#include <libexplain/ac/errno.h>
#include <libexplain/ac/stdint.h>
#include <libexplain/ac/signal.h>
#include <libexplain/ac/sys/ptrace.h>
#include <libexplain/ac/sys/user.h>
#include <libexplain/buffer/ebusy.h>
#include <libexplain/buffer/efault.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/eio.h>
#include <libexplain/buffer/eperm.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/ptrace.h>
#include <libexplain/buffer/esrch.h>
#include <libexplain/buffer/gettext.h>
#include <libexplain/buffer/long.h>
#include <libexplain/buffer/pid_t_star.h>
#include <libexplain/buffer/pointer.h>
#include <libexplain/buffer/ptrace_options.h>
#include <libexplain/buffer/ptrace_request.h>
#include <libexplain/buffer/ptrace_vm_entry.h>
#include <libexplain/buffer/signal.h>
#include <libexplain/explanation.h>
#include <libexplain/is_efault.h>
#include <libexplain/process_exists.h>

Functions
static void	explain_buffer_errno_ptrace_system_call (explain_string_buffer_t sb, int errnum, int request, pid_t pid, void addr, void *data)
static int	request_is_known (int request)
static int	calculate_addr_size (int request)
static int	calculate_data_size (int request)
void	explain_buffer_errno_ptrace_explanation (explain_string_buffer_t sb, int errnum, const char syscall_name, int request, pid_t pid, void addr, void data)
void	explain_buffer_errno_ptrace (explain_string_buffer_t sb, int errnum, int request, pid_t pid, void addr, void *data)

Function Documentation

static int calculate_addr_size ( int request ) [static]

Definition at line 253 of file ptrace.c.

static int calculate_data_size ( int request ) [static]

Definition at line 279 of file ptrace.c.

void explain_buffer_errno_ptrace	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	request,
		pid_t	pid,
		void *	addr,
		void *	data
	)

The explain_buffer_errno_ptrace function is used to obtain an explanation of an error returned by the ptrace(2) system call. The least the message will contain is the value of strerror(errnum), but usually it will do much better, and indicate the underlying cause in more detail.

Parameters:

sb	The string buffer to print the message into. If a suitable buffer is specified, this function is thread safe.
errnum	The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno.
request	The original request, exactly as passed to the ptrace(2) system call.
pid	The original pid, exactly as passed to the ptrace(2) system call.
addr	The original addr, exactly as passed to the ptrace(2) system call.
data	The original data, exactly as passed to the ptrace(2) system call.

Definition at line 562 of file ptrace.c.

void explain_buffer_errno_ptrace_explanation	(	explain_string_buffer_t *	sb,
		int	errnum,
		const char *	syscall_name,
		int	request,
		pid_t	pid,
		void *	addr,
		void *	data
	)

The explain_buffer_errno_ptrace_explanation function is used to obtain the explanation (the part after "because") of an error returned by the ptrace(2) system call (and similar).

Parameters:

sb	The string buffer to print the message into. If a suitable buffer is specified, this function is thread safe.
errnum	The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno.
syscall_name	The name of the offending system call.
request	The original request, exactly as passed to the ptrace(2) system call.
pid	The original pid, exactly as passed to the ptrace(2) system call.
addr	The original addr, exactly as passed to the ptrace(2) system call.
data	The original data, exactly as passed to the ptrace(2) system call.

Definition at line 366 of file ptrace.c.

static void explain_buffer_errno_ptrace_system_call	(	explain_string_buffer_t *	sb,
		int	errnum,
		int	request,
		pid_t	pid,
		void *	addr,
		void *	data
	)		`[static]`

Definition at line 47 of file ptrace.c.

static int request_is_known ( int request ) [static]

Definition at line 119 of file ptrace.c.

Functions

Function Documentation