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| 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 | */ |
| 26 | TRACE_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> |
| 58 |
Warning: This file is not a C or C++ file. It does not have highlighting.