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kernel_samsung_a53x/include/linux/susfs.h
Nahuel Gómez 3d8ac9044d fs: import susfs 1.5.3 
* Revision: ec6d3ae385059409a58d67bc2a10d762e740efcb

Signed-off-by: Nahuel Gómez <nahuelgomez329@gmail.com>
2025-01-04 19:39:03 +01:00

231 lines
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#ifndef KSU_SUSFS_H
#define KSU_SUSFS_H
#include <linux/version.h>
#include <linux/types.h>
#include <linux/utsname.h>
#include <linux/hashtable.h>
#include <linux/path.h>
#define SUSFS_VERSION "v1.5.3"
#if LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)
#define SUSFS_VARIANT "NON-GKI"
#else
#define SUSFS_VARIANT "GKI"
#endif
/********/
/* ENUM */
/********/
/* shared with userspace ksu_susfs tool */
#define CMD_SUSFS_ADD_SUS_PATH 0x55550
#define CMD_SUSFS_ADD_SUS_MOUNT 0x55560
#define CMD_SUSFS_ADD_SUS_KSTAT 0x55570
#define CMD_SUSFS_UPDATE_SUS_KSTAT 0x55571
#define CMD_SUSFS_ADD_SUS_KSTAT_STATICALLY 0x55572
#define CMD_SUSFS_ADD_TRY_UMOUNT 0x55580
#define CMD_SUSFS_SET_UNAME 0x55590
#define CMD_SUSFS_ENABLE_LOG 0x555a0
#define CMD_SUSFS_SET_BOOTCONFIG 0x555b0
#define CMD_SUSFS_ADD_OPEN_REDIRECT 0x555c0
#define CMD_SUSFS_RUN_UMOUNT_FOR_CURRENT_MNT_NS 0x555d0
#define CMD_SUSFS_SHOW_VERSION 0x555e1
#define CMD_SUSFS_SHOW_ENABLED_FEATURES 0x555e2
#define CMD_SUSFS_SHOW_VARIANT 0x555e3
#define CMD_SUSFS_SHOW_SUS_SU_WORKING_MODE 0x555e4
#define CMD_SUSFS_IS_SUS_SU_READY 0x555f0
#define CMD_SUSFS_SUS_SU 0x60000
#define SUSFS_MAX_LEN_PATHNAME 256 // 256 should address many paths already unless you are doing some strange experimental stuff, then set your own desired length
#define SUSFS_FAKE_BOOT_CONFIG_SIZE 4096
#define TRY_UMOUNT_DEFAULT 0
#define TRY_UMOUNT_DETACH 1
#define SUS_SU_DISABLED 0
#define SUS_SU_WITH_OVERLAY 1 /* deprecated */
#define SUS_SU_WITH_HOOKS 2
/*
* inode->i_state => storing flag 'INODE_STATE_'
* mount->mnt.android_kabi_reserved4 => storing original mnt_id
* task_struct->android_kabi_reserved8 => storing last valid fake mnt_id
* user_struct->android_kabi_reserved2 => storing flag 'USER_STRUCT_KABI2_'
*/
#define INODE_STATE_SUS_PATH 16777216 // 1 << 24
#define INODE_STATE_SUS_MOUNT 33554432 // 1 << 25
#define INODE_STATE_SUS_KSTAT 67108864 // 1 << 26
#define INODE_STATE_OPEN_REDIRECT 134217728 // 1 << 27
#define USER_STRUCT_KABI2_NON_ROOT_USER_APP_PROFILE 16777216 // 1 << 24, for distinguishing root/no-root granted user app process
/*********/
/* MACRO */
/*********/
#define getname_safe(name) (name == NULL ? ERR_PTR(-EINVAL) : getname(name))
#define putname_safe(name) (IS_ERR(name) ? NULL : putname(name))
/**********/
/* STRUCT */
/**********/
/* sus_path */
#ifdef CONFIG_KSU_SUSFS_SUS_PATH
struct st_susfs_sus_path {
unsigned long target_ino;
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
};
struct st_susfs_sus_path_hlist {
unsigned long target_ino;
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
struct hlist_node node;
};
#endif
/* sus_mount */
#ifdef CONFIG_KSU_SUSFS_SUS_MOUNT
struct st_susfs_sus_mount {
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
unsigned long target_dev;
};
struct st_susfs_sus_mount_list {
struct list_head list;
struct st_susfs_sus_mount info;
};
#endif
/* sus_kstat */
#ifdef CONFIG_KSU_SUSFS_SUS_KSTAT
struct st_susfs_sus_kstat {
int is_statically;
unsigned long target_ino; // the ino after bind mounted or overlayed
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
unsigned long spoofed_ino;
unsigned long spoofed_dev;
unsigned int spoofed_nlink;
long long spoofed_size;
long spoofed_atime_tv_sec;
long spoofed_mtime_tv_sec;
long spoofed_ctime_tv_sec;
long spoofed_atime_tv_nsec;
