return copy_from_user(dest, vaddr, size) ? -EFAULT : 0;
}
+
+static nokprobe_inline int
+probe_mem_read_user(void *dest, void *src, size_t size)
+{
+ return probe_mem_read(dest, src, size);
+}
+
/*
* Fetch a null-terminated string. Caller MUST set *(u32 *)dest with max
* length and relative data location.
return ret;
}
+static nokprobe_inline int
+fetch_store_string_user(unsigned long addr, void *dest, void *base)
+{
+ return fetch_store_string(addr, dest, base);
+}
+
/* Return the length of string -- including null terminal byte */
static nokprobe_inline int
fetch_store_strlen(unsigned long addr)
return (len > MAX_STRING_SIZE) ? 0 : len;
}
+static nokprobe_inline int
+fetch_store_strlen_user(unsigned long addr)
+{
+ return fetch_store_strlen(addr);
+}
+
static unsigned long translate_user_vaddr(unsigned long file_offset)
{
unsigned long base_addr;
{
struct trace_uprobe *tu = to_trace_uprobe(ev);
- return strcmp(trace_event_name(&tu->tp.call), event) == 0 &&
- (!system || strcmp(tu->tp.call.class->system, system) == 0);
+ return strcmp(trace_probe_name(&tu->tp), event) == 0 &&
+ (!system || strcmp(trace_probe_group_name(&tu->tp), system) == 0);
}
/*
alloc_trace_uprobe(const char *group, const char *event, int nargs, bool is_ret)
{
struct trace_uprobe *tu;
-
- if (!event || !group)
- return ERR_PTR(-EINVAL);
+ int ret;
tu = kzalloc(SIZEOF_TRACE_UPROBE(nargs), GFP_KERNEL);
if (!tu)
return ERR_PTR(-ENOMEM);
- tu->tp.call.class = &tu->tp.class;
- tu->tp.call.name = kstrdup(event, GFP_KERNEL);
- if (!tu->tp.call.name)
- goto error;
-
- tu->tp.class.system = kstrdup(group, GFP_KERNEL);
- if (!tu->tp.class.system)
+ ret = trace_probe_init(&tu->tp, event, group);
+ if (ret < 0)
goto error;
dyn_event_init(&tu->devent, &trace_uprobe_ops);
- INIT_LIST_HEAD(&tu->tp.files);
tu->consumer.handler = uprobe_dispatcher;
if (is_ret)
tu->consumer.ret_handler = uretprobe_dispatcher;
return tu;
error:
- kfree(tu->tp.call.name);
kfree(tu);
- return ERR_PTR(-ENOMEM);
+ return ERR_PTR(ret);
}
static void free_trace_uprobe(struct trace_uprobe *tu)
{
- int i;
-
if (!tu)
return;
- for (i = 0; i < tu->tp.nr_args; i++)
- traceprobe_free_probe_arg(&tu->tp.args[i]);
-
path_put(&tu->path);
- kfree(tu->tp.call.class->system);
- kfree(tu->tp.call.name);
+ trace_probe_cleanup(&tu->tp);
kfree(tu->filename);
kfree(tu);
}
struct trace_uprobe *tu;
for_each_trace_uprobe(tu, pos)
- if (strcmp(trace_event_name(&tu->tp.call), event) == 0 &&
- strcmp(tu->tp.call.class->system, group) == 0)
+ if (strcmp(trace_probe_name(&tu->tp), event) == 0 &&
+ strcmp(trace_probe_group_name(&tu->tp), group) == 0)
return tu;
return NULL;
struct trace_uprobe *tmp, *old = NULL;
struct inode *new_inode = d_real_inode(new->path.dentry);
- old = find_probe_event(trace_event_name(&new->tp.call),
- new->tp.call.class->system);
+ old = find_probe_event(trace_probe_name(&new->tp),
+ trace_probe_group_name(&new->tp));
for_each_trace_uprobe(tmp, pos) {
if ((old ? old != tmp : true) &&
goto error;
}
+ ret = traceprobe_set_print_fmt(&tu->tp, is_ret_probe(tu));
+ if (ret < 0)
+ goto error;
+
ret = register_trace_uprobe(tu);
if (!ret)
goto out;
char c = is_ret_probe(tu) ? 'r' : 'p';
int i;
- seq_printf(m, "%c:%s/%s %s:0x%0*lx", c, tu->tp.call.class->system,
