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rename to proxy_file

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Ylarod
2025-11-08 10:52:14 +08:00
committed by ShirkNeko
parent af4d023777
commit a20c40f580
7 changed files with 399 additions and 406 deletions
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380
kernel/file_wrapper.c
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@@ -1,380 +0,0 @@
#include "linux/export.h"
#include <linux/anon_inodes.h>
#include <linux/capability.h>
#include <linux/cred.h>
#include <linux/err.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/version.h>
#include "allowlist.h"
#include "klog.h" // IWYU pragma: keep
#include "ksu.h"
#include "ksud.h"
#include "manager.h"
#include "selinux/selinux.h"
#include "core_hook.h"
#include "objsec.h"
#include "file_wrapper.h"
static loff_t mksu_wrapper_llseek(struct file *fp, loff_t off, int flags) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->llseek(data->orig, off, flags);
}
static ssize_t mksu_wrapper_read(struct file *fp, char __user *ptr, size_t sz, loff_t *off) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->read(orig, ptr, sz, off);
}
static ssize_t mksu_wrapper_write(struct file *fp, const char __user *ptr, size_t sz, loff_t *off) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->write(orig, ptr, sz, off);
}
static ssize_t mksu_wrapper_read_iter(struct kiocb *iocb, struct iov_iter *iovi) {
struct ksu_file_wrapper* data = iocb->ki_filp->private_data;
struct file* orig = data->orig;
iocb->ki_filp = orig;
return orig->f_op->read_iter(iocb, iovi);
}
static ssize_t mksu_wrapper_write_iter (struct kiocb *iocb, struct iov_iter *iovi) {
struct ksu_file_wrapper* data = iocb->ki_filp->private_data;
struct file* orig = data->orig;
iocb->ki_filp = orig;
return orig->f_op->write_iter(iocb, iovi);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
static int mksu_wrapper_iopoll(struct kiocb *kiocb, struct io_comp_batch* icb, unsigned int v) {
struct ksu_file_wrapper* data = kiocb->ki_filp->private_data;
struct file* orig = data->orig;
kiocb->ki_filp = orig;
return orig->f_op->iopoll(kiocb, icb, v);
}
#else
static int mksu_wrapper_iopoll(struct kiocb *kiocb, bool spin) {
struct ksu_file_wrapper* data = kiocb->ki_filp->private_data;
struct file* orig = data->orig;
kiocb->ki_filp = orig;
return orig->f_op->iopoll(kiocb, spin);
}
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 6, 0)
static int mksu_wrapper_iterate (struct file *fp, struct dir_context *dc) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->iterate(orig, dc);
}
#endif
static int mksu_wrapper_iterate_shared (struct file *fp, struct dir_context *dc) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->iterate_shared(orig, dc);
}
static __poll_t mksu_wrapper_poll (struct file *fp, struct poll_table_struct *pts) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->poll(orig, pts);
}
static long mksu_wrapper_unlocked_ioctl (struct file *fp, unsigned int cmd, unsigned long arg) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->unlocked_ioctl(orig, cmd, arg);
}
static long mksu_wrapper_compat_ioctl (struct file *fp, unsigned int cmd, unsigned long arg) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->compat_ioctl(orig, cmd, arg);
}
static int mksu_wrapper_mmap (struct file *fp, struct vm_area_struct * vma) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->mmap(orig, vma);
}
// static unsigned long mmap_supported_flags {}
static int mksu_wrapper_open(struct inode *ino, struct file *fp) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
struct inode *orig_ino = file_inode(orig);
return orig->f_op->open(orig_ino, orig);
}
static int mksu_wrapper_flush (struct file *fp, fl_owner_t id) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->flush(orig, id);
}
static int mksu_wrapper_fsync(struct file *fp, loff_t off1, loff_t off2, int datasync) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->fsync(orig, off1, off2, datasync);
}
static int mksu_wrapper_fasync(int arg, struct file *fp, int arg2) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->fasync(arg, orig, arg2);
}