long spoofed_mtime_tv_nsec;
long spoofed_ctime_tv_nsec;
unsigned long spoofed_blksize;
unsigned long long spoofed_blocks;
};
struct st_susfs_sus_kstat_hlist {
unsigned long target_ino;
struct st_susfs_sus_kstat info;
struct hlist_node node;
};
#endif
/* try_umount */
#ifdef CONFIG_KSU_SUSFS_TRY_UMOUNT
struct st_susfs_try_umount {
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
int mnt_mode;
};
struct st_susfs_try_umount_list {
struct list_head list;
struct st_susfs_try_umount info;
};
#endif
/* spoof_uname */
#ifdef CONFIG_KSU_SUSFS_SPOOF_UNAME
struct st_susfs_uname {
char release[__NEW_UTS_LEN+1];
char version[__NEW_UTS_LEN+1];
};
#endif
/* open_redirect */
#ifdef CONFIG_KSU_SUSFS_OPEN_REDIRECT
struct st_susfs_open_redirect {
unsigned long target_ino;
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
char redirected_pathname[SUSFS_MAX_LEN_PATHNAME];
};
struct st_susfs_open_redirect_hlist {
unsigned long target_ino;
char target_pathname[SUSFS_MAX_LEN_PATHNAME];
char redirected_pathname[SUSFS_MAX_LEN_PATHNAME];
struct hlist_node node;
};
#endif
/* sus_su */
#ifdef CONFIG_KSU_SUSFS_SUS_SU
struct st_sus_su {
int mode;
};
#endif
/***********************/
/* FORWARD DECLARATION */
/***********************/
/* sus_path */
#ifdef CONFIG_KSU_SUSFS_SUS_PATH
int susfs_add_sus_path(struct st_susfs_sus_path* __user user_info);
int susfs_sus_ino_for_filldir64(unsigned long ino);
#endif
/* sus_mount */
#ifdef CONFIG_KSU_SUSFS_SUS_MOUNT
int susfs_add_sus_mount(struct st_susfs_sus_mount* __user user_info);
#ifdef CONFIG_KSU_SUSFS_AUTO_ADD_SUS_BIND_MOUNT
int susfs_auto_add_sus_bind_mount(const char *pathname, struct path *path_target);
#endif // #ifdef CONFIG_KSU_SUSFS_AUTO_ADD_SUS_BIND_MOUNT
#ifdef CONFIG_KSU_SUSFS_AUTO_ADD_SUS_KSU_DEFAULT_MOUNT
void susfs_auto_add_sus_ksu_default_mount(const char __user *to_pathname);
#endif // #ifdef CONFIG_KSU_SUSFS_AUTO_ADD_SUS_KSU_DEFAULT_MOUNT
#endif // #ifdef CONFIG_KSU_SUSFS_SUS_MOUNT
/* sus_kstat */
#ifdef CONFIG_KSU_SUSFS_SUS_KSTAT
int susfs_add_sus_kstat(struct st_susfs_sus_kstat* __user user_info);
int susfs_update_sus_kstat(struct st_susfs_sus_kstat* __user user_info);
void susfs_sus_ino_for_generic_fillattr(unsigned long ino, struct kstat *stat);
void susfs_sus_ino_for_show_map_vma(unsigned long ino, dev_t *out_dev, unsigned long *out_ino);
#endif
/* try_umount */
#ifdef CONFIG_KSU_SUSFS_TRY_UMOUNT
int susfs_add_try_umount(struct st_susfs_try_umount* __user user_info);
void susfs_try_umount(uid_t target_uid);
#ifdef CONFIG_KSU_SUSFS_AUTO_ADD_TRY_UMOUNT_FOR_BIND_MOUNT
void susfs_auto_add_try_umount_for_bind_mount(struct path *path);
#endif // #ifdef CONFIG_KSU_SUSFS_AUTO_ADD_TRY_UMOUNT_FOR_BIND_MOUNT
#endif // #ifdef CONFIG_KSU_SUSFS_TRY_UMOUNT
/* spoof_uname */
#ifdef CONFIG_KSU_SUSFS_SPOOF_UNAME
int susfs_set_uname(struct st_susfs_uname* __user user_info);
int susfs_spoof_uname(struct new_utsname* tmp);
#endif
/* set_log */
#ifdef CONFIG_KSU_SUSFS_ENABLE_LOG
void susfs_set_log(bool enabled);
#endif
/* spoof_bootconfig */
#ifdef CONFIG_KSU_SUSFS_SPOOF_BOOTCONFIG
int susfs_set_bootconfig(char* __user user_fake_boot_config);
int susfs_spoof_bootconfig(struct seq_file *m);
#endif
/* open_redirect */
#ifdef CONFIG_KSU_SUSFS_OPEN_REDIRECT
int susfs_add_open_redirect(struct st_susfs_open_redirect* __user user_info);
struct filename* susfs_get_redirected_path(unsigned long ino);
#endif
/* sus_su */
#ifdef CONFIG_KSU_SUSFS_SUS_SU
int susfs_get_sus_su_working_mode(void);
int susfs_sus_su(struct st_sus_su* __user user_info);
#endif
/* susfs_init */
void susfs_init(void);
#endif
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