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/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kapi
#if !defined(_TRACE_KAPI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_KAPI_H
#include <linux/tracepoint.h>
/* Max length of the rendered "name=value, ..." parameter list. */
#define KAPI_TP_PARAMS_LEN 256
/*
* Emitted from the CONFIG_KAPI_RUNTIME_CHECKS syscall validation path for
* syscalls that have a KAPI specification: kapi_syscall_enter fires before
* parameter validation, kapi_syscall_exit after the handler returns.
* @name is the spec name, e.g. "sys_open".
*
* kapi_syscall_enter carries both the raw argument values (args[]) and, when
* the spec provides parameter metadata, a rendered "name=value" list (params,
* built by the caller): pointer-like values in hex, integers and fds in decimal.
*/
TRACE_EVENT(kapi_syscall_enter,
TP_PROTO(const char *name, int nargs, const s64 *args, const char *params),
TP_ARGS(name, nargs, args, params),
TP_STRUCT__entry(
__string( name, name )
__field( int, nargs )
__array( u64, args, 6 )
__string( params, params )
),
TP_fast_assign(
__assign_str(name);
__entry->nargs = nargs;
memset(__entry->args, 0, sizeof(__entry->args));
if (args && nargs > 0)
memcpy(__entry->args, args,
min_t(int, nargs, 6) * sizeof(__entry->args[0]));
__assign_str(params);
),
TP_printk("%s(%s)", __get_str(name), __get_str(params))
);
TRACE_EVENT(kapi_syscall_exit,
TP_PROTO(const char *name, long ret, bool spec_match),
TP_ARGS(name, ret, spec_match),
TP_STRUCT__entry(
__string( name, name )
__field( long, ret )
__field( bool, spec_match )
),
TP_fast_assign(
__assign_str(name);
__entry->ret = ret;
__entry->spec_match = spec_match;
),
TP_printk("%s = %ld spec_match=%d",
__get_str(name), __entry->ret, __entry->spec_match)
);
#endif /* _TRACE_KAPI_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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