static int mksu_wrapper_lock(struct file *fp, int arg1, struct file_lock *fl) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
return orig->f_op->lock(orig, arg1, fl);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 6, 0)
static ssize_t mksu_wrapper_sendpage (struct file *fp, struct page *pg, int arg1, size_t sz, loff_t *off, int arg2) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->sendpage) {
return orig->f_op->sendpage(orig, pg, arg1, sz, off, arg2);
}
return -EINVAL;
}
#endif
static unsigned long mksu_wrapper_get_unmapped_area(struct file *fp, unsigned long arg1, unsigned long arg2, unsigned long arg3, unsigned long arg4) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->get_unmapped_area) {
return orig->f_op->get_unmapped_area(orig, arg1, arg2, arg3, arg4);
}
return -EINVAL;
}
// static int mksu_wrapper_check_flags(int arg) {}
static int mksu_wrapper_flock(struct file *fp, int arg1, struct file_lock *fl) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->flock) {
return orig->f_op->flock(orig, arg1, fl);
}
return -EINVAL;
}
static ssize_t mksu_wrapper_splice_write(struct pipe_inode_info * pii, struct file *fp, loff_t *off, size_t sz, unsigned int arg1) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->splice_write) {
return orig->f_op->splice_write(pii, orig, off, sz, arg1);
}
return -EINVAL;
}
static ssize_t mksu_wrapper_splice_read(struct file *fp, loff_t *off, struct pipe_inode_info *pii, size_t sz, unsigned int arg1) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->splice_read) {
return orig->f_op->splice_read(orig, off, pii, sz, arg1);
}
return -EINVAL;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 6, 0)
void mksu_wrapper_splice_eof(struct file *fp) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->splice_eof) {
return orig->f_op->splice_eof(orig);
}
}
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
static int mksu_wrapper_setlease(struct file *fp, int arg1, struct file_lease **fl, void **p) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->setlease) {
return orig->f_op->setlease(orig, arg1, fl, p);
}
return -EINVAL;
}
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(6, 6, 0)
static int mksu_wrapper_setlease(struct file *fp, int arg1, struct file_lock **fl, void **p) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->setlease) {
return orig->f_op->setlease(orig, arg1, fl, p);
}
return -EINVAL;
}
#else
static int mksu_wrapper_setlease(struct file *fp, long arg1, struct file_lock **fl, void **p) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->setlease) {
return orig->f_op->setlease(orig, arg1, fl, p);
}
return -EINVAL;
}
#endif
static long mksu_wrapper_fallocate(struct file *fp, int mode, loff_t offset, loff_t len) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->fallocate) {
return orig->f_op->fallocate(orig, mode, offset, len);
}
return -EINVAL;
}
static void mksu_wrapper_show_fdinfo(struct seq_file *m, struct file *f) {
struct ksu_file_wrapper* data = m->file->private_data;
struct file* orig = data->orig;
if (orig->f_op->show_fdinfo) {
orig->f_op->show_fdinfo(m, orig);
}
}
static ssize_t mksu_wrapper_copy_file_range(struct file *f1, loff_t off1, struct file *f2,
loff_t off2, size_t sz, unsigned int flags) {
// TODO: determine which file to use
struct ksu_file_wrapper* data = f1->private_data;
struct file* orig = data->orig;
if (orig->f_op->copy_file_range) {
return orig->f_op->copy_file_range(orig, off1, f2, off2, sz, flags);
}
return -EINVAL;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
static loff_t mksu_wrapper_remap_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
loff_t len, unsigned int remap_flags) {
// TODO: determine which file to use
struct ksu_file_wrapper* data = file_in->private_data;
struct file* orig = data->orig;
if (orig->f_op->remap_file_range) {
return orig->f_op->remap_file_range(orig, pos_in, file_out, pos_out, len, remap_flags);
}
return -EINVAL;
}
static int mksu_wrapper_fadvise(struct file *fp, loff_t off1, loff_t off2, int flags) {
struct ksu_file_wrapper* data = fp->private_data;
struct file* orig = data->orig;
if (orig->f_op->fadvise) {
