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remove devpts hook

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This commit is contained in:
5ec1cff
2024-11-01 18:19:31 +08:00
parent 203cd4d746
commit a034dbbe6e
1 changed files with 1 additions and 35 deletions
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36
kernel/sucompat.c
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@@ -164,30 +164,6 @@ int ksu_handle_execve_sucompat(int *fd, const char __user **filename_user,
return 0; return 0;
} }
int ksu_handle_devpts(struct inode *inode)
{
if (!current->mm) {
return 0;
}
uid_t uid = current_uid().val;
if (uid % 100000 < 10000) {
// not untrusted_app, ignore it
return 0;
}
if (!ksu_is_allow_uid(uid))
return 0;
if (ksu_devpts_sid) {
struct inode_security_struct *sec = selinux_inode(inode);
if (sec) {
sec->sid = ksu_devpts_sid;
}
}
return 0;
}
static int faccessat_handler_pre(struct kprobe *p, struct pt_regs *regs) static int faccessat_handler_pre(struct kprobe *p, struct pt_regs *regs)
{ {
@@ -221,15 +197,6 @@ static int execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
NULL); NULL);
} }
static int pts_unix98_lookup_pre(struct kprobe *p, struct pt_regs *regs)
{
struct inode *inode;
struct file *file = (struct file *)PT_REGS_PARM2(regs);
inode = file->f_path.dentry->d_inode;
return ksu_handle_devpts(inode);
}
static struct kprobe *init_kprobe(const char *name, static struct kprobe *init_kprobe(const char *name,
kprobe_pre_handler_t handler) kprobe_pre_handler_t handler)
{ {
@@ -260,7 +227,7 @@ static void destroy_kprobe(struct kprobe **kp_ptr)
*kp_ptr = NULL; *kp_ptr = NULL;
} }
static struct kprobe *su_kps[4]; static struct kprobe *su_kps[3];
// sucompat: permited process can execute 'su' to gain root access. // sucompat: permited process can execute 'su' to gain root access.
void ksu_sucompat_init() void ksu_sucompat_init()
@@ -268,7 +235,6 @@ void ksu_sucompat_init()
su_kps[0] = init_kprobe(SYS_EXECVE_SYMBOL, execve_handler_pre); su_kps[0] = init_kprobe(SYS_EXECVE_SYMBOL, execve_handler_pre);
su_kps[1] = init_kprobe(SYS_FACCESSAT_SYMBOL, faccessat_handler_pre); su_kps[1] = init_kprobe(SYS_FACCESSAT_SYMBOL, faccessat_handler_pre);
su_kps[2] = init_kprobe(SYS_NEWFSTATAT_SYMBOL, newfstatat_handler_pre); su_kps[2] = init_kprobe(SYS_NEWFSTATAT_SYMBOL, newfstatat_handler_pre);
su_kps[3] = init_kprobe("pts_unix98_lookup", pts_unix98_lookup_pre);
} }
void ksu_sucompat_exit() void ksu_sucompat_exit()