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kernel: remove devpts hook

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This commit is contained in:
ShirkNeko
2025-11-08 11:28:23 +08:00
parent a533a490bd
commit bf5cb885b5
1 changed files with 0 additions and 62 deletions
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62
kernel/sucompat.c
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@@ -318,12 +318,6 @@ int ksu_handle_execve_sucompat(int *fd, const char __user **filename_user,
return 0; return 0;
} }
// dummified
int ksu_handle_devpts(struct inode *inode)
{
return 0;
}
int __ksu_handle_devpts(struct inode *inode) int __ksu_handle_devpts(struct inode *inode)
{ {
@@ -390,54 +384,6 @@ static void sucompat_sys_enter_handler(void *data, struct pt_regs *regs,
#endif // KSU_HAVE_SYSCALL_TRACEPOINTS_HOOK #endif // KSU_HAVE_SYSCALL_TRACEPOINTS_HOOK
#ifdef KSU_KPROBES_HOOK
static int pts_unix98_lookup_pre(struct kprobe *p, struct pt_regs *regs)
{
struct inode *inode;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
struct file *file = (struct file *)PT_REGS_PARM2(regs);
inode = file->f_path.dentry->d_inode;
#else
inode = (struct inode *)PT_REGS_PARM2(regs);
#endif
return ksu_handle_devpts(inode);
}
static struct kprobe *init_kprobe(const char *name,
kprobe_pre_handler_t handler)
{
struct kprobe *kp = kzalloc(sizeof(struct kprobe), GFP_KERNEL);
if (!kp)
return NULL;
kp->symbol_name = name;
kp->pre_handler = handler;
int ret = register_kprobe(kp);
pr_info("sucompat: register_%s kprobe: %d\n", name, ret);
if (ret) {
kfree(kp);
return NULL;
}
return kp;
}
static void destroy_kprobe(struct kprobe **kp_ptr)
{
struct kprobe *kp = *kp_ptr;
if (!kp)
return;
unregister_kprobe(kp);
synchronize_rcu();
kfree(kp);
*kp_ptr = NULL;
}
static struct kprobe *pts_kp = NULL;
#endif
#ifdef CONFIG_KRETPROBES #ifdef CONFIG_KRETPROBES
static struct kretprobe *init_kretprobe(const char *name, static struct kretprobe *init_kretprobe(const char *name,
@@ -522,11 +468,6 @@ void ksu_sucompat_enable()
int ret; int ret;
pr_info("sucompat: ksu_sucompat_enable called\n"); pr_info("sucompat: ksu_sucompat_enable called\n");
#ifdef KSU_KPROBES_HOOK
// Register kprobe for pts_unix98_lookup
pts_kp = init_kprobe("pts_unix98_lookup", pts_unix98_lookup_pre);
#endif
#ifdef CONFIG_KRETPROBES #ifdef CONFIG_KRETPROBES
// Register kretprobe for syscall_regfunc // Register kretprobe for syscall_regfunc
syscall_regfunc_rp = init_kretprobe("syscall_regfunc", syscall_regfunc_handler); syscall_regfunc_rp = init_kretprobe("syscall_regfunc", syscall_regfunc_handler);
@@ -568,9 +509,6 @@ void ksu_sucompat_disable()
destroy_kretprobe(&syscall_unregfunc_rp); destroy_kretprobe(&syscall_unregfunc_rp);
#endif #endif
#ifdef KSU_KPROBES_HOOK
destroy_kprobe(&pts_kp);
#endif
} }
// sucompat: permited process can execute 'su' to gain root access. // sucompat: permited process can execute 'su' to gain root access.