capability.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#undef TRACE_SYSTEM
 3#define TRACE_SYSTEM capability
 4
 5#if !defined(_TRACE_CAPABILITY_H) || defined(TRACE_HEADER_MULTI_READ)
 6#define _TRACE_CAPABILITY_H
 7
 8#include <linux/cred.h>
 9#include <linux/tracepoint.h>
10#include <linux/user_namespace.h>
11
12/**
13 * cap_capable - called after it's determined if a task has a particular
14 * effective capability
15 *
16 * @cred: The credentials used
17 * @target_ns: The user namespace of the resource being accessed
18 * @capable_ns: The user namespace in which the credential provides the
19 *              capability to access the targeted resource.
20 *              This will be NULL if ret is not 0.
21 * @cap: The capability to check for
22 * @ret: The return value of the check: 0 if it does, -ve if it does not
23 *
24 * Allows to trace calls to cap_capable in commoncap.c
25 */
26TRACE_EVENT(cap_capable,
27
28	TP_PROTO(const struct cred *cred, struct user_namespace *target_ns,
29		const struct user_namespace *capable_ns, int cap, int ret),
30
31	TP_ARGS(cred, target_ns, capable_ns, cap, ret),
32
33	TP_STRUCT__entry(
34		__field(const struct cred *, cred)
35		__field(struct user_namespace *, target_ns)
36		__field(const struct user_namespace *, capable_ns)
37		__field(int, cap)
38		__field(int, ret)
39	),
40
41	TP_fast_assign(
42		__entry->cred       = cred;
43		__entry->target_ns    = target_ns;
44		__entry->capable_ns = ret == 0 ? capable_ns : NULL;
45		__entry->cap        = cap;
46		__entry->ret        = ret;
47	),
48
49	TP_printk("cred %p, target_ns %p, capable_ns %p, cap %d, ret %d",
50		__entry->cred, __entry->target_ns, __entry->capable_ns, __entry->cap,
51		__entry->ret)
52);
53
54#endif /* _TRACE_CAPABILITY_H */
55
56/* This part must be outside protection */
57#include <trace/define_trace.h>