SIMPLE SOLUTIONS

EXPLAIN_PTRACE_OR_DIE - reference manual online

Process trace and report errors.

Chapter
explain_ptrace_or_die(3)             Library Functions Manual            explain_ptrace_or_die(3)

NAME explain_ptrace_or_die - process trace and report errors
SYNOPSIS #include <libexplain/ptrace.h> long explain_ptrace_or_die(int request, pid_t pid, void *addr, void *data); long explain_ptrace_on_error(int request, pid_t pid, void *addr, void *data);
DESCRIPTION The explain_ptrace_or_die function is used to call the ptrace(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_ptrace(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_ptrace_on_error function is used to call the ptrace(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_ptrace(3) function, but still returns to the caller. request The request, exactly as to be passed to the ptrace(2) system call. pid The pid, exactly as to be passed to the ptrace(2) system call. addr The addr, exactly as to be passed to the ptrace(2) system call. data The data, exactly as to be passed to the ptrace(2) system call.
RETURN VALUE The explain_ptrace_or_die function only returns on success, see ptrace(2) for more infor‐ mation. On failure, prints an explanation and exits, it does not return. The explain_ptrace_on_error function always returns the value return by the wrapped ptrace(2) system call.
EXAMPLE The explain_ptrace_or_die function is intended to be used in a fashion similar to the fol‐ lowing example: long result = explain_ptrace_or_die(request, pid, addr, data);
SEE ALSO ptrace(2) process trace explain_ptrace(3) explain ptrace(2) errors exit(2) terminate the calling process
explain_ptrace_or_die(3)
This manual Reference Other manuals
explain_ptrace_or_die(3) referred by explain(3) | explain_ptrace(3)
refer to _exit(2) | explain_ptrace(3) | ptrace(2)