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kernel: Add header guard and support Official KernelSU fd wrapper

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* Based on unmerged pull-request
https://github.com/tiann/KernelSU/pull/ 2285

Co-authored-by: Ylarod <me@ylarod.cn>
Signed-off-by: Faris <rissu.ntk@gmail.com>
This commit is contained in:
Faris
2025-11-08 14:11:25 +07:00
committed by ShirkNeko
parent 2f2d6aeecf
commit 76ca0050a7
3 changed files with 21 additions and 4 deletions
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5
kernel/file_wrapper.h
View File

@@ -1,3 +1,6 @@
#ifndef __KSU_H_FILE_WRAPPER
#define __KSU_H_FILE_WRAPPER
#include <linux/file.h>
#include <linux/fs.h>
@@ -8,3 +11,5 @@ struct ksu_file_wrapper {
struct ksu_file_wrapper *mksu_create_file_wrapper(struct file *fp);
void mksu_delete_file_wrapper(struct ksu_file_wrapper *data);
#endif

19
kernel/supercalls.c
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@@ -354,7 +354,7 @@ static int do_set_feature(void __user *arg)
return 0;
}
static int do_get_wrapper_fd(void __user *arg)
static int __do_get_wrapper_fd(const char *anon_name)
{
if (!ksu_file_sid) {
return -1;
@@ -379,11 +379,11 @@ static int do_get_wrapper_fd(void __user *arg)
goto put_orig_file;
}
struct file *pf = anon_inode_getfile("[mksu_fdwrapper]", &data->ops,
struct file *pf = anon_inode_getfile(anon_name, &data->ops,
data, f->f_flags);
if (IS_ERR(pf)) {
ret = PTR_ERR(pf);
pr_err("mksu_fdwrapper: anon_inode_getfile failed: %ld\n",
pr_err("fdwrapper: anon_inode_getfile failed: %ld\n",
PTR_ERR(pf));
goto put_wrapper_data;
}
@@ -402,7 +402,7 @@ static int do_get_wrapper_fd(void __user *arg)
ret = get_unused_fd_flags(cmd.flags);
if (ret < 0) {
pr_err("mksu_fdwrapper: get unused fd failed: %d\n", ret);
pr_err("fdwrapper: get unused fd failed: %d\n", ret);
goto put_wrapper_file;
}
@@ -579,6 +579,16 @@ static int do_enable_uid_scanner(void __user *arg)
return 0;
}
static int do_get_wrapper_fd(void __user *arg)
{
return __do_get_wrapper_fd("[mksu_fdwrapper]");
}
static int do_proxy_file(void __user *arg)
{
return __do_get_wrapper_fd("[ksu_file_proxy]");
}
// IOCTL handlers mapping table
static const struct ksu_ioctl_cmd_map ksu_ioctl_handlers[] = {
{ .cmd = KSU_IOCTL_GRANT_ROOT, .name = "GRANT_ROOT", .handler = do_grant_root, .perm_check = allowed_for_su },
@@ -596,6 +606,7 @@ static const struct ksu_ioctl_cmd_map ksu_ioctl_handlers[] = {
{ .cmd = KSU_IOCTL_GET_FEATURE, .name = "GET_FEATURE", .handler = do_get_feature, .perm_check = manager_or_root },
{ .cmd = KSU_IOCTL_SET_FEATURE, .name = "SET_FEATURE", .handler = do_set_feature, .perm_check = manager_or_root },
{ .cmd = KSU_IOCTL_GET_WRAPPER_FD, .name = "GET_WRAPPER_FD", .handler = do_get_wrapper_fd, .perm_check = manager_or_root },
{ .cmd = KSU_IOCTL_PROXY_FILE, .name = "PROXY_FILE", .handler = do_proxy_file, .perm_check = manager_or_root },
{ .cmd = KSU_IOCTL_GET_FULL_VERSION,.name = "GET_FULL_VERSION", .handler = do_get_full_version, .perm_check = always_allow},
{ .cmd = KSU_IOCTL_HOOK_TYPE,.name = "GET_HOOK_TYPE", .handler = do_get_hook_type, .perm_check = manager_or_root},
{ .cmd = KSU_IOCTL_ENABLE_KPM, .name = "GET_ENABLE_KPM", .handler = do_enable_kpm, .perm_check = manager_or_root},

1
kernel/supercalls.h
View File

@@ -124,6 +124,7 @@ struct ksu_get_wrapper_fd_cmd {
#define KSU_IOCTL_SET_APP_PROFILE _IOC(_IOC_WRITE, 'K', 12, 0)
#define KSU_IOCTL_GET_FEATURE _IOC(_IOC_READ|_IOC_WRITE, 'K', 13, 0)
#define KSU_IOCTL_SET_FEATURE _IOC(_IOC_WRITE, 'K', 14, 0)
#define KSU_IOCTL_PROXY_FILE _IOC(_IOC_NONE, 'K', 15, 0)
#define KSU_IOCTL_GET_WRAPPER_FD _IOC(_IOC_NONE, 'K', 10000, 0)
// Other IOCTL command definitions
#define KSU_IOCTL_GET_FULL_VERSION _IOC(_IOC_READ, 'K', 100, 0)