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kernel - How do I trace a system call in Linux? - Stack …
https://stackoverflow.com/questions/29840213/how-do-i-trace-a-system-call-in-linux
strace -f -e trace=process bash -c 'ls; :'. -f Trace child processes as they are created by currently traced processes as a result of the fork (2) system call. -ff If the -o filename option is in effect, each processes trace is written to filename.pid where pid is …
Lab: System calls
https://pdos.csail.mit.edu/6.828/2021/labs/syscall.html
The functions to retrieve system call arguments from user space are in kernel/syscall.c, and you can see examples of their use in kernel/sysproc.c. Modify fork() (see kernel/proc.c) to copy the trace mask from the parent to the child process. Modify the syscall() function in kernel/syscall.c to print the trace output. You will need to add an array of syscall names to index into.
Windows User Mode Process Syscall Tracing With ETW
https://stackoverflow.com/questions/44338796/windows-user-mode-process-syscall-tracing-with-etw
logman start "NT Kernel Logger" -p "Windows Kernel Trace" (syscall) -o sys.etl -ets and then stop it logman stop "NT Kernel Logger" -ets when you parse the .etl file using tracerpt tracerpt sys.etl You can see syscall addresses in the dumpfile.xml. Using windbg and starting it from the command line with this command: windbg.exe -kl -c x*!nt*
[v2] ARM: support syscall tracing - Patchwork
https://patchwork.kernel.org/patch/1325991/
As specified by ftrace-design.txt, TIF_SYSCALL_TRACEPOINT was added, as well as NR_syscalls in asm/unistd.h. Additionally, __sys_trace was modified to call trace_sys_enter and trace_sys_exit when appropriate. Tests #2 - #4 of "perf test" now complete successfully.
Linux-Kernel Archive: [GIT PULL][PATCH] tracing/syscalls: use a ...
https://lkml.iu.edu/hypermail/linux/kernel/0904.1/00774.html
Please pull the latest tip/tracing/core tree, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git tip/tracing/core Frederic Weisbecker (1): tracing/syscalls: use a dedicated file header----arch/x86/kernel/ftrace.c | 2 ++ arch/x86/kernel/ptrace.c | 2 ++
Function Tracer Design — The Linux Kernel documentation
https://www.kernel.org/doc/html/latest/trace/ftrace-design.html
Support the TIF_SYSCALL_TRACEPOINT thread flags. Put the trace_sys_enter() and trace_sys_exit() tracepoints calls from ptrace in the ptrace syscalls tracing path. If the system call table on this arch is more complicated than a simple array of addresses of the system calls, implement an arch_syscall_addr to return the address of a given system call.
Linux Tracing Technologies — The Linux Kernel …
https://www.kernel.org/doc/html/latest/trace/index.html
Single thread tracing. function graph tracer. dynamic ftrace. Selecting function filters via index. Dynamic ftrace with the function graph tracer. ftrace_enabled. …
[PATCH 00/12] tracing: add compat syscall support v2
LKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 00/12] tracing: add compat syscall support v2 @ 2010-02-26 21:36 Jason Baron 2010-02-26 21:37 ` [PATCH 01/12] x86: add NR_syscalls_compat, make ia32 syscall table visible Jason Baron ` (13 more replies) 0 siblings, 14 replies; 20+ messages in thread From: Jason Baron @ 2010-02-26 21:36 UTC …
[PATCH 1/2] tracing/syscalls: allow multiple syscall numbers per syscall
That uses arch_syscall_addr method, which has a default implementation in kernel/trace/trace_syscalls.c: unsigned long __init __weak arch_syscall_addr (int nr) { return (unsigned long)sys_call_table [nr]; } that works for x86 and only uses 'native' syscalls, ie. for x86_64 will not map any of the ia32_sys_call_table entries.
Re: [PATCH 1/2] tracing/syscalls: allow multiple syscall numbers …
Then call syscall_get_arch() as well as > syscall_get_nr() and use both to lookup the metadata. AFAIK this > should work on all architectures, although you might need some arch > helpers to enumerate all the arches and their respective syscall > tables (and max syscall nrs). OK, if the regs can get us to the arch, then this might work.
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