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Tracing tricks with ptrace - Pramode
https://www.pramode.net/articles/lfy/ptrace/pramode.html#:~:text=%20Tracing%20tricks%20with%20ptrace%20%201%20Getting,which%20stops%20a%20child%20process%2C%20%60child3%27%2C...%20More%20
Tracing a program from its entry point with ptrace (linux, c)
https://stackoverflow.com/questions/64596759/tracing-a-program-from-its-entry-point-with-ptrace-linux-c
Set a breakpoint on actual_entrypoint_addr and call ptrace(PTRACE_CONT). Once the breakpoint hits ( waitpid() returns), proceed as you have so far (count the ptrace(PTRACE_SINGLESTEP) s). An example where we would need to handle the relocation:
Process Tracing Using Ptrace - CodeAntenna
https://codeantenna.com/a/oKCIzbFc0C
ptrace () is a system call that enables one process to control the execution of another. It also enables a process to change the core image of another process. The traced process behaves normally until a signal is caught. When that occurs the process enters stopped state and informs the tracing process by a wait () call.
Tracing tricks with ptrace - Pramode
https://www.pramode.net/articles/lfy/ptrace/pramode.html
Tracing tricks with ptrace Getting started. The `ptrace' system call helps us temporarily stop a running process and read as well as modify the... Letting a parent trace its child. Let's make things a bit more interesting. Listing 2 shows a program which calls the... Parent peeks into child's ...
c - system call tracing using ptrace - Stack Overflow
https://stackoverflow.com/questions/9769350/system-call-tracing-using-ptrace
I wrote a program to list all the system calls executed by a command (say /bin/ls). Now what I am trying to do is find all the system call arguments, environment variables, command line arguments that may be passed to it. Example: If I open a file. The system call sys_access will open the file right ?
Process Tracing Using Ptrace LG #81
https://tldp.org/LDP/LG/issue81/sandeep.html
PTRACE — Processor trace - IBM
https://www.ibm.com/docs/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieaa300/ptrce.htm
PTRACE routine are treated as 31-bit addresses. PTRACE users must include the IHAPSA and IHATRVT mapping macros and register 13 must point to a 72-byte save area that can be used by the PTRACE service. PTRACE accepts the TRACEMODE=TRACG option to request the use of TRACG to record trace data. This option alters the interpretation
ptrace(2): process trace - Linux man page
https://linux.die.net/man/2/ptrace
Description Death under ptrace. When a (possibly multithreaded) process receives a killing signal (one whose disposition is set to... Stopped states. A tracee can be in two states: running or stopped. There are many kinds of states when the tracee is... Signal-delivery-stop. When a …
Process Tracing Using Ptrace, part 2 LG #83 - Linux Gazette
https://linuxgazette.net/issue83/sandeep.html
PTRACE_POKETEXT : This copies 32 bits from the address pointed by data in the addr address of the traced process. Now we are going to inject a small piece of our code to image of the process being traced and force the process to execute our code by changing its instruction pointer. What we do is very simple.
Playing with ptrace, Part I | Linux Journal
https://www.linuxjournal.com/article/6100
If you are thinking of using complex kernel programming to accomplish tasks, think again. Linux provides an elegant mechanism to achieve all of these things: the ptrace (Process Trace) system call. ptrace provides a mechanism by which a parent process may observe and control the execution of another process. It can examine and change its core image and …
Process Tracing Using Ptrace - Part III LG #85
https://tldp.org/LDP/LG/issue85/sandeep.html
Ptrace.c Almost the whole code is self explaining. Compile it by typing #cc Ptrace.c -o symtrace Now we want to test the program. Run some process in some other console, come back and type. (Here my test program is emacs and the symbol I give is strcpy). You may trace any program that is traceable instead of emacs and any symbol you want to inspect.
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