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kernel: support CMD_IS_UID_GRANTED_ROOT and CMD_IS_UID_SHOULD_UMOUNT

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weishu
2023-06-03 22:43:50 +08:00
parent 5003824fa8
commit b31fc47197
4 changed files with 57 additions and 4 deletions
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27
kernel/core_hook.c
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@@ -322,6 +322,31 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
return 0;
}
if (arg2 == CMD_IS_UID_GRANTED_ROOT ||
arg2 == CMD_IS_UID_SHOULD_UMOUNT) {
if (is_manager() || 0 == current_uid().val) {
uid_t target_uid = (uid_t)arg3;
bool allow = false;
if (arg2 == CMD_IS_UID_GRANTED_ROOT) {
allow = ksu_is_allow_uid(target_uid);
} else if (arg2 == CMD_IS_UID_SHOULD_UMOUNT) {
allow = ksu_is_uid_should_umount(target_uid);
} else {
pr_err("unknown cmd: %d\n", arg2);
}
if (!copy_to_user(arg4, &allow, sizeof(allow))) {
if (copy_to_user(result, &reply_ok,
sizeof(reply_ok))) {
pr_err("prctl reply error, cmd: %d\n",
arg2);
}
} else {
pr_err("prctl copy err, cmd: %d\n", arg2);
}
}
return 0;
}
// all other cmds are for 'root manager'
if (!is_manager()) {
last_failed_uid = current_uid().val;
@@ -336,7 +361,7 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
return 0;
}
bool success = ksu_get_app_profile(&profile);
bool success = ksu_get_app_profile(&profile, false);
if (success) {
if (copy_to_user(arg3, &profile, sizeof(profile))) {
pr_err("copy profile failed\n");