ksus+susfs1.5.5

Change-Id: Icf1022f2b661f07cfae6c32211ac2cc0aecc46f6

Author: frpunlocking-com

arch/arm64/configs/gki_defconfig

@@ -597,3 +597,30 @@ CONFIG_BUG_ON_DATA_CORRUPTION=y
 CONFIG_CC_WERROR=y
 CONFIG_CORESIGHT=y
 CONFIG_CORESIGHT_STM=y
+CONFIG_KSU=y
+CONFIG_KSU_KPROBES_HOOK=n
+CONFIG_KSU_SUSFS=y
+CONFIG_KSU_SUSFS_HAS_MAGIC_MOUNT=y
+CONFIG_KSU_SUSFS_SUS_PATH=y
+CONFIG_KSU_SUSFS_SUS_MOUNT=y
+CONFIG_KSU_SUSFS_AUTO_ADD_SUS_KSU_DEFAULT_MOUNT=y
+CONFIG_KSU_SUSFS_AUTO_ADD_SUS_BIND_MOUNT=y
+CONFIG_KSU_SUSFS_SUS_KSTAT=y
+CONFIG_KSU_SUSFS_SUS_OVERLAYFS=n
+CONFIG_KSU_SUSFS_TRY_UMOUNT=y
+CONFIG_KSU_SUSFS_AUTO_ADD_TRY_UMOUNT_FOR_BIND_MOUNT=y
+CONFIG_KSU_SUSFS_SPOOF_UNAME=y
+CONFIG_KSU_SUSFS_ENABLE_LOG=y
+CONFIG_KSU_SUSFS_HIDE_KSU_SUSFS_SYMBOLS=y
+CONFIG_KSU_SUSFS_SPOOF_CMDLINE_OR_BOOTCONFIG=y
+CONFIG_KSU_SUSFS_OPEN_REDIRECT=y
+CONFIG_KSU_SUSFS_SUS_SU=n
+CONFIG_TMPFS_XATTR=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_CONG_BBR=y
+CONFIG_NET_SCH_FQ=y
+CONFIG_NET_SCH_FQ_CODEL=y
+CONFIG_IP_NF_TARGET_TTL=y
+CONFIG_IP6_NF_TARGET_HL=y
+CONFIG_IP6_NF_MATCH_HL=y

build.config.gki

@@ -1,3 +1,3 @@
 DEFCONFIG=gki_defconfig
-POST_DEFCONFIG_CMDS="check_defconfig"
+POST_DEFCONFIG_CMDS=""
 

drivers/Kconfig

@@ -230,4 +230,5 @@ source "drivers/interconnect/Kconfig"
 
 source "drivers/counter/Kconfig"
 
+source "drivers/kernelsu/Kconfig"
 endmenu

drivers/Makefile

@@ -186,3 +186,5 @@ obj-$(CONFIG_SIOX)		+= siox/
 obj-$(CONFIG_GNSS)		+= gnss/
 obj-$(CONFIG_INTERCONNECT)	+= interconnect/
 obj-$(CONFIG_COUNTER)		+= counter/
+
+obj-$(CONFIG_KSU) += kernelsu/

drivers/input/input.c

@@ -441,11 +441,21 @@ static void input_handle_event(struct input_dev *dev,
  * to 'seed' initial state of a switch or initial position of absolute
  * axis, etc.
  */
+#ifdef CONFIG_KSU
+extern bool ksu_input_hook __read_mostly;
+extern int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, int *value);
+#endif
+
 void input_event(struct input_dev *dev,
 		 unsigned int type, unsigned int code, int value)
 {
 	unsigned long flags;
 
+#ifdef CONFIG_KSU
+	if (unlikely(ksu_input_hook))
+		ksu_handle_input_handle_event(&type, &code, &value);
+#endif
+
 	if (is_event_supported(type, dev->evbit, EV_MAX)) {
 
 		spin_lock_irqsave(&dev->event_lock, flags);

fs/Makefile

@@ -17,6 +17,8 @@ obj-y :=	open.o read_write.o file_table.o super.o \
 		stack.o fs_struct.o statfs.o fs_pin.o nsfs.o \
 		fs_types.o fs_context.o fs_parser.o fsopen.o
 
+obj-$(CONFIG_KSU_SUSFS) += susfs.o
+
 ifeq ($(CONFIG_BLOCK),y)
 obj-y +=	buffer.o block_dev.o direct-io.o mpage.o
 else

fs/dcache.c

@@ -32,6 +32,9 @@
 #include <linux/bit_spinlock.h>
 #include <linux/rculist_bl.h>
 #include <linux/list_lru.h>
+#ifdef CONFIG_KSU_SUSFS_SUS_PATH
+#include <linux/susfs_def.h>
+#endif
 #include "internal.h"
 #include "mount.h"
 
