struct lttng_kernel_event ev;
int ret;
- wrapper_vmalloc_sync_all();
+ wrapper_vmalloc_sync_mappings();
if (!chan->sc_table) {
/* create syscall table mapping syscall to events */
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_NOOP;
- chan->sc_unknown = lttng_event_create(chan, &ev, filter,
- desc);
+ ev.instrumentation = LTTNG_KERNEL_SYSCALL;
+ 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);
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_NOOP;
- chan->sc_compat_unknown = lttng_event_create(chan, &ev, filter,
- desc);
+ ev.instrumentation = LTTNG_KERNEL_SYSCALL;
+ 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);
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_NOOP;
- chan->compat_sc_exit_unknown = lttng_event_create(chan, &ev,
- filter, desc);
+ ev.instrumentation = LTTNG_KERNEL_SYSCALL;
+ 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);
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_NOOP;
- chan->sc_exit_unknown = lttng_event_create(chan, &ev, filter,
- desc);
+ ev.instrumentation = LTTNG_KERNEL_SYSCALL;
+ 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);
if (!chan->sc_table)
return 0;
if (chan->sys_enter_registered) {
- ret = lttng_wrapper_tracepoint_probe_unregister("sys_exit",
- (void *) syscall_exit_probe, chan);
+ ret = lttng_wrapper_tracepoint_probe_unregister("sys_enter",
+ (void *) syscall_entry_probe, chan);
if (ret)
return ret;
chan->sys_enter_registered = 0;
}
if (chan->sys_exit_registered) {
- ret = lttng_wrapper_tracepoint_probe_unregister("sys_enter",
- (void *) syscall_entry_probe, chan);
+ ret = lttng_wrapper_tracepoint_probe_unregister("sys_exit",
+ (void *) syscall_exit_probe, chan);
if (ret)
return ret;
chan->sys_exit_registered = 0;
filter = channel->sc_filter;
for (bit = 0; bit < ARRAY_SIZE(sc_table); bit++) {
- bool state;
+ char state;
if (channel->sc_table) {
if (filter)
bt_bitfield_write_be(tmp_mask, char, bit, 1, state);
}
for (; bit < sc_tables_len; bit++) {
- bool state;
+ char state;
if (channel->compat_sc_table) {
if (filter)
if (ret < 0)
goto open_error;
fd_install(file_fd, syscall_list_file);
- if (file_fd < 0) {
- ret = file_fd;
- goto fd_error;
- }
return file_fd;
open_error:
projects / lttng-modules.git / blobdiff