From cf5618ff2e2a183c5bdf6444787dccdcbf26ce76 Mon Sep 17 00:00:00 2001
From: We-unite <3205135446@qq.com>
Date: Mon, 22 Jul 2024 11:41:59 +0800
Subject: Use mongodb, insert process info into it

I failed to print the process tree out. While I'm printing the tree,
the tree itself gets changed, maybe deleted. What's more, the output
show that there are 4 lines with the same ppid and pid, how an absurd
result! It may be caused by multi-thread. So, use database instead.

Mongodb uses bson(binary json) to store data but not relational
database like mysql, which means it's more easy to use.(?)

Beside inserting, I've also solved a question that "fork" is called
once but returns twice. For instance, pid 1 forked pid 2, in the
audit log it's not an event "syscall=clone,ppid=1,pid=2", but actually
two events "syscall=clone,exit=0,ppid=0,pid=1" and "syscall=clone,exit=
2,ppid=0,pid=1", which is just what we see in sys_fork in kernel source.
To deal with this, when syscall is clone and exit is 0 we just drop it.

Left question: To find out the exit code when a process exit/exit_group,
and finish the code to record it in the database.
---
 src/global.go | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'src/global.go')

diff --git a/src/global.go b/src/global.go
index 4e08866..0439df6 100644
--- a/src/global.go
+++ b/src/global.go
@@ -1,6 +1,27 @@
 package main
 
-import "sync"
+import (
+	"sync"
+	"time"
+)
+
+type Event struct {
+	timestamp time.Time
+	pid, ppid int
+	syscall   int
+	argc      int
+	argv      []string
+	cwd       string
+}
+
+type process struct {
+	timestamp time.Time
+	pid, ppid int
+	argv      []string
+	cwd       string
+	rootfs    string
+	children  []int
+}
 
 var pids sync.Map            // 古希腊掌管进程的神，int->*process
 var wg sync.WaitGroup        // 掌管协程
-- 
cgit v1.2.3-70-g09d2