4f2b8b7077
These changes make KernelSU work on kernel4.4 [link](https://github.com/F-19-F/android_kernel_oneplus_msm8998). LINUX_VERSION_CODE macro changes have been vertied on 4.4 4.9 4.14. For kernel 4.4,just pick two commits * [introduce KernelSU](2993524f2f) * [allow init exec ksud under nosuid](3df9df42a6)
88 lines
1.6 KiB
C
88 lines
1.6 KiB
C
#include "selinux.h"
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#include "objsec.h"
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#include "linux/version.h"
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#include "../klog.h" // IWYU pragma: keep
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#define KERNEL_SU_DOMAIN "u:r:su:s0"
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static u32 ksu_sid;
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static int transive_to_domain(const char *domain)
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{
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struct cred *cred;
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struct task_security_struct *tsec;
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u32 sid;
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int error;
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cred = (struct cred *)__task_cred(current);
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tsec = cred->security;
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if (!tsec) {
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pr_err("tsec == NULL!\n");
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return -1;
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}
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error = security_secctx_to_secid(domain, strlen(domain), &sid);
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pr_info("error: %d, sid: %d\n", error, sid);
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if (!error) {
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if (!ksu_sid)
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ksu_sid = sid;
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tsec->sid = sid;
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tsec->create_sid = 0;
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tsec->keycreate_sid = 0;
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tsec->sockcreate_sid = 0;
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}
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return error;
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}
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void setup_selinux()
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{
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if (transive_to_domain(KERNEL_SU_DOMAIN)) {
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pr_err("transive domain failed.");
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return;
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}
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/* we didn't need this now, we have change selinux rules when boot!
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if (!is_domain_permissive) {
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if (set_domain_permissive() == 0) {
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is_domain_permissive = true;
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}
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}*/
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}
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void setenforce(bool enforce)
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{
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#if LINUX_VERSION_CODE > KERNEL_VERSION(4, 14, 0)
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#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
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selinux_state.enforcing = enforce;
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#endif
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#else
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selinux_enabled = enforce;
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#endif
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}
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bool getenforce()
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{
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#if LINUX_VERSION_CODE > KERNEL_VERSION(4, 14, 0)
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#ifdef CONFIG_SECURITY_SELINUX_DISABLE
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if (selinux_state.disabled) {
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return false;
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}
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#endif
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#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
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return selinux_state.enforcing;
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#else
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return false;
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#endif
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#else
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return selinux_enabled;
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#endif
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}
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bool is_ksu_domain()
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{
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return ksu_sid && current_sid() == ksu_sid;
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} |