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kernel: Add sulog records for supercalls

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This commit is contained in:
ShirkNeko
2025-11-02 02:20:06 +08:00
parent 97fb509b50
commit 3b4647cc81
2 changed files with 66 additions and 32 deletions
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97
kernel/supercalls.c
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@@ -77,6 +77,10 @@ static int do_grant_root(void __user *arg)
// Check if current UID is allowed // Check if current UID is allowed
bool is_allowed = is_manager() || ksu_is_allow_uid(current_uid().val); bool is_allowed = is_manager() || ksu_is_allow_uid(current_uid().val);
#if __SULOG_GATE
ksu_sulog_report_permission_check(current_uid().val, current->comm, is_allowed);
#endif
if (!is_allowed) { if (!is_allowed) {
return -EPERM; return -EPERM;
} }
@@ -513,27 +517,27 @@ static int do_enable_uid_scanner(void __user *arg)
// IOCTL handlers mapping table // IOCTL handlers mapping table
static const struct ksu_ioctl_cmd_map ksu_ioctl_handlers[] = { static const struct ksu_ioctl_cmd_map ksu_ioctl_handlers[] = {
{ .cmd = KSU_IOCTL_GRANT_ROOT, .handler = do_grant_root, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_GRANT_ROOT, .handler = do_grant_root, .perm_check = perm_check_basic, .name = "do_grant_root"},
{ .cmd = KSU_IOCTL_GET_INFO, .handler = do_get_info, .perm_check = perm_check_all}, { .cmd = KSU_IOCTL_GET_INFO, .handler = do_get_info, .perm_check = perm_check_all, .name = "do_get_info"},
{ .cmd = KSU_IOCTL_REPORT_EVENT, .handler = do_report_event, .perm_check = perm_check_root}, { .cmd = KSU_IOCTL_REPORT_EVENT, .handler = do_report_event, .perm_check = perm_check_root, .name = "do_report_event"},
{ .cmd = KSU_IOCTL_SET_SEPOLICY, .handler = do_set_sepolicy, .perm_check = perm_check_root}, { .cmd = KSU_IOCTL_SET_SEPOLICY, .handler = do_set_sepolicy, .perm_check = perm_check_root, .name = "do_set_sepolicy"},
{ .cmd = KSU_IOCTL_CHECK_SAFEMODE, .handler = do_check_safemode, .perm_check = perm_check_all}, { .cmd = KSU_IOCTL_CHECK_SAFEMODE, .handler = do_check_safemode, .perm_check = perm_check_all, .name = "do_check_safemode"},
{ .cmd = KSU_IOCTL_GET_ALLOW_LIST, .handler = do_get_allow_list, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_GET_ALLOW_LIST, .handler = do_get_allow_list, .perm_check = perm_check_basic, .name = "do_get_allow_list"},
{ .cmd = KSU_IOCTL_GET_DENY_LIST, .handler = do_get_deny_list, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_GET_DENY_LIST, .handler = do_get_deny_list, .perm_check = perm_check_basic, .name = "do_get_deny_list"},
{ .cmd = KSU_IOCTL_UID_GRANTED_ROOT, .handler = do_uid_granted_root, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_UID_GRANTED_ROOT, .handler = do_uid_granted_root, .perm_check = perm_check_basic, .name = "do_uid_granted_root"},
{ .cmd = KSU_IOCTL_UID_SHOULD_UMOUNT, .handler = do_uid_should_umount, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_UID_SHOULD_UMOUNT, .handler = do_uid_should_umount, .perm_check = perm_check_basic, .name = "do_uid_should_umount"},
{ .cmd = KSU_IOCTL_GET_MANAGER_UID, .handler = do_get_manager_uid, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_GET_MANAGER_UID, .handler = do_get_manager_uid, .perm_check = perm_check_basic, .name = "do_get_manager_uid"},
{ .cmd = KSU_IOCTL_GET_APP_PROFILE, .handler = do_get_app_profile, .perm_check = perm_check_manager}, { .cmd = KSU_IOCTL_GET_APP_PROFILE, .handler = do_get_app_profile, .perm_check = perm_check_manager, .name = "do_get_app_profile"},
{ .cmd = KSU_IOCTL_SET_APP_PROFILE, .handler = do_set_app_profile, .perm_check = perm_check_manager}, { .cmd = KSU_IOCTL_SET_APP_PROFILE, .handler = do_set_app_profile, .perm_check = perm_check_manager, .name = "do_set_app_profile"},
{ .cmd = KSU_IOCTL_IS_SU_ENABLED, .handler = do_is_su_enabled, .perm_check = perm_check_manager}, { .cmd = KSU_IOCTL_IS_SU_ENABLED, .handler = do_is_su_enabled, .perm_check = perm_check_manager, .name = "do_is_su_enabled"},
{ .cmd = KSU_IOCTL_ENABLE_SU, .handler = do_enable_su, .perm_check = perm_check_manager}, { .cmd = KSU_IOCTL_ENABLE_SU, .handler = do_enable_su, .perm_check = perm_check_manager, .name = "do_enable_su"},
