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Extract system call exit return value
[lttng-modules.git]
/
lttng-syscalls.c
diff --git
a/lttng-syscalls.c
b/lttng-syscalls.c
index 60c5fd997a4b42c3d5b5a9a937d959bfa65c56f3..029c806bfb4595accea7eb9d893da412abc7f07f 100644
(file)
--- a/
lttng-syscalls.c
+++ b/
lttng-syscalls.c
@@
-92,6
+92,14
@@
struct mmap_arg_struct;
#include "instrumentation/syscalls/headers/syscalls_unknown.h"
#undef TRACE_SYSTEM
#include "instrumentation/syscalls/headers/syscalls_unknown.h"
#undef TRACE_SYSTEM
+#define SC_ENTER
+
+#undef SC_EXIT_PROTO
+#define SC_EXIT_PROTO(...)
+#undef SC_EXIT_ARGS
+#define SC_EXIT_ARGS(...)
+#undef sc_exit
+#define sc_exit(...)
/* Hijack probe callback for system call enter */
#undef TP_PROBE_CB
/* Hijack probe callback for system call enter */
#undef TP_PROBE_CB
@@
-152,6
+160,16
@@
struct mmap_arg_struct;
#undef _TRACE_SYSCALLS_integers_H
#undef _TRACE_SYSCALLS_pointers_H
#undef _TRACE_SYSCALLS_integers_H
#undef _TRACE_SYSCALLS_pointers_H
+#undef SC_ENTER
+
+#define SC_EXIT
+
+#undef SC_EXIT_PROTO
+#define SC_EXIT_PROTO(...) __VA_ARGS__
+#undef SC_EXIT_ARGS
+#define SC_EXIT_ARGS(...) __VA_ARGS__
+#undef sc_exit
+#define sc_exit(...) __VA_ARGS__
/* Hijack probe callback for system call exit */
#define TP_PROBE_CB(_template) &syscall_exit_probe
/* Hijack probe callback for system call exit */
#define TP_PROBE_CB(_template) &syscall_exit_probe
@@
-210,6
+228,7
@@
struct mmap_arg_struct;
#undef _TRACE_SYSCALLS_integers_H
#undef _TRACE_SYSCALLS_pointers_H
#undef _TRACE_SYSCALLS_integers_H
#undef _TRACE_SYSCALLS_pointers_H
+#undef SC_EXIT
#undef TP_MODULE_NOINIT
#undef LTTNG_PACKAGE_BUILD
#undef TP_MODULE_NOINIT
#undef LTTNG_PACKAGE_BUILD
@@
-224,6
+243,11
@@
struct trace_syscall_entry {
#define CREATE_SYSCALL_TABLE
#define CREATE_SYSCALL_TABLE
+#define SC_ENTER
+
+#undef sc_exit
+#define sc_exit(...)
+
#undef TRACE_SYSCALL_TABLE
#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \
[ _nr ] = { \
#undef TRACE_SYSCALL_TABLE
#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \
[ _nr ] = { \
@@
-254,6
+278,13
@@
const struct trace_syscall_entry compat_sc_table[] = {
#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
};
#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
};
+#undef SC_ENTER
+
+#define SC_EXIT
+
+#undef sc_exit
+#define sc_exit(...) __VA_ARGS__
+
#undef TRACE_SYSCALL_TABLE
#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \
[ _nr ] = { \
#undef TRACE_SYSCALL_TABLE
#define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \
[ _nr ] = { \
@@
-284,6
+315,8
@@
const struct trace_syscall_entry compat_sc_exit_table[] = {
#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
};
#include "instrumentation/syscalls/headers/compat_syscalls_pointers.h"
};
+#undef SC_EXIT
+
#undef CREATE_SYSCALL_TABLE
struct lttng_syscall_filter {
#undef CREATE_SYSCALL_TABLE
struct lttng_syscall_filter {
@@
-511,47
+544,51
@@
void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
switch (entry->nrargs) {
case 0:
{
switch (entry->nrargs) {
case 0:
{
- void (*fptr)(void *__data) = entry->func;
+ void (*fptr)(void *__data
, long ret
) = entry->func;
- fptr(event);
+ fptr(event
, ret
);
break;
}
case 1:
{
void (*fptr)(void *__data,
break;
}
case 1:
{
void (*fptr)(void *__data,
+ long ret,
unsigned long arg0) = entry->func;
unsigned long args[1];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
unsigned long arg0) = entry->func;
unsigned long args[1];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
- fptr(event, args[0]);
+ fptr(event,
ret,
args[0]);
break;
}
case 2:
{
void (*fptr)(void *__data,
break;
}
case 2:
{
void (*fptr)(void *__data,
+ long ret,
unsigned long arg0,
unsigned long arg1) = entry->func;
unsigned long args[2];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
unsigned long arg0,
unsigned long arg1) = entry->func;
unsigned long args[2];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
- fptr(event, args[0], args[1]);
+ fptr(event,
ret,
args[0], args[1]);
break;
}
case 3:
{
void (*fptr)(void *__data,
break;
}
case 3:
{
void (*fptr)(void *__data,
+ long ret,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2) = entry->func;
unsigned long args[3];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
unsigned long arg0,
unsigned long arg1,
unsigned long arg2) = entry->func;
unsigned long args[3];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
- fptr(event, args[0], args[1], args[2]);
+ fptr(event,
ret,
args[0], args[1], args[2]);
break;
}
case 4:
{
void (*fptr)(void *__data,
break;
}
case 4:
{
void (*fptr)(void *__data,
+ long ret,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
@@
-559,12
+596,13
@@
void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
unsigned long args[4];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
unsigned long args[4];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
- fptr(event, args[0], args[1], args[2], args[3]);
+ fptr(event,
ret,
args[0], args[1], args[2], args[3]);
break;
}
case 5:
{
void (*fptr)(void *__data,
break;
}
case 5:
{
void (*fptr)(void *__data,
+ long ret,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
@@
-573,12
+611,13
@@
void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
unsigned long args[5];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
unsigned long args[5];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
- fptr(event, args[0], args[1], args[2], args[3], args[4]);
+ fptr(event,
ret,
args[0], args[1], args[2], args[3], args[4]);
break;
}
case 6:
{
void (*fptr)(void *__data,
break;
}
case 6:
{
void (*fptr)(void *__data,
+ long ret,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2,
@@
-588,7
+627,7
@@
void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
unsigned long args[6];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
unsigned long args[6];
syscall_get_arguments(current, regs, 0, entry->nrargs, args);
- fptr(event, args[0], args[1], args[2],
+ fptr(event,
ret,
args[0], args[1], args[2],
args[3], args[4], args[5]);
break;
}
args[3], args[4], args[5]);
break;
}
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