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kernel: allow GKI kprobes to use LSM hook for ksu_handle_devpts

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* Also minor changes on comments

Signed-off-by: rsuntk <rsuntk@yukiprjkt.my.id>
This commit is contained in:
rsuntk
2025-06-19 21:33:52 +07:00
committed by ShirkNeko
parent ae475cba67
commit ea7e2f4db6
3 changed files with 15 additions and 13 deletions
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9
kernel/sucompat.c
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@@ -263,6 +263,8 @@ static int execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
NULL);
}
#ifdef MODULE
static struct kprobe *su_kps[6];
static int pts_unix98_lookup_pre(struct kprobe *p, struct pt_regs *regs)
{
struct inode *inode;
@@ -275,6 +277,9 @@ static int pts_unix98_lookup_pre(struct kprobe *p, struct pt_regs *regs)
return ksu_handle_devpts(inode);
}
#else
static struct kprobe *su_kps[5];
#endif
static struct kprobe *init_kprobe(const char *name,
kprobe_pre_handler_t handler)
@@ -305,8 +310,6 @@ static void destroy_kprobe(struct kprobe **kp_ptr)
kfree(kp);
*kp_ptr = NULL;
}
static struct kprobe *su_kps[6];
#endif
// sucompat: permited process can execute 'su' to gain root access.
@@ -318,7 +321,9 @@ void ksu_sucompat_init()
su_kps[2] = init_kprobe(SYS_FACCESSAT_SYMBOL, faccessat_handler_pre);
su_kps[3] = init_kprobe(SYS_NEWFSTATAT_SYMBOL, newfstatat_handler_pre);
su_kps[4] = init_kprobe(SYS_FSTATAT64_SYMBOL, newfstatat_handler_pre);
#ifdef MODULE
su_kps[5] = init_kprobe("pts_unix98_lookup", pts_unix98_lookup_pre);
#endif
#else
ksu_sucompat_hook_state = true;
pr_info("ksu_sucompat init\n");