{ .cmd = KSU_IOCTL_GET_FULL_VERSION, .handler = do_get_full_version, .perm_check = perm_check_manager}, { .cmd = KSU_IOCTL_GET_FULL_VERSION, .handler = do_get_full_version, .perm_check = perm_check_manager, .name = "do_get_full_version"},
{ .cmd = KSU_IOCTL_HOOK_TYPE, .handler = do_get_hook_type, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_HOOK_TYPE, .handler = do_get_hook_type, .perm_check = perm_check_basic, .name = "do_get_hook_type"},
{ .cmd = KSU_IOCTL_ENABLE_KPM, .handler = do_enable_kpm, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_ENABLE_KPM, .handler = do_enable_kpm, .perm_check = perm_check_basic, .name = "do_enable_kpm"},
{ .cmd = KSU_IOCTL_DYNAMIC_MANAGER, .handler = do_dynamic_manager, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_DYNAMIC_MANAGER, .handler = do_dynamic_manager, .perm_check = perm_check_basic, .name = "do_dynamic_manager"},
{ .cmd = KSU_IOCTL_GET_MANAGERS, .handler = do_get_managers, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_GET_MANAGERS, .handler = do_get_managers, .perm_check = perm_check_basic, .name = "do_get_managers"},
{ .cmd = KSU_IOCTL_ENABLE_UID_SCANNER, .handler = do_enable_uid_scanner, .perm_check = perm_check_basic}, { .cmd = KSU_IOCTL_ENABLE_UID_SCANNER, .handler = do_enable_uid_scanner, .perm_check = perm_check_basic, .name = "do_enable_uid_scanner"},
{ .cmd = 0, .handler = NULL, .perm_check = NULL} // Sentinel { .cmd = 0, .handler = NULL, .perm_check = NULL, .name = NULL} // Sentinel
}; };
// IOCTL dispatcher // IOCTL dispatcher
@@ -541,27 +545,52 @@ static long anon_ksu_ioctl(struct file *filp, unsigned int cmd, unsigned long ar
{ {
void __user *argp = (void __user *)arg; void __user *argp = (void __user *)arg;
int i; int i;
const char *cmd_name = "unknown";
int ret = -ENOTTY;
#ifdef CONFIG_KSU_DEBUG #ifdef CONFIG_KSU_DEBUG
pr_info("ksu ioctl: cmd=0x%x from uid=%d\n", cmd, current_uid().val); pr_info("ksu ioctl: cmd=0x%x from uid=%d\n", cmd, current_uid().val);
#endif #endif
// Determine the command name based on the cmd value
for (i = 0; ksu_ioctl_handlers[i].handler; i++) { for (i = 0; ksu_ioctl_handlers[i].handler; i++) {
if (cmd == ksu_ioctl_handlers[i].cmd) { if (cmd == ksu_ioctl_handlers[i].cmd) {
// Check permission first cmd_name = ksu_ioctl_handlers[i].name;
if (ksu_ioctl_handlers[i].perm_check && break;
!ksu_ioctl_handlers[i].perm_check()) {
pr_warn("ksu ioctl: permission denied for cmd=0x%x uid=%d\n",
cmd, current_uid().val);
return -EPERM;
}
// Execute handler
return ksu_ioctl_handlers[i].handler(argp);
} }
} }
pr_warn("ksu ioctl: unsupported command 0x%x\n", cmd); // Check permission first
return -ENOTTY; if (ksu_ioctl_handlers[i].perm_check &&
!ksu_ioctl_handlers[i].perm_check()) {
pr_warn("ksu ioctl: permission denied for cmd=0x%x uid=%d\n",
cmd, current_uid().val);
#if __SULOG_GATE
ksu_sulog_report_syscall(current_uid().val, NULL, cmd_name, "DENIED");
#endif
return -EPERM;
}
// Execute handler
ret = ksu_ioctl_handlers[i].handler(argp);
// Log the result of the ioctl command
if (ret == 0) {
#if __SULOG_GATE
ksu_sulog_report_syscall(current_uid().val, NULL, cmd_name, "SUCCESS");
#endif
} else {
#if __SULOG_GATE
ksu_sulog_report_syscall(current_uid().val, NULL, cmd_name, "FAILED");
#endif
}
if (ksu_ioctl_handlers[i].handler == NULL) {
pr_warn("ksu ioctl: unsupported command 0x%x\n", cmd);
ret = -ENOTTY;
}
return ret;
} }
// File release handler // File release handler
@@ -603,6 +632,10 @@ int ksu_install_fd(void)
// Install fd // Install fd
fd_install(fd, filp); fd_install(fd, filp);
#if __SULOG_GATE
ksu_sulog_report_permission_check(current_uid().val, current->comm, fd >= 0);
#endif
pr_info("ksu fd installed: %d for pid %d\n", fd, current->pid); pr_info("ksu fd installed: %d for pid %d\n", fd, current->pid);
return fd; return fd;

1
kernel/supercalls.h
View File

@@ -134,6 +134,7 @@ struct ksu_ioctl_cmd_map {
unsigned int cmd; unsigned int cmd;
ksu_ioctl_handler_t handler; ksu_ioctl_handler_t handler;
ksu_perm_check_t perm_check; // Permission check function ksu_perm_check_t perm_check; // Permission check function
const char *name; // Command name for logging
}; };
// Install KSU fd to current process // Install KSU fd to current process