- trace_event_name(&tu->tp.call), tu->filename,
+ seq_printf(m, "%c:%s/%s %s:0x%0*lx", c, trace_probe_group_name(&tu->tp),
+ trace_probe_name(&tu->tp), tu->filename,
(int)(sizeof(void *) * 2), tu->offset);
if (tu->ref_ctr_offset)
tu = to_trace_uprobe(ev);
seq_printf(m, " %s %-44s %15lu\n", tu->filename,
- trace_event_name(&tu->tp.call), tu->nhit);
+ trace_probe_name(&tu->tp), tu->nhit);
return 0;
}
struct ring_buffer *buffer;
void *data;
int size, esize;
- struct trace_event_call *call = &tu->tp.call;
+ struct trace_event_call *call = trace_probe_event_call(&tu->tp);
WARN_ON(call != trace_file->event_call);
return 0;
rcu_read_lock();
- list_for_each_entry_rcu(link, &tu->tp.files, list)
+ trace_probe_for_each_link_rcu(link, &tu->tp)
__uprobe_trace_func(tu, 0, regs, ucb, dsize, link->file);
rcu_read_unlock();
struct event_file_link *link;
rcu_read_lock();
- list_for_each_entry_rcu(link, &tu->tp.files, list)
+ trace_probe_for_each_link_rcu(link, &tu->tp)
__uprobe_trace_func(tu, func, regs, ucb, dsize, link->file);
rcu_read_unlock();
}
if (is_ret_probe(tu)) {
trace_seq_printf(s, "%s: (0x%lx <- 0x%lx)",
- trace_event_name(&tu->tp.call),
+ trace_probe_name(&tu->tp),
entry->vaddr[1], entry->vaddr[0]);
data = DATAOF_TRACE_ENTRY(entry, true);
} else {
trace_seq_printf(s, "%s: (0x%lx)",
- trace_event_name(&tu->tp.call),
+ trace_probe_name(&tu->tp),
entry->vaddr[0]);
data = DATAOF_TRACE_ENTRY(entry, false);
}
filter_func_t filter)
{
bool enabled = trace_probe_is_enabled(&tu->tp);
- struct event_file_link *link = NULL;
int ret;
if (file) {
- if (tu->tp.flags & TP_FLAG_PROFILE)
+ if (trace_probe_test_flag(&tu->tp, TP_FLAG_PROFILE))
return -EINTR;
- link = kmalloc(sizeof(*link), GFP_KERNEL);
- if (!link)
- return -ENOMEM;
-
- link->file = file;
- list_add_tail_rcu(&link->list, &tu->tp.files);
-
- tu->tp.flags |= TP_FLAG_TRACE;
+ ret = trace_probe_add_file(&tu->tp, file);
+ if (ret < 0)
+ return ret;
} else {
- if (tu->tp.flags & TP_FLAG_TRACE)
+ if (trace_probe_test_flag(&tu->tp, TP_FLAG_TRACE))
return -EINTR;
- tu->tp.flags |= TP_FLAG_PROFILE;
+ trace_probe_set_flag(&tu->tp, TP_FLAG_PROFILE);
}
WARN_ON(!uprobe_filter_is_empty(&tu->filter));
uprobe_buffer_disable();
err_flags:
- if (file) {
- list_del(&link->list);
- kfree(link);
- tu->tp.flags &= ~TP_FLAG_TRACE;
- } else {
- tu->tp.flags &= ~TP_FLAG_PROFILE;
- }
+ if (file)
+ trace_probe_remove_file(&tu->tp, file);
+ else
+ trace_probe_clear_flag(&tu->tp, TP_FLAG_PROFILE);
+
return ret;
}
return;
if (file) {
- struct event_file_link *link;
-
- link = find_event_file_link(&tu->tp, file);
- if (!link)
+ if (trace_probe_remove_file(&tu->tp, file) < 0)
return;
- list_del_rcu(&link->list);
- /* synchronize with u{,ret}probe_trace_func */
- synchronize_rcu();
- kfree(link);
-
- if (!list_empty(&tu->tp.files))
+ if (trace_probe_is_enabled(&tu->tp))
return;
- }
+ } else
+ trace_probe_clear_flag(&tu->tp, TP_FLAG_PROFILE);
WARN_ON(!uprobe_filter_is_empty(&tu->filter));
uprobe_unregister(tu->inode, tu->offset, &tu->consumer);
tu->inode = NULL;
- tu->tp.flags &= file ? ~TP_FLAG_TRACE : ~TP_FLAG_PROFILE;
uprobe_buffer_disable();
}
unsigned long func, struct pt_regs *regs,
struct uprobe_cpu_buffer *ucb, int dsize)
