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kernel: prune allowlist with package name and uid

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weishu
2023-10-12 15:44:43 +08:00
parent 79951f06ed
commit b1830049f1
3 changed files with 15 additions and 10 deletions
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16
kernel/uid_observer.c
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@@ -20,16 +20,18 @@ static struct work_struct ksu_update_uid_work;
struct uid_data {
struct list_head list;
u32 uid;
char package[KSU_MAX_PACKAGE_NAME];
};
static bool is_uid_exist(uid_t uid, void *data)
static bool is_uid_exist(uid_t uid, char *package, void *data)
{
struct list_head *list = (struct list_head *)data;
struct uid_data *np;
bool exist = false;
list_for_each_entry (np, list, list) {
if (np->uid == uid % 100000) {
if (np->uid == uid % 100000 &&
strcmp(np->package, package) == 0) {
exist = true;
break;
}
@@ -39,7 +41,8 @@ static bool is_uid_exist(uid_t uid, void *data)
static void do_update_uid(struct work_struct *work)
{
struct file *fp = ksu_filp_open_compat(SYSTEM_PACKAGES_LIST_PATH, O_RDONLY, 0);
struct file *fp =
ksu_filp_open_compat(SYSTEM_PACKAGES_LIST_PATH, O_RDONLY, 0);
if (IS_ERR(fp)) {
pr_err("do_update_uid, open " SYSTEM_PACKAGES_LIST_PATH
" failed: %d\n",
@@ -73,10 +76,10 @@ static void do_update_uid(struct work_struct *work)
char *tmp = buf;
const char *delim = " ";
strsep(&tmp, delim); // skip package
char *package = strsep(&tmp, delim);
char *uid = strsep(&tmp, delim);
if (!uid) {
pr_err("update_uid: uid is NULL!\n");
if (!uid || !package) {
pr_err("update_uid: package or uid is NULL!\n");
continue;
}
@@ -86,6 +89,7 @@ static void do_update_uid(struct work_struct *work)
continue;
}
data->uid = res;
strcpy(data->package, package);
list_add_tail(&data->list, &uid_list);
// reset line start
line_start = pos;