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kernel: allow root processes to get allow/deny list (#256)

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Nullptr
2023-02-19 16:09:21 +08:00
committed by GitHub
parent 3f1ee2f784
commit a161c318a1
1 changed files with 23 additions and 19 deletions
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42
kernel/core_hook.c
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@@ -253,25 +253,8 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
return 0; return 0;
} }
// all other cmds are for 'root manager' if (arg2 == CMD_GET_ALLOW_LIST || arg2 == CMD_GET_DENY_LIST) {
if (!is_manager()) { if (is_manager() || 0 == current_uid().val) {
pr_info("Only manager can do cmd: %d\n", arg2);
return 0;
}
// we are already manager
if (arg2 == CMD_ALLOW_SU || arg2 == CMD_DENY_SU) {
bool allow = arg2 == CMD_ALLOW_SU;
bool success = false;
uid_t uid = (uid_t)arg3;
success = ksu_allow_uid(uid, allow, true);
if (success) {
if (copy_to_user(result, &reply_ok, sizeof(reply_ok))) {
pr_err("prctl reply error, cmd: %d\n", arg2);
}
}
ksu_show_allow_list();
} else if (arg2 == CMD_GET_ALLOW_LIST || arg2 == CMD_GET_DENY_LIST) {
u32 array[128]; u32 array[128];
u32 array_length; u32 array_length;
bool success = ksu_get_allow_list(array, &array_length, bool success = ksu_get_allow_list(array, &array_length,
@@ -291,6 +274,27 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
} }
} }
} }
}
// all other cmds are for 'root manager'
if (!is_manager()) {
pr_info("Only manager can do cmd: %d\n", arg2);
return 0;
}
// we are already manager
if (arg2 == CMD_ALLOW_SU || arg2 == CMD_DENY_SU) {
bool allow = arg2 == CMD_ALLOW_SU;
bool success = false;
uid_t uid = (uid_t)arg3;
success = ksu_allow_uid(uid, allow, true);
if (success) {
if (copy_to_user(result, &reply_ok, sizeof(reply_ok))) {
pr_err("prctl reply error, cmd: %d\n", arg2);
}
}
ksu_show_allow_list();
}
return 0; return 0;
} }