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Name	Size	Permission
common	[ DIR ]	drwxr-xr-x
syscall_hooks	[ DIR ]	drwxr-xr-x
transport	[ DIR ]	drwxr-xr-x
Kbuild	2.91 KB	-rw-r--r--
Makefile	2.2 KB	-rw-r--r--
compat.c	4.23 KB	-rw-r--r--
compat.h	6.22 KB	-rw-r--r--
debug.h	2.58 KB	-rw-r--r--
dkms.conf	146 B	-rw-r--r--
memory.h	529 B	-rw-r--r--
module.c	1.85 KB	-rw-r--r--
stringify.h	261 B	-rw-r--r--
task_info_map.c	7.75 KB	-rw-r--r--
task_info_map.h	1.8 KB	-rw-r--r--
tracepoints.c	2.96 KB	-rw-r--r--
tracepoints.h	299 B	-rw-r--r--

Code Editor : task_info_map.h

/**
@file
@brief    Process (aka task) info storage
@details  Copyright (c) 2017-2021 Acronis International GmbH
@author   Ivan Matveev (ivan.matveev@acronis.com)
@since    $Id: $
*/

#pragma once

#include "transport_protocol.h" // task_status_t

#include <linux/path.h>
#include <linux/rbtree.h>
#include <linux/spinlock.h>
#include <linux/types.h>  // bool

typedef struct {
	struct rb_node rb_node;
	pid_t pid;

atomic_t ref_cnt;
	spinlock_t spinlock;

task_status_t status;
	struct path exe_path;

struct list_head exited_list_item;
} task_info_t;

const char *task_status_to_string(task_status_t status);
task_info_t *task_info_ref(task_info_t *info);
void task_info_unref(task_info_t *info);

int task_info_map_init(void);
void task_info_map_down(void);
void task_info_map_clear(void);

// if not found return NULL
task_info_t *task_info_lookup(pid_t pid);
task_info_t *task_info_get(pid_t pid);

// errors:
// 1. ENOMEM - alloc failed
// 2. EINVAL - task_info with sutch pid already exist
// on success return 0
int task_info_map_add(pid_t pid, task_status_t status, struct path exe_path);
// Same as task_info_map_add(), but before call should call 'task_info_map_lock()'
int task_info_map_add_impl(pid_t pid, task_status_t status, struct path exe_path);

int task_info_map_del(pid_t pid);

// =========================  useful wrappers  ========================= //

// if pid not found return TS_UNKNOWN
task_status_t task_info_status_get(pid_t pid);

// create task_info struct if needed
// errors:
// 1. ENOMEM - alloc failed
// 2. ENOENT - no such pid or task_struct without executable file
// 3. EINVAL - task_info with sutch pid already exist - synchronisation broken
int task_info_status_set(pid_t pid, task_status_t status);

void task_info_map_delete_exited(void);
void task_info_map_on_exit_event(pid_t tgid, pid_t pid);

${this.title}

Code Editor : task_info_map.h