TRACEHOOK_REPORT_SYS - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : Kernel Internals

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NAMEtracehook_report_syscall_exit − task has just finished a system call

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SYNOPSISvoid tracehook_report_syscall_exit(struct pt_regs * regs, int step);

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ARGUMENTSregs user register state of current task step nonzero if simulating single−step or block−step

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DESCRIPTIONThis will be called if TIF_SYSCALL_TRACE has been set, when the current task has just finished an attempted system call​. Full user register state is available here​. It is safe to block here, preventing signals from being processed​. If step is nonzero, this report is also in lieu of the normal trap that would follow the system call instruction because user_enable_block_step or user_enable_single_step was used​. In this case, TIF_SYSCALL_TRACE might not be set​. Called without locks, just before checking for pending signals​. 0

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