add susfs-dev branch files

kernel/kernel_compat.h

@@ -0,0 +1,67 @@
+#ifndef __KSU_H_KERNEL_COMPAT
+#define __KSU_H_KERNEL_COMPAT
+
+#include <linux/fs.h>
+#include <linux/version.h>
+#include <linux/cred.h>
+#include "ss/policydb.h"
+#include "linux/key.h"
+
+// for kernel without get_cred_rcu
+ #ifndef KSU_COMPAT_HAS_GET_CRED_RCU
+ static inline const struct cred *get_cred_rcu(const struct cred *cred)
+ {
+ 	struct cred *nonconst_cred = (struct cred *) cred;
+ 	if (!cred)
+ 		return NULL;
+ #ifdef KSU_COMPAT_ATOMIC_LONG
+ 	if (!atomic_long_inc_not_zero(&nonconst_cred->usage))
+ #else
+ 	if (!atomic_inc_not_zero(&nonconst_cred->usage))
+ #endif		
+ 		return NULL;
+ 	validate_creds(cred);
+ 	nonconst_cred->non_rcu = 0;
+ 	return cred;
+ }
+ #endif
+ 
+/*
+ * Adapt to Huawei HISI kernel without affecting other kernels ,
+ * Huawei Hisi Kernel EBITMAP Enable or Disable Flag ,
+ * From ss/ebitmap.h
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)) &&                           \
+		(LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)) ||               \
+	(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)) &&                      \
+		(LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0))
+#ifdef HISI_SELINUX_EBITMAP_RO
+#define CONFIG_IS_HW_HISI
+#endif
+#endif
+
+// Checks for UH, KDP and RKP
+#ifdef SAMSUNG_UH_DRIVER_EXIST
+#if defined(CONFIG_UH) || defined(CONFIG_KDP) || defined(CONFIG_RKP)
+#error "CONFIG_UH, CONFIG_KDP and CONFIG_RKP is enabled! Please disable or remove it before compile a kernel with KernelSU!"
+#endif
+#endif
+
+extern long ksu_strncpy_from_user_nofault(char *dst,
+					  const void __user *unsafe_addr,
+					  long count);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) || defined(CONFIG_IS_HW_HISI) || defined(CONFIG_KSU_ALLOWLIST_WORKAROUND)
+extern struct key *init_session_keyring;
+#endif
+
+extern void ksu_android_ns_fs_check();
+extern int ksu_access_ok(const void *addr, unsigned long size);
+extern struct file *ksu_filp_open_compat(const char *filename, int flags,
+					 umode_t mode);
+extern ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
+				      loff_t *pos);
+extern ssize_t ksu_kernel_write_compat(struct file *p, const void *buf,
+				       size_t count, loff_t *pos);
+
+#endif