{
- struct trace_event_call *call = &tu->tp.call;
+ struct trace_event_call *call = trace_probe_event_call(&tu->tp);
struct uprobe_trace_entry_head *entry;
struct hlist_head *head;
void *data;
ucb = uprobe_buffer_get();
store_trace_args(ucb->buf, &tu->tp, regs, esize, dsize);
- if (tu->tp.flags & TP_FLAG_TRACE)
+ if (trace_probe_test_flag(&tu->tp, TP_FLAG_TRACE))
ret |= uprobe_trace_func(tu, regs, ucb, dsize);
#ifdef CONFIG_PERF_EVENTS
- if (tu->tp.flags & TP_FLAG_PROFILE)
+ if (trace_probe_test_flag(&tu->tp, TP_FLAG_PROFILE))
ret |= uprobe_perf_func(tu, regs, ucb, dsize);
#endif
uprobe_buffer_put(ucb);
ucb = uprobe_buffer_get();
store_trace_args(ucb->buf, &tu->tp, regs, esize, dsize);
- if (tu->tp.flags & TP_FLAG_TRACE)
+ if (trace_probe_test_flag(&tu->tp, TP_FLAG_TRACE))
uretprobe_trace_func(tu, func, regs, ucb, dsize);
#ifdef CONFIG_PERF_EVENTS
- if (tu->tp.flags & TP_FLAG_PROFILE)
+ if (trace_probe_test_flag(&tu->tp, TP_FLAG_PROFILE))
uretprobe_perf_func(tu, func, regs, ucb, dsize);
#endif
uprobe_buffer_put(ucb);
.trace = print_uprobe_event
};
-static inline void init_trace_event_call(struct trace_uprobe *tu,
- struct trace_event_call *call)
+static inline void init_trace_event_call(struct trace_uprobe *tu)
{
- INIT_LIST_HEAD(&call->class->fields);
+ struct trace_event_call *call = trace_probe_event_call(&tu->tp);
+
call->event.funcs = &uprobe_funcs;
call->class->define_fields = uprobe_event_define_fields;
- call->flags = TRACE_EVENT_FL_UPROBE;
+ call->flags = TRACE_EVENT_FL_UPROBE | TRACE_EVENT_FL_CAP_ANY;
call->class->reg = trace_uprobe_register;
call->data = tu;
}
static int register_uprobe_event(struct trace_uprobe *tu)
{
- struct trace_event_call *call = &tu->tp.call;
- int ret = 0;
-
- init_trace_event_call(tu, call);
-
- if (traceprobe_set_print_fmt(&tu->tp, is_ret_probe(tu)) < 0)
- return -ENOMEM;
+ init_trace_event_call(tu);
- ret = register_trace_event(&call->event);
- if (!ret) {
- kfree(call->print_fmt);
- return -ENODEV;
- }
-
- ret = trace_add_event_call(call);
-
- if (ret) {
- pr_info("Failed to register uprobe event: %s\n",
- trace_event_name(call));
- kfree(call->print_fmt);
- unregister_trace_event(&call->event);
- }
-
- return ret;
+ return trace_probe_register_event_call(&tu->tp);
}
static int unregister_uprobe_event(struct trace_uprobe *tu)
{
- int ret;
-
- /* tu->event is unregistered in trace_remove_event_call() */
- ret = trace_remove_event_call(&tu->tp.call);
- if (ret)
- return ret;
- kfree(tu->tp.call.print_fmt);
- tu->tp.call.print_fmt = NULL;
- return 0;
+ return trace_probe_unregister_event_call(&tu->tp);
}
#ifdef CONFIG_PERF_EVENTS
tu->path = path;
tu->ref_ctr_offset = ref_ctr_offset;
tu->filename = kstrdup(name, GFP_KERNEL);
- init_trace_event_call(tu, &tu->tp.call);
+ init_trace_event_call(tu);
if (traceprobe_set_print_fmt(&tu->tp, is_ret_probe(tu)) < 0) {
ret = -ENOMEM;
goto error;
}
- return &tu->tp.call;
+ return trace_probe_event_call(&tu->tp);
error:
free_trace_uprobe(tu);
return ERR_PTR(ret);
tu = container_of(event_call, struct trace_uprobe, tp.call);
- kfree(tu->tp.call.print_fmt);
- tu->tp.call.print_fmt = NULL;
-
free_trace_uprobe(tu);
}
#endif /* CONFIG_PERF_EVENTS */
projects / linux.git / blobdiff