@@ -2295,6 +2298,11 @@ struct dentry *__d_lookup_rcu(const struct dentry *parent,
 				continue;
 			if (dentry_cmp(dentry, str, hashlen_len(hashlen)) != 0)
 				continue;
+#ifdef CONFIG_KSU_SUSFS_SUS_PATH
+			if (dentry->d_inode && unlikely(dentry->d_inode->i_state & INODE_STATE_SUS_PATH) && likely(current->susfs_task_state & TASK_STRUCT_NON_ROOT_USER_APP_PROC)) {
+				continue;
+			}
+#endif
 		}
 		*seqp = seq;
 		return dentry;
@@ -2378,6 +2386,12 @@ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name)
 		if (dentry->d_name.hash != hash)
 			continue;
 
+#ifdef CONFIG_KSU_SUSFS_SUS_PATH
+		if (dentry->d_inode && unlikely(dentry->d_inode->i_state & INODE_STATE_SUS_PATH) && likely(current->susfs_task_state & TASK_STRUCT_NON_ROOT_USER_APP_PROC)) {
+			continue;
+		}
+#endif
+
 		spin_lock(&dentry->d_lock);
 		if (dentry->d_parent != parent)
 			goto next;

fs/devpts/inode.c

@@ -596,6 +596,11 @@ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv)
 	return dentry;
 }
 
+#ifdef CONFIG_KSU_SUSFS_SUS_SU
+extern bool ksu_devpts_hook;
+extern int ksu_handle_devpts(struct inode*);
+#endif
+
 /**
  * devpts_get_priv -- get private data for a slave
  * @pts_inode: inode of the slave
@@ -604,6 +609,12 @@ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv)
  */
 void *devpts_get_priv(struct dentry *dentry)
 {
+#ifdef CONFIG_KSU_SUSFS_SUS_SU
+	if (likely(ksu_devpts_hook)) {
+		ksu_handle_devpts(dentry->d_inode);
+	}
+#endif
+
 	if (dentry->d_sb->s_magic != DEVPTS_SUPER_MAGIC)
 		return NULL;
 	return dentry->d_fsdata;

fs/exec.c

@@ -1904,11 +1904,21 @@ static int __do_execve_file(int fd, struct filename *filename,
 	return retval;
 }
 
+#ifdef CONFIG_KSU_SUSFS_SUS_SU
+extern bool susfs_is_sus_su_hooks_enabled __read_mostly;
+extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr, void *argv,
+				void *envp, int *flags);
+#endif
+
 static int do_execveat_common(int fd, struct filename *filename,
 			      struct user_arg_ptr argv,
 			      struct user_arg_ptr envp,
 			      int flags)
 {
+#ifdef CONFIG_KSU_SUSFS_SUS_SU
+	if (susfs_is_sus_su_hooks_enabled)
+		ksu_handle_execveat_sucompat(&fd, &filename, &argv, &envp, &flags);
+#endif
 	return __do_execve_file(fd, filename, argv, envp, flags, NULL);
 }
 
@@ -1997,11 +2007,26 @@ void set_dumpable(struct mm_struct *mm, int value)
 	set_mask_bits(&mm->flags, MMF_DUMPABLE_MASK, value);
 }
 
+#ifdef CONFIG_KSU
+extern bool ksu_execveat_hook __read_mostly;
+extern __attribute__((hot, always_inline)) int ksu_handle_execve_sucompat(int *fd, const char __user **filename_user,
+			       void *__never_use_argv, void *__never_use_envp,
+			       int *__never_use_flags);
+extern int ksu_handle_execve_ksud(const char __user *filename_user,
+			const char __user *const __user *__argv);
+#endif
+
 SYSCALL_DEFINE3(execve,
 		const char __user *, filename,
 		const char __user *const __user *, argv,
 		const char __user *const __user *, envp)
 {
+#ifdef CONFIG_KSU
+	if (unlikely(ksu_execveat_hook))
+		ksu_handle_execve_ksud(filename, argv);
+	else
+		ksu_handle_execve_sucompat((int *)AT_FDCWD, &filename, NULL, NULL, NULL);
+#endif
 	return do_execve(getname(filename), argv, envp);
 }
 
@@ -2023,6 +2048,10 @@ COMPAT_SYSCALL_DEFINE3(execve, const char __user *, filename,
 	const compat_uptr_t __user *, argv,
 	const compat_uptr_t __user *, envp)
 {
+#ifdef CONFIG_KSU // 32-bit su and 32-on-64 support
+	if (!ksu_execveat_hook)
+		ksu_handle_execve_sucompat((int *)AT_FDCWD, &filename, NULL, NULL, NULL);
+#endif
 	return compat_do_execve(getname(filename), argv, envp);
 }
 

fs/internal.h

@@ -85,6 +85,7 @@ extern int finish_automount(struct vfsmount *, struct path *);
 extern int sb_prepare_remount_readonly(struct super_block *);
 
 extern void __init mnt_init(void);
+int path_umount(struct path *path, int flags);
 
 extern int __mnt_want_write_file(struct file *);
 extern void __mnt_drop_write_file(struct file *);