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kernel: opt allowlist persist and log (#119)

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* kernel: persist on need

* kernel: opt log for ksu_allow_uid
This commit is contained in:
Ylarod
2023-01-26 08:55:27 +08:00
committed by GitHub
parent 06aaae1335
commit 22b66b6672
3 changed files with 23 additions and 10 deletions
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24
kernel/allowlist.c
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@@ -2,6 +2,7 @@
#include "linux/fs.h"
#include "linux/kernel.h"
#include "linux/list.h"
#include "linux/printk.h"
#include "linux/slab.h"
#include "selinux/selinux.h"
@@ -26,7 +27,17 @@ static struct work_struct ksu_load_work;
bool persistent_allow_list(void);
bool ksu_allow_uid(uid_t uid, bool allow)
void ksu_show_allow_list(void){
struct perm_data *p = NULL;
struct list_head *pos = NULL;
pr_info("ksu_show_allow_list");
list_for_each (pos, &allow_list) {
p = list_entry(pos, struct perm_data, list);
pr_info("uid :%d, allow: %d\n", p->uid, p->allow);
}
}
bool ksu_allow_uid(uid_t uid, bool allow, bool persist)
{
// find the node first!
struct perm_data *p = NULL;
@@ -34,7 +45,6 @@ bool ksu_allow_uid(uid_t uid, bool allow)
bool result = false;
list_for_each (pos, &allow_list) {
p = list_entry(pos, struct perm_data, list);
pr_info("ksu_allow_uid :%d, allow: %d\n", p->uid, p->allow);
if (uid == p->uid) {
p->allow = allow;
result = true;
@@ -55,8 +65,8 @@ bool ksu_allow_uid(uid_t uid, bool allow)
result = true;
exit:
persistent_allow_list();
if (persist)
persistent_allow_list();
return result;
}
@@ -169,7 +179,7 @@ void do_load_allow_list(struct work_struct *work)
#ifdef CONFIG_KSU_DEBUG
int errno = PTR_ERR(fp);
if (errno == -ENOENT) {
ksu_allow_uid(2000, true); // allow adb shell by default
ksu_allow_uid(2000, true, true); // allow adb shell by default
} else {
pr_err("load_allow_list open file failed: %d\n",
PTR_ERR(fp));
@@ -207,11 +217,11 @@ void do_load_allow_list(struct work_struct *work)
pr_info("load_allow_uid: %d, allow: %d\n", uid, allow);
ksu_allow_uid(uid, allow);
ksu_allow_uid(uid, allow, false);
}
exit:
ksu_show_allow_list();
filp_close(fp, 0);
}