| 1 | #ifndef _TRACE_SYSCALL_H
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| 2 | #define _TRACE_SYSCALL_H
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| 3 |
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| 4 | #include <linux/tracepoint.h>
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| 5 | #include <linux/unistd.h>
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| 6 | #include <linux/trace_events.h>
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| 7 | #include <linux/thread_info.h>
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| 8 |
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| 9 | #include <asm/ptrace.h>
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| 10 |
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| 11 |
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| 12 | |
| 13 | * A syscall entry in the ftrace syscalls array.
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| 14 | *
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| 15 | * @name: name of the syscall
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| 16 | * @syscall_nr: number of the syscall
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| 17 | * @nb_args: number of parameters it takes
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| 18 | * @types: list of types as strings
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| 19 | * @args: list of args as strings (args[i] matches types[i])
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| 20 | * @enter_fields: list of fields for syscall_enter trace event
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| 21 | * @enter_event: associated syscall_enter trace event
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| 22 | * @exit_event: associated syscall_exit trace event
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| 23 |
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| 24 | struct syscall_metadata {
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| 25 | const char *name;
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| 26 | int syscall_nr;
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| 27 | int nb_args;
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| 28 | const char **types;
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| 29 | const char **args;
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| 30 | struct list_head enter_fields;
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| 31 |
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| 32 | struct trace_event_call *enter_event;
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| 33 | struct trace_event_call *exit_event;
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| 34 | };
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| 35 |
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| 36 | #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
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| 37 | static inline void syscall_tracepoint_update(struct task_struct *p)
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| 38 | {
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| 39 | if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
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| 40 | set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
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| 41 | else
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| 42 | clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
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| 43 | }
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| 44 | #else
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| 45 | static inline void syscall_tracepoint_update(struct task_struct *p)
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| 46 | {
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| 47 | }
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| 48 | #endif
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| 49 |
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| 50 | #endif
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