return orig->f_op->fadvise(orig, off1, off2, flags);
}
return -EINVAL;
}
#else
static int mksu_wrapper_clone_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out, u64 len) {
// TODO: determine which file to use
struct ksu_file_wrapper* data = file_in->private_data;
struct file* orig = data->orig;
if (orig->f_op->clone_file_range) {
return orig->f_op->clone_file_range(orig, pos_in, file_out, pos_out, len);
}
return -EINVAL;
}
static ssize_t mksu_wrapper_dedupe_file_range(struct file *src_file, u64 loff,
u64 len, struct file *dst_file, u64 dst_loff) {
// TODO: determine which file to use
struct ksu_file_wrapper* data = src_file->private_data;
struct file* orig = data->orig;
if (orig->f_op->dedupe_file_range) {
return orig->f_op->dedupe_file_range(orig, loff, len, dst_file, dst_loff);
}
return -EINVAL;
}
#endif
static int mksu_wrapper_release(struct inode *inode, struct file *filp) {
mksu_delete_file_wrapper(filp->private_data);
return 0;
}
struct ksu_file_wrapper* mksu_create_file_wrapper(struct file* fp) {
struct ksu_file_wrapper* p = kcalloc(sizeof(struct ksu_file_wrapper), 1, GFP_KERNEL);
if (!p) {
return NULL;
}
get_file(fp);
p->orig = fp;
p->ops.owner = THIS_MODULE;
p->ops.llseek = fp->f_op->llseek ? mksu_wrapper_llseek : NULL;
p->ops.read = fp->f_op->read ? mksu_wrapper_read : NULL;
p->ops.write = fp->f_op->write ? mksu_wrapper_write : NULL;
p->ops.read_iter = fp->f_op->read_iter ? mksu_wrapper_read_iter : NULL;
p->ops.write_iter = fp->f_op->write_iter ? mksu_wrapper_write_iter : NULL;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
p->ops.iopoll = fp->f_op->iopoll ? mksu_wrapper_iopoll : NULL;
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 6, 0)
p->ops.iterate = fp->f_op->iterate ? mksu_wrapper_iterate : NULL;
#endif
p->ops.iterate_shared = fp->f_op->iterate_shared ? mksu_wrapper_iterate_shared : NULL;
p->ops.poll = fp->f_op->poll ? mksu_wrapper_poll : NULL;
p->ops.unlocked_ioctl = fp->f_op->unlocked_ioctl ? mksu_wrapper_unlocked_ioctl : NULL;
p->ops.compat_ioctl = fp->f_op->compat_ioctl ? mksu_wrapper_compat_ioctl : NULL;
p->ops.mmap = fp->f_op->mmap ? mksu_wrapper_mmap : NULL;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
p->ops.fop_flags = fp->f_op->fop_flags;
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)
p->ops.mmap_supported_flags = fp->f_op->mmap_supported_flags;
#endif
p->ops.open = fp->f_op->open ? mksu_wrapper_open : NULL;
p->ops.flush = fp->f_op->flush ? mksu_wrapper_flush : NULL;
p->ops.release = mksu_wrapper_release;
p->ops.fsync = fp->f_op->fsync ? mksu_wrapper_fsync : NULL;
p->ops.fasync = fp->f_op->fasync ? mksu_wrapper_fasync : NULL;
p->ops.lock = fp->f_op->lock ? mksu_wrapper_lock : NULL;
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 6, 0)
p->ops.sendpage = fp->f_op->sendpage ? mksu_wrapper_sendpage : NULL;
#endif
p->ops.get_unmapped_area = fp->f_op->get_unmapped_area ? mksu_wrapper_get_unmapped_area : NULL;
p->ops.check_flags = fp->f_op->check_flags;
p->ops.flock = fp->f_op->flock ? mksu_wrapper_flock : NULL;
p->ops.splice_write = fp->f_op->splice_write ? mksu_wrapper_splice_write : NULL;
p->ops.splice_read = fp->f_op->splice_read ? mksu_wrapper_splice_read : NULL;
p->ops.setlease = fp->f_op->setlease ? mksu_wrapper_setlease : NULL;
p->ops.fallocate = fp->f_op->fallocate ? mksu_wrapper_fallocate : NULL;
p->ops.show_fdinfo = fp->f_op->show_fdinfo ? mksu_wrapper_show_fdinfo : NULL;
p->ops.copy_file_range = fp->f_op->copy_file_range ? mksu_wrapper_copy_file_range : NULL;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
p->ops.remap_file_range = fp->f_op->remap_file_range ? mksu_wrapper_remap_file_range : NULL;
p->ops.fadvise = fp->f_op->fadvise ? mksu_wrapper_fadvise : NULL;
#else
p->ops.clone_file_range = fp->f_op->clone_file_range ? mksu_wrapper_clone_file_range : NULL;
p->ops.dedupe_file_range = fp->f_op->dedupe_file_range ? mksu_wrapper_dedupe_file_range : NULL;
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 6, 0)
p->ops.splice_eof = fp->f_op->splice_eof ? mksu_wrapper_splice_eof : NULL;
#endif
return p;
}
void mksu_delete_file_wrapper(struct ksu_file_wrapper* data) {
fput((struct file*) data->orig);
kfree(data);
}