#include <linux/in6.h>
#include <linux/seq_file.h>
#include <linux/stringify.h>
+#include <linux/file.h>
+#include <linux/anon_inodes.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"
#ifndef CONFIG_COMPAT
struct old_utsname;
struct sel_arg_struct;
struct mmap_arg_struct;
+struct file_handle;
#ifdef IA32_NR_syscalls
#define NR_compat_syscalls IA32_NR_syscalls
#define PARAMS(args...) args
/* Handle unknown syscalls */
+#undef TRACE_SYSTEM
#define TRACE_SYSTEM syscalls_unknown
#include "instrumentation/syscalls/headers/syscalls_unknown.h"
#undef TRACE_SYSTEM
filter = rcu_dereference(chan->sc_filter);
if (filter) {
- if (id >= NR_compat_syscalls
+ if (id < 0 || id >= NR_compat_syscalls
|| !test_bit(id, filter->sc_compat)) {
/* System call filtered out. */
return;
filter = rcu_dereference(chan->sc_filter);
if (filter) {
- if (id >= NR_syscalls
+ if (id < 0 || id >= NR_syscalls
|| !test_bit(id, filter->sc)) {
/* System call filtered out. */
return;
table_len = ARRAY_SIZE(sc_table);
unknown_event = chan->sc_unknown;
}
- if (unlikely(id >= table_len)) {
+ if (unlikely(id < 0 || id >= table_len)) {
syscall_entry_unknown(unknown_event, regs, id);
return;
}
}
static void syscall_exit_unknown(struct lttng_event *event,
- struct pt_regs *regs, unsigned int id, long ret)
+ struct pt_regs *regs, int id, long ret)
{
unsigned long args[UNKNOWN_SYSCALL_NRARGS];
filter = rcu_dereference(chan->sc_filter);
if (filter) {
- if (id >= NR_compat_syscalls
+ if (id < 0 || id >= NR_compat_syscalls
|| !test_bit(id, filter->sc_compat)) {
/* System call filtered out. */
return;
filter = rcu_dereference(chan->sc_filter);
if (filter) {
- if (id >= NR_syscalls
+ if (id < 0 || id >= NR_syscalls
|| !test_bit(id, filter->sc)) {
/* System call filtered out. */
return;
table_len = ARRAY_SIZE(sc_exit_table);
unknown_event = chan->sc_exit_unknown;
}
- if (unlikely(id >= table_len)) {
+ if (unlikely(id < 0 || id >= table_len)) {
syscall_exit_unknown(unknown_event, regs, id, ret);
return;
}
filter = channel->sc_filter;
for (bit = 0; bit < ARRAY_SIZE(sc_table); bit++) {
- bt_bitfield_write_be(tmp_mask, char, bit, 1,
- filter ? test_bit(bit, filter->sc) : 1);
+ bool state;
+
+ if (channel->sc_table) {
+ if (filter)
+ state = test_bit(bit, filter->sc);
+ else
+ state = 1;
+ } else {
+ state = 0;
+ }
+ bt_bitfield_write_be(tmp_mask, char, bit, 1, state);
}
for (; bit < sc_tables_len; bit++) {
- bt_bitfield_write_be(tmp_mask, char, bit, 1,
- filter ? test_bit(bit - ARRAY_SIZE(sc_table),
- filter->sc_compat) : 1);
+ bool state;
+
+ if (channel->compat_sc_table) {
+ if (filter)
+ state = test_bit(bit - ARRAY_SIZE(sc_table),
+ filter->sc_compat);
+ else
+ state = 1;
+ } else {
+ state = 0;
+ }
+ bt_bitfield_write_be(tmp_mask, char, bit, 1, state);
}
if (copy_to_user(usyscall_mask->mask, tmp_mask, bitmask_len))
ret = -EFAULT;
kfree(tmp_mask);
return ret;
}
+
+int lttng_abi_syscall_list(void)
+{
+ struct file *syscall_list_file;
+ int file_fd, ret;
+
+ file_fd = lttng_get_unused_fd();
+ if (file_fd < 0) {
+ ret = file_fd;
+ goto fd_error;
+ }
+
+ syscall_list_file = anon_inode_getfile("[lttng_syscall_list]",
+ <tng_syscall_list_fops,
+ NULL, O_RDWR);
+ if (IS_ERR(syscall_list_file)) {
+ ret = PTR_ERR(syscall_list_file);
+ goto file_error;
+ }
+ ret = lttng_syscall_list_fops.open(NULL, syscall_list_file);
+ 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:
+ fput(syscall_list_file);
+file_error:
+ put_unused_fd(file_fd);
+fd_error:
+ return ret;
+}