PTRACE_GET_SYSCALL_INFO request was introduced by Linux kernel commit 201766a20e30f982ccfe36bebfad9602c3ff574a aka v5.3-rc1~65^2~23. Signed-off-by: Dmitry V. Levin <ldv@xxxxxxxxxxxx> --- man2/ptrace.2 | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/man2/ptrace.2 b/man2/ptrace.2 index 8b8daf238..3b774f87b 100644 --- a/man2/ptrace.2 +++ b/man2/ptrace.2 @@ -1005,6 +1005,27 @@ of the .IR "struct user_desc" is ignored; in other words, this ptrace operation can't be used to allocate a free TLS entry.) +.TP +.BR PTRACE_GET_SYSCALL_INFO " (since Linux 5.3)" +.\" commit 201766a20e30f982ccfe36bebfad9602c3ff574a +Retrieve information about the syscall that caused the stop. +The information is placed into the buffer pointed by +.I data +argument, which should be a pointer to a buffer of type +.IR "struct ptrace_syscall_info" . +The +.I addr +argument contains the size of the buffer pointed to +by +.I data +argument (i.e., +.IR "sizeof(struct ptrace_syscall_info)" ). +The return value contains the number of bytes available +to be written by the kernel. +If the size of data to be written by the kernel exceeds the size +specified by +.I addr +argument, the output is truncated. .\" .SS Death under ptrace When a (possibly multithreaded) process receives a killing signal -- ldv
